JP6180168B2 - Bearing wall joint structure and joint hardware - Google Patents

Description

  The present invention relates to a joint structure and joint hardware of a load bearing wall in a building using a load bearing wall composed of a wall panel, in particular, a wooden building, a steel frame structure, or a thin lightweight steel structure (steel house) building.

  Conventionally, as a wall panel as a load-bearing wall in a steel house, a vertical frame member in which a pair of grooved steel webs having a cross-sectional lip shape formed by bending a thin steel plate into a concave groove shape is arranged back to back. Are arranged at intervals, and the upper and lower portions thereof are connected by an upper horizontal frame member and a lower horizontal frame member having a cross-sectional groove shape formed by bending a thin steel plate into a concave groove shape. 2. Description of the Related Art A wall panel having a structural surface material such as a thin steel plate fixed on one side or both sides of a side surface by a fixing tool such as a screw or a drill screw is known (for example, see Patent Document 1).

  As shown in FIGS. 9 to 11, the web 31 of the conventional vertical frame member 30 is formed by arranging a pair of cross-section grooved steels 32 with lip back to back. And the groove | channel of the joint metal fitting 34 of the side opening groove shape cross section which has the flange 33 for joining so that it may protrude on both sides to the one bolt 1 of an up-down direction is fitted, and the upper-and-lower-ends part of the flange 33 for joining is said A pair of upper and lower crimping female screw members 35 screwed into the bolt 1 are mounted so that the position can be fixed. Furthermore, the web 31 of the vertical frame member 30 is arranged in the wall thickness direction and arranged so that the central axis of the bolt 1 is aligned with the central portion thereof, and the joining flanges 33 on both the left and right sides of the metal fitting 34 are arranged in the vertical frame. A structure of a wall panel 37 arranged on both sides in the width direction of the web 31 of the material 30 and joined by a number of drill screws 36 is known.

  Conventionally, as shown in FIGS. 11 and 12, a joining plate 39 in one hole-down hardware 38 is attached to a vertical frame member 30 having a pair of lip-shaped grooved steel 32 webs 31 back to back. The wall panel 37 has a structure in which the hole-down metal member 38 and the vertical frame member 30 are joined to each other by a large number of drill screws 36 disposed near the center of the web 31 so as to overlap the portion 31. It is known (see, for example, Patent Document 2).

  Further, as shown in FIG. 13, in the wall panel 37, the grooved steel 32 with the lip is arranged back to back on both sides of the web 41 in the grooved steel 40, and the web 31 of the grooved steel 32 with the lip is arranged on the web 31. There is also a structure in which the joining plates 39 in one hole-down hardware 38 are overlapped and joined by a number of drill screws 36.

  Conventionally, as a vibration control structure for reducing vibration of a building or the like, a structure in which a bending panel or a shear panel is installed between a foundation (base plate) and a column base in a column base of a column (for example, And Patent Document 3).

  In the vibration control structure disclosed in Patent Document 3, one side of a bending panel or a shear panel is joined to a column base by welding or the like, and the other side is joined to a base plate via a mounting plate (support plate). And when the tensile force of the direction which a column floats up by an earthquake etc. acts, a bending panel bends and yields, or a shear panel yields, and it is comprised so that tensile force may be absorbed.

JP 2005-320860 A JP 2005-248529 A JP 2004-92096 A

As shown in FIG. 5, in the event of an earthquake or when a wind load is applied to the building, the anchorage between the foundation and the load-bearing wall made up of the first floor wall panel of the building, or the lower floor side of the load-bearing wall on each floor At the time of an earthquake or the like, a tensile force (pull-out force) T and a compressive force (push-in force) C act on the joint portion on the upper floor.
In the case of each of the above prior arts, in the horizontal cross section, the web 31 has a design form in which one joint metal 34 or hole down metal 38 and one bolt or anchor bolt 1 are arranged. There is a problem that strengthening is difficult.

  There is a building such as a steel house having a joint structure in which a wall panel using one bolt or anchor bolt and one joint hardware or hole down hardware as described above is joined to a base or upper wall panel. When a horizontal force P acts on such a building during an earthquake, as a structure that resists the tensile force T, the conventional structure shown in FIG. Since it is a structure that stops on the web 31 of the frame member 30 and that only one hole-down hardware 38 can be arranged in the vertical frame member 30 in a horizontal cross section, the large horizontal size of the building When the number of floors increases, the third floor and the fourth floor, the pulling force increases. Therefore, when the tensile force T is applied as shown in FIG. Due to the out-of-plane bending deformation S, the hole-down hardware 38 rotates in the direction indicated by the arrow, and the drill screw 36 may come off. Therefore, there has been a demand for a high-strength joint structure that can sufficiently cope with an increase in the size of a building in the horizontal direction or the number of floors.

  Moreover, in the conventional vibration control structure disclosed in Patent Document 3, since the column and the base plate are connected via the shear panel, it is difficult to secure the construction accuracy when the column is erected, and the labor for the construction is also increased. Resulting in. In addition, since bent panels and shear panels are directly joined to the column base, these panels cannot be replaced after an earthquake or replaced with higher performance, resulting in poor maintainability. .

  Since it is difficult to achieve a high-strength joint structure as described above, the anchor bolt or the bolt is installed within the wall thickness width dimension of the vertical frame member in the bearing wall. The present invention has been completed as a result of various researches by obtaining knowledge that it is necessary to have a structure capable of sharing a load with installed anchor bolts or bolts.

  In addition, by making a joint structure that preferably prevents the rotation of the joint hardware due to the out-of-plane bending of the web on the vertical frame material side, we obtained knowledge that would be advantageous when making the bearing wall high-strength joint, and made various studies As a result, the present invention was completed.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a wall panel joining structure capable of eliminating bending deformation of a web of a vertical frame member having a groove-shaped cross section and capable of increasing strength, and a joining metal fitting used in the structure.

In the joint structure of the bearing walls according to the first aspect of the invention, in the panel structure in which the shape steel is used as the vertical frame member of the load bearing wall, the anchor wall or bolt and the vertical frame member are fixed via the joint hardware. A plurality of anchor bolts or bolts arranged in a wall thickness direction perpendicular to the frame surface formed of the frame material of the load bearing wall, and fixed to flanges at both end portions in the wall thickness direction of the vertical frame material A member, a vertical portion fixed to the first joining member, and a bolt insertion hole provided so as to protrude horizontally from the vertical portion to both sides in the wall thickness direction and through which the plurality of anchor bolts or bolts are inserted and fixed The plurality of anchor bolts or bolts and the vertical frame member are joined to each second joining member in the wall width direction by a joining hardware comprising a second joining member made of a T-shaped metal section having an attached flange. Provided From the bolt hole center distance (H) in the wall width direction of the bolt insertion hole of the flange with the G insertion hole, the distance between the shaft centers (R) in the wall width direction of the anchor bolts or bolts inserted through the bolt insertion holes. Characterized by being made smaller .

In the joint structure of the bearing walls according to the second aspect of the invention , in the panel structure in which the shape steel is used for the vertical frame member of the load bearing wall, the anchor wall or the bolt and the vertical frame member are fixed via the joint hardware. A plurality of anchor bolts or bolts arranged in a wall thickness direction perpendicular to the frame surface formed of the frame material of the load bearing wall, and fixed to flanges at both end portions in the wall thickness direction of the vertical frame material A member, a vertical portion fixed to the first joining member, and a flange with a bolt insertion hole provided so as to protrude from the vertical portion to both sides in the wall thickness direction and through which the plurality of anchor bolts or bolts are inserted and fixed The plurality of anchor bolts or bolts and the vertical frame member are joined together by a joining hardware comprising a second joining member made of a T-shaped section having a cross section, and the section T-shaped portion of the second joining member is Edge of vertical frame A horizontal plate that is provided at a position away from the vertical frame member in the axial direction and has an bolt or a bolt insertion hole for inserting a bolt at the end of the vertical frame member; Engages with an anchor bolt or a female screw member attached to the bolt, thereby controlling the amount of shear displacement of the first joint hardware .

In the third invention, in the joint structure of the load bearing walls of the first invention or the second invention, the first joining member includes a cylindrical body, and the vertical frame member in which the opposing flanges are arranged in the wall thickness direction. The pair of opposing two surfaces of the cylindrical body are arranged so as to overlap between the opposing flange inner surfaces, and the pair of opposing two surfaces that are not joined to the second joining member of the first joining member are vertically The opposing flanges of the frame member are respectively joined by screwing, bolting or welding .

According to a fourth aspect of the invention, in the joint structure of the bearing walls according to the third aspect of the invention, the web portion in the wall thickness direction of the tubular body of the first joining member is provided with a lateral slit at an interval in the vertical direction. The metal joint is a damper member for vibration control .

In the bonding structure of the bearing walls of the fifth invention, in the bonding structure of any of the bearing walls of the first invention to the fourth invention, the yield strength of the first joint member, than the yield strength of the plurality of anchor bolts and bolts The first joining member can be deformed while maintaining a proof stress.

In the metal joint of the sixth invention, in the joint structure of the bearing walls of any one of the first to fifth inventions, a first joint member provided with a cylindrical body, and a vertical portion fixed to the first joint member And a second joint member made of a T-shaped metal part having a bolt insertion hole flange extending horizontally in the wall thickness direction on both sides of the vertical portion.

  According to the joint structure of the bearing walls according to the first aspect of the invention, in the panel structure in which the shape steel is used for the vertical frame member of the load bearing wall, the anchor wall or bolt and the vertical frame member are fixed via the joint hardware. A plurality of anchor bolts or bolts are arranged in a wall thickness direction perpendicular to the frame surface formed by the frame material of the load bearing wall, and are fixed to flanges at both ends of the vertical frame material in the wall thickness direction. A joining member, a vertical portion fixed to the first joining member, and a bolt insertion that is provided so as to project horizontally from the vertical portion to both sides in the wall thickness direction and is inserted and fixed through the plurality of anchor bolts or bolts Since the plurality of anchor bolts or bolts and the vertical frame member are joined to each other by a joining hardware including a second joining member made of a T-shaped metal section having a flange with a hole, the load-bearing wall has a simple structure. High strength Effects such can allow a slip can be obtained. According to the joint structure of the bearing walls of the first invention, the first joining member can absorb the tensile force T and the compressive force C at the time of earthquake, and the second joining member has a plurality of anchor bolts or bolts. Since they can be joined, a plurality of anchor bolts or bolts can sufficiently counter the horizontal force P, tensile force T, and compressive force C acting during an earthquake.

According to a third invention, in the joint structure of the load bearing walls of the first invention or the second invention , the first joining member is provided with a cylindrical body, and in a vertical frame material in which opposing flanges are arranged in the wall thickness direction. The pair of opposing two surfaces of the first joint member that are disposed so as to overlap each other between the opposing flange inner surfaces and are not joined to the second joint member of the first joint member; Since the opposing flanges of the vertical frame member are respectively joined by screwing, bolting or welding, both ends in the wall thickness direction of the first joining member in the joint metal are restrained, so that the screw comes out. The effect such as not being obtained. The effect of being able to be joined to the flange of the vertical frame material without being joined to the web of the vertical frame material, and to be a joint metal hardware that can be fixed to the anchor bolt or the bolt by the simple structure of the joint hardware. Is obtained.

According to the fourth invention, in the joint structure of the load-bearing walls of the third invention, the web portion in the wall thickness direction of the tubular body of the first joining member is provided with a slit in the lateral direction with an interval in the vertical direction. Since the joint hardware is a damper member for vibration control, when a tensile force or a compressive force is applied to the first joint member in the bearing wall during an earthquake or the like, the first joint member is sheared. By deforming, it is possible to obtain an effect such as absorbing energy during an earthquake and exhibiting a vibration control function.

According to the joint structure of the bearing walls of the second invention, provided at a position where a T-shaped portion of the front Stories second joint member is separated from the end portion of the vertical frame member in the axial direction of the vertical frame members, the vertical frame members Since an anchor bolt or a horizontal plate having a bolt insertion hole for inserting the bolt is fixed by welding at the end, female thread members are arranged above and below the horizontal plate, and the proof stress through the horizontal plate The effect that a compressive force or a tensile force can be transmitted to the vertical frame member of the wall and the anchor bolt or the bolt is obtained.

According to the joint structure of the bearing walls of the first invention, from the bolt hole center distance of the wall width direction of the bolt insertion hole with the flange of the bolt insertion holes provided in the second joint member wall width direction, each of the bolt insertion Since the distance between the shaft centers of the anchor bolts or bolts inserted in the holes in the wall width direction is reduced, the inner peripheral surface of the bolt insertion holes are brought into contact with the bolt bolts of the anchor bolts or bolts on the compression side, The lateral movement of the wall in the wall width direction can be constrained, and the anchor bolt or the center axis of the bolt comes closer to the center axis of the bolt insertion hole on the other side (tensile side) in the wall width direction. Since the gap between the part and the inner peripheral surface of the bolt insertion hole is sufficient, it is possible to make it easy to operate the vibration control action due to the shear deformation of the other joint (tensile side) in the wall width direction. An effect is obtained.

According to the joint structure of the bearing walls of the fifth invention, in the joint structure of the bearing walls of any of the first to fourth inventions, the yield strength of the first joining member is the yield strength of the plurality of anchor bolts and bolts. Since the first joining member is made deformable while maintaining proof strength, the first joining member absorbs the energy at the time of earthquake by the shear deformation of the first joining member of the joining hardware at the time of an earthquake or the like. Can do.

According to the joint hardware of the sixth invention, in the joint structure of the bearing walls of any of the first invention to the fifth invention, the joint hardware includes a first joint member provided with a cylindrical body, and the first joint member. Since it includes a second joining member made of a T-shaped cross section having a fixed vertical portion and a flange with a bolt insertion hole provided so as to protrude horizontally in the wall thickness direction on both sides of the vertical portion, A structure in which the first joining member can be joined to the vertical portion of the second joining member at the center in the wall thickness direction without arranging a plurality of anchor bolts or bolts in the first joining member in the joint hardware. The first joint member is provided with a lateral slit, and when compressive force or tensile force is applied during an earthquake or the like, the first joint member is subjected to shear deformation at the portion of the first joint member to exert a damping function. Can be wall joined structure etc. Results can be obtained.

It is a vertical front view which shows the joining structure of the wall panel of one Embodiment of this invention. It is a vertical side view of the joining structure of the wall panel shown in FIG. It is a cross-sectional top view of the joining structure of the wall panel shown in FIG. It is a partial cross section perspective view which shows the joining structure vicinity of the wall panel of one Embodiment of this invention shown in FIGS. It is explanatory drawing of the drawing force (tensile force) and pushing force (compression force) acting when a horizontal force acts on a building, and the one end side of a lower horizontal frame material floating. (A) is a schematic plan view showing a form in which the distance between anchor bolts or bolt shaft cores of a load bearing wall made of a wall panel is made smaller than the distance between bolt insertion holes in the joint hardware at both ends in the wall width direction, (b) 5, in the compression side, the anchor bolt or the bolt shaft portion is engaged and restrained by the bolt insertion hole, and on the tension side, the anchor bolt or the bolt shaft portion is the central portion of the bolt insertion hole. It is a schematic plan view which shows the state made into the free state by the side. When a large tensile force is applied to the other vertical frame member in the wall width direction of the load bearing wall, the vertical frame member floats together with the horizontal plate, the first joining member is broken by shear deformation, and the horizontal plate is anchor bolt. It is a vertical front view which shows the state which engages with the lower female screw member of the side, and prevents the collapse of a building. It is a schematic whole view of the joining structure of this invention in the case of joining the vertical frame material in the bearing wall which consists of a wall panel adjacent up and down across an end joist or a side joist. Side wall groove-shaped cross-section metal fitting in which the vertical frame material of the wall panel on the upper floor side and the vertical frame material of the wall panel on the lower floor side are mounted so that the position can be fixed to the upper and lower parts of the bolt. It is the vertical side view joined by this. 9A and 9B are cross-sectional plan views of the joint structure shown in FIG. 9, in which FIG. 9A is a cross-sectional plan view near the female screw member screwed into the bolt, FIG. 9B is a cross-sectional plan view near the washer attached to the bolt, and FIG. It is a cross-sectional top view of the joining metal vicinity of a side opening groove shape cross section. It is a schematic whole figure of the conventional joining structure in the case of joining the vertical frame material in the wall panel adjacent up and down across an end joist or a side joist. (A) is the cross-sectional top view which shows the other form of the joining structure of the conventional wall panel, (b) is the front view which abbreviate | omits the part and shows. It is a cross-sectional top view which shows the form different from FIG. 12 of the joining structure of the conventional wall panel. It is explanatory drawing which shows the state in which the web in a vertical frame material is bending-deformed, and the hole down metal | hardware is rotating.

    Next, the present invention will be described in detail based on the illustrated embodiment.

  First, referring to FIG. 1 to FIG. 3, a description will be given of a load-bearing wall joining structure including a wall panel according to a first embodiment of the present invention.

  FIG. 1 is a longitudinal front view showing a wall panel joining structure according to a first embodiment of the present invention. 1-3 is a figure which shows the lower left vicinity vicinity shown in FIG. 1 to 3 show a structure in which a load-bearing wall 2 is fixed to a plurality of anchor bolts or bolts 1 in a wall thickness direction fixed to a foundation 10 such as a concrete foundation via a joint hardware 3. ing.

  1-3, the one side part of the lower side of the load bearing wall 2 which consists of wall panels, such as a rectangular shape, is shown by the front view. The load-bearing wall 2 made of steel wall panels is welded to the left and right vertical frame members 4 made of channel steel, the upper horizontal frame material 5 such as channel steel, and the lower horizontal frame material 5 at their ends. Etc., and an intermediate horizontal frame member or intermediate vertical frame member is appropriately disposed in the intermediate portion, and an end portion thereof is bonded to the vertical frame member 4 or the upper and lower horizontal frame members 5 so as to be viewed from the front as a whole. And a frame frame 15 having a square or rectangular outer shape.

  The load-bearing wall 2 composed of the above-mentioned wall panel is a building, particularly a steel house (usually a frame material made of a thin lightweight steel having a thickness of 0.4 mm or more and less than 2.3 mm, and a frame surface constituted by this frame material. In the case of the load-bearing wall 2 used in a steel-based panel structure, which is constructed by combining the structural face material 7 and the steel structure, the plate thickness dimension of the vertical frame member 4 in the load-bearing wall 2 is There is a case of the load bearing wall 2 in which the vertical frame member 4 and the horizontal frame member 5 made of a steel plate having a plate thickness of, for example, 2.3 mm or more, for example, 4.5 mm, other than the above-described dimensions. In the illustrated embodiment, the latter form is illustrated. Further, a horizontal plate 6 made of a thick steel plate is provided at an end portion in the axial direction of the vertical frame member 4 in the bearing wall 2. The plate 6 is a base plate when seated on the lower end side, and a plate that supports the structure on the upper floor side on the upper end side.

  The load-bearing wall 2 made of the wall panel may be used in a building including a frame member made of steel and a brace panel attached to the frame member by welding. In a wooden house, a steel structure building, etc. May be used.

  The load bearing wall 2 made of a wall panel is provided with vertical frame members 4 at both left and right ends. In the case shown in FIG. 1, a grooved steel web 8 having a cross-sectional groove shape is arranged in the wall thickness direction X, and flanges 9 are arranged on both end sides in the wall thickness direction. The vertical frame member 4 is arranged so that the groove side facing the central side in the wall width direction is oriented.

  The metal joint 3 is inserted into the groove formed by the web 8 of the vertical frame member 4 and each flange 9 from the side of the groove of the vertical frame member 4 and abuts against the inner surface of the flange 9 of the vertical frame member 4. Has been attached.

  Here, one Embodiment of the said joining metal fitting 3 used in this invention is described. The metal joint 3 includes a first joining member 11 fixed to the flanges 9 at both end portions in the wall thickness direction of the vertical frame member 4, a vertical portion 12 made of a steel plate fixed to the first joining member 11, and a vertical portion thereof. A second joint made of a T-shaped metal section having a bolt insertion hole flange 13 which is provided so as to project horizontally in the wall thickness direction on both sides of the portion 12 and is fixed by inserting the plurality of anchor bolts or bolts 1. And a member 14.

  The first joining member 11 includes a cylindrical body having a substantially square or substantially rectangular cross section. In the illustrated embodiment, the first joining member 11 is a short pair of two opposing surfaces spaced in the wall thickness direction. In addition to the flanges 16 on the sides, the webs 17 in the wall thickness direction connecting the both ends of the flanges 16 are provided so as to face each other with a gap therebetween.

  At the center in the width direction of the web 17, a vertical slit 18 is provided at an intermediate portion in the vertical direction, and both side surfaces (walls) of the vertical portion 12 in the second joining member 14 are closed so as to close the vertical slit 18. Both side surfaces in the width direction) are arranged inside the webs 17 facing each other in the first joining member 11, and the inner side surface of the vertical slit 18 and the vertical portion 12 in the first joining member 11 are as shown in FIG. Are integrated by welding W indicated by a thick black solid line. The vertical central axis of the vertical portion 12 and the central axis of the vertical slit 18 are arranged so as to coincide with each other and fixed by welding, whereby the vertical shearing of the first joining member 11 is performed. The deformation resistance is made to be equal left and right with the vertical portion 12 as the center. The number of the lateral slits 19 is set by design. There is a case where the lateral slit 19 is provided and a case where it is not provided.

  In the illustrated embodiment, the webs 17 on both sides of the vertical slit 18 in the first joining member 11 except for the horizontal slits 19a at the upper and lower ends are arranged in a plurality of horizontal directions (horizontal) with intervals in the vertical direction. Direction) slits 19 are provided symmetrically about the vertical slit 18. Further, the flange 16 on each short side of the first joining member 11 is in contact with the inner side surface (the inner side surface on the groove side) of the flange 9 on the short side of the vertical frame member 4, so that the vertical frame member 4 A plurality of drill screws 20 screwed over the flange 9 of the vertical frame member 4 and the flange 16 of the first joining member 11 from the outside are screwed and joined.

  The webs 17 facing each other with a gap in the wall width direction of the first joining member 11 are shorter than the length of the vertical portion 12 of the second joining member 14, and It is installed on the upper end side.

  On the base end side of the vertical portion 12 in the second joining member 14, there are provided flanges 13 with bolt insertion holes extending horizontally in the wall thickness direction on both sides of the vertical portion 12. A plurality (two in the case of illustration) of anchor bolts 1 are provided at equal distances with the vertical portion 12 as a center at intervals in the wall thickness direction.

  In the groove formed by the web 8 and the flange 9 of the vertical frame member 4, the joint metal 3 is separated from the axial end of the vertical frame member 4 in the axial direction of the vertical frame member 4. It is inserted from the side of the vertical frame member 4 and fixed to the flange 9 of the vertical frame member 4 by a number of drill screws 20 spaced in the vertical direction. In addition, joining of the metal joint 3 and the vertical frame member 4 is not limited to screw joining, and may be bolt joining or welding joining.

  The case where the load bearing wall 2 composed of the above-described wall panel is built will be described. Each of the tip ends of the anchor bolts 1 fixed to the foundation 10 is bolt insertion holes 21 of the plate 6 as the base plate in the load bearing wall 2. The lower female screw member 22 is installed at a predetermined position on each anchor bolt 1 and a lower washer is mounted, and the bolt insertion hole 21 of the flange 13 with the bolt insertion hole of the second joining member 14 in the joint metal 3 is inserted. Then, the upper washer and the upper female screw member 23 are screwed in, and the load bearing wall 2 composed of the wall panel is erected by the plurality of anchor bolts 1 in the wall thickness direction on both sides in the wall width direction.

  The yield strength of the first joining member 11 in the joint metal 3 is made lower than the yield strength of the plurality of anchor bolts 1, so that the first joining member 11 can be deformed while maintaining the yield strength. Therefore, a part of the metal joint 3 can be deformed while maintaining the proof stress.

  In addition, as schematically shown in FIG. 8, when connecting the load-bearing wall 2 made of the wall panel to a similar load-bearing wall 2 on the upper floor side, the upper part of the vertical frame member 4 in the load-bearing wall 2, The first joint member 11 is attached to the vertical frame member 4 with a drill screw 20 by inverting the same joint hardware 3 as in FIG. The first joining member 11 may be attached to the vertical frame member 4 by bolt joining or welding joining. In addition, the concrete foundation 10 in the embodiment is replaced with a beam, eaves beam, or a cylindrical compression reinforcing member on the side of the face, and the anchor bolt 1 is joined to the cylindrical compression reinforcing member. You may replace with the volt | bolt 1 (or several volt | bolt 1 of the length which crosses enough to the metal fitting 3 of the load-bearing wall 2 of an upper and lower floor). In such a case, if two joint metal fittings 3 are provided at an interval between the load-bearing walls 2 on the upper and lower floors, the wall thickness of the load-bearing wall 2 on the upper floor side and the load-bearing wall 2 on the lower floor side are set to each other. It can be set as the joining structure joined via the cylindrical reinforcement member or the joint metal fitting 3 with the some volt | bolt 1 which spaced in the direction. In such a case, the tensile force T and the compressive force C can be transmitted to the lower floor side or the upper floor side if a cylindrical compression reinforcing member and an adjustment plate are interposed in the floor panel.

  Further, since each flange 16 of the first rectangular rectangular joining member 11 is fixed to the flange 9 on the short side of the vertical frame member 4, a horizontal force P is applied during an earthquake or a wind load. In this case, even if a tensile force T acts on the flange 9 in the vertical frame member 4, the web 8 of the vertical frame member 4 does not deform in the out-of-plane direction on the side of the metal joint 3. Since there is no fear of rotating in the out-of-plane direction, the possibility of the drill screw 20 joining the first joining member 11 and the flange 9 of the vertical frame member 4 in the joint metal 3 can be eliminated, and the drill screw Thus, the screw joint efficiency of 20 can be increased to obtain a highly rigid joint structure.

  Further, since the vertical portion 12 of the second bonding member 14 is disposed and fixed at the center portion in the wall thickness direction of the first bonding member 11, the web of the first bonding member 11 on both sides of the vertical portion 12. 17 can be provided with a lateral slit 19, the first joining member 11 can be a damper member capable of shear deformation, and the joining hardware 3 that reliably exhibits a vibration control function can be obtained. The joint metal 3 is incorporated in advance in each vertical frame member 4 of the bearing wall 2 in a factory or the like.

  Thus, in the panel structure using the shape steel for the vertical frame member 4 of the load-bearing wall 2, the anchor bolt 1 or the bolt 1 and the vertical frame member 4 are fixed to each other through the metal fitting 3 in the load-bearing wall joint structure. Since a plurality of anchor bolts 1 or bolts 1 are arranged at intervals in the wall thickness direction perpendicular to the frame surface composed of the frame material of the load bearing wall 2, high strength joining of the load bearing walls is possible with a simple structure. I have to.

  When a plurality of anchor bolts 1 or bolts 1 are arranged as in the above embodiment, the distance from the longitudinal center axis of the load bearing wall panel 24 to the bolt 1 in the wall thickness direction is made equal, and the same applies to the upper and lower floors. By setting in this way, the stress of the bolts acting on each anchor bolt 1 or bolt 1 can be equally borne. In addition, by equally burdening the plurality of anchor bolts 1, the anchor bolt 1 can be made smaller than when only one diameter cross section is provided. In addition, the embodiment can sufficiently counter the horizontal force P, the tensile force T, and the compressive force C acting during an earthquake by using a plurality of anchor bolts or bolts 1. Further, since the flange 16 of the first joining member 11 in the joint metal 3 is screwed to the flange 9 in the vertical frame member 4, both ends of the joint metal 3 in the wall thickness direction are constrained, and a drill screw The fear that 20 will come out can be eliminated. In addition, since the drill screw 20 can be prevented from coming off, the screw joining efficiency can be improved to improve the joining strength of the joint portion, and the number of screws can be reduced.

  When the tensile force T is applied so that the vertical frame member 4 in the bearing wall 2 is separated from the foundation 10, the second joining member 14 is moved by the bolt 1 or the anchor bolt 1 as shown in FIG. 7. Since the flange 9 side of the first joining member 11 rises because it is held at a fixed position, and the first joining member 11 undergoes shear plastic deformation, energy input to the building during an earthquake or the like Reduces the vibration and demonstrates the vibration control function. When the shear plastic deformation of the first joining member 11 is increased, the first joining member 11 is ruptured by shear deformation at the narrow width portion 26 near the center of the horizontal slit 19 in the first joining member 11 after the shear deformation. The horizontal plate 6 as the base plate in the bearing wall 2 becomes a stopper in a state in which it is engaged with the lower female screw member 22 attached to the bolt 1 or the anchor bolt 1 to prevent further tilting and prevent the building from collapsing. It is in the form. Depending on the setting of the distance between the plate 6 and the lower female screw member 22, the narrow width portion 26 of the first joining member 11 can be used without breaking, or the narrow width portion 26 of the first joining member 11 can be broken. You can do it.

  As described above, the second joining member 14 having a T-shaped cross section (or inverted T-shaped) is initially positioned away from the horizontal plate 6 at the end of the vertical frame member 4 in the bearing wall 2. , Shear deformation of the first joining member 11 in both the upper and lower directions is allowed. Thus, the metal joint 3 provided with the first joint member 11 and the second joint member 14 is a damper member for vibration control.

  It should be noted that, as in the above-described conventional structure, the joint metal 3 of the load bearing wall on the upper floor side and the joint hardware 3 of the load bearing wall on the lower floor side are positioned relative to the plurality of bolts by the long bolts extending over the upper and lower floors. In the case of being fixedly mounted, either one of the joint hardware 3 disposed at the upper part of the lower-layer load bearing wall and the joint hardware 3 disposed at the lower portion of the upper-floor bearing wall or You may make it exhibit both the metal fittings 3 as the 1st joining member 11 which has the slit 19 of the horizontal direction, and exhibits the damping effect by the shear deformation of the 1st joining member 11 as mentioned above.

  Next, with reference to FIG. 5 and FIG. 6, a description will be given of an embodiment in which one of the metal fittings 3 is operated by restraining the bearing wall 2 so as not to move in the wall width direction in the case of the above-described embodiment. To do. As shown in FIG. 6 (a), each bolt is determined from the bolt hole center distance H in the wall width direction of the bolt insertion hole 21 of the bolt insertion hole flange 13 provided in each second joining member 14 in the wall width direction. The anchor bolt 1 inserted through the insertion hole 21 or the axial center distance R in the wall width direction of the bolt 1 is slightly reduced. When the bearing center wall distance R on the bolt side is slightly smaller than the bolt hole center distance H, the load bearing wall 2 is shear-deformed and the lower horizontal frame member 5 side is inclined as shown in FIG. As shown, the inner peripheral surface of the bolt insertion hole 21 is brought into contact with the outer peripheral surface Y of the anchor bolt 1 on the compression side or the bolt shaft portion 25 of the bolt 1 to restrain the lateral movement of the load bearing wall 2 in the wall width direction. In addition, the anchor bolt 1 or the center axis of the bolt 1 comes closer to the center axis of the other bolt insertion hole 21 in the wall width direction. It is possible to make the action easy to operate. As described above, when the inner peripheral surface of the bolt insertion hole 21 can be brought into contact with the anchor bolt 1 on the compression side or the bolt shaft portion 25 of the bolt 1, the lateral movement of the bearing wall 2 in the wall width direction is restrained. Therefore, as shown in FIG. 11, it is not necessary to separately erect the shear restraint anchor 27 on the foundation 10 to restrain the movement of the horizontal frame member 5, and therefore the shear restraint anchor 27 is omitted. can do.

As described above, as the distance difference to slightly reduce the bolt 1 or the axis distance R of the anchor bolt 1 from the bolt hole center distance H, for example, the bolt shaft portion 25 the diameter D of the _R and bolt insertion holes 21 It is assumed that the difference from the diameter _DH is smaller.

  In addition, joining by the drill screw 20 in the said embodiment is joined by bearing joining. When practicing the present invention, other screw joints, bolt joints, or weld joints may be used instead of the drill screw 20 described above. Moreover, as the said vertical frame material 4, it is good also as grooved steel with a lip.

  When practicing the present invention, the second joining member may be a steel having a T-shaped cross section and formed with a bolt insertion hole, or a form in which steel plates are joined by bolts or welding.

DESCRIPTION OF SYMBOLS 1 Anchor bolt, bolt 2 Bearing wall 3 Joint metal fitting 4 Vertical frame material 5 Horizontal frame material 6 Plate (or base plate)
7 Structural face material 8 Web (for vertical frame material)
9 Flange (for vertical frame)
DESCRIPTION OF SYMBOLS 10 Base 11 1st joining member 12 Vertical part 13 Flange 14 with bolt insertion hole 2nd joining member 15 Frame-shaped frame 16 Flange (1st joining member)
17 Web (of the first joining member)
18 Vertical slit 19 Horizontal slit 20 Drill screw 21 Bolt insertion hole 22 Lower female screw member 23 Upper female screw member 24 Bearing wall panel 25 Bolt shaft portion 26 Narrow portion 27 Shear restraint anchor 30 Vertical frame member 31 Web 32 Groove with lip Shaped steel 33 Flange for joining 34 Joint metal fitting 35 Female screw member for crimping 36 Drill screw 37 Wall panel 38 Hole down hardware 39 Joining plate

Claims (6)

In the panel structure using the shape steel as the vertical frame material of the load bearing wall, the anchor wall or the bolt and the vertical frame material are fixed to each other through the metal fittings. A plurality of anchor bolts or bolts are arranged in the wall thickness direction orthogonal to the frame surface, and fixed to the flanges at both ends of the vertical frame member in the wall thickness direction, and fixed to the first bonding member. A second T-shaped metal part having a vertical portion and a flange with a bolt insertion hole which is provided so as to protrude from the vertical portion to both sides in the wall thickness direction and is fixed by inserting the plurality of anchor bolts or bolts. The plurality of anchor bolts or bolts and the vertical frame member are joined by a joint hardware provided with a joining member, and the bolt insertion holes of the flanges with bolt insertion holes provided in the respective second joining members in the wall width direction wall From the direction of the bolt hole center distance (H), the bonding structure of the bearing wall, wherein said having a reduced axial distance between the centers of the wall width direction of the anchor bolt or bolts are inserted through the respective bolt insertion holes (R) . In the panel structure using the shape steel as the vertical frame material of the load bearing wall, the anchor wall or the bolt and the vertical frame material are fixed to each other through the metal fittings. A plurality of anchor bolts or bolts are arranged in the wall thickness direction orthogonal to the frame surface, and fixed to the flanges at both ends of the vertical frame member in the wall thickness direction, and fixed to the first bonding member. A second T-shaped metal part having a vertical portion and a flange with a bolt insertion hole which is provided so as to protrude from the vertical portion to both sides in the wall thickness direction and is fixed by inserting the plurality of anchor bolts or bolts. The plurality of anchor bolts or bolts and the vertical frame member are bonded to each other by a metal fitting provided with a bonding member, and the cross-sectional T-shaped portion of the second bonding member is the end of the vertical frame member or the vertical frame member. Axis away from A horizontal plate having a bolt insertion hole for inserting an anchor bolt or a bolt is fixed to the end of the vertical frame member by welding, and the plate is attached to the female screw member attached to the anchor bolt or the bolt. junction structure resistant force wall you characterized in that a controls the shear displacement of the first joint hardware by engaging. The first joining member includes a cylindrical body, and a pair of two opposing surfaces of the cylindrical body overlap between the opposing flange inner surfaces in a vertical frame member in which opposing flanges are arranged in the wall thickness direction. The pair of opposing two surfaces not joined to the second joining member of the first joining member and the opposing flange of the vertical frame member are joined by screwing, bolting or welding, respectively. bonding structure for bearing walls according to claim 1 or 2, characterized in that is. The web portion in the wall thickness direction of the cylindrical body of the first joining member is provided with a slit in the lateral direction with a space in the vertical direction, and the joining hardware is a damper member for vibration control. The joint structure of a load-bearing wall according to claim 3 . The yield strength of the first joining member is lower than the yield strength of the plurality of anchor bolts and bolts, and the first joining member is deformable while maintaining the yield strength. The joint structure of the load-bearing wall of any one of Claims 1-4 . It is a joining hardware used for the joining structure of a load bearing wall given in any 1 paragraph of Claims 1-5 , Comprising: It fixes to the 1st joining member provided with the cylindrical body, and the 1st joining member. A joining hardware comprising: a second joining member made of a T-shaped metal section having a vertical portion and a flange with a bolt insertion hole provided so as to project in the wall thickness direction on both sides of the vertical portion. .

Images