JP4051140B2 - Beam part structure using laminated beam members with gradient - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a beam portion structure using a graded assembly beam members, particularly to beam portion structure using a graded assembly beam member having a slope surface along the slope of the oblique line limit of the height of the building.
[0002]
[Prior art and problems to be solved by the invention]
In order to limit the height of each part of the building in order to prevent deterioration of sunshine, daylighting, ventilation, etc. in the city area, oblique line restrictions are stipulated by law. Such oblique line restrictions include a road oblique line restriction, an adjacent oblique line restriction, a north oblique line restriction, and the like. For example, in consideration of various location conditions in an urban area, the slope is restricted to a 1/10 slope.
[0003]
When building a building on the land subject to the restriction of oblique lines, due to the location and layout of the building, the floor of the upper floor located at the top of the floor height and the outer wall of the building In such a case, it is necessary to cut the portion located on the outside and arrange the roof surface or outer wall surface inside the oblique line restriction. .
[0004]
For this reason, according to the conventional method, as shown in FIG. 9A, a down ceiling portion 80 is provided and the building is planned in a shape like a terraced field, or as shown in FIG. A corresponding method is adopted in which an ascending beam 82 extending obliquely linearly from the receiving beam 81 provided below the restriction S toward the floor surface 85 of the upper floor 84 which is the upper floor height of the lower floor 83 is provided. It was.
[0005]
However, according to the former method of providing the descending ceiling portion 80, the outer wall area and the roof area increase, and the triangular portion 86 formed by the oblique line restriction S becomes an unusable external space and is effectively used. I can't. In addition, according to the method of providing the latter ascending beam 82, the ascending beam 82 changes the roof load and wind pressure into a horizontal force and a vertical pulling direction force. There is a high possibility of causing breakage, gaps in walls and ceiling surfaces, deformation of joints, and the like, and it becomes necessary to perform strong reinforcement. Further, the descending ceiling portion 80 and the ascending beam 82 bite into the space of the lower floor 83 to narrow the indoor space of the lower floor 83.
[0006]
The present invention has been made paying attention to these problems, and is capable of smoothly transmitting a horizontal force load, a bending force load, a vertical force load, a shear force load, and the like of lower floors and upper floors. It is an object of the present invention to provide a beam structure using a gradient-assembled beam member that can efficiently use a space as an indoor space.
[0007]
[Means for Solving the Problems]
The present invention comprises a slope surface along the slope of the oblique line restriction of the height of the building, a receiving beam joint portion at the lower end portion sandwiching the slope surface, and a horizontal surface at the upper end portion sandwiching the slope surface, And an upper floor located at the upper end of the floor height using a gradient-assembled beam member having an inner surface extending in parallel with the horizontal plane after extending in a curved concave shape along the back side of the gradient surface from the receiving beam joint. A beam portion structure in which a virtual intersection of the floor surface of the building and the outer wall surface of the building is located outside the oblique line restriction, and the gradient surface is arranged along the gradient of the oblique line restriction, and the receiving beam Provided is a beam structure characterized in that the joint is joined to a receiving beam provided below the upper end of the floor height while avoiding the oblique line restriction, and the horizontal plane is extended along the upper end of the floor height. Thus, the above object is achieved (the invention according to claim 1).
[0009]
Further, in the beam structure of the present invention, the receiving beam is provided with a beam pedestal fitting that widens the width of the receiving beam to a width corresponding to the joint surface of the receiving beam joint, It is preferable to join the receiving beam joint portion of the gradient-attached laminated beam member to the receiving beam (the invention according to claim 2 ).
[0010]
Furthermore, in the beam portion structure of the present invention, it is preferable that a structural floor is laid on the horizontal surface of the gradient-assembled beam member (the invention according to claim 3 ).
[0011]
Furthermore, the beam part structure of this invention can join the edge part of the horizontal extension part of the said graded laminated beam member to another laminated beam member (invention of Claim 4 ).
[0012]
According to the beam portion structure using the gradient laminated beam member of the present invention, the gradient surface is arranged inside the line along the oblique line restriction, so that the receiving beam joint portion at the lower end portion of the gradient laminated beam member is provided. Is joined to the receiving beam, the horizontal surface at the upper end thereof extends along the upper end of the floor height with the curved concave inner surface facing the room.
[0013]
In addition, the end of the horizontal extension portion of the gradient-assembled beam member is connected and fixed to another receiving beam and the beam assembly arranged at the upper end of the floor, and both ends thereof are firmly supported as an integrally formed member. At the same time, the concave part of the inner surface has a shape that is a straight-out dome shape that is advantageous in terms of strength, so that vertical and horizontal loads can be connected to it. Can be smoothly transmitted to the receiving beam and other assembled beams.
[0014]
Furthermore, at the corner of the indoor space on the lower floor, the sloped laminated beam member is attached with the curved concave portion of the inner surface facing the room, so that the space at the corner can be secured widely. In addition to being able to effectively use the indoor space, the upper end of the sloped beam member is a horizontal plane up to the vicinity of the oblique line limit, so that the upper part of this can be effectively used as the indoor space on the upper floor. it can.
[0015]
And if the beam receiving base metal fitting which expands the width of the said receiving beam is provided in the receiving beam which joins the receiving beam joint part of a gradient-added girder beam member, the area which receives a load will be expanded, and a gradient-added beam It is possible to effectively prevent the receiving beam from sinking in due to the load from the member, and the load applied via the receiving beam joint is efficiently transmitted to the receiving beam, resulting in a more stable beam portion. A structure can be obtained.
[0016]
In addition, a structural floor can be extended on the horizontal surface at the upper end of the gradient-assembled beam member, and this structural floor can exhibit considerable rigidity together with the beam member to obtain a building with a more stable structure. it can.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below in detail with reference to the drawings. According to the gradient assembled beam member 11 according to the beam portion structure of the present embodiment, as shown in FIG. 1, the beam member structure 21 is used as a beam member constituting a portion of the beam portion structure 21 subject to the restriction of the oblique line restriction S of the building 20. It is what
[0018]
That is, according to this embodiment, the virtual intersection T between the floor surface 23 of the upper floor 22 located at the upper end of the floor height and the outer wall surface 71 of the building 70 is outside the oblique line restriction S (two-dot chain line). Therefore, for the purpose of clearing the oblique line restriction S while securing the floor height of the lower floor 24, the receiving beam 25 provided below the oblique line restriction S and the upper end of the floor height are extended. It is provided so as to be interposed between other beam members 16 made of laminated beams or the like.
[0019]
As shown in FIG. 2, the gradient assembled beam member 11 of this embodiment includes a gradient surface 10 along the gradient of the oblique line restriction S, and a receiving beam at the lower end portion sandwiching the gradient surface 10. In addition to the joint portion 12, the upper end portion sandwiching the gradient surface 10 is provided with a horizontal surface 13, and the inner side surface 14 facing the indoor space of the lower floor 24 is further from the receiving beam joint portion 12 to the back side of the gradient surface 10. And a horizontal extension 26 extending in parallel with the horizontal plane 13 continuously with the bending portion 20.
[0020]
The gradient laminated beam member 11 is an integrally formed member formed by laminating and laminating lumber (lamina) in the length, width, and thickness directions with the fiber directions parallel to each other, and has the strength of a large structure. It is a large cross-section laminated material for structure that can also be used as a member. Further, according to this embodiment, the gradient-attached laminated beam member 11 has a thickness of, for example, about 120 mm, and the formation (height) of the gradient portion is, for example, about 270 to 360 mm. The size is about 270 mm. Furthermore, the radius of curvature of the curved portion is, for example, about 1350 mm.
[0021]
According to this embodiment, the gradient-assembled beam member 11 has the receiving beam joint portion 12 joined to the receiving beam 25 via the beam receiving washer 17. That is, as shown in FIG. 3 which is an exploded perspective view of a portion A in FIG. 2, the receiving beam joint portion 12 is formed by projecting a tenon 28 at the center portion of the joint surface 27 parallel to the horizontal surface 13. The tenon 28 is inserted and fitted into a tenon hole 19 formed in the upper surface of the joint of the receiving beam 25, and the upper surface of the receiving beam 25 and the beam receiving base bracket 17 attached so as to widen the width of the upper surface. Placed on. In addition, on both side surfaces of the assembled beam member 11 that are close to the receiving beam joint portion 12, a donated object 39 is attached so as to project and extend the screw rod portion 40 downward, and the screw rod portion 40. The joint surface 27 can be placed in close contact with the receiving beam 25 and the beam receiving base metal fitting 17 by being screwed into the slewing washer 41 opened at the upper end of the receiving beam 25.
[0022]
The beam receiving washer 17 includes an inner metal piece 30 having an inverted L-shaped cross section, an outer metal piece 31 having an inverted L-shaped cross section, and a burring screw 32 for fixing the metal objects 30 and 31 with the receiving beam 25 interposed therebetween. In the state where the upper surface of the horizontal piece of each hardware 30, 31 is on the upper side and the back surface of the vertical piece is in close contact with the receiving beam 25, the insertion holes 32, 33 and the receiving beam 25 of each hardware 30, 31 If the burring screw 32 inserted through the provided through hole 34 is tightened, each of the hardware 30 and 31 receives the receiving beam in a state in which the height of the top end surface thereof matches the height of the top end surface of the receiving beam 25. It will be firmly fixed to 25. The burring screw 32 is screwed and fixed at a position where, for example, a central portion of a vertical piece of the inner metal piece 30 is extruded by pressing or the like to form a protrusion, and a female screw (nut) process is applied to the protrusion. Instead of the burring screw 32, the beam receiving washer 17 may be fixed with ordinary bolts and nuts. Each of the hardware 30 and 31 is reinforced by a pair of slanted rods 35 that connect and support each piece having an L-shaped cross section, and is prevented from being deformed. Each of the rising pieces 36 protrudes upward, so that the sloped assembled beam member 11 can be easily guided to the joint portion of the receiving beam 25 and can be prevented from slipping.
[0023]
Further, the other end of the gradient-assembled beam member 11, that is, the tip end portion 37 of the horizontal extension portion, is connected to another beam member 16 extending along the upper end of the floor height using various known beam joints 38. Bonded and integrated (see FIG. 1).
[0024]
The sloped laminated beam member 11 is further joined and installed with a floor beam 42, an end panel receiver 43, a main beam 45 supporting a rafter 44, a horizontal joint 47, and the like (see FIG. 2).
[0025]
FIG. 4 shows a joint structure of the floor beams 42 in the portion B of FIG. 2. This floor beam 42 has a rectangular beam receiver 48 installed as a joint on the upper end side surface of the sloped laminated beam member 11. In addition to being joined to the assembled beam member 11, the square beam receiver 48 is tightly fixed to the square beam receiving object 48 by a wing plate bolt 49.
[0026]
FIG. 5 shows a joining structure of the end panel receiver 43 in the portion C of FIG. 2, and this end panel receiver 43 is a large insertion formed on the side surface of the upper end corner of the sloped beam assembly 11. A plurality of nails 51 are driven and bonded and fixed in a state where the front end of the joint 50 is locked. In addition, the horizontal joint 47 connected to the side surface of the sloped laminated beam member 11 and the rafter 44 connected to the upper surface are also fixed by joining a plurality of nails 51 to the tip portion thereof.
[0027]
Further, FIG. 6 shows a joint portion of the main beam 45 in the portion D of FIG. 2. The main beam 45 is provided with a bundle column 53 standing on the upper surface of the gradient-assembled beam member 11 via a delta plate or the like. In addition to fixing, the main beam 45 is installed on the bundle pillar 53 via a triangular plate or the like. The main beam 45 is provided with a rafter notch 56 for obliquely extending and supporting the rafter 44 along the oblique line restriction S, and the rafter 44 is interposed via a hurricane tie 52 (see FIG. 2). Then, it is joined to the main beam 45. In addition, a field board or the like as an exterior material is attached along the rafter 44 or the gradient surface 10 of the laminated beam member 11, and further exterior finish is applied, but this is finished as an outer wall or a roof surface.
[0028]
According to the present embodiment, the gradient-assembled beam member 11 constituting the beam portion structure 21 includes the gradient surface 10 along the gradient of the oblique line restriction S on the outer side, and the gradient surface 10 on the inner side surface 14 thereof. Since the curved portion 20 extending in a curved concave shape is provided along the back side, the receiving beam 25 and other beam members that connect the vertical load and the horizontal load with the curved shape that is strong in strength. 16 can be transmitted smoothly.
[0029]
In addition, since the sloped laminated beam member 11 is attached with the curved portion 20 facing the room at the corner of the indoor space of the lower floor 24, the space at the corner is secured widely, For example, as shown in FIG. 7, the water-surrounding unit 57 such as a bathroom unit or a toilet unit can be disposed and accommodated in a state where it does not hit the curved portion 20.
[0030]
Further, as shown in FIGS. 1 to 3, the joint surface 27 of the gradient-assembled beam member 11 is interposed via a beam pedestal bracket 17 attached so as to widen the upper surface of the receiving beam 25 at the joint portion. Thus, the substantially entire surface is in close contact with the receiving beam 25 while being supported from below, the area receiving the load is enlarged, and the receiving beam 25 is indented by the load from the graded beam assembly 11. Can be effectively prevented, and the load can be efficiently transmitted to the receiving beam 25 to obtain a more stable beam structure 21.
[0031]
And according to the beam part structure 21 of this embodiment, as shown in FIG.1 and FIG.8 (a), the structural floor 58 currently laid on the other beam member 16 is made into the graded laminated beam member 11 of FIG. While being supported by the horizontal surface 13, the floor beam 42, the end panel receiver 43, etc., the laying is extended to the vicinity of the slope surface 10 so as to cover the sloped laminated beam member 11.
[0032]
Since the structural floor 58 having strength is laid over the entire floor surface at the upper end of the floor height in this way, the structural floor 58 exhibits considerable rigidity together with the beam members 11 and 16, and a more stable structure. It becomes possible to obtain the building 70 of.
[0033]
The gradient-assembled beam member 11 and the beam part structure 21 having the above-described configuration are not only subjected to the oblique line restriction S in only one direction of the building 70, but also as shown in FIGS. 8 (a) and 8 (b). It can also be applied to the case where the oblique line is restricted in two directions. In this case, in one direction, the tip portion 37 of the horizontally extending portion of the short-graded laminated beam member 11 ′ is connected to the graded laminated beam member 11 or the other beam member 16 perpendicular to the beam from the side thereof. The beam portion structure 21 can be formed by joining via a metal receiving member.
[0034]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, it is not always necessary to provide a beam pedestal bracket that widens the width of the receiving beam, and it can be brought into contact with not only the upper surface of the receiving beam but also the side surface from the inner side at the receiving beam joint at the lower end of the graded beam assembly Such a rectangular notch is provided, and the notch is closely attached to the upper surface and the side surface of the receiving beam. Moreover, in the said embodiment, although the beam pedestal metal fixture was comprised by two members, an inner metal fitting and an outer metal fitting, you may use only one metal fitting, and as these beam metal pedestal metal fittings which these metal fittings connected and integrated. It can also be used.
[0035]
【The invention's effect】
As described above in detail, according to the beam portion structure using the gradient laminated beam member of the present invention, the virtual intersection of the floor surface of the upper floor located at the upper end of the floor height and the outer wall surface of the building In the part located outside the oblique line restriction, while being able to avoid the restriction due to the oblique line restriction, it can smoothly transmit the horizontal force load, bending force load, vertical force load, shear force load, etc. The space on the floor can be used efficiently as an indoor space.
[Brief description of the drawings]
FIG. 1 is a side view for explaining a gradient-assembled beam member and a beam portion structure according to an embodiment of the present invention.
FIG. 2 is an enlarged side view for explaining a gradient-assembled beam member and a beam portion structure according to an embodiment of the present invention.
FIG. 3 is an enlarged exploded view of a part A in FIG. 2 for explaining a joint structure of a gradient-attached laminated beam member to the receiving beam to the receiving beam.
4 is an enlarged exploded view of part B in FIG. 2 for explaining a joint structure of a floor beam to a sloped laminated beam member. FIG.
5 is an enlarged exploded view of a portion C in FIG. 2 for explaining a joining structure of an end panel support to a graded laminated beam member. FIG.
6 is an enlarged exploded view of a part D in FIG. 2 for explaining a joining structure of a main beam to a graded laminated beam member. FIG.
FIG. 7 is an explanatory diagram showing a situation in which the water-surrounding unit is disposed and accommodated in a state where it does not hit the curved portion.
FIGS. 8A and 8B illustrate a situation in which the present invention is applied to a portion subject to oblique line restriction from two directions, FIG. 8A is a plan view in a state where a structural floor is laid, and FIG. 8B is a state in which a structural floor is not laid. FIG.
FIGS. 9A and 9B are side views showing the structure of a conventional portion subject to oblique line restriction. FIGS.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Gradient surface 11 Gradient laminated beam member 12 Receiving beam joint part 13 Horizontal surface 14 Inner side surface 16 Other beam member 17 Beam receiving washer 20 Curved part 21 Beam part structure 24 Lower floor 25 Receiving beam 26 Horizontal extension part 30 Inner metal part 31 Outer hardware 37 Tip 57 Water-surrounding unit 58 Structure floor 70 Building S Diagonal restriction

Claims (5)

A sloped surface along the slope of the oblique line restriction of the height of the building, a receiving beam joint at the lower end portion sandwiching the sloped surface, and a horizontal surface at the upper end portion sandwiching the sloped surface, and the receiving beam A floor surface of an upper floor located at the upper end of the floor , using a gradient-assembled beam member having an inner surface extending in parallel with the horizontal plane after extending in a curved concave shape along the back side of the slope surface from the joint portion ; The beam portion structure of the portion where the virtual intersection with the outer wall surface of the building is located outside the oblique line restriction , the gradient surface is arranged along the oblique line restriction gradient, and the receiving beam joint is A beam part structure characterized in that it is joined to a receiving beam provided below a floor height upper end while avoiding the oblique line restriction, and the horizontal plane is extended along the floor height upper end.   The receiving beam is provided with a beam pedestal mounting bracket that expands the width of the receiving beam to a width corresponding to the joint surface of the receiving beam joint, and the gradient beam assembly beam member is received via the beam pedestal mounting bracket. The beam part structure according to claim 1, wherein a beam joint part is joined to the receiving beam.   The beam part structure according to claim 1 or 2, wherein a structural floor is laid on a horizontal plane of the sloped beam assembly member.   The beam part structure in any one of Claims 1-3 with which the edge part of the horizontal extension part of the said gradient-attached laminated beam member is joined to the other laminated beam member.   The beam part structure according to any one of claims 1 to 4, wherein the beam part structure is applied when oblique lines are restricted in two directions where the building intersects.

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