JP7006281B2 - Steel structure - Google Patents

Description

The present invention relates to a steel-framed building provided with steel columns extending in the height direction of the building.

Conventionally, in a beam-column joint structure, a bolt-joint structure of a column-beam made of cross H-shaped steel or the like disclosed in Patent Document 1 has been proposed for the purpose of ensuring structural strength.

The bolt-joint structure of a column beam made of cross H-shaped steel or the like disclosed in Patent Document 1 is a vertical stiffener having a predetermined height along the inside of each T-shaped portion of a steel column having a T-shaped portion such as a cross H-shaped steel column. However, it has horizontal ribs integrally at its intermediate height, and bolt fastening holes are arranged in the vertical direction of the vertical stiffener to form a connecting reinforcing metal fitting, and the connecting reinforcing metal fitting is used as the T of the cross H-shaped steel column. Insert the bolt into the bolt insertion hole of the T-shaped steel that is in contact with the outside of the T-shaped portion along the inside of the character portion, the bolt insertion hole provided in the T-shaped portion, and the fastening bolt hole of the vertical stiffener. It is to be concluded.

Japanese Unexamined Patent Publication No. 6-4204

In order to secure sufficient structural strength in a building, H-shaped steel as a beam is generally joined to a square steel pipe as a column. However, there is a problem that the corner portion of the square steel pipe protrudes to the exclusive portion to form a pillar shape, and the exclusive portion becomes narrow.

In the bolt joint structure of columns and beams made of cross H-shaped steel or the like disclosed in Patent Document 1, when the connecting reinforcing metal fittings provided inside the T-shaped part connect adjacent T-shaped parts to each other, the connecting reinforcing metal fittings are indoors. There was a problem that the pillar shape was formed by protruding and the exclusive part became narrow. Further, in the bolt-joint structure of columns and beams made of cross H-shaped steel or the like disclosed in Patent Document 1, since the steel columns are formed symmetrically in a plan view, for example, a plurality of steel columns arranged at the four corners are formed as beams. When joining with, the lengths (member lengths) in the material axis direction of the beams arranged in parallel with each other must be the same. That is, it is not possible to shorten the length of only one of the beams arranged in parallel in the lumber direction and join them. In general, the longer the length of the beam in the material axis direction, the larger the cross-sectional dimensions such as the beam length and width of the beam. There was a problem that not only the part became narrower but also the material cost when constructing the building increased.

Therefore, the present invention has been devised in view of the above-mentioned problems, and the purpose thereof is to secure a wide interior space of the exclusive portion, and when constructing a building. The purpose is to provide a steel-framed building that can reduce the cost of materials.

The steel-framed building according to the first invention includes a plurality of steel columns extending in the height direction of the building, a plurality of first steel beams extending in the horizontal first direction, and a horizontal structure orthogonal to the first direction. The first steel beam has a plurality of second steel beams extending in the second direction, and the first steel beam is bridged between the steel columns adjacent to the first direction, and the first steel beam is adjacent to the second direction. The second steel beam is bridged between the steel columns, the four steel columns, a pair of the first steel beams adjacent to each other, and a pair of the second steel beams adjacent to each other. In a steel-framed building in which one section is formed by the above, the steel beam is a first web formed in the web width direction along the first direction or the second direction, and the first web. Towards a direction orthogonal to the web width direction of the first web, which is provided at both ends in the web width direction and to which the ends of the first steel beam or the second steel beam in the material axis direction are joined. A pair of formed first beams, a second web joined to one side of the web surface of the first web, and a second web formed in a web width direction orthogonal to the web surface of the first web. The second steel beam or the second steel beam provided at an end of the second web opposite to the first web in the web width direction and extending in a direction different from the steel beam joined to the first flange. It has a second flange formed in a direction orthogonal to the web width direction of the second web to which the end portion of the steel beam 1 in the material axis direction is joined, and forms the one section. The first section is formed with the intersection of the web thickness axis of the first web and the web thickness axis of the second web as the first intersection for each of the steel columns. The distance between the beam joining surface of the first flange or the second flange to which the steel beam of 1 is joined and the first intersection is set as the first distance, and the second steel frame forming the one section is formed. When the distance between the beam joining surface of the second flange or the first flange to which the beam is joined and the first steel beam is not joined and the first intersection is defined as the second distance, the one is mentioned. At least one of the steel columns forming the section is different in size from the other steel columns adjacent to each other in the second direction, and is adjacent to each other in the first direction. It is characterized in that the size of the second distance is different from that of the other matching steel columns, and one or both of them are satisfied.

In the first invention, the steel-framed building according to the second invention is such that the steel beam is joined to the surface of the web surface of the first web opposite to the surface to which the second web is joined. A third web formed in a web width direction orthogonal to the web surface of the first web and an end portion of the third web opposite to the first web in the web width direction are provided. It has a third flange formed in a direction orthogonal to the web surface of the third web, and the first steel beam or the first steel beam joined to the second flange to the third flange. It is characterized in that the first steel frame beam or the second steel frame beam forming a section different from the section formed by the second steel frame beam is joined.
The steel-framed building according to the third invention is characterized in that, in the second invention, the second web and the third web are joined to each other with the first web interposed therebetween.

In any one of the first to third inventions , the steel-framed building according to the fourth invention has the steel-framed columns provided on both side surfaces of the first steel-framed beam in the direction along the material axis direction. In the space between the wall members, the first flange or the second flange to which the first steel beam is joined is arranged, and on both side surfaces of the second steel beam in the direction along the material axis direction. The second flange or the first flange to which the second steel beam is joined is arranged in the space between the second wall materials provided respectively.

According to the first to fourth inventions, the web width of the first web formed along the first direction or the second direction and the web width of the first web provided at both ends in the web width direction of the first web. A pair of first flanges formed in a direction orthogonal to the direction and a first flange joined to one side of the web surface of the first web and formed along a direction orthogonal to the web surface of the first web. It has two webs and a second flange provided at an end opposite to the first web in the web width direction of the second web and formed in a direction orthogonal to the web width direction of the second web. Steel columns are used. As a result, since the conventional square steel pipe is not used as a column, the column shape is not formed even when the steel beam is joined to the steel column. For this reason, it is possible to secure a wider interior space such as an exclusive part of a building compared to the case where there is a pillar shape, and improve the functionality and aesthetics of the interior space, such as a hotel, hospital, or condominium. It is possible to increase the added value such as.

Further, according to the first to fourth inventions, at least one of the steel columns forming one section has a size of the first distance from each other with the other adjacent steel columns in the second direction. It satisfies at least one of different or different sizes of the second distance from other steel columns adjacent to each other in the first direction. As a result, the lengths of the pair of first steel beam beams forming one section and / or the lengths of the second steel frame beams can be different from each other. The length in the axial direction can be set relatively freely, and the degree of freedom in designing the entire building is improved.

Further, according to the fourth invention, since the wall material can be provided along the first steel frame beam and the second steel frame beam without forming a pillar shape in the section, it protrudes into the exclusive portion as in the conventional case. It is possible to omit the work of processing the wall material according to the formed pillar shape, facilitate the construction of the wall material, and significantly reduce the time required for the construction of the wall material.

It is a perspective view which shows typically one Embodiment of the steel-framed building to which this invention is applied. It is a top view which shows each floor of the steel-framed building of FIG. 1 schematically. It is a partially enlarged plan view of FIG. (A) is a side view showing a steel beam between beams in a steel-framed building to which the present invention is applied, and (b) is a front view seen from the girder direction. (A) is a side view showing a girder steel beam in a steel-framed building to which the present invention is applied, and (b) is a front view seen from the beam-to-beam direction. It is a partially broken enlarged sectional view schematically showing an inter-beam steel beam and a girder steel beam supporting a floor slab in a steel-framed building to which the present invention is applied. It is an enlarged view of the main part of FIG. However, a part of the inter-beam steel beam, the first to fourth steel columns, and the girder steel beam that form the section to be formed is mainly shown, and the inter-beam steel beam and the girder steel beam that form the other section are omitted. .. FIG. 3 is an enlarged view of a main part different from FIG. 7. However, a part of the girder steel beam, the first to fourth steel columns, and the inter-beam steel beam that form the section to be formed is mainly shown, and the inter-beam steel beam and the girder steel beam that form the other section are omitted. .. It is a top view which shows the different embodiment in the steel frame column used for the steel-framed building to which this invention is applied, and (a) is the size of the 2nd web and the 3rd web in the web width direction having the same size with each other. In addition, a steel frame column in which the second web and the third web are joined to a substantially central portion in the web width direction of the first web is shown, and in (b), one of the second web and the third web is shown. A steel column joined to the first web at a position deviated toward the first flange side is shown. It is a plan view which shows the embodiment which is further different from FIG. 9 in the steel frame column used for the steel-framed building to which this invention is applied, and (a) is a 2nd web joined to the substantially central part of the 1st web. , Indicates a steel column joined to the first web at a position where the third web is biased toward the first flange side, and (b) is a position where the second web is biased toward the first flange side at one side. A steel column joined to the first web and joined to the first web at a position where the third web is offset toward the other first flange side is shown. However, in (a) and (b), the lengths of the second web and the third web in the web width direction are the same as each other. It is a plan view which shows the embodiment which is further different from FIG. 10 in the steel frame column used for the steel-framed building to which this invention is applied, and (a) is a 2nd web joined to the substantially central part of the 1st web. , Indicates a steel column joined to the first web at a position where the third web is biased toward the first flange side, and (b) is a position where the second web is biased toward the first flange side at one side. A steel column joined to the first web and joined to the first web at a position where the third web is offset toward the other first flange side is shown, and in (c), the second web is substantially in the center of the first web. A steel column joined to a portion and joined to the first web at a position where the third web is biased toward one of the first flanges is shown. However, in (a) to (c), the lengths of the second web and the third web in the web width direction are different from each other. It is a top view which shows typically the form different from FIG. 2 about each floor of a steel-framed building. It is an enlarged view of the main part schematically showing the M part of FIG. It is an enlarged view of the main part schematically showing the N part of FIG. It is a top view schematically showing the steel columns arranged in the corners in the steel-framed building to which this invention was applied. In a steel frame column used in a steel-framed building to which the present invention is applied, (a) an enlarged view of a main part showing a steel frame column provided with a stiffener, and (b) an enlarged view of a main part showing a steel frame column provided with a rib plate. Is. In the steel-framed building to which the present invention is applied, the arrangement of the inter-beam steel beam and the girder steel beam shows a form different from that in FIG. It is an enlarged sectional view, and (b) is a partially broken enlarged sectional view which shows the form which supported the floor slab by a girder steel beam.

Hereinafter, the steel-framed building to which the present invention is applied will be described in detail with reference to the drawings.

1 to 17 show an embodiment of the steel-framed building of the present invention, and the steel-framed building 1 of this embodiment is not only an accommodation facility such as a hotel, but also an apartment house such as an apartment or an apartment, or a school. It will be introduced in buildings such as school buildings, hospital facilities, and nursing homes for the elderly.

As shown in FIG. 1, the steel-framed building 1 is introduced into a one-story building consisting of a single floor F, or a low-rise building or a high-rise building consisting of a plurality of floors F. A plurality of steel frame columns 4 extending in the height direction Z are provided on each level F of the building.

Further, as shown in FIG. 2, the steel-framed building 1 is surrounded on all sides by the outer peripheral portion 81 of the building having a substantially rectangular shape in a plan view, and the inner side surrounded by the outer peripheral portion 81 of the building is the inside of the building. It is 80. At this time, the steel-framed building 1 has a horizontal first direction, the short side direction in the plan view is the beam-to-beam direction Y, and the first direction, that is, the horizontal second direction orthogonal to the beam-to-beam direction, is the plan view. The longitudinal direction of is the girder direction X. Then, a plurality of exclusive portions P such as guest rooms, hospital rooms, dwelling units, classrooms, etc. are arranged side by side in the column direction X in the hierarchy F.

Further, in the steel-framed building 1 in this embodiment, in the same floor, at a substantially central position in the beam-to-beam direction Y, a passage C extending in the girder direction X used for entering and exiting each exclusive portion P is used as a common portion S. Exclusive portions P are provided on both sides (for example, the south side and the north side) of the passage C in the inter-beam direction Y. In the steel-framed building to which the present invention is applied, a passage C may be provided as a common portion S on one side of the exclusive portion P in the inter-beam direction Y, or the passage C and the passage C and both sides of the exclusive portion P in the inter-beam direction Y may be provided. Each balcony may be provided as a common area S.

The exclusive portion P is a space exclusively occupied by the user or the resident of each guest room or the like. The exclusive portion P is provided with an entrance / exit such as an entrance opened for entering / exiting from the passage C at a portion adjacent to the passage C in the beam-to-beam direction Y. The exclusive portion P on one side of the beam-to-beam direction Y of the passage C is appropriately provided with a partition material or the like, and is arranged so that the length of the girder direction X is different from that of the exclusive portion P on the other side facing the passage C. May be done. It should be noted that the passage C provided as the common area S can come and go from time to time to the entrance / exit of each exclusive area P.

Here, in the steel-framed building 1, in addition to the steel column 4, the inter-beam steel beam 2 as the first steel beam extending in the inter-beam direction Y in the first direction and the second extending in the girder direction X in the second direction. It has a girder steel beam 3 as a steel beam of 2. Then, the inter-beam steel frame beam 2 is bridged between the steel frame columns 4 and 4 adjacent to each other in the beam-to-beam direction Y, and the girder steel frame beam 3 is bridged between the steel frame columns 4 and 4 adjacent to each other in the girder direction X. The inter-beam steel beam 2, the girder steel beam 3, and the steel column 4 are joined to each other. As a result, in the steel structure building 1, one section is formed by four steel columns, a pair of inter-beam steel beams 2 and 2 adjacent to each other, and a pair of girder steel beams 3 and 3 adjacent to each other. It has a structure like that.

In this embodiment, the compartment is formed in a substantially rectangular shape in a plan view, and more specifically, a plurality of small sizes formed on one side of the passage C in the beam-to-beam direction Y (upper side of the passage C in FIG. 2). A plurality of large compartments LB, which are larger than the small compartment SB, are formed on the other side of the beam-to-beam direction Y (lower side of the passage C in FIG. 2). Further, the steel-framed building 1 of this embodiment includes four small sections SB and a large section LB, all of the small sections SB are formed in a substantially square shape in a plan view, and all of the large sections LB are in the direction between beams. It is formed in a substantially rectangular shape in a long plan view in Y. Further, in the large section LB, a passage C as a common area S is arranged in a portion on the small section side, and the passage C is partitioned by a wall material or the like at a position opposite to the small section side in the passage C. Two exclusive portions P having a substantially rectangular shape in a plan view long in the beam-to-beam direction are provided so as to be arranged in the girder direction X. In the small compartment SB, one exclusive portion P is formed in each compartment.

FIG. 3 shows a part of the steel-framed building 1 of FIG. 2, in which four steel columns 4 and a pair of inter-beam steel beams 2 and a pair of girder steel frames spanned over these four steel columns 4 are shown. A small section SB ₁ (hereinafter, may be referred to as a “formation target section”) formed by a beam 3 as an example of a section to be formed, and another small section adjacent to the formation target section SB ₁ . A part of SB ₂ and SB ₃ and a part of a large section LB ₁ , LB ₂ and LB ₃ adjacent to the section to be formed SB ₁ are shown, respectively.
Hereinafter, the steel-framed building of the present invention will be described with the portion centered on the formation target section SB ₁ shown in FIG. 3 as a part of the steel-framed building 1 as a representative example.

To specifically explain the formation target section SB ₁ shown in FIG. 3, the formation target section SB ₁ is formed in a substantially square shape in a plan view as a whole, and is located on the inner side of the building as a steel column 4. The first steel column 4-1 and the third steel column 4-3, which are the middle columns, and the second steel column 4-2 and the fourth steel frame, which are the side columns located on the outer side of the building. It is formed by using four pillars 4-4.
Further, as the inter-beam steel beam forming the formation target section SB ₁ , the first steel column 4-1 and the first steel column 4-1 and the second steel column 4-2 adjacent to the beam-to-beam direction Y are used. The first inter-beam steel beam 2-1 and the third steel column 4-3, the third steel column 4-3, and the fourth steel column 4-4 adjacent to the beam-to-beam direction Y. A second inter-beam steel beam 2-2 spanned over is used.
Further, as the girder steel beam forming the formation target section SB ₁ , the first steel column 4-1 and the first steel column and the third steel column 4-3 adjacent to the girder direction X are bridged. It spans the first girder steel beam 3-1, the second steel column 4-2, the second steel column 4-2, and the fourth steel column 4-4 adjacent to the girder direction X. The second girder steel beam 3-2 that has been used is used.

As shown in FIG. 4A, the first inter-beam steel beam 2-1 and the second inter-beam steel beam 2-2 have a substantially H-shaped cross section having an upper flange 21, a lower flange 22, and a web 23. H-section steels are used and are arranged so as to be substantially parallel to each other.
Further, as shown in FIG. 4B, these first and second inter-beam steel frame beams 2-1 and 2-2 have a length in the lumber axial direction as a lumber axial length (member length) L1-. As 1 and L1-2, they extend in the beam-to-beam direction Y, respectively. Then, in the case of the first inter-beam steel beam 2-1 the both ends 2a and 2b in the inter-beam direction Y are joined to the opposite first steel column 4-1 and the second steel column 4-2, respectively. In the case of the second inter-beam steel beam 2-2, both ends 2a and 2b in the inter-beam direction Y are joined to the opposite third steel column 4-3 and the fourth steel column 4-4, respectively. There is.
The first inter-beam steel beam 2-1 and the second inter-beam steel beam 2-2 have different timber axial lengths L1-1 and L1-2, as will be described later.

As shown in FIG. 5A, the first girder steel beam 3-1 and the second girder steel beam 3-2 have a substantially H-shaped cross section having an upper flange 31, a lower flange 32, and a web 33. H-section steels are used and are arranged so as to be substantially parallel to each other.
Further, as shown in FIG. 5 (b), these first and second girder steel beams 3-1 and 3-2 have the length in the lumber axial direction as the length in the lumber axial direction L2-1 and L2-. As 2, each extends in the column direction X. Then, in the case of the first girder steel beam 3-1, both ends 3a and 3b of the girder direction X are joined to the opposite first steel column 4-1 and the third steel column 4-3, respectively. In the case of the second girder steel beam 3-2, both ends 3a and 3b of the girder direction X are joined to the opposite second steel column 4-2 and the fourth steel column 4-4, respectively. There is.
The first girder steel beam 3-1 and the second girder steel beam 3-2 have different timber axial lengths L2-1 and L2-2 as described later.

In this embodiment, the inter-beam steel beam 2-1 and 2-2 and the girder steel beam 3-1 and 3-2 forming the steel-framed building 1 have the flange widths of the upper flanges 21 and 31 and the lower flange. The flange widths of 22 and 32 are set to be substantially the same as each other, and both the inter-beam steel beam 2-1 and 2-2 and the girder steel beam 3-1 and 3-2 are set to the upper flanges 21 and 31 and the lower. The flange widths of the flanges 22 and 32 are almost the same as each other. Further, the beam lengths of the inter-beam steel frames 2-1 and 2-2 and the girder steel frames 3-1 and 3-2 are set to be almost the same.

Further, as shown in FIG. 6, in the steel-framed building 1 in this embodiment, the first and second inter-beam steel-framed beams 2-1 and 2-2 and the first and second beams 1 and the second beam are the first and second sections SB ₁ to be formed. The girder steel beams 3-1 and 3-2 are arranged so that the upper surfaces of the upper flanges 21 and 31 of the respective steel beams are all at substantially the same height position. Then, the upper surfaces of the upper flanges 21 of the first and second inter-beam steel beams 2-1 and 2-2 and the upper flanges 31 of the first and second girder steel beams 3-1 and 3-2. A floor slab 7 made of concrete or the like is placed on the upper surface. As a result, the load of the floor slab 7 is supported from below by the first and second inter-beam steel frames 2-1 and 2-2 and the first and second girder steel frames 3-1 and 3-2. ing.

As shown in FIGS. 3, 7, and 8, the first to fourth steel columns 4-1 to 4-4 are along the beam-to-beam direction Y, which is the first direction, or the girder direction X, which is the second direction. Each of the flat plate-shaped first webs 42 formed and formed toward the direction Y in the beam-to-beam direction or the direction along the girder direction X is provided. In the first web 42, the direction along the beam-to-beam direction Y or the girder direction X is the web width direction. Further, the first to fourth steel columns 4-1 to 4-4 are provided at both ends of the first web 42 in the web width direction, and are the first steel beams, the inter-beam steel beam 2 or the second. A pair of flat plate-shaped first flanges 41a and 41b formed in a direction orthogonal to the web width direction of the first web 42 to which the ends of the girder steel beam 3 which is a steel beam 3 in the material axis direction are joined. Each has.
Further, it is joined to one side (in this case, the web surface 42b) of the two web surfaces 42b, 42b'of the first web 42, and is formed along a direction orthogonal to the web surface 42b of the first web 42. It is provided with a flat plate-shaped second web 45. The direction orthogonal to the web surface 42b of the second web 45 is the web width direction. Further, it has a flat plate-shaped second flange 46 provided at an end opposite to the first web 42 in the web width direction of the second web 45 (that is, a direction orthogonal to the first web 42). ing. The second flange 46 is formed in a direction orthogonal to the web surface of the second web 45, and extends in a direction different from that of the steel beam joined to the first flanges 41a and 41b. Alternatively, the end portion of the girder steel beam 3 in the material axial direction is joined.
As for the first flanges 41a and 41b, the plate surface on the side opposite to the connecting side (outer side) with the first web 42 is a steel frame beam of either the inter-beam steel frame beam 2 or the girder steel frame beam 3. The beam joining surfaces to be joined are 43a and 43b. Further, regarding the second flange 46, between the beams whose plate surface on the side opposite to the connecting side (outer side) with the second web 45 extends in a direction different from that of the steel frame beams joined to the first flanges 41a and 41b. It is a beam joint surface 46a to which either the steel beam 2 or the girder steel beam 3 is joined.

Specifically, among the first to fourth steel frame columns 4-1 to 4-4, the first steel frame column 4-1 and the third steel frame column 4-3 are as shown in FIGS. 3 and 7. , The first web 42 is installed in a state of protruding in the beam-to-beam direction Y (that is, a state in which the web width direction is in the direction along the beam-to-beam direction Y), and the pair of first flanges 41a and 41b are provided with inter-beam steel frames. The ends of the beams 2-1 and 2-2 in the beam-to-beam direction Y (material axis direction) are joined. More specifically, one of the first flanges 41a is used for forming the formation target section SB ₁ in this embodiment (in this embodiment, the first flange is referred to as "the first on the formation target section side". (1 flange)), on the beam joint surface 43a of the first flange 41a on the formation target section side, in the case of the first steel frame column 4-1 the material shaft of the first inter-beam steel frame beam 2-1. When the end portion 2a in the direction is the third steel frame column 4-3, the end portion 2a in the material axial direction of the second inter-beam steel frame beam 2-2 is joined.
Further, the second flange 46 has a girder steel beam 3-that extends in the girder direction X, which is a direction different from the material axial direction of the inter-beam steel beams 2-1 and 2-2 attached to the first flanges 41a and 41b. The ends of 1, 3-2 in the girder direction X (material axis direction) are joined. More specifically, the second flange 46 has an end portion on the beam joint surface 46a, which is one end side in the material axial direction of the first girder steel frame beam 3-1 in the case of the first steel frame column 4-1. When 3a is the third steel column 4-3, the end 3b on the other end side of the first girder steel beam 3-1 in the material axis direction is joined.

On the other hand, in the second steel frame column 4-2 and the fourth steel frame column 4-4, as shown in FIG. 8, the first web 42 protrudes in the girder direction X (that is, the web width direction is the girder direction). It is installed in the direction along X), and the ends of the girder row steel beams 3-1 and 3-2 in the girder row direction X (material axis direction) are joined to the pair of first flanges 41a and 41b. Has been done. More specifically, the first flange 41a on the formation target section side has a beam joining surface 43a of the first flange 41a on the formation target section side, and in the case of the second steel column 4-2, the second girder steel frame. In the case where the end 3a on one end side of the beam 3-2 in the material axis direction is the fourth steel frame column 4-4, the end portion on the other end side in the material axis direction of the second girder steel frame beam 3-2. 3b are joined to each other.
Further, the second flange 46 has an inter-beam steel beam 2- that extends in the inter-beam direction Y, which is a direction different from the material axis direction of the girder steel frames 3-1 and 3-2 attached to the first flanges 41a and 41b. The ends of 1 and 2-2 in the beam-to-beam direction Y (material axis direction) are joined. More specifically, the second flange 46 has a beam joint surface 46a, and in the case of the second steel frame column 4-2, the first steel frame column 4 in the material axial direction of the first inter-beam steel frame beam 2-1. When the end 2b on the opposite side to -1 is the fourth steel column 4-4, it is on the opposite side of the third steel column 4-3 in the material axis direction of the second inter-beam steel beam 2-2. The ends 2b are joined to each other.

Further, the first steel pillar 4-1 and the third steel pillar 4-3, which are the middle pillars, are added to the first web 42, the pair of first flanges 41, 41, the second web 45, and the second flange 46. The web surface 42b, 42b of the first web 42 is formed along a direction orthogonal to the first web 42, which is joined to the web surface 42b'on the side opposite to the surface to which the second web 45 is joined. It has a third web 48 that has been created. The third web 48 is provided so as to project so that the web width direction is orthogonal to the first web 42. Further, the first steel column 4-1 and the third steel column 4-3 are provided at the end of the third web 48 opposite to the first web 42 in the web width direction, and the third web 48 is provided. It has a third flange 49 formed in a direction orthogonal to the relative.

The third web 48 and the third flange 49 in the first steel column 4-1 and the third steel column 4-3 are steel beams joined to the second flange 46 (in this embodiment, girder steel beams). Is used to form a section different from the section formed by (in this case, the section to be formed SB ₁ ), and a steel beam for forming another section on the third flange 49 (in the case of this embodiment). The ends of the girder (steel beam) in the direction of the material axis are joined. At this time, with respect to the third flange 49, the plate surface on the side opposite to the connecting side (outer side) with the first web 42 becomes the beam joining surface 49a to be joined to the steel frame beam.

On the other hand, in this embodiment, the second steel column 4-2 and the fourth steel column 4-4, which are the side columns, are the first steel column 4-1 and the third steel column 4-3. Such a third web and a third flange are not provided.

In the first to fourth steel frame columns 4-1 to 4-4 in this embodiment, the first flanges 41a and 41b are joined to the first web 42 substantially at the center in the flange width direction, and the second flange 46 is joined. Is joined to the second web 45 substantially at the center in the flange width direction. Further, the third web 48 is joined to the third flange 49 of the first steel frame column 4-1 and the third steel frame column 4-3 at substantially the center in the flange width direction.
Further, in this embodiment, the flange widths of the first flanges 41a and 41b of the first to fourth steel frame columns 4-1 to 4-4, the flange widths of the second flange 46, and the first steel frame columns 4- The flange widths of the third flanges 49 of the first and third steel columns 4-3 are substantially the same in size. Further, the first to third flanges have a flange width of each of the upper flange 21 and the lower flange 22 of the inter-beam steel frame beams 2-1 and 2-2 and the girder steel frame beams 3-1 and 3-2. It is almost the same size as.

Further, the first to fourth steel frame columns 4-1 to 4-4 in this embodiment include a first member 40 having a first web 42 and a pair of first flanges 41a and 41b, a second web 45, and the like. It is formed by a second member 44 provided with a second flange 46. Further, the first steel frame column 4-1 and the third steel frame column 4-3, which are the middle columns, are further configured to have a third member 47 provided with a third web 48 and a third flange 49. ing.

Specifically, the first member 40 is formed of H-shaped steel having a substantially H-shaped cross section in which a pair of first flanges 41a and 41b are arranged at both ends 42a and 42a of the first web 42 in the web width direction. The second member 44 is formed of a CT-shaped steel having a second web 45 and a second flange 46 and having a substantially T-shaped cross section. The first member 40 and the second member 44 are joined to each other by welding or the like with the second web 45 on one surface side (in this case, the web surface 42b side) of the web surface of the first web 42. .. Further, the third member 47 forming a part of the first steel frame column 4-1 and the third steel frame column 4-3 has a CT shape having a substantially T-shaped cross section having a third web 48 and a third flange 49. The first member 40 and the third member 47 are made of steel, and the third member 40 is a surface side of the web surface of the first web 42 opposite to the second web (in this case, the web surface 42b'. The side) is joined to each other by welding or the like.

Here, in this embodiment, the first to fourth steel frame columns 4-1 to 4-4 forming one section, that is, the formation target section SB ₁ , are respectively in the web thickness direction of the first web 42. When the intersection of the axis and the axis of the second web 45 in the web thickness direction is the first intersection R1, the inter-beam steel beam 2-1 and 2 which are the first steel beams forming the formation target section SB ₁ The distance between the beam joining surfaces 43a and 46a of the first flange 41a or the second flange 46 to which -2 is joined and the first intersection R1 is defined as the first distance. Further, the second flange 46 (that is, the second flange 46 (that is,) to which the girder steel beam 3-1 and 3-2, which are the second steel beams forming the formation target section SB ₁ , are joined, and the inter-beam steel beams 2-1 and 2-2 are not joined. , When the inter-beam steel beam is joined to the first flange) or the beam joining surfaces 43a, 46a in the first flange 41a (that is, when the inter-beam steel beam is joined to the second flange), and the first intersection R1. The distance between the two is the second distance.

Therefore, with respect to the section to be formed SB ₁ , the first steel column 4-1 has a first distance h1-1 in the beam-to-beam direction Y and a second distance h3-1 in the girder direction X, respectively, and the second steel column 4 -2 has a first distance h2-1 in the beam-to-beam direction Y and a second distance h3-2 in the girder direction X, respectively. Further, the third steel column 4-3 has a first distance h1-2 in the beam-to-beam direction Y, a second distance h4-1 in the girder direction X, and the fourth steel column 4-4 has a beam-to-beam direction Y. It has a first distance h2-2 and a second distance h4-2 in the column direction X, respectively.
As a result, the distance D1 between the first intersection point R1 of the first steel frame column 4-1 and the first intersection point R1 of the second steel frame column 4-2 with respect to the length of the formation target section SB ₁ in the beam-to-beam direction Y. -1 is the timber axis of the first distance h1-1 of the first steel column 4-1 and the first distance h2-1 of the second steel column 4-2 and the first inter-beam steel beam 2-1. It is the sum of the direction length L1-1. Further, the distance D1-2 between the first intersection R1 of the third steel column 4-3 and the first intersection R1 of the fourth steel column 4-4 is the first of the third steel columns 4-3. It is the sum of the distance h1-2, the first distance h2-2 of the fourth steel column 4-4, and the length L1-2 of the second inter-beam steel beam 2-2 in the material axis direction.
On the other hand, with respect to the length of the girder direction X of the formation target section SB ₁ , the distance D2-between the first intersection R1 of the first steel column 4-1 and the first intersection R1 of the third steel column 4-3. 1 is the second distance h3-1 of the first steel column 4-1 and the second distance h4-1 of the third steel column 4-3, and the material axis direction of the first girder steel beam 3-1. It is the sum of the length L2-1. Further, the distance D2-2 between the first intersection R1 of the second steel column 4-2 and the first intersection R1 of the fourth steel column 4-2 is the second of the second steel column 4-2. It is the sum of the distance h3-2, the second distance h4-2 of the fourth steel column 4-4, and the length L2-2 in the material axis direction of the second girder steel beam 3-2.
Since the formation target section SB ₁ is formed in a substantially square shape in a plan view, the distances D1-1, D1-2, D2-1, and D2-2 of the first intersection tube of each steel column are mutually. It is about the same size.

Regarding the first distance of the present invention, since there is a pair of first flanges in one steel frame column, one first flange is used for forming a section to be formed, and the other first flange is adjacent to the other. However, as described above, the first distance is the beam in the first flange provided to the formation target section, that is, the first flange on the formation target section side. The distance between the joint surface and the first intersection. Therefore, when the other adjacent sections are focused on as the formation target sections, the distance between the beam joining surface and the first intersection in the other first flange is the first distance.

Then, at least one of the first to fourth steel columns 4-1 to 4-4 forming the formation target section SB ₁ is adjacent to each other in the girder direction X, which is the second direction, as the first condition. The size of the first distance is different from that of other matching steel columns, and the second condition is that the size of the second distance is different from that of other adjacent steel columns in the beam-to-beam direction Y, which is the first direction. It meets one or both of the conditions of being different from each other.

Specifically, in this embodiment, as shown in FIG. 3, the first steel column 4-1 which is the middle column is beam-joined to the second web 45 and the first girder steel beam 3-1. The second flange 46 having the surface 46a is opposite to the first flange 41a on the side to be formed, and is used for forming another section (in this case, large sections LB ₁ and LB ₂ ). (Hereinafter, it may be referred to as "the first flange on the other section side".) It is provided at a position biased toward the 41b side, and the first intersection R1 is located near the first flange 41b side on the other section side. More specifically, the second web 45 of the first steel column 4-1 is the lower end of the second flange 46 on the other section side in the flange width direction (lower part of the second flange 46 in FIGS. 3 and 7). The end on the side) is located on the same plane as the beam joining surface 43b of the first flange 41b on the other section side, and is offset to the first flange 41b side on the other section side on the first web 42. It is joined. Therefore, in the first steel frame column 4-1, most of the first web 42 is adjacent to the formation target section SB ₁ side, that is, in the beam-to-beam direction Y, as compared with the other section side. It is a mode that greatly protrudes to the 4-2 side.

Further, as shown in FIGS. 3 and 7, the third steel column 4-3, which is a middle column, has a beam joining surface 46a with the second web 45 and the first girder steel beam 3-1. The two flanges 46 are provided substantially in the center of the first web 42 in the web width direction, and the first intersection R1 is located substantially in the center of the first web 42. Therefore, in the third steel frame column 4-3, the first web 42 is on the formation target section SB ₁ side, that is, the fourth steel frame column 4-4 side adjacent to the beam-to-beam direction Y, and the other section side ( In this case, the aspect is such that it protrudes from the large compartment LB ₂ and LB ₃ side) with almost the same length.

At this time, as shown in FIGS. 3 and 7, the first web 42 of the first steel frame column 4-1 and the first web 42 of the third steel frame column 4-3 have substantially the same web width. Is formed in. Therefore, from the positional relationship of the first intersection R1 on the first web 42, the first distance h1-1 of the first steel frame column 4-1 is the first distance of the third steel frame column 4-3 with respect to the beam-to-beam direction Y. It is larger than h1-2.
Therefore, the beam joint surface 43a with the first flange 41a on the formation target section side of the first steel frame column 4-1 and the first inter-beam steel frame beam 2-1 is the formation target of the third steel frame column 4-3. In the position overhanging in the beam-to-beam direction Y on the formation target section SB ₁ side, that is, in the formation target section SB ₁ , as compared with the beam joint surface 43a with the first flange 41a on the section side and the second inter-beam steel frame beam 2-2. It will be arranged at a position overhanging on the side of the steel frame column adjacent to each other in the beam-to-beam direction Y.

Further, as shown in FIGS. 3 and 7, in the first steel frame column 4-1 the web width of the second web 45 is larger than the web width of the second web 45 of the third steel frame column 4-3. It is formed small. Therefore, with respect to the girder direction X, the second distance h4-1 of the third steel frame column 4-3 is larger than the second distance h3-1 of the first steel frame column 4-1.
Therefore, the beam joint surface 46a with the second flange 46 of the third steel column 4-3 and the first girder steel beam 3-1 is the second flange 46 of the first steel column 4-1 and the first. A steel column (this) adjacent to the girder direction X in the position overhanging in the girder direction X on the formation target section SB ₁ side, that is, in the formation target section SB 1 as compared with the beam joint surface 46a with the girder steel beam 3-1 of ₁ . In this case, it is arranged at a position overhanging to the first steel frame column 4-1) side.

On the other hand, as shown in FIGS. 3 and 8, the second steel frame column 4-2, which is a side column, has a beam joining surface 46a with the second web 45 and the first inter-beam steel frame beam 2-1. The two flanges 46 are provided substantially in the center of the first web 42 in the web width direction, and the first intersection R1 is located substantially in the center of the first web 42 in the web width direction. Therefore, in the second steel frame column 4-2, the first web 42 is on the formation target section SB ₁ side, that is, the fourth steel frame column 4-4 side adjacent to the column direction X, and the other section side ( In this case, the small section SB ₂ and the large section LB ₁ side) are projected to have substantially the same length.
Further, in the fourth steel frame column 4-4 which is a side column, the second flange 46 having the beam joint surface 46a with the second web 45 and the second inter-beam steel frame beam 2-2 is the first web 42. It is provided substantially in the center of the web width direction, and the first intersection R1 is located substantially in the center of the first web 42 in the web width direction. Therefore, in the fourth steel frame column 4-4, the first web 42 is on the formation target section SB ₁ side, that is, the second steel frame column 4-2 side adjacent to the column direction X, and the other section side ( In this case, the small section SB ₃ and the large section LB ₃ side) are projected to have substantially the same length.

At this time, as shown in FIGS. 3 and 8, the second steel frame column 4-2 and the fourth steel frame column 4-4 are formed so that the web widths of the second web 45 are substantially the same as each other. ing. Therefore, from the positional relationship of the first intersection R1 on the first web 42, the first distance h2-1 of the second steel frame column 4-2 and the first distance h2-2 of the fourth steel frame column 4-4 are It is about the same size.
Therefore, the beam joint surface 46a with the second flange 46 of the second steel frame column 4-2 and the first inter-beam steel frame beam 2-1 and the second flange 46 of the fourth steel frame column 4-4 and the second. The beam joining surface 46a with the inter-beam steel frame beam 2-2 of 2 is the position protruding in the beam-to-beam direction Y on the formation target section SB ₁ side, that is, the same as the steel frame column side adjacent to the beam-to-beam direction Y in the formation target section SB ₁ . It will be placed in a position that overhangs to some extent.

Further, as shown in FIGS. 3 and 8, the first web 42 of the second steel frame column 4-2 and the first web 42 of the fourth steel frame column 4-4 have substantially the same web width. It is formed. Therefore, from the positional relationship of the first intersection R1 on the first web 42, the second distance h3-2 of the second steel frame column 4-2 and the second distance h4-2 of the fourth steel frame column 4-4 are It is about the same size.
Therefore, the beam joint surface 43a with the first flange 41a on the formation target section side of the second steel column 4-2 and the second girder steel beam 3-2, and the formation target of the fourth steel column 4-4. The beam joint surface 43a with the first flange 41a on the section side and the second girder steel beam 3-2 is a position overhanging in the girder direction X on the formation target section SB ₁ , that is, the girder line in the formation target section SB ₁ . It will be placed at a position that overhangs to the same extent on the side of the steel frame column adjacent to the direction X.
In addition, in this embodiment, the second steel frame column 4-2 and the fourth steel frame column 4-4 forming the formation target section SB ₁ are of substantially the same size and the same shape, and both of them are used. In a plan view, the second web 45 is symmetrical with respect to the axis in the web thickness direction.

Here, regarding the aspect of the girder direction X of the first to fourth steel frame columns 4-1 to 4-4 forming the formation target section SB ₁ , as described above, the second steel frame columns 4-2 and the fourth Regarding the steel column 4-4 of the above, the beam joining surface 43a joined to the second girder steel beam 3-2 is the formation target section SB ₁ side of the girder direction X by the second distance h3-2, h4-2. Each overhangs. On the other hand, for the first steel column 4-1 and the third steel column 4-3, the beam joining surface 46a joined to the first girder steel beam 3-1 has a second distance h3-1, respectively. Each of them overhangs to the formation target section SB ₁ side in the column direction X by the amount of h4-1.
At this time, the second distance h3-2 of the second steel frame column 4-2 and the second distance h4-2 of the fourth steel frame column 4-2 are the second distance h3- of the first steel frame column 4-1. It is set to be almost equal to 1. Therefore, the third steel column 4-3 having the second distance h4-2 larger than the second distance h3-1 of the first steel column 4-1 is the second distance of the second steel column 4-2. It is larger than h3-1 and the 4th steel column 4-4 second distance h4-2.
Therefore, the third steel column 4-3 and the fourth steel column 4-4 adjacent to the third steel column 4-3 in the beam-to-beam direction Y, which is the first direction, have a second distance. Are different from each other, so that the above-mentioned second condition is satisfied.
As a result, the second distance of the third steel frame column 4-3 is from the second distance of each of the first steel frame column 4-1, the second steel frame column 4-2, and the fourth steel frame column 4-4. The length L2-1 in the material axis direction of the first girder steel frame beam 3-1 forming the formation target section SB ₁ is the length L2-in the material axis direction of the second girder steel frame beam 3-2. It is smaller than 2.

Further, with respect to the aspect of the beam-to-beam direction Y of the first to fourth steel frame columns 4-1 to 4-4 forming the formation target section SB ₁ , as described above, the first steel frame columns 4-1 and the second steel frame columns 4-1 and the second. In the case of the steel frame column 4-2, the beam joining surfaces 43a and 46a joined to the first inter-beam steel frame beam 2-1 are the third in the case of the third steel frame column 4-3 and the fourth steel frame column 4-4. The beam joining surfaces 43a and 46a joined to the inter-beam steel frame beam 2-2 of No. 2 project to the formation target section SB ₁ side in the beam-to-beam direction Y by the respective first distances.
At this time, what are the first distances h1-1 of the first steel frame column 4-1 and the first distances h2-1 and h2-2 of the second steel frame columns 4-2 and the fourth steel frame column 4-4? It is set to be almost equal. Therefore, the third steel column 4-3 having the first distance h1-2 smaller than the first distance h1-1 of the first steel column 4-1 is the first distance of the second steel column 4-2. It is smaller than the first distance h2-2 of h2-1 and the fourth steel column 4-4.
Therefore, the third steel column 4-3 and the first steel column 4-1 adjacent to the third steel column 4-3 in the girder direction X, which is the second direction, have a magnitude of the first distance. Are different from each other, so that the above-mentioned first condition is satisfied.
As a result, the first distance h1-2 of the third steel frame column 4-3 is each of the first steel frame column 4-1 and the second steel frame column 4-2 and the fourth steel frame column 4-4. The length L1-1 in the material axis direction of the first inter-beam steel frame beam 2-1 forming the formation target section SB ₁ is the second one because it is smaller than the first distances h1-1, h2-1 and h2-2. It is smaller than the length L1-2 of the inter-beam steel frame beam 2-2 in the material axis direction.

Further, the first steel pillar 4-1 and the third steel pillar 4-3, which are the middle pillars, have the third web 48 and the third flange 49 as described above, but the first web. When the intersection of the axis in the thickness direction of the web 42 and the axis in the thickness direction of the third web 48 is the second intersection R2, the third web 48 is the second in the web width direction at the second intersection R2. The end portion in the direction opposite to the 3 flange 49 side is joined to the web surface 42b'on the opposite side of the second web 45 in the first web 42.
In the case of the first steel column 4-1 the second intersection R2 substantially coincides with the first intersection R1, and the third web 8 is the axis of the third web 48 in the web thickness direction and the second web 45. It is arranged so that the axis in the thickness direction of the web is located almost in a straight line. Further, the web width of the third web 48 of the first steel frame column 4-1 is set to be substantially the same as the web width of the second web 45, and the second intersection R2 and the third flange 49 When the distance from the beam joint surface 49a is the third distance, the third distance and the second distance h3-1 have almost the same size. Therefore, the first steel frame column 4-1 has a shape substantially symmetrical with respect to the axis in the web thickness direction of the first web 42 in a plan view.

Further, in the case of the third steel column 4-3, the second intersection R2 substantially coincides with the first intersection R1 and the third web 48 is the third web, as in the case of the first steel column 4-1. The axis in the web width direction of 48 and the axis in the web thickness direction of the second web 45 are arranged so as to be positioned substantially in a straight line. However, in this third steel column 4-3, the web width of the third web 48 is smaller than the web width of the second web 45, and therefore the third distance is smaller than the second distance h4-1. ..
Specifically, the third web 48 of the third steel column 4-3 is a steel beam forming another section at the third flange 49 (in this case, a girder line forming the small section SB ₃ and the large section LB ₃ ). The beam joint surface 49a to be joined to the steel beam) forms another section (in this case, the small section SB ₃ and the large section LB ₃ ) in the flange width direction (in this case, the girder direction X) of the first flange 41. It is projected in the girder direction X on the other section side so as to be flush with the provided end (the right end in the first flanges 41a and 41b in FIGS. 3 and 7). Therefore, the third steel frame column 4-3 has a shape substantially symmetrical with respect to the axis in the web thickness direction of the second web 45 and the third web 48 in a plan view.

By the way, the steel-framed building 1 is provided with a wall material that partitions between adjacent sections or between adjacent exclusive portions P.
The wall materials are both side surfaces of the inter-beam steel beam 2-1 and 2-2, which is the first steel beam, in the direction along the lumber axis direction, and the girder steel beam 3-1, 3-2, which is the second steel beam. It is provided on both side surfaces in the direction along the material axis direction in the above. A pair of flat plate-shaped first wall materials 62, 62 formed in the beam-to-beam direction Y and the height direction are attached to the inter-beam steel beams 2-1 and 2-2, and each girder-lined steel beam 3-1, A pair of flat plate-shaped second wall members 63 and 63 formed in the girder direction X and the height direction are attached to 3-2, respectively. The walls on one side of the first wall materials 62 and 62 and the wall surfaces on the one side of the second wall materials 63 and 63 are oriented toward the inside of the section or the exclusive portion.

Each of the steel columns forming the steel-framed building 1 is located between the beams in the space between the pair of first wall members 62, 62 provided on both side surfaces of the inter-beam steel beam in the direction along the material axis direction. A first flange or a second flange to which a steel beam is joined is arranged. Further, in the space between the pair of second wall members 63, 63 provided on both side surfaces in the direction along the lumber axis direction of the girder steel beam, the second flange to which the girder steel beam is joined in each steel column. Alternatively, the first flange is arranged.

In the case of the formation target section SB ₁ in this embodiment, the first flange 41a on the formation target section side for the first steel frame column 4-1 and the second steel frame column 4-2 for the second steel frame column 4-2 with respect to the beam-to-beam direction Y. Flange 46s are respectively arranged in the space between the pair of first wall members 62, 62 provided on both side surfaces of the first inter-beam steel frame beam 2-1 in the direction along the material axial direction.
Along with this, a part of the first steel frame column 4-1 near the first flange 41a on the formation target section side in the first web 42, and the second flange of the second steel frame column 4-2 in the second web 45. A part of the 46 side is also arranged in the space between the pair of first wall members 62 and 62 provided in the first inter-beam steel frame beam 2-1.

Further, for the third steel frame column 4-3, the first flange 41a on the formation target section side is used, and for the fourth steel frame column 4-4, the second flange is used for the second inter-beam steel frame beam 2-2. They are arranged in the space between the pair of first wall members 62, 62 provided on both side surfaces in the direction along the material axis direction, respectively.
Along with this, a part of the third steel column near the first flange on the formation target section side in the first web and a part of the fourth steel column near the second flange in the second web are also second. It is an embodiment arranged in the space between the pair of first wall materials provided in the inter-beam steel frame beam.

On the other hand, regarding the girder direction X, the second flange 46 for the first steel column 4-1 and the second flange 46 for the third steel column 4-3 are the members of the first girder steel beam 3-1. They are arranged in the space between the pair of second wall members 63, 63 provided on both side surfaces in the axial direction, respectively.
Along with this, a part of the first steel frame column 4-1 near the second flange 46 in the second web 45, and a part of the third steel frame column 4-3 near the second flange 46 in the second web 45. Also, the mode is such that they are arranged in the space between the pair of the second wall members 63, 63 provided in the first girder steel frame beam 3-1.

Further, for the second steel column 4-2, the first flange 41a on the formation target section side is used, and for the fourth steel column 4-4, the first flange 41a on the formation target section side is the second girder steel beam. They are arranged in the space between the pair of second wall members 63, 63 provided on both side surfaces in the direction along the material axis direction in 3-2, respectively.
Along with this, a part of the second steel column 4-2 near the first flange 41a on the formation target section side in the first web 42, and the formation target section of the fourth steel column 4-4 in the first web 42. A part of the side near the first flange 41a is also arranged in the space between the pair of second wall members 63 and 63 provided in the second girder steel frame beam 3-2, respectively.
Of the side surfaces of the second girder steel beam 3-2 in the direction along the lumber axis direction, the second wall material 63 located on the surface opposite to the formation target section SB ₁ is a steel-framed building 1. It is an outer wall material that forms the outer wall of the siding.

In this way, each steel column is formed by arranging the first flange and the second flange in the space between the pair of first wall materials 62, 62 and the pair of second wall materials 63, 63. In SB ₁ , the end of the flat plate-shaped first wall material 62 in the beam-to-beam direction Y and the end of the flat plate-shaped second wall material 63 adjacent to the first wall material 62 in the girder direction X are directly connected to each other. The wall surface of the first wall material 62 (the surface extending in the beam-to-beam direction Y and the height direction) and the wall surface of the second wall material 63 (the surface extending in the girder direction X and the height direction) are substantially orthogonal to each other. It is possible to make it.
As a result, in the compartments SB, LB and the exclusive portion P, the column types of the first to fourth steel frame columns 4-1 to 4-2 that project into the SB, LB and the exclusive portion P in these compartments are formed. Since it is not formed, the first wall material 62 and the second wall material 63 are placed on both side surfaces extending in the material axial direction of the inter-beam steel frame beams 2-1 and 2-2 and the girder steel frame beams 3-1 and 3-2. Can be provided along. Therefore, it is possible to omit the work of processing the wall material according to the pillar shape protruding from the section or the exclusive part as in the past, facilitating the construction of the wall material and significantly shortening the time required for the construction of the wall material. Is possible.

The steel-framed building 1 having the above structure includes a first web 42 formed along the beam-to-beam direction Y or the girder direction X, and the first web provided at both ends of the first web 42 in the web width direction. A pair of first flanges 41a, 41b formed in a direction orthogonal to the web width direction and one surface side of the web surface 42b, 42b'of the first web 42 are joined to the web surface of the first web 42. The second web 45 formed in the direction orthogonal to the first web 45 and the second web 45 provided at the end opposite to the first web 42 in the web width direction of the second web 45 are orthogonal to the web width direction of the second web 45. A steel column 4 having a second flange 46 formed along the direction is used.
As a result, since the conventional square steel pipe is not used as a column, the structure can be such that the column shape is not formed even when the steel beam 2 and 3 are joined to the steel column 4. Therefore, it is possible to secure a wider interior space such as the exclusive part P of the building as compared with the case where there is a pillar shape, and improve the functionality and aesthetics of the interior space to improve the functionality and aesthetics of the interior space, such as a hotel, hospital, or condominium. It is possible to increase the added value such as. Furthermore, since it is not necessary to form a pillar shape, the work of processing the wall material can be omitted as compared with the case of forming a protruding pillar shape as in the conventional case, and the time required for constructing the wall material is greatly reduced. It becomes possible.

Further, at least one of the four steel columns 4-1 to 4-4 forming the formation target section SB ₁ has a size of the first distance from the other adjacent steel columns in the girder direction X. It satisfies at least one of the two being different from each other and the size of the second distance being different from that of other steel columns adjacent to each other in the beam-to-beam direction Y. As a result, the length of the pair of inter-beam steel beams 2-1 and 2-2 forming one section in the material axis direction and / or the length of the girder steel frames 3-1 and 3-2 in the material axis direction. Can be of different sizes from each other, so that the length of each steel column 4-1 to 4-2 in the material axis direction and the length of each steel frame beam in the material axis direction can be set relatively freely. , The degree of freedom in designing the entire steel-framed building 1 is improved.
Moreover, in the four steel columns 4-1 to 4-4 forming the formation target section SB ₁ , the distances between the steel columns adjacent to the beam-to-beam direction Y and the girder direction X are D1-1, D1-2, D2-1. , Even when D2-2 is constant, by adjusting the first distance and the second distance of each steel column 4-1 to 4-2, the length in the material axis direction of the inter-beam steel beam and the girder steel beam can be easily increased. It can be adjusted, and in this respect as well, the degree of design freedom can be increased.

Further, when the lengths of the pair of inter-beam steel beams 2-1 and 2-2 are different from each other, the length in the material axial direction is longer than that of one inter-beam steel beam (in this case, the second inter-beam steel beam 2-2). The other inter-beam steel beam (in this case, the first inter-beam steel beam 2-1) having a small size can be designed to have a lower mechanical strength than the one inter-beam steel beam due to the smaller length in the material axial direction. , Beam width, flange width, etc. can be suppressed to reduce the cross-sectional dimensions. Further, it is possible to reduce the material cost when constructing the steel-framed building 1, and there is also an advantage that the weight of the steel-framed beam between beams can be reduced. Further, for example, when the flange width is suppressed, the distance between the wall materials 62 and 62 attached to the inter-beam steel beam can be reduced, so that it depends on the thickness of the wall material 62. The formation target section SB ₁ can be expanded, and the indoor space of the exclusive portion P can be secured widely.
Further, even when the lengths of the pair of girder steel beams 3-1 and 3-2 are different from each other, the girder steel beam having a small length in the material axis direction (in this case, the second girder steel beam 3-2). Can have a smaller cross-sectional dimension than the girder-row steel beam (in this case, the first girder-lined steel beam 3-1) having a large length in the material axis direction. The same effect as when the lengths of 2-2 are different from each other can be obtained.

Further, for the first steel frame column 4-1 and the third steel frame column 4-3, which are the middle columns, the third web 48 and the third flange 49 are provided, so that the third web 48 and the third web 48 and the third are provided. The section formed by the flange 49 (that is, the third web 48 and the third flange 49 are the sections (in this embodiment, the small section SB ₂ and the large section LB ₁ for the first steel column 4-1). Regarding the steel frame column 4-3 of 3, in the case where the small section SB ₃ and the large section LB ₃ ) substantially correspond to the second web and the second flange), the steel frame columns 4-1 and 4-3 are also provided. It is possible to have a structure in which a pillar shape is not formed when a steel beam is joined to the flange.
Further, when the third web 48 and the third flange 49 correspond to the second web and the second flange in other sections, the sections formed by the third web 48 and the third flange 49 are formed. The four steel columns according to the above are either different in the size of the first distance from the other adjacent steel columns in the girder direction X, or the second distance from the other adjacent steel columns in the beam-to-beam direction Y (in this case). , Substantially the distance between the second intersection and the beam joining surface of the third flange) can satisfy at least one of the different sizes. Therefore, in each section of the steel-framed building 1, the length in the material axis direction of each steel frame column, the length in the material axis direction of each steel frame beam, etc. can be set relatively freely, and the entire steel frame structure 1 can be set. The degree of design freedom can be maintained.

In the above embodiment, at least one of the steel columns forming one section (in this case, the section to be formed SB ₁ ) is first with the other steel columns adjacent to each other in the girder direction, which is the second direction. Both the conditions that the magnitudes of the distances are different from each other and that the magnitudes of the second distances are different from those of other steel columns adjacent to each other in the beam-to-beam direction, which is the first direction, are satisfied. In the present invention, it is sufficient that at least one of these two conditions is satisfied. Even when only one of the conditions is satisfied, it is possible to relatively freely set the length in the material axis direction of each steel frame column, the length in the material axis direction of each steel frame beam, etc., and it is possible to set the steel frame structure. The degree of freedom in the overall design can be sufficiently secured. Regarding the above-mentioned two conditions, when a plurality of sections are formed in a steel-framed building, it is sufficient that one of the plurality of sections is satisfied.

In the above-described embodiment, in the steel-framed building 1, the first direction is the beam-to-beam direction Y, which is the lateral direction in the plan view, the second direction is orthogonal to the beam-to-beam direction Y, and the longitudinal direction in the plan view is the girder direction. Although it is assumed that X has a substantially rectangular shape in a plan view as a whole, for a steel-framed building, the first direction may be the beam-to-beam direction and the second direction may be the girder direction. Further, the steel-framed building does not have to have a shape having a beam-to-beam direction or a girder direction, and may have a shape such as a substantially square shape in a plan view in which the lengths in the first direction and the second direction are substantially the same. ..
Further, in the above-described embodiment, the steel-framed building 1 has a small section SB having a substantially square shape in a plan view and a large section LB having a substantially rectangular shape in a plan view. The section may have only a rectangular shape in a plan view or a square shape in a plan view, and the shape, size, and arrangement of each section in a plan view can be arbitrarily set within a designable range. can. Further, the number of sections per floor does not have to be eight as in the above embodiment, and can be any number depending on the size, purpose, and the like of the steel-framed building.
Further, in the above-described embodiment, one large section LB is partitioned to form two exclusive portions P, but the number, direction, size, etc. of the partitions in the section formed in the steel-framed building are designed. It can be set as appropriate within the possible range, and the number and size of the exclusive portion, the size of the corridor, etc. can be set arbitrarily.

In the above embodiment, for each plan view formation of the first to fourth steel frame columns 4-1 to 4-4 forming the formation target section SB ₁ , the first steel frame column 4-1 is the first web 42. A shape that is symmetric with respect to the axis in the web thickness direction, a shape in which the second steel column 4-2 and the fourth steel frame column 4-2 are symmetric with respect to the axis in the web thickness direction of the second web 45, the first The steel frame column 4-3 of No. 3 had a shape symmetrical with respect to the axis of the second web 45 (and the third web 48) in the web thickness direction.
However, the shape of the steel frame column in a plan view can be any shape depending on the shape of the section to be formed and the section adjacent to the section to be formed formed by the steel frame column, the size of the plan view, and the like. However, the steel column is joined to a pair of first flanges formed in a direction orthogonal to the web width direction of the first web and the first web, and the first web joined to one side of the web surface of the first web. A second flange formed along a direction orthogonal to the web surface of the second web and a direction orthogonal to the web width direction of the second web, and if necessary, a third web and It is necessary to have a third flange.

As for the plan view shape of the steel column, for example, as in the steel column 4A shown in FIG. 9A, the second web 45 and the third web 48 have a web width of about half that of the first web 42. At the same time, it can be assumed that one end side of each of the second web 45 and the third web 48 is joined to a substantially center position in the web width direction of the first web 42, respectively.
In the case of the steel column 4A shown in FIG. 9A, the web widths of the second web 45 and the third web 48 are about half that of the first web, but the webs of the second web and the third web The width does not necessarily have to be about half that of the first web, and can be set arbitrarily.

Further, as shown in the steel frame column 4B shown in FIG. 9B, the web widths of the second web 45 and the third web 48 are different from each other, and one end side of the second web 45 and the third web 48 is located. , It can be assumed that they are joined to one of the positions closer to the first flange on the first web 42 (in this case, the position closer to the first flange 41a located on the upper side in the drawing).
In the case of the steel frame column 4B of FIG. 9B, one end side of each of the second web 45 and the third web 48 is attached to the first web 42 at a position closer to the first flange 41a located on the upper side in the drawing. Although it is joined, it may be joined to the first web 42 at a position closer to the other first flange 41b located on the lower side in the drawing. Further, in the case of FIG. 9B, the second web 45 is larger than the web width of the third web 48, but conversely, the third web may be larger than the web width of the second web, and further, the second web. And the web width of the third web may be the same as each other.

Since the steel frame columns 4A and 4B shown in FIGS. 9 (a) and 9 (b) have a mode in which the first intersection R1 and the second intersection R2 coincide with each other, the second flange is the same as in the above embodiment. The steel beam to be joined to 46 and the steel beam to be joined to the third flange 49 are joined in a state where their respective material axes are positioned on a straight line.

Alternatively, the plan view shape of the steel frame column is such that the second web 45 and the third web 48 sandwich the first web 42, as in the steel frame columns 4C and 4D shown in FIGS. 10 (a) and 10 (b). As a mode of being joined to the first web 42 in a state of being displaced from each other, the first intersection point R1 and the second intersection point R2 can be regarded as being displaced from each other without matching.
For example, as in the steel column 4C shown in FIG. 10A, the second web 45 and the third web 48 have the same web width (in this case, about half the web width of the first web 42). One end side of the second web 45 is joined to a substantially center position in the web width direction of the first web 42, and one end side of the third web 48 is a position closer to one first flange in the first web 42 (in this case, in this case). It can be assumed that they are joined to the first flange 41a (position near the first flange 41a) located on the upper side in the figure.
In the case of FIG. 10A, one end side of the third web 48 is joined to a position closer to the first flange 41a located on the upper side in the figure, but the other one located on the lower side in the figure. It may be joined at a position closer to 1 flange 41b.

Further, as in the steel frame column 4D shown in FIG. 10B, the second web 45 and the third web 48 have the same web width (in this case, about half the web width of the first web 42). One end of the third web 48 is located at a position closer to the first flange on the first web 42 (in this case, a position closer to the first flange 41a located on the upper side in the drawing). The side is joined to the position closer to the first flange (in this case, the position closer to the first flange 41b located on the lower side in the figure) on the first web 42, which is different from the position closer to the first flange on which the second web 45 is closer. Can be assumed to have been done.
In the case of FIG. 10B, the second web 45 is located at a position closer to the first flange 41a whose one end side is located on the upper side in the drawing, and the third web 48 is located on the lower side in the drawing. Although they are joined to positions closer to the first flange 41b, the first one where one end side of the second web is located closer to the first flange located on the lower side in the figure and one end side of the third web is located on the upper side in the figure. They may be joined at positions closer to the flange.

Further, as in the steel column 4E shown in FIG. 11A, the web widths of the second web 45 and the third web 48 are different from each other, and one end side of the second web 45 is one of the first web 42. One end side of the third web 48 is joined to a position closer to the first flange (in this case, a position closer to the first flange 41a located on the upper side in the drawing) at a substantially center position in the web width direction of the first web 42. Can be.
Further, as shown in the steel frame column 4F shown in FIG. 11B, the web widths of the second web 45 and the third web 48 are different from each other, and one end side of the second web 45 is one of the first web 42. One end side of the third web 48 is closer to the first web 42, and the second web 45 is closer to the position closer to the first flange (in this case, the position closer to the first flange 41b located on the lower side in the drawing). It may be joined to a position closer to the first flange (in this case, a position closer to the first flange 41a located on the upper side in the drawing) different from the one flange.

In the case of the steel columns 4E and 4F of FIGS. 11A and 11B, the second web 45 has a larger web width than the third web 48, but the third web has a larger web width than the second web. The web width may be large, and the second web and the third web may have the same web width.
Further, in the case of FIG. 11A, one end side of the second web 45 is joined to a position closer to the first flange 11a located on the upper side in the drawing, but one end side of the second web is the lower side in the drawing. It may be joined to a position closer to the first flange located at.
Further, in the case of FIG. 11B, one end side of the second web 45 is joined to a position closer to the first flange 41b located on the lower side in the drawing, but one end side of the second web is shown in the drawing. It may be joined to a position closer to the first flange located on the upper side. Alternatively, as in the steel frame column 4G shown in FIG. 11 (c), the second web 45 may be joined to a substantially center position in the web width direction of the first web 42. Further, in the case of FIG. 11B, one end side of the third web 48 is joined to a position closer to the first flange 41a located on the upper side in the drawing, but the third web 48 is the web of the first web 42. It may be joined to a substantially center position in the width direction or a position closer to the first flange located on the lower side in the drawing.

In the steel frame columns 4C to 4G as shown in FIGS. 10 to 11, the first intersection point R1 and the second intersection point R2 do not match as described above. Therefore, in the case of these steel frame columns 4C to 4G, The steel beam joined to the second flange 46 and the steel beam joined to the third flange 49 are joined in a state where their respective material axes are not positioned in a straight line. Therefore, the sections formed by the second web 45 and the second flange 46 and the sections formed by the third web 48 and the third flange 49 are different in shape and size from each other.

Regarding the steel frame columns 4A to 4G exemplified in FIGS. 9 to 11, the configurations other than the positions of the second web and the third web with respect to the first web and the size of the web width of the first to third webs are basic. The configuration is almost the same as that of the first to third webs (the functions of the first to third webs themselves are also almost the same), and the same reference numerals are given to obtain the same effects as those of the first to third webs, and detailed description thereof is omitted. do.

As described above, when the steel columns having various plan-view shapes exemplified in FIGS. 9 to 11 are used in the steel-framed building, as shown in FIG. 12, for example, a section formed in the steel-framed building 1A. The size and shape of the steel can be set relatively freely and easily within a certain range. Moreover, as in the above embodiment, even when the steel beam is joined to the steel column, the column shape is not formed, so that the interior space such as the exclusive portion of the building is wider than in the case where the column shape is present. In addition to being able to be secured, it is possible to improve the functionality and aesthetics of the interior space.
The steel-framed building 1A shown in FIG. 12 is basically the same as the above-described embodiment except for the specific configuration of the steel-framed beam described below, and thus has the same effect. The same reference numerals are given and detailed description thereof will be omitted. Since the functions of the first to third webs of each steel frame column themselves are almost the same as those of the above-described embodiment except for those described below, the same reference numerals are given and detailed description thereof will be omitted.

In the case of the steel-framed building 1A shown in FIG. 12, the steel-framed building 1A is located on one side (upper side in FIG. 12) of the beam-to-column direction Y, which is the first direction, and the girder direction X, which is the second direction. _1st to _4th sections B1 to B4, which are small sections arranged side by side, and small sections arranged side by side in the girder direction X located on the other side of the beam-to-beam direction Y (lower side in FIG. 12). It has 5th to 8th sections B ₅ to B ₈ , which are large sections sufficiently larger than the sections B ₁ to B ₄ , and the plan-view shape of the steel frame column as the middle column is different from the above-described embodiment. There is.
That is, a steel frame column (hereinafter, may be referred to as "first central column") 4H which is a central column forming the first section B ₁ and the second section B ₂ , the fifth section B ₅ and the sixth section B ₆ . As shown in FIG. 13, as shown later, the first web 42 is formed toward the web width direction along the inter-column direction Y, and the second web 45 and the third web 48 have the same web width. have. Then, one end side of the second web 45 is located at a position closer to one first flange 41a in the first web 42, and one end side of the third web 48 is located near the first flange of the first web 42, which is closer to the second web 45. Are joined to different positions near the first flange 41b.
Further, a steel frame column (hereinafter, may be referred to as “second central column”) 4I which is a central column forming the second section B ₂ and the third section B ₃ , the sixth section B ₆ and the seventh section B ₇ . Has a plan view shape symmetrical with the first middle pillar 4H with the first web 42 as the target axis.
Regarding the first middle column 4H shown in FIG. 13, a rib plate 59 for reinforcing a steel frame column, which will be described later, is provided on the first web 42.

Further, a steel frame column (hereinafter, may be referred to as “third middle column”) 4J which is a central column forming the third section B ₃ and the fourth section B ₄ , the fifth section B ₅ and the sixth section B ₆ As shown in FIG. 14, the first web 42 is formed toward the web width direction along the column direction X, and the second web 45 and the third web 58 have the same web width as each other. Then, one end side of the second web 45 is located near the first flange 41b on the first web 42, and one end side of the third web 48 is located near the first flange on the first web 42, which is closer to the second web 45. Are joined to different positions near the first flange 41a.
The steel frame pillar (hereinafter, may be referred to as “side pillar”) 4, which is the side pillar of the steel-framed building 1A shown in FIG. 12, is not provided with the third web and the third flange, and also. The side pillars 4 other than the side pillars 4J adjacent to the third middle pillar 4J in the beam-to-beam direction Y have a mode in which one end side of the second web 45 is joined to substantially the center in the web width direction of the first web 42. Further, regarding the third middle column 4J shown in FIG. 14, a rib plate 59 for reinforcing the steel frame column, which will be described later, is provided on the first web 42. Further, each first web of each side column 4 and the steel frame column 4 to be a square column has a web width direction along the girder direction X of the steel-framed building 1A, and the second web has a web width direction along the beam-to-beam direction Y. have.

Here, the total size of the first distance of one first flange 41a and the first distance of the other first flange 41b in the first middle pillar 4H and the second middle pillar 4I, and the third. The first distance (in this case, the distance between the beam joint surface 46a of the second flange 46 and the first intersection R1) and the third distance (that is, the beam joint surface 49a and the second of the third flange 49) in the middle column 4J. The total magnitude with (distance between the intersection R2) is almost the same.
However, the first distance on the side of the first flange 41a forming the first section B ₁ and the second section B ₂ in the first middle pillar 4H and the second middle pillar 4I is the second in the second middle pillar 4I. It is smaller than the third distance defined by the third web 48 and the third flange 49 forming the compartment B ₂ and the third compartment B ₃ .
As a result, the girder steel beam 3 that separates the second section B ₂ and the sixth section B ₆ has the first section B ₁ and the fifth section B ₅ , the third section B ₃ and the seventh section B ₇ , and the fourth section B. Compared to the position of the girder steel beam 3 that separates ₄ and the 8th section B ₈ , it is biased toward the small section side (in this case, the 2nd section B ₂ side. (Upper side in FIG. 12)) in the beam-to-beam direction Y. It is an aspect arranged at the above-mentioned position. Therefore, in the second section B ₂ , the length Q1-2 in the beam-to-beam direction Y is smaller than the length Q1-1 in the beam-to-beam direction Y of the other small sections, and the sixth section B ₆ is the length in the beam-to-beam direction Y. Is larger than other large plots.
In this way, by using steel columns with various plan-view shapes, it is possible to set the length of the section formed in the steel-framed building in the inter-beam direction relatively freely and easily within a certain range. Will be.

On the other hand, in the third middle column 4J, the fourth section B 4 and the second section B ₄ and the second flange 46 to which the inter-beam steel beam 2 forming the seventh section B ₇ and the eighth section B ₈ are joined are joined. The second distance (in this case, the distance between the beam joining surface 43b of the first flange 41b and the first intersection R1) on the first flange 41b side forming the eighth section B ₈ is the third section B ₃ and the first. It is larger than the second distance on the side of the first flange 41a forming the 7-section B ₇ (in this case, the distance between the beam joining surface 43a of the first flange 41a and the first intersection R1).
Further, the third middle column 4J has the third section B 3 and the third section B ₃ with respect to the third web 48 and the third flange 49 to which the inter-beam steel beam 2 forming the third section B ₃ and the fourth section B ₄ is joined. Rather than the distance between the beam joining surface of the first flange 41a forming the seventh section B ₇ and the second intersection R2, the beam joining of the first flange 41b forming the fourth section B ₄ and the eighth section B ₈ The distance between the surface 43b and the second intersection R2 is larger. However, regarding the position of the second intersection R2 of the third middle pillar 4J, the length Q2-1 in the column direction X of the third section B ₃ excludes the seventh section B ₇ and the eighth section B ₈ and others. The third web 48 and the third flange 49 are set to be arranged at positions having substantially the same size as the length of the girder direction X of the section.
Regarding the side pillar 4 adjacent to the third middle pillar 4J in the beam-to-beam direction Y, the side pillar 4 forming the seventh section B ₇ and the eighth section B ₈ is the first flange forming the seventh section B ₇ . The first distance on the first flange side forming the eighth section B ₈ is smaller than the first distance on the side.

As a result, the inter-beam steel frame beam 2 that separates the _7th section B ₇ and the 8th section B ₈ is arranged at an uneven position on the 8th section B ₈ side. The length Q2-2 of the direction X is larger than the length _Q2-1 of the column direction X of the _first to _sixth sections B1 to B6 and the length of the column direction X of the eighth section B8. Further, in the eighth section B ₈ , the length of the column direction X is smaller than the length Q2-1 of the column directions X of the first to sixth sections B ₁ to B ₆ .
In this way, by using steel columns with various plan-view shapes, it is possible to set the length of the section formed in the steel-framed building in the girder direction relatively freely and easily within a certain range. Will be. As a result, it is possible to improve the degree of freedom in designing the size and shape of each section in addition to the setting of the length in the beam-to-beam direction described above.

In the above embodiment, the first to third flanges 41a, 41b, 46, 49 have a shape in which one end side of the first to third webs 42, 45, 48 is connected to substantially the center in the flange width direction. However, for the 1st to 3rd flanges, the 1st to 3rd webs do not necessarily have to be connected to the center in the flange width direction, and the position is biased toward the end side of either one in the flange width direction. The first to third webs may be connected in the state.
Further, in the above embodiment, the first member 40 formed of H-shaped steel having a substantially H-shaped cross section, wherein the steel columns 4-1 to 4-4 form the first web 42 and the first flanges 41a and 41b. A second member 44 of a CT-shaped steel having a substantially T-shaped cross section, which is the second web 45 and the second flange 46, and in some cases, a CT-shaped CT having a substantially T-shaped cross section, which is the third web 48 and the third flange 49. It has a structure formed of a third member 47 of steel. However, channel steel may be used as the first member, and angle steel having a substantially L-shaped cross section may be used as the second member and the third member.

In the above embodiment, the first steel frame columns 4-1 and the third steel frame columns 4-3 are installed so that the web width direction of the first web 42 is along the beam-to-beam direction Y, which is the first direction. Further, the second steel frame column 4-2 and the fourth steel frame column 4-4 were installed so that the web width direction of the first web 42 was along the girder direction X, which is the second direction. However, the web width direction of the first web in the steel column may be in either the first direction or the second direction, and the positions of the second web and the third web, the length in the web width direction, etc. It can be set arbitrarily according to the above.

In the above-described embodiment, the second steel frame column 4-2 and the fourth steel frame column 4-4, which are side columns in the section to be formed SB ₁ , are not provided with the third web 48 and the third flange 49. However, for the steel column to be the side column, a third web and a third flange may be provided, and in some cases, the third web and the third flange may be provided to support the wall material to be the exterior material. You may do it.

In the above-described embodiment, the section not the corner portion 81c in the steel-framed building 1 has been described as the section to be formed SB ₁ , but the section of the corner portion 81c also has basically the same configuration as the above-described embodiment. be able to.
However, as for the steel column that forms the section of the corner portion, the steel column that becomes the prism can be different from the steel column that becomes the middle column, and for example, the steel column of the embodiment shown in FIGS. 2 and 15 can be used. The steel frame column shown in FIG. 15 has the same as the side column, and has a first web 42 to which the inter-beam steel beam 2 and the girder steel beam 3 are joined, a pair of first flanges 41a and 41b, a second web 45, and a second flange 46. Although it has, the third web and the third flange are not provided (in the case of FIG. 15, the girder steel beam 3 is joined to one of the first flanges 41a, and the inter-beam steel beam 2 is attached to the second flange 46. It is joined.). Further, one end side of the second web 45 is one of the first flange sides on the web surface of the first web 42 (in accordance with the positions of the outer peripheral surfaces of the steel-framed building and the wall materials 62 and 63 used as the exterior materials). In this case, it is joined at a position offset to the first flange 41b side located on the left side in the drawing, and the web width of the first web 42 and the second web 45 forms the size and shape of the section. , The mode is arbitrarily set according to the length of the inter-beam steel frame beam 2 and the girder steel frame beam 3 joined to the first flange 41a and the second flange 46 in the material axial direction.
The steel frame column to be a prism may be provided with a third web and a third flange, and in some cases, the third web and the third flange may be provided to support the wall material to be the exterior material. You may.

In the above embodiment, each steel column is not particularly reinforced, but is formed into various shapes such as a substantially L-shaped cross section and a substantially rectangular cross section in order to prevent local buckling and the like. Reinforcing members such as stiffeners and ribs may be provided.
For example, as shown in FIG. 16A, these are in the space sandwiched between the first web 42 and the second web 45, or in the space sandwiched between the first web 42 and the third web 48. It is possible to provide a stiffener 5 having a substantially L-shaped cross section, which is formed along the web width direction of the first to third webs 42, 45, 48 and is joined to the steel column by welding or the like. In the case of the stiffener 5 shown in FIG. 16A, the stiffener 5 is accommodated between the first flanges 41a and 41b and the second web 45 facing the first flange 41a and 41b and between the first flange 41a and 41b and the third web 48 facing the first flange 41a and 41b. It is in a state of being.
It is not necessary to provide the stiffener in all the spaces between the first flange and the second web facing the first flange, and between the first flange and the third web facing the first flange, and it is not necessary to provide the stiffener in a part of the space. It may be provided. Further, when providing the stiffener, it is important not to interfere with the wall material attached to the steel frame beam joined to the first to third flanges.

Further, as shown in FIG. 16 (b) or the above-mentioned FIGS. 13 (a) and 13 (b), at least one of the first to third webs 42, 45, 48 is formed of a steel plate or the like. A rib plate 59 extending in a direction along the height direction of the steel frame column may be provided, whereby local buckling of the web provided with the rib plate 59 may be prevented. In the case of the one shown in FIG. 16B, the rib plates are provided on both sides of the web surface of the first web 42 and both sides of the web surface of the third web 48, and are joined to the steel frame column by welding or the like. Regarding the first web 42, one rib plate 59 is provided at a position closer to the first flange 41a, and the other rib plate 59 is provided at a position closer to the other first flange 41b. With respect to the web 48, the rib plates 59 are provided at positions symmetrical with respect to the third web 48. The rib plate may be provided on only one side of each web, and the rib plate may be provided at any position as long as it can effectively prevent local buckling of the steel frame column.

In the above embodiment, the positional relationship between the steel columns 4-1 to 4-4 and the floor slab 7 is joined to the first to fourth steel columns 4-1 to 4-4 forming the formation target section SB ₁ . The first and second inter-beam steel beams 2-1 and 2-2 and the first and second girder steel beams 3-1 and 3-2 have the upper flanges 21 and 31 of the respective steel beams. All of them were arranged at almost the same height, and the floor slabs were placed on the upper surfaces of the upper flanges 21 and 31.
However, as shown in FIG. 17A, regarding the positional relationship between each steel beam and the floor slab, the inter-beam steel beam 2 which is the first steel beam is more than the girder steel beam 3 which is the second steel beam. The floor slab 7 is placed on the upper surface of the upper flange 21 of the inter-beam steel beam 2, and the lower flange 32 of the girder steel beam 3 is placed on the upper surface of the floor slab 7. May be good. At this time, the load of the floor slab 7 is supported by the inter-beam steel beam 2 which is the first steel beam from below. Alternatively, as shown in FIG. 17B, the inter-flange steel beam 2 which is the first steel beam is arranged above the girder steel beam 3 which is the second steel beam, and is above the girder steel beam 3. The floor slab 7 may be placed on the upper surface of the flange 31, and the lower flange 22 of the inter-beam steel beam 2 may be placed on the upper surface of the floor slab 7. At this time, the load of the floor slab 7 is supported by the girder steel beam 3 which is the second steel beam from below.
As described above, since the positional relationship between each steel beam and the floor slab can be appropriately selected and adopted, the degree of freedom in designing the steel-framed building can be further increased.

Although the examples of the embodiments of the present invention have been described in detail above, all of the above-described embodiments are merely examples of specific examples in carrying out the present invention, and the technical aspects of the present invention are thereby used. The scope should not be construed in a limited way.

1,1A: Steel-framed building 2: Inter-beam steel beam (first steel beam)
21: Upper flange 22: Lower flange 23: Web 2a: End 2b: End 3: Girder steel beam (second steel beam)
31: Upper flange 32: Lower flange 33: Web 3a: End 3b: Ends 4, 4A to 4H: Steel columns 4-1 to 4-4: First to fourth steel columns 40: First member 41a, 41b: First flange 42: First web 42a: Ends 42b, 42b': Web surfaces 43a, 43b: Beam joint surface 44: Second member 45: Second web 46: Second flange 46a: Beam joint surface 47: 3rd member 48: 3rd web 49: 3rd flange 49a: Beam joint surface 5: Stifuna 59: Rib plate 62: Wall material (for 1st steel beam (inter-beam steel beam))
63: Wall material (for the second steel beam (girder steel beam))
7: Floor slab 80: Building interior 81: Building outer circumference 81c: Corners h1-1, h1-2, h2-1, h2-2: First distance h3-1, h3-1, h4-1, h4-2: 2nd distance R1: 1st intersection R2: 2nd intersection X: column direction (1st direction)
Y: Direction between beams (second direction)
Z: Height direction

Claims (4)

A plurality of steel columns extending in the height direction of the building, a plurality of first steel beams extending in the horizontal first direction, and a plurality of second steel frames extending in the horizontal second direction orthogonal to the first direction. The first steel beam is bridged between the steel columns adjacent to each other in the first direction, and the second steel beam is bridged between the steel columns adjacent to the second direction. A steel structure in which one section is formed by the four steel columns, a pair of the first steel beams adjacent to each other, and a pair of the second steel beams adjacent to each other. In the building
The steel column is
A first web formed in the web width direction along the first direction or the second direction, and
Orthogonal to the web width direction of the first web, which is provided at both ends of the first web in the web width direction and to which the ends of the first steel beam or the second steel beam in the material axial direction are joined. A pair of first flanges formed in the direction of
A second web joined to one side of the web surface of the first web and formed in the direction of the web width orthogonal to the web surface of the first web.
The second steel beam or the second steel beam provided at an end of the second web opposite to the first web in the web width direction and extending in a direction different from the steel beam joined to the first flange. It has a second flange formed in a direction orthogonal to the web width direction of the second web to which the end portion of the steel beam 1 in the material axial direction is joined.
For each of the steel columns forming the one section, the intersection of the axis in the web thickness direction of the first web and the axis in the web thickness direction of the second web is set as the first intersection, and the one is described. The distance between the beam joining surface of the first flange or the second flange to which the first steel beam forming the section is joined and the first intersection is set as the first distance, and the one section is formed. The distance between the beam joining surface of the second flange or the first flange to which the second steel beam is joined and the first steel beam is not joined and the first intersection is defined as the second distance. When you do
At least one of the steel columns forming the one section is different from the other steel columns adjacent to each other in the second direction in the size of the first distance, and the first. A steel-framed building characterized in that the size of the second distance is different from that of other steel columns adjacent to each other in the direction, and one or both of them are satisfied. The steel column is oriented in the web width direction orthogonal to the web surface of the first web, which is joined to the surface of the web surface of the first web opposite to the surface to which the second web is joined. The third web is provided at the end of the third web opposite to the first web in the web width direction of the third web, and is formed in a direction orthogonal to the web surface of the third web. It has a third flange, and a section different from the section formed by the first steel beam or the second steel beam joined to the second flange is formed on the third flange. The steel-framed building according to claim 1, wherein the first steel-framed beam or the second steel-framed beam is joined. The second web and the third web are joined so as to be offset from each other with the first web in between.
2. The steel-framed building according to claim 2 . The steel frame column is the first steel frame beam to which the first steel frame beam is joined in the space between the first wall materials provided on both side surfaces in the direction along the material axis direction of the first steel frame beam. The second steel beam is joined in the space between the second wall materials provided on both side surfaces in the direction along the material axis direction of the second steel beam in which the flange or the second flange is arranged. The steel-framed building according to any one of claims 1 to 3, wherein the second flange or the first flange is arranged.

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