JP5891982B2 - Bearing wall joint structure - 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 wall panels, in particular, a 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 including a structural surface material such as a thin steel plate that is fixed to one side or both sides of a side surface by a fastener such as a screw or a drill screw is known (for example, see Patent Document 1).

  As shown in FIGS. 13 to 15, the web 31 of the conventional vertical frame member 30 is formed by arranging a pair of cross-section grooved steel 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. 15 and 16, a bonding 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).

JP 2005-320860 A JP 2005-248529 A

  As shown in FIG. 12, when a horizontal force Q such as a wind load acts on the building during an earthquake, the anchoring portion between the foundation 10 and the load-bearing wall 2 composed of the first floor wall panel of the building, or the strength of each floor. A tensile force (pull-out force) T and a compressive force (push-in force) C act on the joint between the lower floor side and the upper floor side of the wall during an earthquake or the like.

  In the case of each of the prior arts described above, in a horizontal cross section, a single metal fitting 34 or a hole-down metal piece 38 and one bolt 1 or anchor bolt 1 are arranged on a shaped steel web 31. Therefore, there is a problem that it is difficult to increase the strength.

  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 metal or hole-down metal is joined to a wall panel on a foundation or an upper floor. When a horizontal force Q 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 size of the building in the horizontal direction is increased. Alternatively, when the number of floors is increased to the third floor and the fourth floor, the pulling force also increases. Therefore, when the tensile force T is applied as shown in FIG. There is a problem that the hole-down metal piece 38 rotates in the direction indicated by the arrow M due to the outer bending deformation S, 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.

  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 load-bearing walls of the first invention, in the joint structure of the load-bearing walls in which the thin bolt lightweight steel is used for the vertical frame member of the load-bearing wall, and the anchor bolt or the bolt and the vertical frame member are fixed via the joint hardware, A plurality of anchor bolts or bolts are arranged in the wall thickness direction orthogonal to the structural face material attached to at least one side of the load bearing wall, and the joint hardware is a rectangle whose horizontal cross-sectional shape has a long side in the wall thickness direction. A cylindrical body, arranged so that the short side of the rectangular cylindrical body overlaps with the flange inner surface facing the short side of the vertical frame member, and the short side of the joint metal and the vertical side Each flange of the frame member is screwed to each other, and includes a plurality of inner cylindrical bodies that house and arrange the anchor bolts or bolts, and the inner cylindrical body extends in the wall thickness direction inside the rectangular cylindrical body. Centered at intervals In, characterized in that it is fixed to the cylindrical body of said rectangle together are arranged in a plurality of symmetry.

In the second invention, in the joint structure of the bearing walls of the first invention, the yield strength of the joint hardware is lower than the yield strength of the plurality of anchor bolts and bolts, and the joint hardware maintains the yield strength. However, it can be deformed .

In the third aspect of the invention, in the structure of the load bearing wall in which the anchor bolt or the bolt and the vertical frame member are fixed via the joint hardware using a thin lightweight steel for the vertical frame material of the load bearing wall, at least one surface of the load bearing wall is provided. A plurality of anchor bolts or bolts are arranged in the wall thickness direction orthogonal to the structural surface material attached to the structural face material, and the joint hardware is arranged in parallel in the wall thickness direction from the lower side to the upper side of the load bearing wall. Webs formed by the groove-shaped members formed, and joining flanges having bolt insertion holes penetrating in the vertical direction at the upper and lower ends of the respective groove-shaped members, and the web of the joint hardware is the vertical frame It is characterized by being superposed on a web of material and screw-joined, and the joining flange is connected by a plurality of anchor bolts or bolts arranged in the wall thickness direction .

  According to the first aspect of the present invention, in the joining structure of the bearing walls in which the thin bolts are used for the longitudinal frame member of the bearing wall, and the anchor bolt or the bolt and the longitudinal frame member are fixed via the joining hardware, at least the bearing wall is provided. Since a plurality of anchor bolts or bolts are arranged in the wall thickness direction orthogonal to the structural face material attached to one side, effects such as enabling a high-strength joining of the bearing walls with a simple structure can be obtained. .

Further, according to the first invention, before Symbol joining hardware includes a a rectangle horizontal cross-sectional shape having a long side in the wall thickness direction cylindrical member, flange inner surface facing the short side of the vertical frame members Are arranged so that the short side of the rectangular cylindrical body overlaps, and the short sides of the joint metal and the flanges of the vertical frame member are respectively screwed, so that the web of the joint metal and the vertical frame It is possible to prevent the web of the vertical frame material from being bent and deformed in the out-of-plane direction, and the flanges of the joint hardware are arranged on both sides in the wall thickness direction. Since the flanges of the material are arranged on both sides in the wall thickness direction, and each flange is superposed on the short side and screwed together, both ends of the metal fitting in the wall thickness direction are constrained so that the screws do not come out. Etc. are obtained.

According to the second invention, the yield strength of prior SL joint fittings, the lower than the yield strength of a plurality of anchor bolts and bolts, and the joint fittings, since it is deformable while retaining the strength, seismic energy Can be effectively absorbed.

According to joining hardware to be used for joining the structure of the bearing walls of the first invention, before Symbol joining hardware includes a plurality of inner tubular body to the anchor bolt or housing disposed bolts, its inner tubular member, the cylinder of the rectangular Since a plurality of pieces are arranged at intervals in the wall thickness direction on the inner side of the body and are fixed to the rectangular tubular body, it is possible to join the web of the vertical frame member with a simple structure joint hardware. In addition, it is possible to obtain an effect that it can be joined to the flange of the vertical frame member and can be an anchor bolt or a joint metal that can be fixed to the bolt.

According to a third aspect of the present invention, before Symbol joining hardware includes a web provided over upwardly from below said bearing wall, and a joining flange provided on the upper and lower ends of the web, the web of the joining hardware the Since it is superposed on the web of the vertical frame material and screw-joined, and the connecting flange is connected by a plurality of anchor bolts or bolts arranged in the wall thickness direction, the out-of-plane deformation of the web in the vertical frame material with the joining hardware itself In addition, it is possible to stop the rotation accompanying the above, and it is possible to obtain an effect that the joint metal can bear the axial force of the compression force and the tensile force.

According to joining hardware to be used for joining the structure of the bearing walls of the third aspect of the present invention, before Symbol joining hardware is over upwardly from below the bearing wall, it is formed by channel members which are arranged a plurality of parallel wall-thickness direction And a flange for joining having bolt insertion holes penetrating in the vertical direction at the upper end and the lower end of each of the channel members, so that the upper floor side joint hardware and the lower floor side joint hardware are It can be easily connected with bolts, nuts, etc., and effects such as stopping rotation can be obtained which acts when an out-of-plane bending deformation of the web on the vertical frame member side is caused by the joining hardware itself.

It is a cross-sectional top view which shows the joining structure of the wall panel of 1st Embodiment of this invention. It is a front view which abbreviate | omits and shows a part of joining structure of the wall panel shown in FIG. The load-bearing wall which consists of a wall panel of 1st Embodiment is shown, Comprising: (a) is a side view, (b) is sectional drawing. It is a cross-sectional top view which shows the joining structure of the wall panel of 2nd Embodiment of this invention. It is the sectional view on the aa line of the joining structure of the wall panel shown in FIG. It is a side view from the outdoor side of the joining structure of the wall panel shown in FIG. It is the cross-sectional top view cut | disconnected in the anchor bolt vicinity in FIG. The load-bearing wall which consists of a wall panel of 2nd Embodiment is shown, Comprising: (a) is a side view, (b) is sectional drawing. It is the schematic of the joining structure 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. (A) is the vertical side view which shows the joining structure of the wall panel of 3rd Embodiment of this invention, (b) is the cross-sectional plan view. The load-bearing wall which consists of a wall panel of 3rd Embodiment is shown, Comprising: (a) is a side view, (b) is sectional drawing. It is a figure for demonstrating that drawing force (tensile force) and pushing force (compression force) act when a horizontal force acts on a building. A conventional joint with a side-opening groove-shaped cross section in which the vertical frame material of the load-bearing wall on the upper floor side and the vertical frame material of the load-bearing wall on the lower floor side are mounted so that the position of the bolt can be fixed to the upper and lower parts thereof. It is the vertical side view joined by this. 13A and 13B are cross-sectional plan views of the joint structure shown in FIG. 13, in which FIG. 13A is a cross-sectional plan view near the female screw member screwed into the bolt, FIG. 13B 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 the schematic 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 a cross-sectional top view which shows the other form of the joining structure of a wall panel, (b) is a front view which abbreviate | omits and shows a part. It is explanatory drawing which shows the state in which the web of the vertical frame material in the junction structure of the conventional wall panel is bending-deforming, and the hole down metal fitting is rotating.

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

(First 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 cross-sectional plan view showing a wall panel joint structure according to a first embodiment of the present invention. 1 is a view showing the vicinity of the lower left portion shown in FIG. 3, and FIG. 2 is a view showing the vicinity of the lower right portion shown in FIG. In FIG. 1 to FIG. 3, a structure in which a load bearing wall 2 is fixed to a plurality of anchor bolts 1 or bolts 1 in a wall thickness direction X fixed to a foundation 10 such as a concrete foundation via a joint metal 3. It is shown.

  In FIG. 1 and FIG. 2, the one side part of the lower side of the load-bearing wall 2 which consists of wall panels, such as a front rectangular shape, is shown. The load-bearing wall 2 made of a wall panel made of steel or the like has left and right vertical frame members 4 made of channel steel, an upper horizontal frame material 5 and a lower horizontal frame material 5 made of channel steel, and the like. Are joined by welding or the like, and an intermediate horizontal frame member or intermediate vertical frame member is appropriately disposed in the intermediate portion, and its end is joined to the vertical frame member 4 or the upper and lower horizontal frame members 5 as a whole. A frame frame 15 having a rectangular shape or a rectangular shape as viewed from the front is provided.

  As shown in FIG. 1 and FIG. 2, the joining hardware 3 is made of a steel material, and a web 3 a provided in the vertical direction and a flange 3 b provided so as to extend from both ends in the wall thickness direction X of the web 3 a. And the flange 3 for joining provided in the lower end of the web 3a and the flange 3b can be provided. The metal joint 3 is screwed with a drill screw 20 by polymerizing the web 3a of the metal joint 3 on the inner surface of the web 8b of the inner vertical frame member 4b. The structural face material 7 is joined to the flange 9a of the outer vertical frame member 4a by a large number of drill screws 29 spaced in the vertical direction.

  As shown in FIGS. 1 and 2, the joint hardware 3 is provided with two bolt insertion holes 18 symmetrically at intervals in the wall thickness direction X, and the web 3 a is interposed between the two bolt insertion holes 18. Ribs 3c are provided so as to extend from the middle. The bolt insertion hole 18 is inserted with a plurality of anchor bolts 1 spaced in the wall thickness direction X of the foundation 10, and the female screw member 22 is screwed into the anchor bolt 1. Can be erected. Since a plurality of anchor bolts 1 are inserted in the wall thickness direction X, the metal joint 3 can enable the strength wall 2 to be joined with high strength.

  Furthermore, as shown in FIG. 2, the metal joint 3 can be fixed to the foundation 10 via the horizontal frame member 5. As a result, the joint metal 3 is less likely to be bent out of plane of the web 8 of the vertical frame member 4 seen in FIG. 17, and the drill screw 29 is prevented from being pulled out by this out of plane bending, and the high strength of the bearing wall 2. Can be joined.

  Further, in the joint structure of the load bearing wall 2 in which the anchor bolt 1 or the bolt 1 and the vertical frame member 4 are fixed via the joint metal fitting 3 using a thin lightweight steel for the vertical frame member 4 of the bearing wall 2, Since a plurality of anchor bolts 1 or bolts 1 are arranged at intervals in the wall thickness direction X orthogonal to the structural face material 7 attached to at least one side of the wall 2, high strength joining of the load bearing wall 2 with a simple structure Is possible.

(Second Embodiment)
Next, with reference to FIGS. 4-7, the joining structure of the load-bearing wall which consists of the wall panel of 2nd Embodiment of this invention is demonstrated.

  4 and 7 are cross-sectional plan views showing the wall panel joint structure according to the second embodiment of the present invention, and correspond to the cross-sectional plan views of FIGS. 5 and 6. 4 to 7 are diagrams showing the vicinity of the lower left portion shown in FIG. 4 to 7, a structure in which the bearing wall 2 is fixed to the plurality of anchor bolts 1 or the bolts 1 in the wall thickness direction X fixed to the foundation 10 such as a concrete foundation via the joint hardware 3. It is shown.

  4-7, the one side part of the lower side of the load-bearing wall 2 which consists of wall panels, such as a front rectangular shape, is shown. 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 rectangular or rectangular outer shape.

  The load-bearing wall 2 made up of the above-mentioned wall panels is a building, in particular 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 structural surface material 7 In the case of the load-bearing wall 2 used in a steel-based panel structure or a wooden house, and the thickness of the vertical frame member 4 in the load-bearing wall 2 is, for example, 2.3 mm or more other than the above dimensions. For example, 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 shape steel having a thickness of 4.5 mm or the like are used.

  The structural face material 7 installed on the load-bearing wall 2 made of a wall panel is a face material provided on at least one side of the wall panel, and on the outdoor side, a folded plate or the like as shown in the figure. A structural face material 7 made of a steel plate is provided, and on the indoor side, a structural face material 7 made of a non-metallic material such as plywood or gypsum board is provided.

  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. 4, steel square steel (square pipe) having a hollow rectangular cross section is arranged in parallel with a plurality of (two in the illustrated case) parallel to the wall thickness direction X with one side of the square steel abutting, Both ends of the one side are joined by welding at the corners to form the outer vertical frame member 4a, and the web 8b in the inner vertical frame member 4b made of channel steel with a cross-sectional lip is connected to the outer vertical frame member 4a. In contact with the web 8a, the web 8b of the inner vertical frame member 4b and the web 8a of the outer vertical frame member 4a are joined by a number of drill screws 29 spaced apart in the vertical direction and spaced in the wall thickness direction X. Thus, the vertical frame member 4 is formed. When the drill screw 29 is installed closer to the flange 9b than the web 8b in the inner vertical frame member 4b, the out-of-plane deformation of the web 8b in the inner vertical frame member 4b is installed closer to the center. In comparison, it is made to hardly occur.

  The inner vertical frame member 4b is an inner vertical frame member 4b made of grooved steel with a lip. The web 8b of the inner vertical frame member 4b is arranged in the wall thickness direction X, and the inner vertical frame member 4b is made of grooved steel with a lip. The flange 9b of the frame member 4b is arranged as a short side on both sides in the wall thickness direction X, and the outer surface of one flange 9a of the outer vertical frame member 4a is the same as the outer surface of one flange 9b of the inner vertical frame member 4b. It is assumed to be planar.

  The metal fitting 3 is inserted from the axial direction of the inner vertical frame member 4b into the groove formed by the web 8b of the inner vertical frame member 4b and each flange 9b, and is close to the web 8b of the inner vertical frame member 4b. As shown, it is arranged closer to the web 8b.

  The joint hardware 3 is made of a steel material, includes a cylindrical body 6 whose horizontal cross-sectional shape is a rectangle having a long side in the wall thickness direction X, and an inner vertical frame member whose short side is an opposing flange 9b. 4b is arranged near the web 8b of the inner vertical frame member 4b so that the flange 6a of the short side of the rectangular tubular body 6 overlaps with the inner surface of the flange 9b in 4b, and each short side (flange 6a ) And the respective short sides (flange 9b) of the vertical frame member 4 are screwed by drill screws 20, respectively. In the illustrated form, as the structural face material 7, a trough flange of a steel folded plate arranged on the outdoor side is brought into contact with one surface of the vertical frame member 4, and the tubular shape of the steel folded plate and the joint hardware 3 is formed. The body 6 is joined to the flange 9b of the inner vertical frame member 4b by a number of drill screws 20 spaced in the vertical direction and spaced in the left-right direction. Since the cylindrical body 6 is disposed closer to the web 8b of the inner vertical frame member 4b, the bending force is reduced as compared with the case where the end of the flange 9b of the inner vertical frame member 4b is joined by the drill screw 20. Has been.

  A plurality of (two in the illustrated example) inner cylinders having a circular or rectangular cross-section are disposed on the inner side of the rectangular cylindrical body 6 in plan view in the joint metal piece 3 with a spacing in the wall thickness direction X and closer to the center. The cylindrical bodies 6c are arranged symmetrically and are fixed to the cylindrical body 6 by welding W or the like. The height dimension in the vertical direction of the rectangular tubular body 6 in plan view and the height dimension in the vertical direction of the inner cylindrical body 6c are the same length dimension. The lower horizontal frame member 5 is installed at the lower end of the vertical frame member 4 provided with the cylindrical member 6 having the inner cylindrical members 6c at the lower part (or both the lower part and the upper part), and the vertical The frame-shaped frame 15 is configured by installing the upper horizontal frame material 5 at the upper end of the frame material 4. Also, a plurality of vertical through holes for inserting bolts or a plurality of bolts 1 spaced in the wall thickness direction X can be inserted into the lower horizontal frame member 5 corresponding to each inner cylindrical body 6c. A vertical through hole is provided so that the anchor bolt 1 or the bolt 1 can be inserted.

  The lower female screw member 12 and the locking washer attached to the anchor bolt 1 are inserted into the lower horizontal frame member 5 together with the upper end portion of the anchor bolt 1. Next, only the upper end portion of the anchor bolt 1 is inserted into the lower washer 42 across the opposing web 3a of the cylindrical body 6, and the lower female member 12 and the locking stopper washer are inserted into the lower horizontal frame member 5 and the lower washer. 42. Further, the lower female screw member 12 and the locking washer are fixed by fixing the cylindrical body 6 with the lower washer 42 separated from the lower horizontal frame member 5 by screwing the lower female screw member 12. The load bearing wall 2 made of a wall panel provided with the frame member 5 and the inner cylindrical bodies 6c is placed on the foundation 10. In the cylindrical body 6, the upper end portion of the anchor bolt 1 is inserted into the upper washer 42 across the web 3 a facing the cylindrical body 6, and the upper female screw member 11 is screwed into the upper end portion of the anchor bolt 1. Thereby, the load-bearing wall 2 made of the wall panel is erected in a state where the washer 42 of the cylindrical body 6 is fixed from above and below by the upper female screw member 11 and the lower female screw member 12. The lower and upper washers 42 across the opposing web 3a of the cylindrical body 6 can be rotated by providing a leg portion that engages with the outer surface or inner surface of the opposing web 3a of the cylindrical body 6. The stop washer 42 may be used, or the two washers 42 may be integrated to form the rotation washer 42.

  The yield strength of the joint metal 3 is lower than the yield strength of the plurality of anchor bolts 1, and the joint metal 3 is deformable while maintaining the yield strength. As a result, the plasticized parts are concentrated in the metal joint 3, so that the reuse of the building after a large earthquake may be merely replacement of the metal joint 3. In addition, about the specific shape of the joining metal fitting 3, it is also effective to provide an attenuation part by the process etc. which form the slit hole of various shapes in the side surface of the cylindrical body 6. FIG.

  Although not shown, the concrete foundation 10 in the second embodiment is replaced with a beam or eaves beam on the end face side, and the anchor bolt 1 is sufficiently passed over the joint metal 3 of the bearing wall 2 on the upper and lower floors. If it replaces with the volt | bolt 1 of length and it provides two joining hardware 3 at intervals between upper and lower floors, the joining structure which joins the bearing wall 2 of the upper floor side, and the bearing wall 2 of the lower floor side mutually become.

  In such a case, the upper joint metal 3 is installed on the upper part of the vertical frame member 4 in the load-bearing wall 2 made of the wall panel, and the upper joint member 3 on the side of the horizontal frame member is installed as in the above embodiment. A vertical through hole for inserting a bolt is provided in the upper horizontal frame member 5 at a position corresponding to each inner cylindrical body 6c in the above, and bolts are similarly inserted into the upper and lower flanges of the beam in the floor panel 13 (see FIG. 9). By providing the vertical through-holes, it is possible to join the load-bearing wall 2 made of the upper-floor side wall panel and the load-bearing wall 2 made of the lower-floor side wall panel. In such a case, the tensile force and the compressive force can be transmitted to the lower floor side or the upper floor side by interposing the floor panel 13 or the independent compression reinforcement hardware 14 and the reinforcement plate. As shown in FIG. 9, the shear restraint anchor 47 may be erected on the foundation 10 to restrain the movement of the horizontal frame member 5 below the bearing wall 2.

  Further, the flanges 6a of the cylindrical body 6 that is rectangular in plan view, even if a tensile force acts on the inner vertical frame member 4b of the vertical frame member 4, the web 8 of the vertical frame member 4 including the inner vertical frame member 4b. However, there is no deformation in the out-of-plane direction on the side of the joint metal 3, and therefore there is no possibility that the joint metal 3 will rotate in the out-of-plane direction, so that the drill that joins the joint metal 3 and the vertical frame member 4. The possibility that the screw 20 is pulled out can be eliminated, and a joint structure with high yield strength can be obtained. The metal fitting 3 is incorporated in each vertical frame member 4 of the load bearing wall 2 in advance in a factory or the like.

  In this way, in the joint structure of the load bearing wall 2 in which the anchor bolt 1 or the bolt 1 and the vertical frame member 4 are fixed via the joint hardware 3 using the thin lightweight steel for the vertical frame member 4 of the bearing wall 2, Since a plurality of anchor bolts 1 or bolts 1 are arranged at intervals in the wall thickness direction X orthogonal to the structural face material 7 attached to at least one side of the load bearing wall 2, the structure of the load bearing wall 2 can be increased with a simple structure. Strength bonding is possible.

  When a plurality of anchor bolts 1 or bolts 1 are arranged as in the above embodiment, the distance from the longitudinal center axis to the bolt 1 in the wall thickness direction X in the load bearing wall panel 24 composed of the load bearing walls 2 is made equal. In addition, by similarly setting the upper and lower floors, the stress 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. Further, since the flange 3b of the joint metal 3 is screwed to the flange 9b of the vertical frame member 4, both ends of the joint metal 3 in the wall thickness direction X are constrained, and the drill screw 20 may be pulled 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.

(Third embodiment)
FIG. 10 shows a joint structure of load-bearing walls made up of wall panels according to the third embodiment of the present invention, and FIG. 11 shows the load-bearing wall 2. In this embodiment, the joining hardware 3 provided on the vertical frame member 4 in the bearing wall 2 is mainly different.

  In this third embodiment, each of the vertical frame members 4 on both the left and right sides of the bearing wall 2 is a single steel square pipe, and a rectangular steel square pipe whose horizontal section has a long side in the wall thickness direction X. It is said that. A metal joint 3 made of a groove-shaped member such as a plurality of groove-shaped steels is fixed to the web 8 in each vertical frame member 4 by a drill screw 20. The metal joint 3 composed of a plurality of channel members such as channel steels is arranged in parallel so that the flanges of the channel members such as channel steels are in contact with each other so that they are adjacent to each other. The web 3a of the metal joint 3 made of a groove-shaped member is fixed to the vertical frame member 4 by a number of drill screws 20 spaced in the vertical direction and spaced in the wall thickness direction X.

  The metal joint 3 made of a groove-shaped member such as each grooved steel forming the metal joint 3 is a length dimension from the base 10 to the lower surface of the floor panel 13 on the second floor, or from the lower floor panel to the upper floor. It is the length dimension to the lower surface of the floor panel, and is the height dimension of the load bearing wall 2 composed of a wall panel. The web 3a of the metal fitting 3 made of a groove-shaped member such as each groove-shaped steel has a number of drills spaced in the vertical direction and spaced in the wall thickness direction X over almost the entire length in the height direction. It is fixed by a screw 20.

  At the upper and lower end portions of the metal joint 3 made of a channel member such as each steel groove, a joint flange 17 fixed to the web 3a of the metal joint 3 and each flange 16 by welding or the like is horizontally attached. Each joining flange 17 is provided with a bolt insertion hole 18 for bolt insertion. The metal joint 3 is incorporated in the load bearing wall 2 in the same manner as in the above embodiment.

  In the same manner as in the above-described embodiment, the bearing wall 2 provided with such a joint metal 3 also includes a plurality of anchor bolts 1 spaced in the wall thickness direction X of the foundation 10 and each of the flanges 17 for each joint in the joint metal 3. The load bearing wall 2 is erected so as to be inserted into each of the bolt insertion holes 18, and the female screw member 22 is screwed into each anchor bolt 1, whereby the load bearing wall 2 formed of a wall panel can be erected on the foundation 10.

  In addition, the vertical through hole of the flanged connecting body 28 in the floor panel 13 is arranged so as to match the bolt insertion hole 18 of the lower-layer joint metal 3, and the lower flange 19 of the flanged connecting body 28 and the lower The upper joining flange 17 in the floor side metal fitting 3 is joined by a bolt / nut 23, and the bolt of the upper floor side metal fitting 3 is inserted into the vertical through hole of the upper flange 19 in the flanged connector 28. The upper floor side load bearing wall 2 is erected so that the insertion hole 18 matches, and the upper flange 19 in the flanged coupling body 28 and the lower joint flange 17 in the upper floor side joint fitting 3 are By joining with bolts and nuts 23, it can be built toward the upper floor. In addition, you may interpose the adjustment plate 27, such as a steel plate provided with the vertical through-hole suitably.

  In this 3rd Embodiment, the joining metal fitting 3 is provided with the shape steel of the height dimension for about one floor, is the same height dimension as the vertical frame material 4 in the load-bearing wall 2 which consists of a wall panel, It is arranged over the entire length of the web 8 and is joined by the drill screw 20 over the entire length of the vertical frame member 4 and the joint metal member 3, and the tensile force between the vertical frame member 4 and the joint metal member 3. In addition, the structure is such that the transmission of the compressive force is reliable and the stress is distributed and transmitted, and the vertical frame member 4 and the web 8 thereof are reinforced by the joint metal 3 using the shape steel. Therefore, when a horizontal force is applied during an earthquake or the like, even if a tensile force is applied to the web 8 of the vertical frame member 4, the web 3 a of the metal fitting 3 is bonded to the entire length thereof. The web 8 is constrained so as not to undergo out-of-plane deformation, can be sufficiently dispersed and transmitted to the joint metal 3, and the joint metal 3 itself also has a structure that exhibits a supporting force. As described above, in order to obtain a structure in which the metal joint 3 itself also exerts a supporting force, it is joined using a shape steel provided with a web 3a and a flange 3b having a plate thickness that is thicker than the plate thickness of the vertical frame member 4. It is better to use hardware 3.

  Further, the lower floor side joint hardware 3 and the foundation 10 are fixed by a plurality of anchor bolts 1, and the lower floor side joint hardware 3 and the upper floor side joint hardware 3 are connected to the floor panel 13 with a flange. Since it is firmly connected by a plurality of bolts and nuts 23 via the body 28, the joint hardware 3 itself integrated over the upper and lower floors has a structure that does not rotate, and is on the side of the vertical frame member 4 side. In addition to preventing out-of-plane deformation, the structure can resist a bending moment M (a structure capable of bearing a moment) when attempting to perform out-of-plane deformation on the vertical frame member 4 side.

  In addition, joining by the drill screw 20 in the said embodiment is joined by bearing joining. When the present invention is carried out, another screw joint may be used instead of the drill screw 20 described above.

DESCRIPTION OF SYMBOLS 1 Anchor bolt, bolt 2 Bearing wall 3 Joint metal 3a Web (joint metal 3)
3b Flange (for joint hardware 3)
3c rib (joint metal 3)
4 Vertical frame member 4a Outer vertical frame member 4b Inner vertical frame member 5 Horizontal frame member 6 Cylindrical body 6a Flange 6c Inner cylindrical body 7 Structural surface material 8 Web 8a Web (outside vertical frame member 4a)
8b Web (inner vertical frame member 4b)
9a Flange (outside vertical frame member 4a)
9b Flange (inner vertical frame member 4b)
DESCRIPTION OF SYMBOLS 10 Base 11 Upper female screw member 12 Lower female screw member 13 Floor panel 14 Compression reinforcement hardware 15 Frame-shaped frame 16 Flange 17 Joining flange 18 Flange connection body 19 Flange (of flange connection body 18)
20 Drill Screw 22 Female Thread Member 23 Bolt / Nut 24 Bearing Wall Panel 27 Adjustment Plate 28 Flanged Connector 29 Drill Screw 42 Washer 47 Shear Restraint Anchor Bolt

Claims (3)

For a structure that is attached to at least one side of the load bearing wall in a load bearing wall joint structure in which anchor bolts or bolts and the vertical frame member are fixed via a joint metal fitting using a thin lightweight steel shape for the vertical frame member of the load bearing wall. Place multiple anchor bolts or bolts in the wall thickness direction perpendicular to the face material ,
The joint hardware includes a cylindrical body whose horizontal cross-sectional shape is a rectangle having a long side in the wall thickness direction, and a short side of the rectangular cylinder is formed on the opposing flange inner surface on the short side of the vertical frame member. It is arranged so that the sides are superposed, each short side of the joint metal and each flange of the vertical frame member are screwed, respectively, and includes a plurality of inner cylindrical bodies that house and arrange the anchor bolts or bolts, A plurality of inner cylindrical bodies are arranged symmetrically near the center at intervals in the wall thickness direction on the inner side of the rectangular cylindrical body, and are fixed to the rectangular cylindrical body. Bearing wall joining structure. The yield strength of the joint hardware is lower than the yield strength of the plurality of anchor bolts and bolts, and the joint hardware is deformable while maintaining the yield strength . Bearing wall joint structure. For a structure that is attached to at least one side of the load bearing wall in a load bearing wall joint structure in which anchor bolts or bolts and the vertical frame member are fixed via a joint metal fitting using a thin lightweight steel shape for the vertical frame member of the load bearing wall. Place multiple anchor bolts or bolts in the wall thickness direction perpendicular to the face material,
The bonding hardware is formed by a web formed by a plurality of groove-shaped members arranged in parallel in the wall thickness direction from the lower side to the upper side of the load-bearing wall, and the upper and lower ends of the respective groove-shaped members. A joining flange having a bolt insertion hole penetrating in a direction, a web of the joining hardware is superposed on the web of the vertical frame member and screw joined, and the joining flange is arranged in a wall thickness direction. junction structure resistant force wall, characterized in that it is connected by anchor bolts or bolt.

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