JP2008014096A - Building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a building enhancing the rigidity of a floor and the ceiling supported by beams by reinforcing a connection part between a beam and a sub-beam orthogonal to each other. <P>SOLUTION: A unit building 1 is constructed by adjacently installing a plurality of building units 10 each formed of a skeleton structure with columns 11 and beams 12, 13 joined. On ends of sub-beams 21 facing an orthogonal direction to the axes of girder beams 12 are joined to both sides of a beam framework 120 comprising two girder beams 12, 12 adjacently arranged parallel. Plates 22, 22 are arranged straddling the beam framework between the upper faces and between the lower faces of the sub-beams 21, 21, and the plates are joined to the sub-beams. The other ends of the sub-beams 21, 21 are connected to the girder beams 12, 12 disposed almost parallel with the beam framework 120. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a building constituted by a frame structure in which columns and beams are joined.

  Conventionally, when building a building with a building unit composed of steel beams and columns, a unit building is known in which a secondary beam is arranged in a direction perpendicular to the beam (see Patent Documents 1 and 2). .

  For example, Patent Literature 1 discloses a connection structure in which an end portion of a ceiling beam that is cut in the middle to form a blow-through is supported by a crossing beam.

Further, Patent Document 2 discloses a connection structure in which a horizontal member directed in the direction perpendicular to the axis of the ceiling beam is engaged with both sides of the ceiling beam via a connecting metal, and the horizontal member is supported by the ceiling beam. Has been.
JP 2006-37540 A Japanese Patent Laid-Open No. 9-96047

  However, the conventional connecting structure between the beam and the sub-beam is a structure characterized in that orthogonal members can be connected without providing a notch, and is not a structure for reinforcing the connecting portion.

  Therefore, an object of the present invention is to provide a building capable of increasing the rigidity of a floor and a ceiling supported by the beam by reinforcing a connecting portion between the orthogonal beam and the sub beam.

  In order to achieve the above object, the building of the present invention is a building composed of a frame structure in which columns and beams are joined, and at least a part of the beams is a sub-beam oriented in the direction perpendicular to the axis. One end is joined to both sides of the beam, and a connecting material is disposed across the beam between the upper surface and the lower surface of the secondary beam, and the connecting material is joined to the secondary beam. The ends are connected to beams arranged substantially parallel to the beams sandwiched between the connecting members.

  Here, the beam which joins the said sub beam to both sides may be a beam set which consists of a plurality of adjacent beams arranged in parallel.

  In addition, it is preferable that a cross-sectional secondary moment of the pair of connecting members is equal to or greater than a cross-sectional secondary moment of the sub-beam, and a cross-sectional modulus of the pair of connecting members is equal to or greater than a cross-sectional modulus of the sub-beam.

  Further, the frame structure is a building unit formed in a rectangular shape in plan view, and a plurality of building units are installed adjacent to each other so that the beams on the long side of the building unit are substantially parallel to each other. The beam beams can be connected by the sub beams.

  Moreover, it can comprise so that the sub beam arrange | positioned at the outermost peripheral side in the said sub beam may project in a hollow.

  Furthermore, one end of the sub beam may be joined to both sides of the end portion of the beam.

  Then, one end of the sub beam can be joined via an L-shaped plate in which one side surface abutted on the side surface of the sub beam and the other side surface abutted on the side surface of the beam are substantially orthogonal.

  In the present invention configured as described above, one end of the secondary beam is joined to both sides of the beam or the beam set, and the upper surface and the lower surface of the secondary beam on both sides are connected by the connecting material.

  Then, by providing the secondary beam for supporting the beam, for example, the load is dispersed without concentrating only on the beam or the beam set disposed near the center.

  For this reason, it is possible to reduce the occurrence of local deformation in which only a part of the floor or ceiling supported by the beam is increased in rigidity.

  Moreover, a connection part can be reinforced without reducing the deformation performance of a sub beam by making the cross-sectional secondary moment and section modulus of a pair of connection material which connects between sub-beams into more than a sub beam.

  Further, by connecting the beam beams of a plurality of building units adjacently installed so that the long sides face each other with a secondary beam, the rigidity of the floor supported by the beam can be increased.

  Moreover, the freedom degree of the design of a building can be expanded by setting it as the structure which supports the eaves and balcony which protrude from a frame structure with the said secondary beam.

  Furthermore, a beam whose end is projected like a beam cut in the middle of a frame structure in order to construct a stairwell or a staircase is supported by a connecting portion composed of a secondary beam and a connecting material. Deflection can be reduced.

  Further, if the beam and the secondary beam are joined by the L-shaped plate, the shearing force can be reliably transmitted at the connecting portion.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 2 is a plan view showing a schematic configuration of a unit building 1 as a building according to the present embodiment, and FIG. 1 is a cross-sectional view showing the configuration of the connecting portion 2 viewed from the direction of line AA in FIG. It is.

  First, when it demonstrates from a structure, the unit building 1 of such this Embodiment is mainly comprised from the several building units 10 and 10 installed adjacently.

  Moreover, this building unit 10 is made of steel columns 11,... Arranged at the corners, and steel girders as beams connecting the upper ends and the lower ends of the columns 11,. It is a frame structure formed in a rectangular shape in plan view by the beams 12,.

  Here, in the building units 10 and 10 of the unit building 1 shown in FIG. 2, the pillars 11 and 11 are not arranged in the left central portion of the unit building 1, and a large space is formed. Yes.

  In addition, when the building units 10 and 10 are installed adjacently so that the long-side beams 12 are substantially parallel, the beams 12 and 12 are adjacent and parallel as shown in FIG. The pair of beam beams 12 and 12 facing each other will be referred to as a beam set 120.

  For the cross beam 12 and the secondary beam 21 arranged in the direction perpendicular to the axis thereof, for example, a U-shaped groove steel can be used, and the height of the secondary beam 21 is the height of the beam 12. Set to be above.

  For example, one side surface of the L-shaped plate 24 is brought into contact with the side surface in the direction perpendicular to the axis of the girder beam 12 and joined via the joining bolts 25A and 25A, and the other side surface of the L-shaped plate 24 is joined to the side beam 21. It is brought into contact with the side surface and joined via the joining bolts 25B and 25B.

  Such an end of the sub beam 21 and the beam 12 are joined on both sides of the beam set 120. Then, flat plates 22 and 22 as connecting members are bridged between the upper and lower surfaces of the sub beams 21 and 21 joined to both sides of the beam set 120, respectively.

  The flat plate 22 is joined to the sub beams 21 and 21 on both sides of the beam set 120 via high strength bolts 23 and 23, respectively. It is preferable to adjust the distance between the high-strength bolts 23 in the axial direction of the secondary beam 21 to be as short as possible.

  The flat plates 22 and 22 are made of steel, for example, like the sub-beam 21. The thickness and width of the flat plates 22 and 22 are substantially the same as the secondary moment and section modulus with respect to the sub-beam 21 and the same axis. It is preferable to set as follows.

  As described above, if the cross-sectional secondary moment and section modulus of the pair of flat plates 22 and 22 disposed between the upper surface and the lower surface of the sub-beams 21 and 21 are larger than the cross-sectional secondary moment of the sub-beam 21, etc. The portion 2 is less likely to be deformed than the secondary beam 21 and the strength is increased.

  Further, the end joint portion 26 on the side opposite to the connecting portion 2 of the sub beam 21 is joined to the beam 12 by an L-shaped plate and a joining bolt, similarly to the end portion on the connecting portion 2 side (not shown).

  For example, a ceiling plate 3 is suspended below the girder beam 12 and the sub beam 21 thus configured, and an upper floor (not shown) or the like is constructed above.

  Next, the effect | action of the unit building 1 of this Embodiment is demonstrated.

  FIG. 3 is a diagram showing an analysis result of the unit building 1 according to the present embodiment and the conventional unit building 6 in which the connection structure by the sub beams 21 and 21 is not provided.

  Here, the unit building 1 and the conventional unit building 6 were analyzed with the same structure and applied load excluding the connecting structures such as the sub beams 21 and 21.

  Then, when looking at the deformation of the conventional unit building 6 in FIG. 3B, the maximum value of the deflection of the beam assembly 120 is 11.8 mm, whereas in the present embodiment in FIG. It can be seen that the maximum deflection of the beam assembly 120 of the building unit 1 is reduced to 9.2 mm.

  In the present embodiment, since the load is distributed to the outer side beams 12 and 12 through the sub beams 21 and 21, the deflections of the outer beams 12 and 12 are 8.3 mm and 4.2 mm, Although it is increased compared to 7.0 mm and 4.0 mm of the conventional unit building 6, it can be seen that it does not become in a state where the floor surface is greatly depressed and the floor gradient is increased as in the conventional unit building 6. .

  That is, in the unit building 1 of the present embodiment, the central beam set 120 and the sub beams 21 and 21 directed in the direction perpendicular to the axis are joined via the L-shaped plate 24 and the joining bolts 25A and 25B. Therefore, the shearing force can be transmitted between the girder beam 12 and the sub beam 21.

  Further, by arranging the flat plates 22 and 22, the sub beams 21 and 21 can be integrated, and the vertical rotation of the beam 12 at the connecting portion 2 can be suppressed.

  For this reason, even if a moment force or a shearing force is applied to the connecting portion 2, the stress is distributed to the adjacent beam beams 12 through the sub beams 21,. The rigidity of the floor and the ceiling supported by the height increases, so that a part of the floor and the ceiling can be prevented from flexing and vibrating, and the generation of heavy floor impact sound (LH) can also be suppressed.

  Further, even when the load per unit area such as a library is locally increased, the stress is distributed to the adjacent beam beams 12,... By the connecting structure of the sub beams 21 and 21 and the connecting portion 2. Can be supported.

  Further, by making the cross-sectional secondary moment and section modulus of the pair of flat plates 22 and 22 that connect the sub-beams 21 and 21 to be equal to or higher than the sub-beam 21, the connecting portion 2 can be connected without reducing the deformation performance of the sub-beam 21. The deflection at the connecting portion 2 can be reduced by reinforcement.

  Hereinafter, Example 1 of the above-described embodiment will be described. The description of the same or equivalent parts as those described in the above embodiment will be given the same reference numerals.

  FIG. 4 shows a plan view of the unit buildings 1A and 1B described in the first embodiment.

  In the unit building 1A shown in FIG. 4A, three building units 10, 10, 10 having a rectangular shape in plan view are adjacently installed such that the beam beams 12,.

  In the center of the unit building 1A, the sub beams 21, 21, 21 directed in the direction perpendicular to the axis of the beam 12 are arranged in a straight line between the beam 12 and the beam set 120 and between the beam sets 120, 120. Are lined up.

  The connecting portion 2 between the sub beam 21 and the beam set 120 is configured in the same manner as in FIG. That is, in the unit building 1 </ b> A, the approximate center of the beam set 120 spanned between the columns 11 and 11 is supported by the sub beams 21.

  For this reason, even if a continuous wide floor straddling the three building units 10, 10, 10 is formed on the beam beams 12,.

  In addition, the unit building 1B shown in FIG. 4B has two rectangular building units 10 and 10 installed in plan view adjacent to each other, and the beam assembly 120A is cut in the middle in order to make the left part of the figure blow through. It is a thing.

  Then, the end portion of the beam set 120 </ b> A projecting inside the unit building 1 </ b> B is connected to and supported by the sub beams 21 and 21 via the connecting portion 2.

  In this way, even if the beam 12 is cut in the middle of the building units 10 and 10 in order to construct the atrium and the staircase, and the end of the beam is extended, the sub beams 21 and 21 and the flat plate By supporting the connecting portion 2 including 22 and 22, the deflection of the beam assembly 120A can be reduced.

  Other configurations and functions and effects are substantially the same as those in the above-described embodiment, and thus description thereof is omitted.

  The second embodiment will be described below with reference to FIGS. The description of the same or equivalent parts as those described in the above embodiment or Example 1 will be given the same reference numerals.

  In the second embodiment, unit buildings 1C, 1D, and 1E provided with overhangs such as fences and balconies will be described.

  First, the unit building 1C will be described with reference to the plan view of FIG. 6A. The unit building 1C includes two building units 10 and 10 installed adjacent to each other so that the beam beams 12 are substantially parallel to each other. The overhanging portion 14 </ b> A is formed in a cantilever structure over the entire length of the single beam 12.

  The overhanging portion 14A forms a long wall, an apartment corridor, a carriage, a garage roof, a large entrance porch, and the like.

  One end of the sub-beams 21 and 21A facing the direction orthogonal to the axis of the beam 12 is joined to both side surfaces of the beam 12 on the fixed end side of the overhanging portion 14A to form a connecting portion 2A.

  That is, as shown in FIG. 5, for example, one side surface of the L-shaped plate 24 is brought into contact with the side surface on the side of the inner wall portion 5 in the direction orthogonal to the axis of the beam 12 and joined via the joining bolts 25A and 25A. The other side surface of the L-shaped plate 24 is brought into contact with the side surface of the secondary beam 21 and joined via the joining bolts 25B and 25B.

  Also, one end of the secondary beam 21A projecting outward from the outer wall portion 4 is also joined to the beam 12 via the L-shaped plate 24A and the joining bolts 25A and 25B. In addition, common joining bolts 25A and 25A are used for joining the L-shaped plates 24 and 24A disposed on both sides of the beam 12 and the beam 12.

  Then, flat plates 22 and 22 are bridged between the upper and lower surfaces of the sub beams 21 and 21A joined to both sides of the beam 12 respectively.

  The flat plate 22 is joined to the sub beams 21 and 21A on both sides of the beam 12 via the high strength bolts 23 and 23, respectively, but the high strength bolts 23 and 23 are the same as in the above embodiment. It is preferable to adjust the distance between them to be as short as possible.

  Further, the end joint portion 26 opposite to the connecting portion 2A of the sub beam 21 joined to the inner wall portion 5 side of the girder beam 12 is provided in the beam set 120 of the building units 10 and 10 or a part of the girder beam 12 thereof. It is done.

  Further, the end joint portion 26 of the sub-beam 21A projecting to the outer peripheral side is provided on the beam 12A of the projecting portion 14A.

  On the other hand, the unit building 1D of FIG. 6 (b) has a girder 12 arranged on the outer periphery of two building units 10 and 10 installed adjacent to each other so that the beams 12 are substantially parallel to each other. An overhang portion 14B is formed in the vicinity of the center portion with a cantilever structure.

  The sub beams 21A and 21A arranged in the overhanging portion 14B also serve as the end beam of the overhanging portion 14B, and the beam of the overhanging portion 14B arranged so as to be substantially parallel to the beam beam 12. They are joined to both ends of the beam 12B via end joints 26.

  Further, the unit building 1E of FIG. 6C is constituted by a wife side beam 13A having a length approximately half of the length of the wife side beam 13 adjacent to the building unit 10 having a general shape. The building unit 10A is installed, and the overhanging portion 14C is formed over the entire length of the beam 12 of the building unit 10A.

  The overhanging portion 14C is supported by three sub beams 21A, 21A, and 21A that are parallel to each other and are directed in the direction perpendicular to the axis of the beam 12.

  The sub beams 21A, 21A, 21A are joined to the girder beam 12 and the sub beams 21, 21, 21 on the building unit 10A side through the joint portions 2A, 2A, 2A. Furthermore, these secondary beams 21, 21, 21 are joined to the beam set 120 and the secondary beams 21, 21, 21 on the building unit 10 side via joints 2, 2, 2.

  When a load acts on the overhanging portion 14 </ b> C configured as described above, the stress is distributed to the building unit 10 through the building unit 10 </ b> A.

  In this way, by adopting a structure in which the overhanging portions 12A, 12B, and 12C are supported by the sub beams 21A,..., The shape and arrangement of the walls and balconies that protrude from the building units 10 and 10A can be arbitrarily set. Therefore, the degree of freedom in designing the unit buildings 1C, 1D, and 1E can be expanded.

  Other configurations and functions and effects are substantially the same as those of the above-described embodiment or Example 1, and thus description thereof is omitted.

  Although the best embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment or example, and the design does not depart from the gist of the present invention. Such modifications are included in the present invention.

  For example, in the above embodiment, the high-strength bolt 23 is used for joining the flat plate 22 and the sub-beam 21. However, the present invention is not limited to this, and if a desired strength can be obtained, You may join by welding etc.

  In the above embodiment, the sub beam 21 is connected in the direction orthogonal to the axis of the beam 12. However, the present invention is not limited to this, and the building units 10 and 10 are adjacently installed so that the short sides face each other. In the portion to be provided, the sub-beams 21, 21 may be connected to each other by the sub-beams 21, 21, with the sub-beams 21, 21 directed in the direction perpendicular to the axis of the wife-side beam 13.

  Furthermore, in the said embodiment and Example, although the unit building 1 comprised by adjoiningly installing several building units 10, ... was demonstrated as a building, it is not limited to this, Construction site The building may be constructed by assembling a frame structure with columns and beams.

  Moreover, in the said embodiment and Example, although the flat plate 22 was used as a connection material, it is not limited to this, The cross-sectionally U-shaped groove-shaped steel is used as a connection material, and the web is used as a secondary beam. If it bridges between the upper surfaces of 21 and 21, and between lower surfaces, the proof strength with respect to the compressive force of a connection part can be improved.

It is sectional drawing which showed the structure of the connection part of the beam of a building of the best embodiment of this invention, and a sub beam. It is the top view which showed schematic structure of the unit building of this Embodiment. It is the figure which showed the analysis result of the unit building of this Embodiment, and the conventional unit building, (a) is a deformation | transformation figure of the unit building of this Embodiment, (b) is a deformation | transformation figure of the conventional unit building. . It is the top view which showed schematic structure of the unit building demonstrated in Example 1. FIG. It is sectional drawing which showed the structure of the connection part of the beam of a unit building of Example 2, and a sub beam. It is the top view which showed schematic structure of the unit building demonstrated in Example 2. FIG.

Explanation of symbols

1,1A-1E Unit building (building)
10,10A Building unit (frame structure)
11 Column 12, 12A-12C Girder
120,120A Beam assembly (beam)
14A-14C Overhang | projection part 2,2A Connection part 21,21A Secondary beam 22 Flat plate (connection material)
23 High-strength bolt 26 End joint

Claims (7)

It is a building composed of a frame structure that joins columns and beams,
One end of the secondary beam facing in the direction perpendicular to the axis of at least a part of the beam is joined to each side of the beam, and a connecting material is disposed between the upper surface and the lower surface of the secondary beam across the beam. The connecting material is joined to the secondary beams, and the other ends of the secondary beams are connected to the beams arranged substantially parallel to the beams sandwiched between the connecting materials.   The building according to claim 1, wherein the beam that joins the sub beam to both sides is a beam set including a plurality of adjacent beams arranged in parallel.   The cross-sectional secondary moment of the pair of connecting members is equal to or greater than the cross-sectional secondary moment of the sub-beams, and the cross-sectional modulus of the pair of connecting members is equal to or greater than the cross-sectional modulus of the sub-beams. Or the building of 2.   The frame structure is a building unit formed in a rectangular shape in plan view, and a plurality of building units are installed adjacent to each other so that the beams on the long side of the building unit are substantially parallel to each other, The building according to any one of claims 1 to 3, wherein the beam beams are connected by the sub beams.   The building according to any one of claims 1 to 4, wherein the sub-beam arranged on the outermost peripheral side of the sub-beams projects in a hollow shape.   The building according to any one of claims 1 to 5, wherein one end of the sub beam is joined to both sides of the end of the beam.   One end of the secondary beam is joined via an L-shaped plate in which one side surface that is in contact with the side surface of the secondary beam and the other side surface that is in contact with the side surface of the beam are substantially orthogonal. Item 7. The building according to any one of Items 1 to 6.

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