JP6748418B2 - Bearing wall structure - Google Patents

Description

The present invention relates to a load bearing wall structure in a building.

Conventionally, a load bearing wall structure described in Patent Document 1 below has been proposed. The load-bearing wall structure described in Patent Document 1 includes beams that are arranged in the upper and lower portions, and a frame body portion that is formed in a frame shape from columns that are arranged in the left and right portions, respectively. Reinforcing metal fittings that reinforce the assembling portions of the beam and the pillar are attached to the four corners inside the frame body.

JP, 2008-308820, A

In this type of load bearing wall structure, it may be necessary to design the distance between columns small. However, in a load bearing wall with a small distance between columns, the length of the frame body in the vertical direction becomes longer than the length in the horizontal direction, so that it becomes difficult to withstand the horizontal load. Therefore, for example, bracing is performed on the frame body portion. However, since the distance between the pillars is small in the first place, it is unavoidable to make the inclination of the brace steep, and if this happens, the function of the brace cannot be fulfilled and strength cannot be expected.

Therefore, an object of the present invention is to provide a load-bearing wall structure that can secure strength even if the distance between columns is short, regardless of the distance between columns.

Bearing wall structure of the present invention, the load bearing wall structure which braces are applied to if not provided in the frame portion, and a framework member with a frame fixing member, said framework with member comprises a post and beam Further, in order to fix the abutting portions of the columns and beams in the frame body portion, a vertical direction portion along the columns and a lateral direction portion along the beams are provided, and the frame fixing member is arranged outside the frame body portion. In order to fix the frame portion to an outer structure which is a structure to be formed, a securing member that secures a column of the outer structure to the outer structure with respect to the beam is provided, and the frame assembly member and the frame are provided. It is characterized in that it is assembled with a fixing member.

According to the load bearing wall structure of the present invention, the abutting portions of the columns and beams in the frame body portion are fixed by the frame assembly member, and the columns of the frame body portion are fixed by the fastening members of the frame fixing member. When the frame is fixed to the outer structure on the outside of the beam and the frame assembling member and the frame fixing member are assembled, a load that tilts the frame body portion acts on the frame body portion. When a withdrawal load or a load in the compressing direction acts on the frame body, these loads are distributed to the frame assembling member and the frame fixing member.

In the load bearing wall structure of the present invention, it is possible to adopt a configuration in which the frame assembly member and the frame fixing member are assembled by tightening the lateral portion toward the beam by the fastening member.

As in the above configuration, the frame assembly member and the frame fixing member are assembled by fastening the lateral portion toward the beam by the fastening member.

In the load bearing wall structure of the present invention, the frame assembly member includes a diagonal member that supports the vertical direction portion and the horizontal direction portion in an inclined manner, and the securing member is attached to the lateral direction portion of the diagonal member. A configuration may be adopted in which the lateral portion is clamped to the beam between the mounting portion and the longitudinal portion.

As in the above configuration, by providing the diagonal member that supports the vertical portion and the horizontal portion in an inclined manner, the vertical portion and the horizontal portion are firmly fixed and the strength of the frame assembly member is increased. By arranging the lashing member in a limited range between the attachment portion to the lateral portion of the diagonal member and the vertical portion, the lashing member is placed in the vicinity of the vertical portion, Therefore, by tightening the lateral portion to the beam with the securing member, the frame body portion in the direction of rotating the frame body portion so as to support one of the four corners of the frame body portion can withstand the pulling load.

In the load bearing wall structure of the present invention, it is possible to adopt a configuration in which the spacing width between the columns that are laterally spaced is less than 600 mm.

According to the load bearing wall structure of the present invention, when a load that tilts the frame body portion acts, or when a load for pulling it out to the frame body portion or when a compressive load acts, the separation width between columns is Even if it is less than 600 mm, the frame assembling member and the frame fixing member receive a load and can withstand the load.

In the load bearing wall structure of the present invention, the frame fixing member further includes a support body fixed to a column, and a bolt fixing the lateral direction portion and the support body, and the bolt includes an upper bolt and a lower bolt. A split configuration can be adopted.

If the bolts that fix the lateral portion and the support body are divided into upper bolts and lower bolts as in the above configuration, the length of each bolt becomes shorter, so the buckling load against axial force is reduced accordingly. Larger (less likely to buckle). In particular, in the lower bolt, for example, the amount of protrusion from the lower beam does not increase, so at the construction site of the load bearing wall structure, the amount of lifting of the column with respect to the lower beam does not increase, so It does not reduce the sex.

According to the load bearing wall structure of the present invention, the abutting portions of the columns and beams in the frame body portion are fixed by the frame assembly member, and the columns of the frame body portion are fixed by the fastening members of the frame fixing member. When the frame is fixed to the outer structure on the outside of the beam and the frame assembling member and the frame fixing member are assembled, a load that tilts the frame body portion acts on the frame body portion. When a withdrawal load or a load in the compressing direction is applied to the frame body part, these loads are distributed to the frame assembling member and the frame fixing member, so that the strength of the frame body part is maintained regardless of the distance between the columns. Can improve.

It is a front view for explaining a load bearing wall structure concerning one embodiment of the present invention. It is an enlarged view showing an assembly state of a pillar and a lower beam by the frame assembly member and a lower hole down metal structure. It is an enlarged view showing an assembly state of a pillar and an upper beam by the same frame assembly member and an upper hole down metal structure. The same frame|frame assembly member is represented, (a) is a side view, (b) is a front view, (c) is a top view. The support is shown, (a) is a side view, (b) is a front view, and (c) is a plan view. It is a front view for explaining a load bearing wall structure concerning another embodiment of the present invention. It is an enlarged view showing an assembly state of a pillar and an upper beam by the same frame assembly member and an upper hole down metal structure.

Hereinafter, a load bearing wall structure according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the load bearing wall structure 1 according to the present embodiment includes a frame body portion 5. The frame body portion 5 is configured in a frame shape and includes columns 2 and 2 arranged on the left and right sides, a lower beam 3 and an upper beam 4 arranged to fix the columns 2 and 2 at upper and lower ends, respectively. It The load bearing wall structure 1 further includes a frame assembly member 6 and frame fixing members 7 and 8.

The lower beam 3 is a base beam. The upper beam 4 is an upper portion of the frame body portion 5. The load bearing wall structure 1 in the present embodiment constitutes, for example, a first floor portion of a house. An auxiliary column 9 is arranged at an intermediate position between the columns 2 and 2. The columns 2, 2, the lower beam 3, and the upper beam 4 are positioned by screws (joint screws) 10.

As shown in FIGS. 1 to 4 (particularly FIG. 4 ), the frame assembly member 6 includes the abutting portions (connecting portions) of the columns 2 and 2, the lower beam 3, and the upper beam 4 in the frame body 5 which intersect at right angles. It is a metal fitting for fixing. Therefore, the frame assembly member 6 is arranged at the four inner corners of the frame body portion 5. The structure of any of the frame assembling members 6 is the same, but the frame assembling member 6 is used at the four corners depending on whether it is used upside down or horizontally. The structure of one frame assembly member 6 will be described below as a representative.

The frame assembly member 6 includes a plate-shaped vertical portion 11 along the pillar 2 and a plate-shaped lateral portion 12 along the lower beam 3, and is integrally formed in an L-shape when viewed from the front. There is. The vertical length of the vertical portion 11 is formed sufficiently longer than the horizontal length of the horizontal portion 12. The vertical portion 11 and the horizontal portion 12 are orthogonal to each other and have the same width.

As shown in FIG. 4A, the vertical direction portion 11 is formed in a vertically long rectangular shape when viewed from the side, and the notch 13 is formed by cutting out the rectangular shape in the middle of the plate surface leaving the four-sided edge portion. Has been done. A reinforcing piece 15 that is a separate member that rises from the one vertical edge portion 14A is integrally formed by welding at the lateral direction end position (lower end) of the one vertical edge portion 14A of the four side edge portions. .. The vertical portion 11 is formed with a screw hole 11a into which a screw for fixing the vertical portion 11 to the columns 2 and 2 is inserted.

As shown in FIG. 4C, the lateral portion 12 is formed in a stepped shape in a plan view. By forming the pillars 2 in a stepwise manner, even when the columns 2 and 2 are narrow (less than 600 mm), it is possible to prevent the lateral portions 12 from interfering with each other when being inverted and used in the lateral direction.

Specifically, the lateral direction portion 12 is connected to the longitudinal direction portion 11 and has a base end portion 20 having the same width as the longitudinal direction portion 11, and an intermediate portion that extends from the base end portion 20 and is narrower than the proximal end portion 20. 21 and a distal end portion 22 that extends from the intermediate portion 21 and has a narrower width than the intermediate portion 21 are integrally provided. The proximal end portion 20 and the intermediate portion 21, and the intermediate portion 21 and the distal end portion 22 are continuous by stepped sides 23 and 24 that gradually narrow the width of the lateral direction portion 12. The lateral portion 12 is formed with a screw hole 12a into which a screw for fixing the lateral portion 12 to the lower beam 3 and the upper beam 4 is inserted. In particular, the plate surface of the intermediate portion 21 is formed with an insertion hole 26 (long hole) through which an anchor bolt 25 described later is inserted.

As shown in FIG. 4B, the frame assembly member 6 further includes a plate-shaped diagonal member 27. The diagonal member 27 is provided so as to be inclined between the vertical direction portion 11 and the horizontal direction portion 12. One end side of the diagonal member 27 is welded to the upper portion of the other vertical edge portion 14B of the vertical direction portion 11, and the other end side is welded to the plate surface of the tip portion 22 in the longitudinal direction of the plate surface of the horizontal portion 12. Has been done.

The upper and lower frame fixing members 7 and 8 are for fixing the frame body 5 to the outer structure which is a structure arranged outside the frame body 5, and are also referred to as a hole-down metal structure. The hole-down hardware structure is assembled with each frame assembly member 6. Hereinafter, the lower frame fixing member 7 is referred to as a lower hole-down hardware structure 7, and the upper frame fixing member 8 is referred to as an upper hole-down hardware structure 8.

The outer structure is, for example, the foundation 28 on the lower side and the joist 29 on the upper side. The upper and lower hole-down hardware structures 7 and 8 have different structures, but are used at the four corners like the frame assembly member 6. The pair of lower hole-down hardware structures 7 having the same structure are used left and right. The pair of upper hole-down hardware structures 8 have the same structure and are used left and right.

The lower hole down metal structure 7 includes a support body 30 shown in FIG. 5, a tubular body 31, an anchor bolt 25 shown in FIG. 2, a lower nut 32 as a fastening member, and a first double-drawing bolt 33. , And an upper nut 34.

The support body 30 is fixed to the pillar 2, and has a flat plate-shaped back wall 35 and side walls formed on both sides of the back wall 35 so as to rise integrally with the back wall 35 in the vertical direction. 36, a chevron shape is formed (a U-shaped cross section). The back wall 35 is housed in the notch 13 formed in the vertical portion 11 of the frame assembly member 6 and fixed to the column 2. The back wall 35 is formed with a screw hole 35a into which a screw for fixing the back wall 35 to the columns 2 and 2 is inserted. The tubular body 31 is formed so that its maximum width is approximately equal to the distance between the side walls 36 of the support body 30, and is welded to the lower portion of the support body 30.

As shown in FIG. 2, the anchor bolt 25 has its lower end portion buried in the concrete of the foundation 28, and the tip end side is inserted into the lower beam 3 and is projected into the frame body portion 5. The anchor bolt 25 projects from the insertion hole 26 (see FIG. 4C) formed in the plate surface of the intermediate portion 21. The protruding position of the anchor bolt 25 in plan view is set to the position of the inner hole 37 of the tubular body 31. The protruding tip position of the anchor bolt 25 in the height direction does not reach the inner hole 37 of the tubular body 31.

A male screw 25a is formed on the outer peripheral surface of the protruding portion of the anchor bolt 25. The lower nut 32 is screwed into the male screw 25a. The lower nut 32 is screwed to generate a force for pulling the anchor bolt 25 upward, and is crimped to the plate surface of the intermediate portion 21 (see FIG. 2 ). That is, the frame assembly member 6 and the lower hole down hardware structure 7 are assembled by tightening the lateral portion 12 toward the lower beam 3 with the lower nut 32. As the lower nut 32, a high nut whose axial length is longer than that of a general nut is used.

In particular, the lower nut 32 is arranged on the intermediate portion 21 of the lateral portion 12 of the frame assembly member 6 via the annular eccentric washer 42, and the anchor bolt 25 inserts the insertion hole 26 and the eccentric washer 42. doing. As described above, the lower nut 32 is screwed to the anchor bolt 25 at the intermediate portion 21 of the lateral portion 12 via the eccentric washer 42, and the eccentric washer 42 is sandwiched between the intermediate portion 21 and the lower nut 32. By doing so, the column base rotation due to the inclination of the frame body portion 5 can be suppressed, and the splitting of the lower beam 3 can be delayed.

In particular, the eccentric washers 42 are provided in left and right pairs on both sides of the load bearing wall structure 1. The eccentric washer 42 includes a disk-shaped washer body 42A and a long hole 42a formed in the plate surface of the washer body 42A so as to be eccentric with respect to the center thereof. Therefore, the insertion hole 26 formed in the plate surface of the intermediate portion 21 of the frame assembly member 6 and the anchor bolt 25 inserted through the insertion hole 26 can be eccentrically arranged on a plane. Since such an elongated hole 42a is formed in the eccentric washer 42, if the washer main body 42A is rotated so as to change the longitudinal direction of the elongated hole 42a, the washer main body 42A is moved toward the base end 20 side. They can be arranged closer to each other or closer to the tip 22 side. In any case, when the eccentric washer 42 is placed on the lateral portion 12 so that the insertion hole 26 and the elongated hole 42a correspond to each other in the vertical direction, a part of the washer main body 42A has a middle portion. The diameter is formed to protrude laterally from 21.

By using such an eccentric washer 42, the following effects can be expected. That is, as shown in FIG. 4( c ), when the lateral portions 12 do not interfere with each other, a part of the washer body 42</b>A of the one eccentric washer 42 is part of the tip portion 22 of the other lateral portion 12. Can be pressed from above, and a part of the washer body 42A of the other eccentric washer 42 can press the tip portion 22 of the one lateral portion 12 from above. Then, by tightening both lower nuts 32, the lateral portions 12 can be firmly integrated via the eccentric washer 42. Each eccentric washer 42 has a larger area than a normal nut or the lower nut 32 and can disperse the tightening force of the lower nut 32. Therefore, the splitting of the wood (the lower beam 3) can be effectively suppressed or delayed.

Here, it is assumed that a horizontal force that tilts the columns 2 and 2 of the frame body portion 5 (bearing wall structure 1) is generated due to the occurrence of an earthquake or wind. The columns 2 and 2 and the column frame assembly members 6 and 6 are integrated, and the column frame assembly members 6 and 6 are integrated by the eccentric washer 42. Therefore, even if the horizontal force acts as a force in the direction of lifting one of the column frame assembly members 6, this is pressed by the other eccentric washer 42. Therefore, the horizontal force can be suppressed as the load bearing wall structure 1 having high yield strength.

The first double-drawing bolt 33 is a bolt having male threads 33a formed on the outer peripheral surfaces of both axial side portions. The first both-drawing bolt 33 is inserted into the middle hole 37 of the tubular body 31 from above, and the lower end side of the first both-drawing bolt 33 is screwed into the lower nut 32 from above. The upper end side of the first both-drawing bolt 33 projects upward from the tubular body 31, and the upper nut 34 is screwed into the projecting portion. The upper nut 34 is screwed onto the upper end side of the first double-drawing bolt 33 so as to be crimped to the top end 31a of the tubular body 31 via a washer. The upper nut 34 may be screwed onto the upper end side of the first double-drawing bolt 33 without using a washer.

The frame assembly member 6 and the lower hole down hardware structure 7 described above are applied to the connecting portions (assembling portions) between the left and right columns 2 and 2 of the frame body portion 5 and the lower beam 3.

FIG. 3 is an enlarged view of a connecting portion between the upper beam 4 and the pillar 2. A configuration in which the upper hole-down hardware structure 8 at the connecting portion between the upper beam 4 and the pillar 2 is different from the lower hole-down hardware structure 7 will be described. The upper hole-down hardware structure 8 does not have a high nut (lower nut 32). Further, while the lower hole-down hardware structure 7 uses the anchor bolt 25 and the first pulling bolt 33, the upper hole-down hardware structure 8 uses the long second bolt instead of the anchor bolt 25. A draw bolt 38 is used.

The second both-out bolts 38 are inserted through the outer structure (joist 29) and the upper beam 4 from above, and through the inner hole 37 of the tubular body 31 from above. Then, a nut 39 is screwed into a portion of the tubular body 31 that protrudes downward through the inner hole 37. The nut 39 is screwed to the lower end side of the second double-drawing bolt 38 so as to be crimped to the top end 31a of the tubular body 31 via a washer. The other components are substantially the same as the lower hold-down hardware structure 7, the description thereof will not be repeated assigned the No. same marks for the components achieving the same function. Such upper hole down hardware structures 8 are provided on the left and right of the frame body portion 5.

The seismic resistance of the bearing wall structure 1 having the above configuration will be described. First, a case will be described in which a force that tilts the frame body portion 5 acts due to the occurrence of an earthquake or wind around the lower end portion of one of the columns 2.

The lower end portion of the anchor bolt 25 is embedded in the concrete of the foundation 28 and fixed to the foundation 28. The tip end side of the anchor bolt 25 is inserted into the lower beam 3 and protrudes into the frame body portion 5. A lower nut 32 is screwed onto the male screw 25a of the screw 25 so as to generate a force for pressing the upward movement of the anchor bolt 25.

In the frame assembly member 6 and the lower hole down hardware structure 7, the lower nut 32 is assembled by tightening the lateral portion 12 toward the lower beam 3, so that the anchor bolt 25 made of metal is made of metal. It is firmly assembled to the attachment member 6 via the metal lower nut 32. Moreover, the frame assembly member 6 is integrally formed in an L-shape with a vertical portion 11 along the column 2 and a lateral portion 12 along the lower beam 3, and the vertical portion 11 is fixed to the column 2. The lateral portion 12 is fixed to the lower beam 3. Further, the diagonal member 27 is fixed so as to be inclined so as to pass over the vertical direction portion 11 and the horizontal direction portion 12, thereby improving the strength of the frame assembly member 6.

The load bearing wall structure 1 has such upper and lower assembling structures. Particularly, in the frame assembling member 6 and the lower hole down hardware structure 7, the lower nut 32 has the lateral portion 12 and the lower beam. By assembling by tightening toward the column 3, the column 2 (bearing wall structure 1) is tilted within the wall surface around the lower end of the column 2 at the connecting portion between the lower beam 3 and the column 2. The force acting in the direction can be supported by the supporting force of both the frame assembly member 6 and the lower hole down hardware structure 7, and the inclination of the column 2 can be effectively suppressed.

Since such a restraining force (proof strength) can be expected in each of the frame assembly member 6 and the lower hole down hardware structure 7 corresponding to the columns 2 and 2 on both sides, the columns 2 and 2 in the entire load bearing wall structure 1. The lateral separation width (separation width between cores of pillars) is less than 600 mm, which is smaller than the separation width between general pillars, but the inclination in the wall surface centering on any of the pillars 2 and 2 Can also be prevented.

It is conceivable that the force acting in the direction of inclining the load bearing wall structure 1 may act as a force in the direction of pulling out the load bearing wall structure 1 obliquely upward or a force in the direction of compressing it. In the load bearing wall structure 1, the frame assembly member 6 and the lower hole down hardware structure 7 are assembled by the lower nut 32 tightening the lateral portion 12 toward the lower beam 3, and the diagonal member 27 is Since it is provided so as to be slanted so as to pass to the longitudinal portion 11 and the lateral portion 12, the diagonal member 27 resists the force in the direction in which the load-bearing wall structure 1 is pulled upward or in the direction in which it is compressed. To do.

Further, the first both-drawing bolt 33 is inserted into the middle hole 37 of the tubular body 31, the lower end side of the first both-drawing bolt 33 is screwed into the lower nut 32, and the upper end side of the first both-drawing bolt 33. The upper nut 34 is screwed to the top end 31a of the tubular body 31 so as to be crimped, and the support body 30 to which the tubular body 31 is fixed is fixed to the column 2. Since the load bearing wall structure 1 further has such an assembling structure, it can withstand the pulling force.

In the load bearing wall structure 1, the lower nut 32 is located between the attachment portion (welded portion) of the diagonal member 27 to the lateral portion 12 and the longitudinal portion 11, and the lateral portion 12 is fastened to the lower beam 3. Is. That is, the lower nut 32 is arranged near the vertical portion 11. Also from this configuration, when a force that tilts the load-bearing wall structure 1 acts around the lower end portion of one of the columns 2, the frame assembly member 6 and the lower portion of the frame 2 at the joint between the other column 2 and the lower beam 3 are operated. The side hole-down hardware structure 7 effectively resists.

By the way, the anchor bolt 25 and a separate bolt that is the first both-side pulling bolt 33 arranged above the anchor bolt 25 are connected via the lower nut 32. As described above, in the load bearing wall structure 1, the bolts for assembling the lower beam 3 (the lateral direction portion 12) and the column 2 (the support body 30) are the upper bolt (first double-drawing bolt 33) and the lower bolt (anchor). It is divided into bolts 25). According to this structure, the distance between the fulcrums of bending is shorter with the anchor bolt 25 and the first double-drawing bolt 33, which are the respective bolts, as compared with the case of using one long bolt. Then, the deformation can be suppressed with respect to the bending force acting on the anchor bolt 25 and the first pulling bolt 33.

Further, if the length of the bolt used for the load bearing wall structure 1 is shortened, the buckling load is increased with respect to the axial force (the buckling is less likely to occur). Moreover, the load bearing wall structure 1 includes a frame body 5, a pair of left and right lower hole down hardware structures 7, and a pair of left and right upper hole down hardware structures 8. In the lower hole down hardware structure 7, the anchor bolt 25 and the The single pull bolt 33 and the double pull bolt 33 are fixed to the frame assembly member 6, and in the upper hole-down hardware structure 8, the second double pull bolt 38 is fixed to the frame assembly member 6. For this reason, in each of the columns 2 and 2, an environment is created in which the distance between the fulcrums, which is a reference for buckling, is short, so that the buckling load is further increased.

Since the bolts for assembling the lower beam 3 and the pillar 2 are divided, the protrusion amount of the anchor bolt 25 from the lower beam 3 does not increase. Therefore, at the construction site of the load bearing wall structure 1, since the lifting amount of the column 2 with respect to the lower beam 3 is not increased, the workability is not deteriorated.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention. In addition, the same applies to the specific configuration of each unit.

For example, in the above-described embodiment, the load bearing wall structure 1 is illustrated in which the columns 2 and 2 are separated from each other to the extent that the auxiliary columns 9 can be arranged between the columns 2 and 2. However, the bearing wall structure 1 of the present invention can be used even when the space between the columns 2 and 2 is narrow and the auxiliary column 9 cannot be constructed. In the load bearing wall structure 1 in the embodiment shown in FIGS. 6 and 7, instead of providing the auxiliary column 9, a rectangular face member 40 extending over the columns 2 and 2, the lower beam 3, and the upper beam 4 is constructed. The face member 40 is fixed to the columns 2 and 2, the lower beam 3, and the upper beam 4 with screws 41.

When the space between the columns 2 and 2 is narrow and the auxiliary column 9 cannot be constructed, the lateral direction portion 12 of the frame assembly member 6 is formed in a stepwise manner as described above, and particularly when it is used by reversing in the lateral direction. It is possible to prevent the lateral portions 12 from interfering with each other (see FIG. 4C).

In the embodiment shown in FIGS. 6 and 7, when viewed from the front, and if diagonal members 27 adjacent in the transverse direction, but has crossed apparently, this is the framework with member 6 are horizontally symmetric to use, the framework By forming the lateral portion 12 of the attaching member 6 in a stepwise manner as described above, the lateral portions 12 are in the same plane so that the stepped sides 23 and 24 face each other in the left-right direction. This is because they overlap in the front-back direction. Other configurations are similar to the embodiment shown in FIGS. 1 to 5, parts having the same function and their description is omitted to issue same marks.

In the bearing wall structure 1 in this embodiment, even if the auxiliary column 9 (or brace in some cases) is not provided, or even if the brace is provided and this does not work, the lower hole down hardware structure 7 and the upper hole down By providing the face material 40 in addition to the metal structure 8, the strength of the load bearing wall structure 1 can be improved.

In addition, when the spacing between the pillars 2 and 2 is sufficient, the frame assembly member 6 does not need to be provided with the stepped sides 23 and 24 and formed in a step-like shape, but a simple rectangular plate shape in plan view. Can be formed. In addition, although the load bearing wall structure 1 of each of the above-described embodiments is illustrated as a case corresponding to the first floor of a building, it is needless to say that it can be applied to the second floor or higher floors.

Further, in the load bearing wall structure 1 of this embodiment, the support body 30 is fixed to the column 2 by having the flat plate-shaped back wall 35 accommodated in the notch 13 of the frame assembly member 6. That is, when the support body 30 is fixed to the pillar 2, the notch 13 can be used as a guide, so that the support body 30 can be easily and accurately constructed.

Further, in the frame assembly member 6, a plate-shaped lateral direction portion 12 along the lower beam 3 is integrally formed with the column 2 via the vertical direction portion 11, and the lateral direction portion 12 is flush with the lower surface of the column 2. Is. That is, since the lateral portion 12 of the frame assembly member 6 (particularly the tip portion 22 extending from the intermediate portion 21) is added to the pillar 2 and is installed on the lower beam 3, the axial force (directing downward) Can withstand a large load).

In the above embodiment, the upper assembly structure and the lower assembly structure are different assembly structures. However, it is also possible to use a structure in which the lower assembly structure is turned upside down in the upper assembly structure.

DESCRIPTION OF SYMBOLS 1... Bearing wall structure, 2, 2... Pillar, 3... Lower beam, 4... Upper beam, 5... Frame body part, 6... Frame assembly member, 7... Lower hole down metal structure, 8... Upper hole down hardware Structure, 11... Longitudinal portion, 12... Lateral portion, 20... Proximal end portion, 21... Intermediate portion, 22... Tip portion, 23, 24... Stepped side, 25... Anchor bolt, 26... Insertion hole, 27... Diagonal member, 28... foundation, 29... joist, 30 support, 31... cylindrical body, 31a... top end, 32... lower nut, 33... first pull bolt, 34... upper nut, 38... second pull Bolts, 39... nuts

Claims (5)

In load bearing wall structure which braces are applied to if not provided in the frame portion,
A frame assembly member and a frame fixing member are provided,
The frame assembly member includes a longitudinal portion along the pillar and a lateral portion along the beam so as to fix the abutting portions of the pillar and the beam in the frame body portion including the pillar and the beam,
The frame fixing member fixes a column toward the outer structure with respect to the beam of the outer structure in order to fix the frame body to an outer structure that is a structure arranged outside the frame body. Equipped with a lashing member for tying,
A load bearing wall structure characterized in that the frame assembling member and the frame fixing member are assembled together. The load bearing wall structure according to claim 1, wherein the frame assembly member and the frame fixing member are assembled by tightening the lateral portion toward the beam by the fastening member. The frame assembly member includes a diagonal member that obliquely supports the vertical direction portion and the horizontal direction portion, and the fastening member includes a mounting portion to the lateral direction portion of the diagonal member and a vertical direction portion. The load bearing wall structure according to claim 2, wherein the lateral portion is clamped to the beam in a space. The load-bearing wall structure according to any one of claims 1 to 3, wherein a spacing width between the columns that are laterally spaced is less than 600 mm. The frame fixing member further includes a support body fixed to a pillar, and a bolt fixing the lateral direction portion and the support body,
The bolt load bearing wall structure according to any one of claims 1 to 4 is divided into an upper bolt and a lower bolt.