JPWO2016098798A1 - Building wall structure - Google Patents

Abstract

The building wall structure includes a plurality of load bearing walls (1) arranged in the wall width direction, upper and lower second beams (11) connecting the upper and lower ends of each load bearing wall (10), and a plurality of load bearings. A non-bearing load wall body (12) provided between the load wall bodies (10) and between the upper and lower second beams 11. The load bearing wall (10) is a member that bears the axial force and horizontal force in the vertical direction of the building. The beam / wall joint hardware (16) and the upper and lower second beams (11) provided in an embedded state at the upper and lower ends of the load bearing wall (10) are fastened by bolts (25). The beam / wall joint hardware (16) has a hollow portion (17) that opens in the wall surface of the load bearing wall (10) and extends in the thickness direction of the wall. A nut (27) that is screwed onto the head or bolt 25 is located.

Description

Related applications

  This application claims the priority of Japanese Patent Application No. 2014-256887 filed on Dec. 19, 2014, which is incorporated herein by reference in its entirety.

  The present invention relates to a wall structure of a building used for a boundary wall in a multi-family house having a structure in which, for example, a plurality of dwelling units are arranged in a row or a row.

  In multi-family houses, the fire resistance of the wall is required more than the outer wall. For this reason, the portion that bears the strength of the boundary wall (hereinafter referred to as “bearing load bearing wall”) also needs to be made of a concrete material such as concrete or mortar instead of a steel frame. Patent Document 1 proposes a structure in which the boundary wall is constructed of a concrete material.

International Publication No. 2014/091593

When constructing a load bearing wall made of concrete material on site, there are the following problems.
・ The work at the site increases and construction takes time. Specifically, it takes time to install the formwork and remove the support work.
・ Depending on the country or region where construction is performed, high quality may not be expected due to the use of poor formwork or poor worker skill.

  If the load bearing wall is a precast concrete precast wall, the above problems can be solved. However, if the load bearing wall is a precast wall, the cost of transporting the precast wall that is a heavy object is increased, which causes a problem that the cost increases. Moreover, even if it is a precast wall body, if it cannot join a precast wall body and a beam with sufficient workability | operativity, it will not lead to shortening of construction time.

  An object of the present invention is to provide a wall structure of a building that can be constructed at a low price with a short construction time, good workability of construction, and low cost.

  The building wall structure of the present invention includes a plurality of load bearing walls arranged in the wall width direction, upper and lower beams connecting the upper and lower ends of each load bearing wall, and the load bearing walls. A non-bearing load wall provided between the upper and lower beams, the load bearing wall is a member that bears the axial force and horizontal force in the vertical direction of the building, and the upper and lower ends of the load bearing wall The beam / wall joint hardware provided in the embedded state and the upper and lower beams are fastened by bolts, and the beam / wall joint hardware opens to the wall surface of the load bearing wall and extends in the wall thickness direction. And a nut screwed onto the head of the bolt or the bolt is located in the hollow portion.

  According to this configuration, the entire wall is not composed of a load bearing wall, but only the points necessary for imparting the load resistance are used as the load bearing wall, thereby reducing the cost of transporting the load bearing wall. it can. The material of the non-bearing load-bearing wall can be freely selected, and a fireproof or sound insulating material is used as necessary. A load bearing wall body made of concrete is provided with a beam / wall joint hardware, and the beam bearing wall body and the beam are joined to each other by fastening the beam / wall joint hardware and the beam with a bolt. As described above, since the beam / wall joint hardware is provided in a state of being embedded in the load bearing wall, it is not necessary to attach the beam / wall joint hardware. Fastening between the beam / wall joint hardware and the beam can be easily performed by putting a hand or a tool into the hollow portion of the beam / wall joint hardware and tightening the bolt head or nut. For these reasons, the load bearing wall and the beam can be joined with good workability.

  In this invention, the beam / wall joint hardware may be a cut piece of a steel pipe whose central axis is along the wall thickness direction. An increase in cost can be suppressed by using a steel pipe which is a generally distributed material.

The wall structure of the building of the present invention can be applied to the boundary wall of a multi-family house. In that case, the non-bearing load wall may be a masonry structure of a plurality of fire-resistant block-like members.
Since the non-bearing load wall body does not require a load of load bearing strength, the strength of the field wall is not affected even in the masonry construction of block-like members. By using bricks that can be procured locally as fire-resistant block-like members and masonry construction that is constructed locally, the fire-proof standard can be sufficiently satisfied and the cost can be reduced.

In this invention, it is preferable that the load bearing wall is a precast concrete precast wall, and the beam is a precast concrete precast beam.
When the load bearing wall and beam are made of precast concrete, the construction period is short and the construction period can be shortened. In addition, the formwork and concrete placement work can be reduced on site, and construction management is easy.

  Any combination of at least two configurations disclosed in the claims and / or the specification and / or the drawings is included in the invention. In particular, any combination of two or more of each claim in the claims is included in the invention.

The present invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying drawings. However, the embodiments and drawings are for illustration and description only and should not be used to define the scope of the present invention. The scope of the invention is defined by the appended claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.
BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the multistory house provided with the boundary wall to which the wall structure of the building concerning 1st Embodiment of this invention was applied. It is a front view of a community wall. It is a front view of the load bearing wall body of the same wall. It is a side view of the load bearing wall body of the same field wall. It is IIIC-IIIC sectional drawing of FIG. 3A. It is IVA-IVA sectional drawing of FIG. 3A. It is IVB-IVB sectional drawing of FIG. 3A. It is IVC-IVC sectional drawing of FIG. 3A. It is a front view of the load bearing column of the same wall. It is a side view of the load bearing column of the same wall. It is VC-VC sectional drawing of FIG. 5A. It is a fracture | rupture side view of the junction part of the strength bearing wall body and beam of a common wall. It is an exploded view of the junction part of the strength-bearing wall body and beam of a common wall. It is a front view of the field wall to which the wall structure of the building concerning a 2nd embodiment of this invention was applied.

A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a two-story multi-family house, and the wall structure of the building of the present invention is applied to a boundary wall 3 between each dwelling unit 2 in the multi-family house 1. In this multi-family house 1, the pillars 4 and the first beams 5 are mainly steel frames, and bearing walls using braces or lattice-like bars are arranged on part of the outer wall 6 and the partition wall 7. 1 has two dwelling units 2, but the present invention can also be applied to a boundary wall of a multi-dwelling house in which three or more dwelling units 2 are connected.

  As shown in FIG. 2, the boundary wall 3 includes a first-floor boundary wall portion 3 </ b> A and a second-floor boundary wall portion 3 </ b> B that are arranged in the vertical direction. Both boundary wall portions 3A and 3B have the same structure, and a plurality of load bearing walls 10 arranged in the wall width direction (left and right direction in FIG. 2), and upper and lower first connecting upper and lower ends of these load bearing walls 10. 2 beams 11 and a non-bearing load wall 12 provided between the plurality of load bearing walls 10 and between the upper and lower second beams 11. In this embodiment, a proof stress column body 13 is provided between a pair of adjacent proof load walls 10 and 10 having the widest distance between each other. This load bearing column 13 is arranged at a place where it is not necessary to bear a horizontal force but a load of an axial force in the vertical direction, such as a place where the distance between adjacent load bearing walls 10, 10 is long. Is done. Specifically, the load bearing column 13 is provided between the non-bearing load walls 12 and 12.

  The second beam 11 serving as the ceiling beam of the first floor wall 3A and the second beam 11 serving as the floor beam of the second floor wall 3B are common to each other. In both the boundary wall portions 3A and 3B, the positions of the load bearing wall 10 and the load bearing column 13 in the wall width direction are the same. Specifically, the load bearing wall 10 of the second floor wall 3B is located directly above the load bearing wall 10 of the first floor wall 3A. Further, the load bearing column 13 of the second floor wall 3B is located directly above the load bearing column 13 of the first floor wall 3A. The load bearing wall 10 is a member that bears the axial force and horizontal force in the vertical direction of the field wall portions 3A and 3B. Further, the load bearing column 13 is a member that bears only the axial force in the vertical direction of the field wall portions 3A and 3B.

  As shown in FIGS. 3A to 4C, the load bearing wall 10 is a precast wall made of precast concrete. The proof load wall 10 which is this precast wall is provided with a reinforcing bar 15. The reinforcing bars 15 include a plurality of main bars 15a extending in the vertical direction, abdominal muscles 15b surrounding the plurality of main bars 15a and arranged vertically, and fixed reinforcing bars 15c disposed at the upper and lower ends of the load bearing wall 10, respectively. It becomes.

  At the corners of the four corners at the upper and lower ends and the left and right ends of the load bearing wall 10, beams and wall joints 16 for joining the load bearing wall 10 to the upper and lower second beams 11 are provided in a state embedded in concrete. It has been. The beam / wall joint hardware 16 is formed of a square steel pipe cut to the length of the wall thickness, and the cut pieces of the square steel pipe are arranged so that the central axis thereof is along the wall thickness direction. Therefore, the beam / wall joint hardware 16 has a hollow portion 17 that opens in the wall surface of the load bearing wall 10, that is, in the wall thickness direction (left-right direction in FIG. 3C) and extends in the wall thickness direction.

  A reinforcing rib 16a is fixed to the intermediate portion in the wall thickness direction of the hollow portion 17 of the beam / wall joint hardware 16 by welding. Also, bolt insertion holes 18 for communicating the outside with the hollow portion 17 are formed at two positions across the rib 16a on the upper surface portion of the upper end beam / wall joint hardware 16 and the lower surface portion of the lower end beam / wall joint hardware 16. Is provided. In this embodiment, each load bearing wall 10 is provided with four beams / wall joints 16 at the left and right corners of the upper and lower ends, but the positions where the beam / wall joints 16 are provided are at the upper and lower ends. If it is, it does not have to be the left and right corners.

  As shown in FIGS. 5A to 5C, the load bearing column 13 is a precast column made of precast concrete. The proof load column 13 which is this precast column is provided with a reinforcing bar 20 like the proof load wall 10. The reinforcing bar 20 has a plurality of main muscles 20a extending in the vertical direction, and abdominal muscles 20b surrounding each of the plurality of main muscles 20a and arranged vertically.

  At the upper and lower ends of the load bearing column 13, beam / column joint hardware 21 for bonding the load bearing column 13 to the upper and lower second beams 11 is provided in an embedded state. Similarly to the beam / wall joint hardware 16, the beam / column joint hardware 21 is formed of a square steel pipe cut to the length of the wall thickness (column body thickness), and the cut piece of this square steel pipe has its central axis. Are arranged along the wall thickness direction (column thickness direction). Therefore, the beam / column joint hardware 21 has the hollow portion 22 that opens in the wall thickness direction (the left-right direction in FIG. 5C) and extends in the wall thickness direction of the load bearing column 13. A reinforcing rib 21a is fixed to the middle portion in the wall thickness direction of the hollow portion 22 of the beam / column joint hardware 21 by welding.

  Also, bolt insertion holes 23 for communicating the outside with the hollow portion 22 are formed at two positions across the rib 21a on the upper surface of the upper beam / column joint hardware 21 and the lower surface of the lower beam / column joint hardware 21. Is provided. By using steel pipes that are generally distributed as the beam / wall joint hardware 16 and the beam / column joint hardware 21, an increase in cost can be suppressed. However, materials other than steel pipes may be used as the beam / wall bonding hardware 16 and the beam / column bonding hardware 21.

  In FIG. 2, the second beam 11 is constituted by joining a plurality of precast concrete precast beam bodies 11A in the longitudinal direction. As shown in FIG. 6, a reinforcing bar 24 is assembled inside the second beam 11. In addition, anchor bolts 25 are provided at locations where the load bearing wall 10 and the load bearing column 13 in the second beam 11 are joined, corresponding to the positions of the bolt insertion holes 18 and 23 (FIGS. 3C and 5C). It has been. As shown in FIG. 7, both ends of the anchor bolt 25 protrude from the upper and lower surfaces of the second beam 11.

  FIG. 6 is a cutaway side view of the joint portion between the load bearing wall 10 and the second beam 11. As shown in FIG. 6, the second beam 11 is placed on the load bearing wall 10 of the first floor wall 3 </ b> A, and the load bearing wall of the second floor wall 3 </ b> B is further placed on the second beam 11. 10 are built. In this embodiment, the second beam 11 has a greater thickness in the wall thickness direction (left and right direction in FIG. 6) than the load bearing wall 10 and the load bearing pillar 13 (FIG. 2).

  As shown in FIG. 7, the anchor bolt 25 provided in the second beam 11 is inserted into the bolt insertion hole 18 of the beam / wall joint hardware 16 and protrudes into the hollow portion 17 of the beam / wall joint hardware 16. A nut 27 is fastened to 25 via a washer 26. Thus, the load bearing wall 10 and the second beam 11 are joined by fastening the load bearing wall 10 and the beam / wall joint hardware 16. Since the hollow part 17 is opened in the wall surface of the load bearing wall 10, a hand or a tool can be put into the hollow part 17 from this opening. Therefore, the mounting operation of the washer 26 and the nut 27 to the anchor bolt 25 and the tightening operation of the nut 27 can be easily performed. For this reason, the workability of joining the load bearing wall 10 and the second beam 11 is good.

  Instead of providing the anchor bolt 25 in the second beam 11, a screw hole (not shown) is provided, and a bolt (not shown) is inserted from the hollow portion 17 into the bolt insertion hole 18 of the beam / wall joint 16. The load bearing wall 10 and the beam / wall joint hardware 16 may be fastened by screwing them into the screw holes. Also in this case, a hand or a tool can be put into the hollow portion 17 to easily perform a bolt mounting operation and a bolt head tightening operation located in the hollow portion 17.

  The joint between the load bearing column 13 and the second beam 11 has the same structure as the joint between the load bearing wall 10 and the second beam 11. At the joint between the load bearing column 13 and the second beam 11, a beam / column joint 21 is used instead of the beam / wall joint 16.

  In FIG. 6, the first beams 5 of the dwelling units 2 on both sides are joined to both side surfaces of the second beam 11 of the boundary wall 3 via beam / beam joint hardware 30. The second beam 11 and the beam / beam joint 30 are fastened by an anchor bolt 31 and a nut 32 provided on the second beam 11.

  As shown in FIG. 2, the non-bearing load wall 12 is a masonry structure of a fire-resistant block-like member 33 such as a brick. The block-shaped member 33 may be fire-resistant and can be procured locally at the construction site. The non-bearing load wall 12 does not require a load of load bearing, and is not joined so as to transmit force to the load bearing wall 10, the second beam 11, and the load bearing column 13.

The advantages of the boundary wall 3 of this embodiment over the conventional one will be described below.
In the boundary wall 3 of this embodiment, since the load bearing wall 10, the second beam 11, and the load bearing column 13 made of precast concrete are used, the construction period is short and the construction period can be shortened. In addition, the formwork and concrete placement work can be reduced on site, and construction management is easy. The entire wall is not constituted by the load bearing wall 10, but only the portion necessary for giving the load resistance is the load bearing wall 10. Therefore, the cost of transporting the load bearing wall 10 can be reduced.

  As described above, by providing the beam bearing wall 16 and the beam bearing column 21 on the load bearing wall 10 and the load bearing column 13 which are concrete materials, the load bearing wall 10 and the bearing strength are provided. The burden column 13 and the second beam 11 can be easily joined using the bolt 25 and the nut 27. In particular, since the beam / wall joining hardware 16 and the beam / column joining hardware 21 have the hollow portions 17 and 22, joining work is easy. Since the beam / wall joint hardware 16 and the beam / column joint hardware 21 are embedded in the load bearing wall 10 and the load bearing pillar 13 in advance, the beam / wall joint hardware 16 and the beam / column joint hardware 21 are provided. No local installation work is required.

  A non-bearing load wall 12 other than the above-mentioned precast concrete components (10, 11, 13) is also used for the boundary wall 3, but this non-bearing load wall 12 does not require a load of load bearing. Even the masonry structure of the block-shaped member 33 does not affect the strength of the wall. For this reason, for example, bricks that can be procured locally are used as the block-shaped member 33, and the cost can be reduced by constructing such a block-shaped member 33 in masonry locally.

  Since the load bearing wall 10, the second beam 11, the non-bearing load wall 12, and the load bearing column 13 constituting the boundary wall 3 are all materials having fire resistance, the boundary wall 3 Even in countries where the building standards for fireproof time are strict (for example, 4 hours or more), the fireproof standards can be sufficiently satisfied.

  In this embodiment, the load bearing column 13 is used in addition to the load bearing wall 10 as the load bearing member. This load bearing column 13 is arranged at a place where it is not necessary to bear a horizontal force but a load of an axial force in the vertical direction, such as a place where the distance between adjacent load bearing walls 10, 10 is long. Is done. By using the load bearing column 13 in combination, it is possible to cope with the boundary walls 3 of various specifications having different dimensions in the width direction without raising the construction cost more than necessary. Depending on the dimension of the boundary wall 3 in the width direction, a structure without the load bearing pillar 13 may be used as in the second embodiment of FIG.

  Since the wall structure of the building of the present invention has the above advantages, it can be applied to the partition wall 7 and the outer wall 6 provided inside the building in addition to the boundary wall 3 and partitioning the room. Furthermore, it can be applied to buildings other than houses.

  As described above, the preferred embodiments and applications have been described with reference to the drawings. However, those skilled in the art can easily assume various changes and modifications within the obvious range by looking at the present specification. I will. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

1 ... Multiple houses (buildings)
3 ... boundary wall 10 ... load bearing wall 11 ... second beam 12 ... non-bearing load wall 13 ... load bearing column 16 ... beam / wall joint hardware 17 ... hollow part 21 ... beam / column joint hardware 22 ... hollow part 25 ... Anchor bolt 27 ... Nut 33 ... Block-shaped member

Claims (4)

A plurality of load bearing walls arranged in the wall width direction, upper and lower beams connecting the upper and lower ends of each load bearing wall, and between the plurality of load bearing walls and between the upper and lower beams. With a non-bearing load wall,
The load bearing wall is a member that bears an axial force and a horizontal force in the vertical direction of the building, and a beam / wall joint metal provided in an embedded state at the upper and lower ends of the load bearing wall, and the upper and lower beams, The beam / wall joint hardware has a hollow portion that opens in the wall surface of the load bearing wall and extends in the wall thickness direction, and the head of the bolt or the bolt is screwed into the hollow portion. The wall structure of the building where the mating nut is located.   The building wall structure according to claim 1, wherein the beam / wall joint hardware is a cut piece of a steel pipe having a central axis along a wall thickness direction.   3. The building wall structure according to claim 1 or 2, wherein the non-bearing load wall body is a masonry structure of a plurality of fire-resistant block-like members. Wall structure.   The building wall structure according to any one of claims 1 to 3, wherein the load bearing wall is a precast concrete precast wall, and the beam is a precast concrete precast beam. Building wall structure.

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