JP6067438B2 - Wall panel mounting structure - Google Patents

Description

  The present invention relates to a wall panel mounting structure for fixing a wall panel to a horizontal member spanned between columns via a base steel material.

  Conventionally, there is JP 2000-96749 A as a technique in such a field. This publication discloses an attachment structure in which an ALC wall panel is attached to a beam joined to a prism. In this mounting structure, an ALC wall panel is mounted by applying an L-shaped mounting steel material to a joint between a prism and a beam.

  In the mounting structure described in Patent Document 1, a horizontal flange portion of a mounting steel material is welded to the upper surface of a beam that is H-shaped steel. Thereby, the steel material for attachment is fixed to the upper surface of the beam with sufficient strength.

JP 2000-96749 A

  By the way, in recent years, it has been desired to use a wooden cross beam for a beam to which a wall panel is attached. However, since the base steel material for attaching the wall panel cannot be welded to the wooden horizontal member, a configuration in which the base steel member is fastened to the horizontal member using screws is considered.

  On the other hand, since the wall panel is heavy, it is necessary to attach the base steel material while securing sufficient attachment strength to the horizontal member. In order to ensure a sufficient mounting strength in the configuration using screws, for example, the base steel material is fastened to the horizontal member using a plurality of screws. For this reason, it is necessary to form a plurality of screw through holes in the base steel material, and the length of the base steel material may become long. However, since the horizontal member is bridged between the columns, if the length of the base steel material is increased, the base steel material may interfere with the column.

  Therefore, the present invention has an object to provide a wall panel mounting structure capable of mounting a base steel material to a wooden horizontal material spanned between columns while ensuring the mounting strength to the horizontal material. And

  The present invention is a wall panel mounting structure in which a horizontal member is bridged between columns by a joint, and a wall panel is attached to the horizontal member via an L-shaped base steel material. The horizontal piece extends along the longitudinal direction of the wooden horizontal member and has a horizontal piece fixed to the horizontal member across the column. The horizontal piece includes a screw through hole to be attached to the horizontal member and sandwiches the column. The horizontal member fixing part provided on both sides and the notch part straddling the column, and the column escape part provided between the horizontal member fixing parts, are fixed in the longitudinal direction. The length of the part is longer than the notch.

  According to the above-described wall panel mounting structure, the long base steel material can be fixed to the horizontal member while avoiding interference with the pillar by straddling the pillar with the notch. Moreover, since the length of the horizontal member fixing part is longer than that of the notch part, a necessary number of screw through holes for securing the attachment strength can be provided in the horizontal member fixing part. Therefore, it is possible to attach the base steel material to the wooden horizontal material spanned between the columns while ensuring the attachment strength to the horizontal material.

Further, the length of the base steel material is 1 / integer of the interval between the columns.
Since the length of the base steel material is 1 / integer of the interval between the columns, the cutting work for adjusting the length of the base steel material becomes unnecessary at the construction site of the structure including the wooden horizontal member. . Therefore, the workability of the wall panel mounting structure can be improved. Furthermore, since the generation of sparks by cutting work for cutting the base steel material to a predetermined length is eliminated, work safety at the construction site can be improved.

In addition, the connector is fixed to the column by contacting the side surface of the column, and protrudes from the column mounting unit in the longitudinal direction of the horizontal member, and is inserted into a slit provided in the horizontal member to be horizontally mounted. A horizontal member attaching part fixed to the material, and a connecting part connected to the horizontal member fixing part of the base steel material is provided in the horizontal member attaching part.
When an out-of-plane force is applied to the wall panel due to an earthquake or a strong wind, a shearing force acts on the screw that fixes the base steel to the horizontal member. Since the horizontal member fixing portion of the base steel material is in contact with and connected to the connecting portion of the connector, a part of the out-of-plane force is transmitted to the connector. Accordingly, since the shearing force acting on the screw fixing the base steel material is reduced, damage to the screw due to excessive shearing force can be suppressed.

Further, the vertical piece of the base steel material is connected to the side surface of the column by a reinforcing member.
According to this mounting structure, part of the out-of-plane force is transmitted to the side surfaces of the columns connected by the reinforcing member. Therefore, since the shearing force acting on the screw fixing the base steel material is further reduced, it is possible to further suppress the screw damage due to the excessive shearing force.

  ADVANTAGE OF THE INVENTION According to this invention, the mounting structure of the wall panel which can attach base steel material with respect to the wooden horizontal material spanned between the pillars is ensured, ensuring the attachment strength with respect to a horizontal material.

It is a perspective view which shows the attachment structure of the wall panel which concerns on 1st Embodiment. It is sectional drawing of the attachment structure of the wall panel shown by FIG. FIG. 2 is a perspective view of the steel plate shown in FIG. 1. It is a top view of the attachment structure of a wall panel. It is the top view to which the pillar vicinity in FIG. 4 was expanded. It is a perspective view of the state before attaching a horizontal member to steel plates. It is a perspective view of the state which drives a drift pin. It is a perspective view of the state where the foundation steel material was fixed to the horizontal member. (A) is sectional drawing of the attachment structure of a wall panel, (b) is sectional drawing of the attachment structure of a wall panel when the force of an out-of-plane direction acts. (A) is sectional drawing which shows the state which the force of an out-of-plane direction acted on the attachment structure of the wall panel which concerns on a comparative example, (b) is the force of an out-of-plane direction on the attachment structure of the wall panel which concerns on this embodiment. It is sectional drawing which shows the state which acted. It is a top view which shows the attachment structure of the wall panel which concerns on 2nd Embodiment. It is sectional drawing of the attachment structure of the wall panel which concerns on 3rd Embodiment. It is a perspective view of the steel plate shown in FIG. It is a perspective view which shows the attachment structure of the wall panel which concerns on 4th Embodiment. (A) is sectional drawing which shows the state where the force of an out-of-plane direction acted on the attachment structure of the wall panel which concerns on a comparative example, (b) is the force of an out-of-plane direction on the attachment structure of the wall panel which concerns on a modification. It is sectional drawing which shows the state which acted.

  Hereinafter, a preferred embodiment of the wall panel mounting structure will be described in detail. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

[First Embodiment]
As shown in FIG. 1, the wall panel mounting structure 1 </ b> A is a structure in which wall panels P <b> 1 and P <b> 2 forming the outer wall of a building are mounted to a horizontal member 3 joined to a column 2 via a base steel material 4. Further, the terms “outside” and “inside” used in the description of the positional relationship between the parts correspond to the outside and inside of the building.

  The pillar 2 of the building is a wooden member and is installed at a predetermined interval in the horizontal direction (see FIG. 4). The distance between the columns 2 is 6 m as an example, and a steel plate (joining tool) 6 for attaching the horizontal member 3 to the columns 2 is fixed to the side surface 2 a of the columns 2.

  As shown in FIGS. 1 to 3, the steel plate 6 includes a column mounting portion 8 fixed in contact with the side surface 2 a of the column 2 by a plurality of lag screws 7, and a horizontal mount fixed to the horizontal member 3. It has the material attaching part 9 and the connection part 11 contact | abutted and connected with the base steel material 4. FIG.

  The column attachment portion 8 is a base portion of the steel plate 6 and has a rectangular flat plate shape extending in the vertical direction. The horizontal member mounting portion 9 is welded to the front surface 8a of the column mounting portion 8, and the back surface 8b is in contact with the side surface 2a of the column 2 (see FIG. 1). The column attachment portion 8 extends so that the upper end portion is positioned above the upper surface 3 a of the horizontal member 3, and the column fixing region 8 c where the surface 8 a is exposed from the horizontal member 3 and the lower end portion of the horizontal member 3. The column fixing region 8d extends so as to be positioned below the lower surface 3b and the surface 8a is exposed from the horizontal member 3. As shown in FIG. 3, each of the column fixing portions 8c and 8d is provided with four screw through holes 8e. The screw through hole 8e is for the lag screw 7 (see FIG. 2). A horizontal member mounting portion 9 is welded to the horizontal member contact region 8f between the column fixing portions 8c and 8d.

  The horizontal member attachment portion 9 protrudes from the surface 8 a of the column attachment portion 8 in the longitudinal direction L of the horizontal member 3. The horizontal member mounting portion 9 has a plate shape, and the height in the vertical direction is substantially equal to the height in the vertical direction of the horizontal member 3. The horizontal member mounting portion 9 is provided with four pin holes 9 a penetrating in the thickness direction of the horizontal member mounting portion 9. A connecting portion 11 that connects the base steel material 4 is welded to the side surface 9 b of the horizontal member attaching portion 9. The horizontal member 3 is attached to the horizontal member attachment portion 9 having such a configuration (see FIG. 1).

  The connecting portion 11 has an L-shaped cross section and extends along the longitudinal direction L of the horizontal member 3. The connecting portion 11 includes a vertical flange 12 welded to the side surface 9 b of the horizontal member attaching portion 9 and a horizontal flange 13 extending in the horizontal direction from the upper end portion of the vertical flange 12. The horizontal surface 13 a of the horizontal flange 13 is substantially the same height as the upper end surface 9 c of the horizontal member mounting portion 9. In addition, two screw through holes 13 b are juxtaposed on the horizontal flange 13 along the longitudinal direction L of the horizontal member 3.

  The horizontal member 3 will be described. The horizontal member 3 is a wooden beam in a wooden building. Here, the term “woody horizontal material” refers to a horizontal material made only of wooden material, a horizontal material in which the wooden material is assembled by means such as bonding or screwing, and steel materials such as H-shaped steel (gathered) Horizontal material covered with wood, and a multi-layered horizontal material with a non-woody (non-combustible) layer and a woody material (the outermost layer is made of non-woody material even if it is woody material) Horizontal materials with wooden materials protected by fire-resistant coating materials, horizontal structural materials with wooden materials covered with fire-resistant materials, and the fire-resistant materials covered with wooden materials (gathered) There is a horizontal member in which a main structural member made of a steel material such as an H-shaped steel is embedded in the center of the material.

  As shown in FIG. 4, the horizontal member 3 is arranged so as to be spanned between the pillars 2, one end is joined to the side surface 2 a of the pillar 2, and the other end is adjacent to the pillar 2. It is joined to the side surface 2 a of the column 2. At both ends of the horizontal member 3, column connecting portions 14 for connecting to the steel plate 6 are provided.

  As shown in FIG. 2, the column connection portion 14 of the horizontal member 3 includes a slit 14a into which the horizontal member attachment portion 9 of the steel plate 6 is inserted, a sleeve portion 14b sandwiching the slit 14a, and a steel plate. 6 includes a pin hole 14c for fixing the horizontal member 3 and a connecting portion arrangement surface 14d on which the connecting portion 11 is arranged.

  The slit 14a extends in the longitudinal direction L from the end surface 3c of the horizontal member 3 facing the pillar 2 (see FIG. 1), and at the approximate center in the width direction of the horizontal member 3, the upper surface 3a to the lower surface 3b of the horizontal member 3. It penetrates to. In the longitudinal direction L, the length of the slit 14 a is slightly longer than that of the horizontal member mounting portion 9. The width of the slit 14a is substantially equal to the total thickness of the plate thickness of the horizontal member mounting portion 9 and the plate thickness of the vertical flange 12 of the connecting portion 11 at the upper portion, and at the lower portion, the width of the horizontal member mounting portion. It is substantially equal to the plate thickness of 9. As described above, the steel plate 6 and the horizontal member 3 are joined to each other without a gap, so that when an out-of-plane force is applied to the horizontal member 3, the steel plate 6 and the horizontal member 3 are out of plane. Positional displacement in the direction can be suppressed.

  The sleeve portion 14b is provided with four pin holes 14c penetrating in the width direction of the horizontal member 3. This pin hole 14c penetrates in the horizontal direction from one side surface 3d of the horizontal member 3 to the other side surface 3e. Further, when the horizontal member mounting portion 9 is inserted into the slit 14a, the central axis of the pin hole 9a of the horizontal member mounting portion 9 is substantially coincident with the central axis of the pin hole 14c. A drift pin 16 is driven into the pin hole 14 c of the sleeve portion 14 b and the pin hole 9 a of the horizontal member attaching portion 9.

  A connecting portion arrangement surface 14d is provided on the outer sleeve portion 14b. The horizontal flange 13 of the connecting portion 11 is arranged on the connecting portion arrangement surface 14d, and is recessed by the thickness of the horizontal flange 13 of the connecting portion 11 from the upper surface 3a of the horizontal member 3 with which the base steel material 4 abuts.

  As shown in FIGS. 4 and 5, a base steel material 4 is attached to the upper surface 3 a of the horizontal member 3. The base steel material 4 that is an example of the mounting member is an L-shaped angle material made of steel, and is fixed to the horizontal member 3 across the column 2. The length of the base steel material 4 is set based on the interval between the columns 2. More specifically, the length of the base steel material 4 is 1 / integer of the interval between the columns 2. In the present embodiment, the ratio of the length of the base steel material 4 to the interval between the columns 2 is 1/1 (same size), and the interval between the columns 2 is 6 m, so the length of the base steel material 4 is also about 6 m. . The base steel material 4 includes a horizontal flange (horizontal piece) 17 fixed to the upper surface 3 a of the horizontal member 3 across the column 2, and a vertical flange (vertical piece) 18 erected vertically from the edge of the horizontal flange 17. And having.

  As shown in FIG. 4, horizontal member fixing portions 19 are provided on both sides of the pillar 2 of the horizontal flange 17. A column escape portion 21 is provided between the horizontal member fixing portions 19.

  As shown in FIG. 5, the horizontal member fixing portion 19 is provided with a screw through hole 23 (see FIG. 1) into which a lag screw 22 for attaching the base steel material 4 to the horizontal member 3 is inserted. . More specifically, a screw through hole 23 is provided in a portion of the horizontal member fixing portion 19 that contacts the upper surface 3 a of the horizontal member 3. The inner diameter of the screw through hole 23 is equal to the outer diameter of the neck portion of the lag screw 22. Four screw through holes 23 are juxtaposed along the longitudinal direction L of the horizontal member 3 in each horizontal member fixing portion 19 (see FIG. 4). The number of screw through holes 23 provided in the horizontal member fixing portion 19 is not limited to four, and four or more screw through holes 23 may be provided based on the required mounting strength. .

  The horizontal member fixing portion 19 is provided with a screw through hole 26 (see FIG. 1) into which a drill screw 24 for connecting the base steel material 4 to the steel plate 6 is inserted. More specifically, the screw through hole 26 is provided in a range where the horizontal flange 13 of the connecting portion 11 exists. The drill screw 24 is inserted into the screw through hole 26 and screwed into the horizontal flange 13 while tapping while drilling in the horizontal flange 13 exposed from the screw through hole 26.

  Here, in the longitudinal direction L, the length of the horizontal member fixing portion 19 is longer than the total length of the length of the steel plate 6 and the length necessary for providing the required number of screw through holes 23. Yes.

  The column escape portion 21 is provided between the horizontal member fixing portions 19 and substantially at the center in the longitudinal direction L of the base steel material 4. By providing the column escape portion 21 at substantially the center in the longitudinal direction L of the base steel material 4, the force acting on the lag screw 22 and the drill screw 24 can be made uniform. The column escape portion 21 includes a notch 27 that straddles the column 2. The length of the notch 27 along the longitudinal direction L is slightly longer than the width of the column 2. Further, the length of the cutout portion 27 in the longitudinal direction L is shorter than that of the horizontal member fixing portion 19. That is, the length of the horizontal member fixing portion 19 is longer than the cutout portion 27.

  The vertical flange 18 is erected upward from the edge of the horizontal flange 17 that protrudes outward from the side surface 3 e of the horizontal member 3.

  As shown in FIG. 2, a mounting bracket 28 is fixed to the vertical flange 18. An upper mounting portion 29 for mounting the upper panel P <b> 1 is provided on the upper portion of the mounting bracket 28. The upper panel P <b> 1 is fixed to the upper mounting portion 29 by a bolt 31 inserted into a bolt hole (not shown) provided in the upper mounting portion 29 and a nut 32 screwed into the bolt 31.

  A lower mounting portion 33 for mounting the lower panel P2 is provided at the lower portion of the mounting bracket 28. The lower panel P <b> 2 is fixed to the lower mounting portion 33 by a bolt 34 inserted into a bolt hole (not shown) provided in the lower mounting portion 33 and a nut 36 screwed into the bolt 34.

  Between the upper mounting portion 29 and the lower mounting portion 33, a flange fixing portion 38 for fixing the mounting bracket 28 to the vertical flange 18 of the base steel material 4 is provided. The flange fixing portion 38 is fixed to the vertical flange 18 by a bolt 39 inserted into a bolt hole (not shown) provided in the flange fixing portion 38 and a nut 41 screwed into the bolt 39.

  Further, a screw 42 is inserted into the flange fixing portion 38 as a rotation prevention process for the mounting bracket 28, and the flange fixing portion 38 is screwed to the vertical flange 18. By this anti-rotation process, the position in the rotation direction of the mounting bracket 28 around the bolt 39 is fixed, and as a result, the positions of the wall panels P1 and P2 are securely fixed.

  A self-weight bracket 43 is attached to the vertical flange 18. The self-weight bracket 43 has a vertical flange 44 fixed to the vertical flange 18 and a horizontal flange 46 extending in the horizontal direction. When the lower end surface of the upper panel P1 is in contact with the horizontal flange 46, the wall panel P1 is positioned in the vertical direction, and the weight of the wall panel P1 is supported by the weight receiving bracket 43.

  The wall panels P1 and P2 are, for example, ALC panels (Autoclaved Lightweight Aerated Concrete panels) having a height of 3000 mm, a width of 600 mm, and a thickness of 100 mm. The wall panel P1 and the wall panel P2 are arranged on the outer wall surface of the building. Adjacent up and down. In the wall panel mounting structure 1 </ b> A, the lower end portion of the upper panel P <b> 1 and the upper end portion of the lower panel P <b> 2 are fixed to the same horizontal member 3. In addition, the upper center part of the upper panel P1 is fixed to another horizontal member (not shown) located above the horizontal member 3, and the lower center part of the lower panel P2 is located in the lower part of the horizontal member 3. It is fixed to other horizontal members (not shown) or foundation rises (not shown).

  The construction method of the wall panel mounting structure 1A will be described. As FIG. 6 shows, it fixes to the side surface 2a of the pillar 2 using the lag screw 7 of the pillar attachment part 8 of the steel plate 6. As shown in FIG. As shown in FIG. 7, the horizontal member mounting portion 9 of the steel plate 6 is inserted into the slit 14 a of the horizontal member 3. Then, the horizontal member 3 is fixed to the steel plate 6 by driving the drift pin 16 into the pin hole 14 c of the horizontal member 3. The horizontal member 3 is joined to the side surface 2a of the column 2 by the above process. In addition, since the other edge part of the horizontal member 3 can be joined to another pillar 2 adjacent to the pillar 2 by the same process, detailed description is abbreviate | omitted.

  As shown in FIG. 8, the base steel material 4 is placed on the upper surface 3 a of the horizontal member 3. At this time, the base steel material 4 is arranged on the horizontal member 3 so that the notch 27 of the column escape portion 21 straddles the column 2. After temporarily fixing the base steel material 4 disposed on the horizontal member 3, a drill screw 24 is screwed into the horizontal flange 13 of the connecting portion 11 from a screw through hole 26 (see FIG. 1). Then, the lag screw 22 is screwed into the horizontal member 3 from the screw through hole 23 (see FIG. 1).

  After fixing the base steel material 4 to the horizontal member 3, the mounting bracket 28 to which the lower panel P <b> 2 is fixed is fixed to the base steel material 4 as shown in FIG. 2. Next, the screw 42 is inserted as a detent processing of the mounting bracket 28 with respect to the base steel material 4. Subsequently, the self-weight bracket 43 is fixed to the base steel material 4. Then, the lower end surface of the upper panel P1 is brought into contact with the horizontal flange 46 of the self-weight bracket 43, and the nut 32 is screwed onto the bolt 31 of the upper panel P1 to tighten the nut 32. Through the above steps, the wall panel mounting structure 1A is constructed.

  According to the wall panel mounting structure 1 </ b> A described above, the base steel material 4 is provided with the column escape portion 21 having the notch portion 27. Therefore, the long base steel material 4 can be fixed to the horizontal member 3 while avoiding interference with the pillar 2 by straddling the pillar 2 with the notch 27. Moreover, since the length of the horizontal member fixing portion 19 is longer than the length of the notch portion 27, the horizontal member fixing portion 19 can be provided with as many screw through holes 23 as necessary for securing the mounting strength. . Therefore, it is possible to attach the base steel material 4 to the wooden horizontal material 3 spanned between the columns 2 while securing the attachment strength to the horizontal material 3.

  In addition, since the length of the base steel material 4 is one-tenth of the interval between the columns 2, the length of the base steel material 4 is adjusted at the construction site of the structure including the wooden horizontal member 3. No cutting work is required. Therefore, the workability of the wall panel mounting structure 1A can be improved. Furthermore, since the generation of sparks due to the cutting work for cutting the base steel material 4 into a predetermined length is eliminated, the work safety at the construction site can be improved.

  By the way, when an out-of-plane force is applied to the wall panels P1 and P2 due to an earthquake or a strong wind, a shearing force is applied to the lag screw 22 fixing the base steel material 4 to the horizontal member 3. In particular, a very large shearing force is concentrated on the lag screw 22 closest to the column, and there is a possibility that the chain lag screw 22 may be sheared in order from the lag screw 22. According to the wall panel mounting structure 1A, since the horizontal member fixing portion 19 of the base steel material 4 is connected to the connecting portion 11 of the steel plate 6, a part of the force in the out-of-plane direction is applied to the steel plate 6. Communicated. Therefore, since the shearing force acting on the lag screw 22 fixing the base steel material 4 is reduced, damage to the lag screw 22 due to excessive shearing force can be suppressed.

  In the base steel material 4, the region where the column escape portion 21 is provided has lower out-of-plane rigidity than the region of the horizontal member fixing portion 19. Therefore, the out-of-plane rigidity of the base steel material 4 can be increased by connecting the horizontal flange 17 and the steel plate 6.

  As shown in FIG. 9A, when an out-of-plane force is applied to the wall panel P arranged in the vertical direction and attached to the horizontal member 3 due to an earthquake or the like, FIG. ), The wall panel P may be inclined with respect to the vertical direction.

  At this time, as shown in FIG. 10 (a), the out-of-plane rigidity of the vertical flange 48 is high in the mounting structure according to the comparative example in which the wall panel P is mounted by the base steel material 47 not provided with the notch 27. Therefore, the movement of the base steel material 47 and the mounting bracket 28 is very slight. Therefore, the force in the out-of-plane direction is particularly likely to concentrate on the bolt 31 that fixes the wall panel P to the mounting bracket 28, and the pulling load acting on the bolt 31 may increase. An excessive pulling load acts on the bolt 31, and the bolt 31 may be cut and the wall panel P may fall off.

  On the other hand, as shown in FIG. 10B, in the base steel material 4 of the present embodiment, the notch portion 27 is provided in the column escape portion 21. The out-of-plane rigidity of the vertical flange 18 is relatively low. A mounting bracket 28 is fixed to the portion of the vertical flange 18 having a relatively low out-of-plane rigidity. For this reason, when an out-of-plane force is applied to the wall panel P, the vertical flange 18 is relatively flexibly rotated and deformed in the out-of-plane direction, and a part of the out-of-plane force is absorbed. Therefore, according to the wall panel mounting structure 1A, when the force in the out-of-plane direction acts on the wall panel P due to an earthquake or the like, the base steel material 4 is flexibly deformed and easily follows, and thus acts on the bolt 31. The drawing load can be reduced. In this case, although the base steel material 4 is deformed, the pulling load acting on the bolt 31 is small, so that the cutting of the bolt 31 is suppressed. Accordingly, the wall panel P can be prevented from falling off.

[Second Embodiment]
As shown in FIG. 11, the wall panel mounting structure 1B of the second embodiment is different from the wall panel mounting structure 1A of the first embodiment in that the length of the base steel material 49 is shortened. doing. In 2nd Embodiment, the ratio of the length of the base steel material 49 with respect to the space | interval of the pillar 2 is set to 1/2 of the ratio. Assuming that the distance between the columns 2 is 6 m as an example, the length of the base steel material 49 is about 3 m. Another base steel material 51 is disposed between the base steel materials 49. The base steel material 51 is an L-shaped angle member, and the column escape portion 21 is not provided.

  Also in the wall panel mounting structure 1B of the second embodiment, the same effects as those of the wall panel mounting structure 1A of the first embodiment can be obtained.

[Third Embodiment]
As shown in FIGS. 12 and 13, the wall panel mounting structure 1 </ b> C of the third embodiment is connected to the steel plate 6 with respect to the wall panel mounting structure 1 </ b> A of the first embodiment. The difference is that 52 is welded. As shown in FIGS. 12 and 13, a connection nut 52 is welded to the side surface 9 b of the horizontal member mounting portion 9 of the steel plate 6. Further, the base steel material 4 fixed to the upper surface 3 a of the horizontal member 3 is connected to the steel plate 6 by screwing a bolt 53 to the connection nut 52.

  According to the mounting structure 1C of the third embodiment, since the base steel material 4 and the steel plate 6 are connected by the connecting nut 52 and the bolt 53, the connection strength between the base steel material 4 and the steel plate 6 is further increased. be able to. Accordingly, a part of the out-of-plane force acting on the base steel material 4 is reliably transmitted to the steel plate 6, so that the magnitude of the shear force acting on the lag screw 22 can be reliably reduced.

[Fourth Embodiment]
As shown in FIG. 14, the wall panel mounting structure 1D of the fourth embodiment is different from the wall panel mounting structure 1A of the first embodiment in that a reinforcing member 54 is provided. The reinforcing member 54 has an L-shaped cross-sectional shape, one end side is fixed to the vertical flange 18 of the base steel material 4 by a bolt 56 and a nut 57, and the other end side is fixed to the column 2 by the lag screw 7 and the steel plate 6. At the same time, it is fastened to the pillar 2 together. The bolt through hole (not shown) through which the bolt 56 is inserted is preferably a long hole extending in the longitudinal direction L. According to such a bolt through hole, the fixing position of the reinforcing member 54 can be adjusted in the horizontal direction.

  According to the mounting structure 1 </ b> D of the fourth embodiment, a part of the out-of-plane force is transmitted to the side surface 2 a of the column 2 connected by the reinforcing member 54. Therefore, since the shear force acting on the lag screw 22 fixing the base steel material 4 is further reduced, damage to the lag screw 22 due to excessive shear force can be further suppressed. Furthermore, by connecting the vertical flange 18 and the column 2 by the reinforcing member 54, the out-of-plane rigidity of the vertical flange 18 can be further increased.

  The present invention is not limited to the embodiment described above. The length of the base steel material 4 described above is 1/1 or 1/2 of the interval between the columns 2, but is not limited to these lengths. For example, the length of the base steel material 4 may be 1/3 or 1/4 of the interval between the columns 2.

  In addition, there may be a case where a space for arranging the mounting bracket 28 cannot be secured around the column 2 or a mounting bracket 28 cannot be mounted due to insufficient work space. In some cases, the mounting bracket 28 is not used for the purpose of labor saving and cost reduction. In these cases, the wall panel mounting structures 1 </ b> A to 1 </ b> D may be directly mounted on the base steel material 4 without the mounting bracket 28.

  However, as shown in FIG. 15A, when the wall panel P is attached to the base steel material 47 not provided with the notch 27, the out-of-plane rigidity of the base steel material 47 is high. 34 is expected to be subject to a drawing load. Furthermore, the drawing load acting on the bolt 34 increases as the thickness of the base steel material 47 increases and the rigidity increases.

  On the other hand, as shown in FIG. 15 (b), when the wall panel P is attached to the base steel material 4 having the notch 27, the vertical flange 18 can be rotated and deformed relatively flexibly. It is possible to reduce the pulling load acting on the.

DESCRIPTION OF SYMBOLS 1A-1D ... Wall panel mounting structure, 2 ... Column, 2a ... Side surface, 3 ... Horizontal member, 4 ... Base steel material, 6 ... Steel plate (joint), 8 ... Column attaching part, 9 ... Horizontal member Attached part, 11 ... connecting part, 14a ... slit, 17 ... horizontal flange (horizontal piece), 18 ... vertical flange (vertical piece), 19 ... horizontal member fixing part, 21 ... pillar escape part, 23 ... screw through hole, 27 ... Notch, 52 ... Connection nut, 54 ... Reinforcement member, L ... Longitudinal direction, P, P1, P2 ... Wall panel.

Claims (4)

In the mounting structure of the wall panel in which a horizontal member is bridged between the columns by a joint, and the wall panel is attached to the horizontal member via an L-shaped base steel material.
The base steel material has a horizontal piece that extends along the longitudinal direction of the wooden horizontal member and is fixed to the horizontal member across the pillar,
The horizontal piece is
Including screw through holes to be attached to the horizontal member, and horizontal member fixing portions provided on both sides of the pillar,
Including a notch portion straddling the column, and a column escape portion provided between the horizontal member fixing portions,
The wall panel mounting structure, wherein a length of the horizontal member fixing portion in the longitudinal direction is longer than that of the cutout portion.   The wall panel mounting structure according to claim 1, wherein a length of the base steel material is 1 / integer of an interval between the columns. The connector is
A column mounting portion fixed in contact with a side surface of the column;
A horizontal member mounting part that protrudes from the column mounting part in the longitudinal direction of the horizontal member and is inserted into a slit provided in the horizontal member and fixed to the horizontal member;
The wall panel mounting according to claim 1 or 2, wherein the horizontal member mounting portion is provided with a connecting portion that contacts and is connected to the horizontal member fixing portion of the base steel material. Construction. The wall panel mounting structure according to any one of claims 1 to 3, wherein the vertical piece of the base steel material is connected to a side surface of the column by a reinforcing member.

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