JP2009197553A - Bearing wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bearing wall which has a simple structure, but can arrange the shaft centers of brace members intersecting each other, in one plane so as not to be eccentric, and can ensure excellent rigidity and proof stress. <P>SOLUTION: The bearing wall incorporates the brace members 3, 4 in an X shape in a square framework 2 so as to intersect each other. One brace member 3 among the brace members 3, 4 incorporated in an X shape is provided with a frame split turnbuckle barrel 25 at a portion intersecting the other brace member 4. The other brace member 4 is inserted through the frame inside 25c of the turnbuckle barrel 25, so that the shaft centers of the brace members 3, 4 are arranged in one plane. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a load-bearing wall that is provided in a building such as a house and bears a load resistance against a horizontal load applied to the building.

  2. Description of the Related Art Conventionally, as a load-bearing wall of a building such as a house, one having a structure in which two brace members are incorporated in an X shape along a diagonal line within a rectangular frame-shaped frame is widely known ( For example, see Patent Documents 1 to 4).

  With this type of load-bearing wall, the frame and brace material resist the horizontal load applied to the building, and even if a large horizontal load is applied to the building due to the occurrence of a large earthquake, the brace material is stretched and plasticized. It absorbs by deforming and suppresses damage to the shaft assembly and surrounding structural materials.

JP 2004-324133 A JP 2001-317123 A JP 10-31415 A JP-A-8-68138

  However, in the conventional load-bearing wall, the two brace members are crossed so as to overlap each other in the inner and outer directions (thickness direction) of the shaft assembly, and the axes of these brace members are in an eccentric state. . For this reason, the shaft centers of these brace materials cannot be aligned with the center of the shaft assembly in the thickness direction (center of the shaft assembly). For example, excessive force such as the above is easily applied, which causes a decrease in the rigidity and strength of the bearing wall.

  Therefore, in recent years, there has been proposed a structure in which a dedicated member for arranging on the same plane without decentering the axes of the brace materials that intersect with each other is provided at the intersection of the brace materials. However, when the dedicated member is used in this way, there is a problem that the structure becomes complicated and the manufacturing cost increases.

  The present invention eliminates the above-mentioned problems and can arrange the brace materials intersecting each other on the same plane without decentering, while ensuring a good rigidity and proof stress, while having a simple structure. The purpose is to provide a bearing wall.

  In order to solve the above-mentioned problem, the bearing wall of the present invention is constructed by incorporating brace members 3 and 4 into an X shape so as to intersect each other in the frame of the rectangular frame-shaped shaft set 2. A split frame type turnbuckle body 25 is provided at one of the brace materials 3 of the brace materials 3 and 4 to be assembled in a letter shape at the intersection with the other brace material 4, and the inside of the frame of the split frame type turnbuckle body 25. The axis of the one and the other brace members 3 and 4 is arranged on the same plane by inserting the other brace member 4 into 25c.

  Specifically, the one and the other brace members 3 and 4 are provided with split frame type turnbuckle cylinders 24 and 32 for tension adjustment, and as the split frame type turnbuckle cylinder 25 through which the other brace material 4 is inserted, The same one as the split-frame type turnbuckle cylinders 24 and 32 for tension adjustment is used.

  Further, screw portions 20a, 22a, 30a, 31a are formed at both ends along the length direction of the one and the other brace members 3, 4, and the screw portions 20a, 22a, A plurality of fixing members 12... For fixing 30 a and 31 a are provided, and these fixing members 12... Are screw holes arranged so as to be substantially orthogonal to the screw portions 20 a, 22 a, 30 a and 31 a. A fastening plate 41 with 41a is provided, and the screw portions 20a, 22a, 30a, 31a are screwed into the screw holes 41a of the fastening plates 41, respectively, and screwed into the screw portions 20a, 22a, 30a, 31a. The screw portions 20a, 22a, 30a, 31a are fixed to the fixing members 12, respectively, by pressing the combined nuts 43, respectively, against the fastening plates 41, ... There.

  Furthermore, screw portions 20a, 22a, 30a, 31a are formed at both ends along the length direction of the one and the other brace members 3, 4, and the screw portions 20a, 22a are formed on the shaft assembly 2. , 30a, 31a are respectively provided with a plurality of fixing members 12, which are penetrated so as to be substantially orthogonal to the screw portions 20a, 22a, 30a, 31a. A fastening plate 51 with holes 51a is provided, and the screw portions 20a, 22a, 30a, 31a are respectively inserted into the through holes 51a of the fastening plates 51, and the screw portions 20a, 22a, 30a, 31a are inserted. The fastening plates 51 are sandwiched by a pair of nuts 52, 52 that are screwed together, so that the screw portions 20a, 22a, 30a, 31a are fixed to the fixing member 12. They are respectively fixed to -.

  In the bearing wall of the present invention, the other brace material is inserted into the frame of the split-frame type turnbuckle body provided on one brace material, so that the axes of the one and other brace materials are arranged on the same plane. Therefore, the center of the brace material can be aligned with the center of the shaft assembly in the thickness direction (center of the shaft assembly). It is difficult to apply an excessive force such as twisting or bending to the fastening plate, and it is possible to ensure good rigidity and proof strength. And it is the simple structure which used the split frame type | mold turnbuckle cylinder which has prevailed widely for axial center position alignment, Comprising: Manufacturing cost can be held down.

  Furthermore, by inserting the other brace material into the frame of the split frame type turnbuckle body provided on one brace material, it is possible to install the shaft assembly without providing an intermediate beam or the like through which the brace material is inserted. The buckling of the brace material in the thickness direction can be prevented, and damage to the outer wall material and the interior material can be prevented.

  Also, as the split frame type turnbuckle cylinder for axial center alignment, the same member as the split frame type turnbuckle cylinder for tension adjustment provided in one and the other brace material is used, so that the members can be shared And manufacturing can be further simplified.

  Furthermore, the screw portions along the length direction of one and the other brace material can be attached to and detached from a fastening plate with screw holes or a fastening plate with through holes arranged so as to be substantially orthogonal to the screw portions. Even if the brace material is stretched and plastically deformed, the shaft assembly including the fastening plate can be used continuously without plastic deformation, so only one side of the bearing wall was opened and plastically deformed. By simply replacing the brace material, it can be easily restored to its original state.

(First embodiment)
The load-bearing wall according to the first embodiment of the present invention is applied to, for example, a house with a steel frame structure, and is configured by attaching an outer wall material and an interior material (not shown) to the load-bearing wall frame 1. Yes.

  As shown in FIG. 1, the load-bearing wall frame 1 is assembled in an X shape in a frame of a rectangular frame-shaped shaft set 2 so that two brace members 3 and 4 cross each other along the diagonal line. It is a thing.

  The shaft set 2 includes a pair of left and right shaft columns 10 and 10 and a pair of upper and lower shaft bars 11 and 11 that connect between the upper end portions and the lower end portions of the shaft columns 10 and 10. The shaft columns 10 and 10 and the shaft rails 11 and 11 are made of, for example, C-shaped steel, and are arranged so that the opening portions face inward. The shaft set 2 is connected to a shaft set of adjacent bearing walls or non-bearing walls by bolts or the like.

  One brace material 3 among the brace materials 3 and 4 incorporated in the X shape is composed of three first to third round steels 20, 21, 22, and a first round steel 20, as shown in FIG. 1. A split-frame type turnbuckle cylinder 24 for tension adjustment that connects the second round steel 21 and a split-frame type turnbuckle cylinder 25 for axial alignment that connects the second round steel 21 and the third round steel 22. It consists of and.

  Screw portions 20a, 21a, 22a,... Are formed at both ends of the first to third round steels 20, 21, 22, respectively. As shown in FIG. 2, the split-frame type turnbuckle cylinder 24 for tension adjustment is a standard product standardized by JIS A 5541, and screw holes 24a and 24a are formed through both ends thereof. The two end portions are connected by connecting bars 24b and 24b that are parallel to each other. The spirals of the screw holes 24a and 24a at both ends are opposite to each other. As shown in FIG. 2, the split-frame type turnbuckle cylinder 25 for axial center alignment uses a standard product standardized in JIS A 5541 like the split-frame type turnbuckle cylinder 24 for tension adjustment. Screw holes 25a and 25a are formed through the respective portions, and both end portions are connected by connecting bars 25b and 25b that are parallel to each other. The split frame type turnbuckle cylinder 25 for axial center alignment is arranged corresponding to the center of one brace material 3 in the longitudinal direction, that is, corresponding to the intersection with the other brace material 3.

  Then, the screw portion 20a on the other end side of the first round steel 20 and the screw portion 21a on the one end portion side of the second round steel 21 are inserted into the screw holes 24a and 24a of the split frame type turnbuckle barrel 24 for tension adjustment. The screw portion 21a on the other end side of the second round steel 21 and the screw portion 22a on the one end side of the third round steel 22 are respectively screwed, and the screw hole of the split frame type turnbuckle body 25 for axial center alignment. Each of the first to third round steels 20, 21, 22, a split frame type turnbuckle cylinder 24 for tension adjustment, and a split frame type turnbuckle cylinder 25 for axial alignment are respectively screwed into 25a and 25a. Are arranged on the same straight line. That is, the axis of one brace material 3 is in a straight line.

  As shown in FIG. 1, the other brace material 4 includes two fourth and fifth round steels 30 and 31, and a tension adjusting split for connecting the fourth round steel 30 and the fifth round steel 31. The frame type turnbuckle body 32 is comprised.

  Screw parts 30a and 31a are formed at both ends of the fourth and fifth round steel bars 30 and 31, respectively. As shown in FIG. 2, the tension adjustment split frame type turnbuckle cylinder 32 is a standard product conforming to JIS A 5541, similar to the tension adjustment type split buckle cylinder 24 for tension adjustment in one brace material 3. In addition, screw holes 32a and 32a are formed through both ends thereof, and the both end portions are connected by parallel connection bars 32b and 32b.

  The screw part 30a on the other end side of the fourth round steel 30 and the screw part 31a on the one end part side of the fifth round steel 31 are inserted into the screw holes 32a and 32a of the split frame type turnbuckle barrel 32 for tension adjustment. The central axes of the fourth and fifth round bars 30 and 31 and the split-frame type turnbuckle cylinder 32 for tension adjustment are arranged on the same straight line. That is, the axis of the other brace material 4 is in a straight line.

  In crossing the one brace material 3 and the other brace material 4, as shown in FIG. 3, an inner frame 25 c of the split frame type turnbuckle body 25 for axial alignment of one brace material 3 is provided. The fifth round steel 31 of the other brace material 4 is inserted, so that the axes of the one and other brace materials 3 and 4 are arranged on the same plane without decentering. As described above, the widely used JIS-standard split-frame type turnbuckle cylinder 25 is used for axial alignment, and the axes of one and the other brace members 3 and 4 are arranged on the same plane. Therefore, compared with the case where a dedicated member is used, the number of member types is reduced to reduce the manufacturing cost.

  Then, fixing members 12... For fixing both end portions along the length direction of the brace materials 3 and 4 are provided at the four corners inside the frame of the shaft assembly 2. The one brace material 3 has an end portion on one end portion of the first round steel 20 and a screw portion 22a on the other end portion of the third round steel 22 on the other end portion. Therefore, both ends of one brace material 3 are screw portions 20a and 22a. Moreover, the screw part 30a of the one end part side of the 4th round steel 30 is located in the one end part of the other brace material 4, and the screw part 31a of the other end part side of the 5th round steel 31 is located in the other end part. Therefore, both ends of the other brace material 4 are screw portions 30a and 31a.

  As shown in FIG. 4, the fixing member 12 is welded across a pair of parallel vertical plates 40, 40 welded to the shaft column 10, and the brace members 3, 4. The fastening plate 41 includes a screw hole 41a disposed so as to be substantially orthogonal to the screw portions 20a, 22a, 30a, and 31a. 4 shows the fixing member 12 that fixes the screw portion 20a of one brace material 3 as an example, but the screw portion 22a of one brace material 3 and the screw portions 30a and 31a of the other brace material 3 are shown. The fixing member 12..

  When the bracing members 3 and 4 are fixed to the fixing members 12..., As shown in FIGS. 5 and 6, the screw holes 41 a of the fastening plates 41. 3 and 4 screw portions 20a, 22a, 30a, 31a are screwed in, and the nuts 43 for loosening that are screwed into the screw portions 20a, 22a, 30a, 31a are connected to the front surface side or the back surface of the fastening plate 41. Each side is pressed against. Thereby, even if the length (length in the thickness direction) of the inner and outer directions of the shaft assembly 2 is short, the brace members 3 and 4 can be fixed to the fixing members 12. 5 and 6 show the fixing structure of the screw portion 20a of one brace material 3 as an example. However, the screw portion 22a of one brace material 3 and the screw portions 30a and 31a of the other brace material 3 are shown. Are also fixed to the fixing members 12.

  In the state where the brace members 3 and 4 are attached to the shaft set 2 in this way, the shaft centers of the brace materials 3 and 4 are arranged in the center of the shaft set 2 in the inner and outer direction (thickness direction), that is, the center of the shaft set 2. . In addition, by inserting a jig into the frame 24c, 32c of the split frame type turnbuckle cylinders 24, 32 for tension adjustment in the brace materials 3, 4, and rotating these split frame type turnbuckle cylinders 24, 32, In one brace material 3, the first round steel 20 and the second round steel 21 are attracted to each other, and in the other brace material 4, the fourth round steel 30 and the fifth round steel 31 are attracted to each other. The tension of the materials 3 and 4 is adjusted.

  In the load bearing wall having the above configuration, when the frame 2 and the brace members 3 and 4 resist a relatively small horizontal load applied to the building and a large horizontal load is applied to the building due to the occurrence of a large earthquake, the horizontal load is reduced. The first to fifth round steels 20, 21, 22, 30, and 31 of the brace materials 3 and 4 are stretched and absorbed by plastic deformation.

  At this time, since the shaft centers of the brace materials 3 and 4 are arranged on the same plane at the center of the shaft assembly 2, the bracing members 3 and 4 are fastened to the fastening plate 41 of the fixing member 12. Without applying an excessive force such as twisting or bending, a horizontal load can be efficiently transmitted over the entire load-bearing wall frame 1 to ensure good rigidity and strength.

  Moreover, when the first to fifth round steels 20, 21, 22, 30, 31 of the brace materials 3, 4 are stretched and plastically deformed, the brace materials 3, 4 are buckled in the thickness direction of the shaft assembly 2 and the outer wall material. However, this buckling can be prevented by the split frame type turnbuckle cylinder 25 for axial center alignment. In the past, the brace material was inserted into the through-hole of the middle rail provided in the shaft assembly to prevent such a buckling of the brace material. By using 25, the middle rail can be abolished from the shaft set 2.

  Furthermore, even if the first to fifth round steels 20, 21, 22, 30, 31 of the brace members 3 and 4 are stretched and plastically deformed, the shaft assembly 2 including the fixing members 12 and so on is not plastically deformed. The first to fifth round steel 20 can be continuously used, and is plastically deformed by removing only one side of the outer wall material or interior material attached to the load-bearing wall frame 1 and loosening the nuts 43 to prevent loosening. , 21, 22, 30, 31 can be replaced to restore the load-bearing wall frame 1 to its original state.

  In the case of a load-bearing wall in which the brace round steel is welded to the fixed member, when the round steel is stretched and plastically deformed, either replace the shaft assembly or cut the plastically deformed round steel to obtain a new one. Complicated repair work such as re-welding round steel is required. In addition, in the case of a load-bearing wall in which a battledore welded to a round steel brace material is fastened to a fixing member with bolts in a direction perpendicular to both the inner and outer directions (thickness direction) of the shaft assembly and the axial direction of the round steel When the round steel bar is stretched and plastically deformed, the battledore may also be deformed. In addition, in the case of a load bearing wall in which a battledore welded to a brace round steel is fastened to a fixing member with bolts in the inner and outer directions (thickness direction) of the shaft assembly, the length of the shaft assembly in the thickness direction is short. Since it is not possible to secure a sufficient working space for detaching the bolts by removing only one side of the outer wall material or the interior material, complicated repair work such as the necessity to remove both the inner and outer sides is required. . On the other hand, the load-bearing wall having the above configuration can be easily repaired without being forced to perform such complicated repair work.

(Second Embodiment)
In the load bearing wall according to the second embodiment, as shown in FIG. 7 and FIG. 8, through holes 51 a... Are formed in the fastening plates 51. A pair of retaining members screwed into the screw portions 20a, 22a, 30a, 31a through the screw portions 20a, 22a, 30a, 31a of the through-holes 51a,. The fastening portions 51 are sandwiched between the nuts 52, 52, thereby fixing the screw portions 20a, 22a, 30a, 31a to the fixing members 12, respectively.

  In such an attached state, the tension of the bracing members 3 and 4 can be adjusted by changing the tightening position of the retaining nuts 52 and 52 with respect to the screw portions 20a, 22a, 30a and 31a. It is also possible to omit the split-frame type turnbuckle bodies 24 and 32 for tension adjustment in the materials 3 and 4. 7 and 8 show the fixing structure of the screw portion 20a of one brace material 3 as an example, but the screw portion 22a of one brace material 3 and the screw portions 30a and 31a of the other brace material 3 are shown. Are also fixed to the fixing members 12. Other configurations and operational effects are the same as those of the first embodiment. In FIGS. 7 and 8, members having the same functions as those of the first embodiment are denoted by the same reference numerals.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the bearing wall of the present invention is not limited to a steel frame structure house but may be applied to a wooden house. In the load bearing wall of the above embodiment, the two brace members are incorporated in an X shape so as to cross each other along the diagonal line in the frame of the rectangular frame-shaped shaft set. As shown in Fig. 9, the frame of the rectangular frame-shaped shaft assembly is vertically divided, and the two brace members are incorporated in an X shape so as to cross each other in each of the upper and lower frames. Also good.

It is a front view of the bearing wall frame in the bearing wall concerning 1st Embodiment of this invention. It is a front view which shows the split frame type | mold turnbuckle cylinder for tension | tensile_strength adjustment and axial center position alignment. It is a cross-sectional view of a load-bearing wall frame. It is a disassembled perspective view which shows the fixing structure of the thread part of a brace material. It is a perspective view which shows the fixing structure of the screw part of a brace material. It is a longitudinal cross-sectional view which shows the fixing structure of the screw part of a brace material. It is a disassembled perspective view which shows the fixation structure of the screw part of the brace material in the load-bearing wall which concerns on 2nd Embodiment. It is a longitudinal cross-sectional view which shows the fixing structure of the screw part of a brace material. It is a front view which shows the modification of the bearing wall frame in a bearing wall.

Explanation of symbols

  2 .. Shaft assembly, 3 .. Brace material on one side, 4 .. Brace material on the other side, 24, 32 .. Split frame type turnbuckle body for tension adjustment, 25 .. Split frame type for axial alignment Turnbuckle barrel, 25c ... in frame, 20a, 22a, 30a, 31a ... screw part, 12 ... fixing member, 41a ... screw hole, 41 ... fastening plate with screw hole, 43 ... for locking Nuts, 51a ... through holes, 51 ... fastening plates with through holes, 52 ... nuts for retaining

Claims (4)

In the frame of the rectangular frame-shaped shaft assembly (2), the bracing material (3) (4) is a load-bearing wall assembled in an X shape so as to cross each other, and the brace material (3 ) (4) One brace material (3) is provided with a split frame type turnbuckle body (25) at the intersection with the other brace material (4), and the split frame type turnbuckle body (25) By inserting the other brace material (4) into the frame (25c), the axes of the one and other brace materials (3) and (4) are arranged on the same plane. Bearing wall. The one and the other brace members (3) and (4) are provided with a split frame type turn buckle body (24) and (32) for tension adjustment, and a split frame type turn buckle through which the other brace material (4) is inserted. The load-bearing wall according to claim 1, wherein the cylinder (25) is the same as the split-frame type turnbuckle cylinder (24) (32) for tension adjustment. Screw portions (20a) (22a) (30a) (31a) are formed at both ends along the length direction of the one and the other brace members (3) and (4), and the shaft assembly (2) is formed. A plurality of fixing members (12) for fixing the screw portions (20a) (22a) (30a) (31a) are provided, and the fixing members (12) are provided on the screw portions (20a). (22a), (30a) and (31a) are provided with fastening plates (41) with screw holes (41a) arranged so as to be substantially orthogonal to each other, and screw holes (41a) of these fastening plates (41). The screw part (20a) (22a) (30a) (31a) is screwed into the screw part (20a) (22a) (30a) (31a) and the nut (43) Press against the fastening plate (41) In Rukoto, said threaded portion (20a) (22a) (30a) (31a) of said fixing member (12) ... respectively fixed claim 1 or 2, wherein the bearing wall. Screw portions (20a) (22a) (30a) (31a) are formed at both ends along the length direction of the one and the other brace members (3) and (4), and the shaft assembly (2) is formed. A plurality of fixing members (12) for fixing the screw portions (20a) (22a) (30a) (31a) are provided, and the fixing members (12) are provided on the screw portions (20a). (22a), (30a), and (31a) are each provided with a fastening plate (51) with a through-hole (51a) arranged so as to be substantially orthogonal to the through-hole (51a) of these fastening plates (51). .. A pair of nuts (52) (52a) (20a) (22a) (30a) (31a) inserted through the screw parts (20a) (22a) (30a) (31a) 52) said fastening plate (51) The By sandwiching each, said threaded portion (20a) (22a) (30a) (31a) of said fixing member (12) respectively in · s fixed claim 1 or 2, wherein the bearing wall.

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