JP2020070613A - Exterior wall panel joint structure and building - Google Patents

Abstract

To provide an exterior wall panel joint structure capable of connecting a scaffold to a building frame even in a building in which the exterior wall panel is attached to the building frame by the rocking construction and has a structure which is designed so that it will not affect the layout of the exterior wall panel.SOLUTION: A joint structure 1 of exterior wall panels of a building 100 is provided, in which anchor members for connecting scaffolds can be connected and a fixing member 5 is fixed to the building frame, and in which multiple exterior wall-panels 3 constituting an exterior wall 2 are attached to a building frame 4 by the rocking construction. A fixing member 5 is positioned on a horizontal joint 11 between the exterior wall panels 3 placed in a vertical direction.SELECTED DRAWING: Figure 1

Description

  TECHNICAL FIELD The present invention relates to a joint structure of an outer wall slab and a building in a building including a fixing member for connecting a scaffold to a body of the building.

  Conventionally, a scaffold may be installed around a building to perform an outer wall construction work or the like. Then, in order to enhance the stability of the scaffold, a method is known in which the scaffold is connected to the building frame of the building via an anchor member for wall connection or the like.

  For example, Patent Document 1 discloses a wall joint mounting hardware for connecting an anchor member for wall joint to a building body of a building. The wall joint mounting hardware is provided with a hook portion capable of engaging with a steel column of a building on one end side and a connection portion capable of connecting an anchor member on the other end side.

  In addition, the wall joint mounting hardware allows the hook portion to engage with the steel column of the building through the vertical joint between the outer wall slabs that are adjacent to each other on the outer wall formed by a plurality of outer wall slabs (outer wall panels). The anchor member on the scaffolding side is connected to the connecting portion for use in a state where the connecting portion on the end side is projected outward from the vertical joint portion.

JP-A-5-340087

  However, it is premised that the wall joint mounting hardware described in Patent Document 1 is arranged in the vertical joint between the outer wall slabs that are adjacent to each other on the left and right. Therefore, for example, when the gap between the vertical joints between the adjacent outer wall plates on the left and right is small, or there is no gap, such as a building in which each outer wall plate is attached to the frame by the rocking construction method, it can be used. Have difficulty.

  In addition, the installation interval of the wall joint mounting hardware is set within a predetermined range from the viewpoint of securing the strength of the scaffold. Since the wall joint mounting hardware of Patent Document 1 is arranged in the vertical joints between the outer wall slabs that are adjacent to each other on the left and right, the positions of the vertical joints must be adjusted to the above-mentioned predetermined installation interval. Allocation may be affected.

  Therefore, the present invention makes it possible to connect the scaffolding to the skeleton even in a building in which the outer wall slab is attached to the skeleton by the rocking construction method, and the construction of the outer wall slab joint structure and the building in which the allocation of the outer wall slab is less likely to occur The purpose is to provide.

The present invention, a plurality of outer wall slabs constituting the outer wall is attached to the skeleton by a locking construction method, in a building in which a fixing member capable of connecting an anchor member for scaffolding connection is fixed to the skeleton, joints of the outer wall slab Structure,
It is characterized in that the fixing member is arranged at a lateral joint between the outer wall plates arranged above and below.

  In the joint structure of the outer wall slab of the present invention, only one of the outer wall slabs located above or below the fixing member is provided with a notch for arranging the fixing member. Is preferred.

  Further, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member is eccentrically arranged below the center of the joint width of the lateral joint portion.

  Further, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member is arranged at a central portion of the lateral width of the outer wall slab.

  Further, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member has a female screw capable of connecting the anchor member.

  Further, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member is fixed to a lower surface side of an upper flange of a beam forming the skeleton.

  Further, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member is arranged such that a tip of the fixing member is exposed on a surface of the outer wall.

  Further, the building of the present invention is characterized by including a joint structure of any of the outer wall plates described above.

  According to the present invention, it is possible to connect the scaffolding to the skeleton even in a building in which the outer wall slab is attached to the skeleton by the rocking construction method, and the layout of the outer wall slab and the building are made so that the allocation of the outer wall slab is unlikely to occur. Can be provided.

FIG. 3 is a vertical cross-sectional view showing the joint structure of the outer wall slab as one embodiment of the present invention. It is a front view of the joint structure of the outer wall plate of FIG. It is a top view which shows an example of a fixing member. It is a side view of the fixing member of FIG.

  An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same reference numerals are given to common configurations in the respective drawings.

  FIG. 1 is a vertical cross-sectional view (longitudinal sectional view) showing a joint structure 1 of an outer wall slab in a building 100, and FIG. 2 is a front view of the joint structure 1 of the outer wall slab viewed from the outside of the building 100. is there.

  Here, the overall configuration of the building 100 as an example will be described. The building 100 can be, for example, a two-story house having a steel frame. The building 100 is composed of a foundation structure fixed to the ground and an upper structure fixed on the foundation structure.

  The foundation structure is located below the upper structure and supports the framework thereof, and can be, for example, a reinforced concrete fabric foundation having a T-shaped cross section. The upper structure is a skeleton (frame) composed of a plurality of pillars and a plurality of beams 4 installed between the pillars, an outer wall 2 arranged on the outer peripheral side of the body, and a beam 4 constituting the body. The floor and the roof of each floor arranged above.

  The building 100 includes an outer wall 2 (outer peripheral wall) that surrounds the outer periphery of the building 100, and the outer wall 2 is configured by arranging a plurality of panel-shaped outer wall slabs 3 in series. Each outer wall slab 3 is attached to the skeleton by a locking construction method. That is, each outer wall slab 3 is configured to be capable of swinging left and right with respect to the skeleton due to displacement between layers and the like.

  Here, as a specific example of the outer wall slab 3, for example, a panel of lightweight cellular concrete (hereinafter referred to as “ALC”. “ALC” is an abbreviation of “autoclaved light weight concrete”) and a PC concrete panel. , And an extrusion-molded cement board can be used, but the specific configuration such as the material and shape of the outer wall slab 3 is not particularly limited as long as it can be attached to the body by the locking construction method. The outer wall 2 as the outer skin layer can be formed by connecting the outer wall slab 3 to the outer peripheral side of the beam 4, the column or the like as the structural member constituting the skeleton. The horizontal joints 11 between the outer wall slabs 3 arranged vertically and the vertical joints 12 between the left and right outer wall slabs 3 are respectively provided with sealings 13 and 14 (see FIG. 2).

  In this example, the gap between the outer wall plates 3 adjacent to each other on the left and right (the gap between the outer wall plates 3 formed at the joint bottom of the vertical joint portion 12) is 1 mm, and the outer wall plates 3 arranged vertically are The gap between them (the gap between the outer wall plates 3 formed at the joint bottom of the lateral joint portion 11) is 15 mm, but the size of each gap can be appropriately changed. Further, in this example, the joint width of the vertical joint portion 12 is 17 mm, and the joint width of the horizontal joint portion 11 is 20 mm. The "joint width" does not mean the width of the joint bottom, but the so-called "sealing width", that is, the maximum width of the range in which the seals 13 and 14 are applied to the joint portions 11 and 12.

  As shown in FIG. 1, the building 100 includes a beam 4 as a structural member that supports the outer wall slab 3 and constitutes a skeleton, and a fixing member 5 to which an anchor member for connecting a scaffold to the skeleton can be connected. ..

  The beam 4 is arranged along the outer wall 2 that surrounds the outer periphery of the building 100, extends in the horizontal direction, and is supported by a plurality of columns. The beam 4 of this example is made of an H-shaped steel having a web 4a and an upper flange 4b and a lower flange 4c which are respectively connected to the upper and lower ends of the web 4a. The shape and material of the beam 4 can be changed appropriately.

  The upper flange 4b and the lower flange 4c of the beam 4 are formed with a plurality of through holes for passing the bolts 7 and the like. The support member 6 is fixed to the upper surface of the upper flange 4b by fastening members such as bolts 7 and nuts 8.

  The support member 6 of this example is a long member made of a plate-shaped steel material welded to have a T-shaped cross section, and is arranged along the extending direction of the beam 4. The support member 6 of this example extends so as to support the entire lateral width (horizontal length) of the outer wall plate 3 from below. The support member 6 does not necessarily have to be a long member that supports the entire lateral width of the outer wall plate 3, and may have a configuration in which a plurality of support members having a shorter length than the lateral width of the outer wall plate 3 are used. In that case, for example, a plurality of support members may be arranged at intervals with respect to one outer wall plate 3 to support the outer wall plate 3.

  As shown in FIGS. 1 and 2, the support member 6 of the present example has a horizontal plate portion 6a extending in the horizontal direction, and a vertical plate portion 6b standing upright from the upper surface of the horizontal plate portion 6a. A portion of the horizontal plate portion 6a on the indoor side of the vertical plate portion 6b is placed on the upper surface of the upper flange 4b and fastened and fixed to the upper flange 4b. A portion of the horizontal plate portion 6a on the outdoor side of the vertical plate portion 6b abuts the lower surface of the outer wall plate 3 to support the outer wall plate 3 from below. Further, the vertical plate portion 6b is applied to the surface of the outer wall plate 3 on the indoor side, and is fastened with a fastening member such as a bolt in a state in which the outer wall plate 3 can be rocked (swing) with respect to the support member 6. To be done. That is, the outer wall plate 3 is configured so as not to move in the thickness direction of the outer wall plate 3 with respect to the support member 6.

  A fixing member 5 is fixed to the beam 4 by fastening members such as bolts 7 and nuts 8. Here, as shown in FIGS. 3 and 4, the fixing member 5 of this example includes a plate-shaped fixing portion 5a that is fastened and fixed to the beam 4, and a cylindrical connecting portion having an internal thread on the inner peripheral surface thereof. 5b and. Through holes 5c for passing the bolts 7 and the like are formed at two locations in the fixed portion 5a. In addition, the fixed portion 5a is formed with bent portions 5d and 5e for arranging the connection portion 5b at a predetermined height. By adjusting the height with the bent portions 5d and 5e, the connection portion 5b is fixed to the lateral joint portion of the outer wall slab 3 in a state where the fixing portion 5a is fixed to the frame (in this example, the lower surface of the upper flange 4b of the beam 4). It is arranged at a predetermined height of 11. The fixing member 5 may be a metal member (metal), but the material is not particularly limited, and may be resin or the like as long as it has appropriate rigidity.

  The connecting portion 5b has a configuration capable of connecting an anchor member for connecting the scaffold to the body, and in the case of this example, the anchor member includes a male screw that is screwed into the female screw of the connecting portion 5b. Note that a male screw may be provided on the connecting portion 5b side and a female screw may be provided on the anchor member side. Further, the connection between the fixing member 5 and the anchor member is not limited to the connection method by the screw connection between the male screw and the female screw, and may be a configuration using another connection method. Further, the shape of the fixing member 5 can be appropriately changed. For example, the entire fixing portion 5a may be formed into a flat plate shape without providing the bent portions 5d and 5e, or the position and angle of the connecting portion 5b with respect to the fixing portion 5a. It is also possible to change etc.

  As shown in FIG. 1, the fixing member 5 extends from the beam 4 located on the indoor side of the outer wall 2 to the surface of the outer wall 2 through the gap of the lateral joint portion 11 between the outer wall plates 3 arranged above and below. Existence That is, the fixing member 5 is arranged in the lateral joint portion 11 between the outer wall plates 3 arranged above and below, and penetrates the outer wall 2 in the thickness direction, and the tip of the connecting portion 5b is the surface of the outer wall 2. Is exposed to. Further, the fixing member 5 of this example is arranged such that the axis A of the connecting portion 5b extends in the horizontal direction and also extends perpendicularly to the outer wall 2 (outer wall slab 3) in a plan view. It Further, in this example, a cutout portion 15 for disposing the fixing member 5 is formed in the outer wall plate 3 located below the fixing member 5. Further, the fixing member 5 of this example is arranged below the support member 6.

  Further, as shown in FIGS. 1 and 2, on the surface of the outer wall slab 3, a concave sealing pocket 16 (spotted portion) is formed around the connection portion 5b of the fixing member 5. The sealing pocket 16 is filled with a sealing agent (gap filler) to form the sealing 17. As a result, the gap between the fixing member 5 and the outer wall slab 3 can be closed to ensure the airtightness and waterproofness of the outer wall 2. The sealing pocket 16 can be circular in front view as shown in FIG. 2, for example, but the sealing pocket 16 is not limited to this and may have another shape.

  Further, in this example, the fixing member 5 is fixed to the beam 4 by using the bolt 7 and the nut 8 that fix the supporting member 6 to the beam 4. That is, in this example, the bolt 7 shown in FIG. 1 is fastened in a state in which the horizontal plate portion 6a of the support member 6, the upper flange 4b, and the fixing member 5 are collectively penetrated. In this way, the support member 6 and the fixing member 5 are collectively fastened and fixed to the beam 4 by using the common fastening member, so that the number of fastening members to be used can be reduced.

  As described above, in this embodiment, the fixing member 5 fixed to the beam 4 is arranged in the lateral joint portion 11 between the outer wall plates 3 arranged vertically. Then, by connecting the anchor member for connecting the scaffold to the connecting portion 5b of the fixing member 5 exposed on the surface of the outer wall 2, the scaffold can be connected to the frame (beam 4). As described above, in the present embodiment, the scaffold can be easily connected to the skeleton by using the fixing member 5 arranged in the lateral joint 11.

  In addition, in the case of the outer wall 2 of the rocking construction method, basically, between the outer wall slabs 3 (of the horizontal joints 11) arranged above and below the gap (of the vertical joints 12) between the outer wall slabs 3 adjacent to each other on the left and right. The gap is larger. Therefore, by arranging the fixing member 5 in the lateral joint portion 11 between the outer wall slabs 3 arranged vertically as in the present embodiment, a notch formed in the outer wall slab 3 for arranging the fixing member 5. The part 15 can be made at least small, and in some cases, the cutout part 15 can be eliminated. That is, it is possible to reduce the amount of scraping of the outer wall plate 3 for disposing the fixing member 5.

  Further, in the present embodiment, the joint width of the lateral joint portion 11 is larger than the joint width (sealing width) of the vertical joint portion 12. Therefore, by disposing the fixing member 5 in the lateral joint portion 11, it is possible to reduce the cutting amount of the outer wall plate 3 for forming the sealing pocket 16. As a result, not only the labor required for construction can be reduced, but also the deterioration of the design of the outer wall 2 due to the cutting of the outer wall plate 3 can be suppressed.

  Further, in the present embodiment, since the fixing member 5 does not largely project from the outer wall 2, it is not necessary to remove the fixing member 5 after construction, and the fixing member 5 can be re-installed when repairing or maintaining the building 100. It can be used as it is. Further, by forming the connecting portion 5b for connecting the anchor member with the female screw structure, it can be arranged so as to be embedded in the outer wall slab 3 and the amount of protrusion from the surface of the outer wall slab 3 can be reduced. Furthermore, by making the connecting portion 5b have a female screw structure, it is possible not to project from the surface of the outer wall plate 3. Further, since the connecting portion 5b has the internal thread structure, the sealing agent is less likely to adhere to the thread groove (thread) when the sealing pocket 16 is filled with the sealing agent, as compared with the case where the connecting section 5b has the external thread structure. Further, if the screw hole of the connection portion 5b is closed with a detachable lid or the like, it is possible to more reliably prevent the sealing agent from entering the screw hole. Furthermore, by closing the screw hole of the connection portion 5b with the lid after the construction, it is possible to prevent dust and the like from entering the screw hole. Then, when connecting the anchor member again when repairing the building 100, the lid may be removed from the connecting portion 5b and used.

  Further, since the fixing member 5 is arranged in the lateral joint portion 11, the allocation of the outer wall slab 3 is less likely to be affected as compared with the case of the vertical joint portion 12. That is, since the fixing member 5 is arranged on the lateral joint portion 11, the fixing member 5 can be easily arranged at a predetermined installation interval determined in order to secure the strength and stability of the scaffold.

  As described above, according to the present embodiment, the scaffolding can be connected to the skeleton in the building 100 in which the outer wall slab 3 is attached to the skeleton by the rocking construction method, and the outer wall slab that is less likely to affect the allocation of the outer wall slab 3 The joint structure 1 and the building 100 can be provided.

  Further, according to the joint width of the lateral joints 11 between the upper and lower outer wall plates 3 and the conditions such as the thickness of the fixing member 5, the outer wall plate 3 is provided with the fixing member 5 as in this example. A notch 15 for placement may be formed. When the cutout portion 15 is provided, the fixing member 5 is disposed close to the upper or lower outer wall slab 3 and only one of the outer wall slabs 3 located above or below the fixing member 5 is provided with the cutout portion 15. Are preferably formed. With such a configuration, it is possible to reduce the time and effort required to cut out the outer wall slab 3 by cutting or the like. The cutout portions 15 may be provided on both the outer wall slabs 3 located above and below the fixing member 5.

  Further, as shown in FIG. 1, the fixing member 5 of the present example is arranged eccentrically below the line C which is the center of the joint width of the lateral joint portion 11. That is, the fixing member 5 of this example is arranged such that the axis A of the connecting portion 5b of the fixing member 5 is located below the center line C of the joint width of the lateral joint portion 11. With such a configuration, the cutout amount of the outer wall plate 3 above the fixing member 5 for forming the sealing pocket 16 is smaller than the cutout amount of the outer wall plate 3 below the fixing member 5. .. As a result, when the ceiling pocket 16 is looked up from the lower side of the building 100, it becomes inconspicuous, and it is possible to suppress the deterioration of the design of the appearance due to the ceiling pocket 16. That is, the sealing pocket 16 provided above the fixing member 5 is conspicuous because it becomes a shadow when looking up from below, and it is easy to impair the design of the external appearance. By making it smaller than the sealing pocket 16 on the side, it becomes inconspicuous and deterioration of appearance can be prevented.

  Here, the position of the fixing member 5 is not particularly limited as long as it is arranged in the lateral joint portion 11, but as shown by the solid line in FIG. 2, the fixing member 5 is arranged in the central portion of the lateral width of the outer wall slab 3. Preferably. With such a configuration, it is possible to reduce the load on the ceilings 13 and 17 during locking. That is, since the amount of displacement at the time of locking is smaller in the central portion than in the lateral end portions of the lateral width of the outer wall plate 3, by disposing the fixing member 5 at the central portion, the fixing member 5 and the outer wall at the time of locking can be reduced. The relative displacement with respect to the plate 3 can be reduced. As a result, it is possible to reduce the load on the ceilings 13 and 17 located between the fixing member 5 and the upper and lower outer wall plates 3.

  The fixing member 5 may be arranged at the intersection of the horizontal joint portion 11 and the vertical joint portion 12, as indicated by a chain double-dashed line in FIG. In this case, the amount of cutting for forming the notch 15 and the sealing pocket 16 can be further reduced, and the time and effort required for cutting can be reduced.

  Further, in this embodiment, the fixing member 5 is fixed to the lower surface side of the upper flange 4b of the beam 4. On the upper surface of the upper flange 4b, not only the supporting member 6 as in this example, but also other hardware, floor materials, columns of the upper floor, and the like may be arranged. By disposing the fixing member 5, it becomes difficult to limit the mounting position of the fixing member 5. As a result, since the fixing members 5 can be installed at appropriate intervals in order to secure the strength of the scaffold, it becomes easy to secure the strength and stability of the scaffold.

  The present invention is not limited to the configurations of the above-described embodiments, and can be implemented by various configurations without departing from the content described in the claims. For example, in the above embodiment, the fixing member 5 is fastened and fixed to the lower surface side of the upper flange 4b of the beam 4, but the present invention is not limited to this. For example, even if the fixing member 5 is fixed to the upper surface side of the upper flange 4b. Good. Further, the fixing member 5 may be fixed to the web 4a or the lower flange 4c, or may be fixed to a frame (for example, a pillar) other than the beam 4. The fixing member 5 may be fixed to the body by welding. Further, the fixing member 5 may be directly fixed to the body as in this example, or may be indirectly fixed via another member.

1: Joint structure of outer wall plate 2: Outer wall 3: Outer wall plate 4: Beam (frame)
4a: Web 4b: Upper flange 4c: Lower flange 5: Fixing member 5a: Fixed part 5b: Connection part 5c: Through hole 5d, 5e: Bending part 6: Supporting member 6a: Horizontal plate part 6b: Vertical plate part 7: Bolt (fastening member)
8: Nut (fastening member)
11: Lateral joint 12: Vertical joint 13, 14: Sealing 15: Notch 16: Sealing pocket 17: Sealing agent A: Axial center of connecting part of fixing member C: Center line of joint width 100: Building

Claims (8)

A joint structure of outer wall slabs in a building in which a plurality of outer wall slabs constituting the outer wall are attached to the body by a locking construction method, and a fixing member capable of connecting an anchor member for connecting scaffolds is fixed to the body. ,
A joint structure for outer wall slabs, wherein the fixing member is arranged at a lateral joint between upper and lower outer wall slabs.   The joint structure of the outer wall slab according to claim 1, wherein a notch for arranging the fixing member is formed only on one of the outer wall slabs located above or below the fixing member.   The joint structure of the outer wall slab according to claim 1, wherein the fixing member is eccentrically arranged below a center of a joint width of the lateral joint portion.   The joint structure of the outer wall slab according to any one of claims 1 to 3, wherein the fixing member is arranged in a central portion of a lateral width of the outer wall slab.   The joint structure of the outer wall slab according to any one of claims 1 to 4, wherein the fixing member has a female screw capable of connecting the anchor member.   The joint structure of the outer wall slab according to any one of claims 1 to 5, wherein the fixing member is fixed to a lower surface side of an upper flange of a beam forming the skeleton.   The joint structure of the outer wall slab according to any one of claims 1 to 6, wherein the fixing member is arranged so that a tip of the fixing member is exposed on a surface of the outer wall.   A building comprising the joint structure of the outer wall slab according to any one of claims 1 to 7.

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