JP7160634B2 - Joint structure of outer wall slab and building - Google Patents

Description

TECHNICAL FIELD The present invention relates to a joint structure of an outer wall slab in a building provided with fixing members for connecting scaffolding to the skeleton of the building, and the building.

BACKGROUND ART Conventionally, scaffolding is installed around a building in some cases to perform work such as construction of an outer wall. In order to increase the stability of the scaffolding, a method is known in which the scaffolding is connected to the frame of the building via wall-connecting anchor members or the like.

For example, Patent Literature 1 discloses a wall-connecting fitting for connecting a wall-connecting anchor member to a building skeleton. The wall tie fitting has a hook portion that can be engaged with a steel frame column of a building on one end side, and a connection portion that can connect an anchor member on the other end side.

In an outer wall composed of a plurality of outer wall panels (outer wall panels), this wall connecting fitting engages a hook portion with a steel frame column of a building through a vertical joint between laterally adjacent outer wall panels. An anchor member on the scaffolding side is connected to the connecting portion in a state in which the connecting portion on the end side protrudes outside from the vertical joint portion.

JP-A-5-340087

However, the wall joint mounting hardware described in Patent Literature 1 is based on the premise that it is arranged at the vertical joint portion between the laterally adjacent outer wall plates. For this reason, it can be used when the vertical joints between the laterally adjoining outer wall slabs have small gaps or no gaps, for example, in buildings where each slab is attached to the frame using the rocking construction method. Have difficulty.

In addition, the installation interval of the wall connecting fittings is set within a predetermined range from the viewpoint of ensuring the strength of the scaffolding. Since the wall connecting fittings of Patent Document 1 are arranged at the vertical joints between the laterally adjoining outer wall slabs, the positions of the vertical joints must be aligned with the above-mentioned predetermined installation intervals, and the slabs of the right and left sides must be positioned at the same intervals. allocation may be affected.

Therefore, the present invention provides an exterior wall slab joint structure and a building in which a scaffolding can be connected to the building frame even in a building in which the exterior wall slabs are attached to the building frame by a rocking construction method, and the layout of the exterior wall slabs is less likely to be affected. intended to provide

The present invention relates to the joints of the outer wall slabs in a building in which a plurality of outer wall slabs constituting an outer wall are attached to a building frame by a locking construction method, and fixing members connectable with anchor members for connecting scaffolding are fixed to the building frame. is a structure,
The fixing member is characterized in that it is arranged at the horizontal joint portion between the outer wall panels arranged vertically.

In addition, in the joint structure of the outer wall slab of the present invention, a notch for arranging the fixing member is formed only in either one of the outer wall slabs positioned above or below the fixing member. preferably.

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

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

Moreover, in the joint structure of the outer wall slab of the present invention, it is preferable that the fixing member is fixed to the lower surface side of the upper flange of the beam that constitutes the frame.

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

Moreover, the building of the present invention is characterized by comprising any of the joint structures of the outer wall slabs described above.

According to the present invention, even in a building in which the outer wall slabs are attached to the building frame by the rocking construction method, scaffolding can be connected to the building frame, and the layout of the outer wall slabs is less likely to be affected. can provide.

1 is a vertical cross-sectional view showing a joint structure of an outer wall slab as one embodiment of the present invention. FIG. 2 is a front view of the joint structure of the outer wall slab of FIG. 1; FIG. It is a top view which shows an example of a fixing member. 4 is a side view of the fixing member of FIG. 3; FIG.

An embodiment of the present invention will be described below with reference to the drawings. In addition, the same code|symbol is attached|subjected to the structure which is common in each figure.

FIG. 1 is a vertical sectional view (longitudinal sectional view) showing an exterior wall slab joint structure 1 in a building 100, and FIG. be.

Here, the overall configuration of the building 100 will be described as an example. Building 100 can be, for example, a two-story house with a steel frame. Also, 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 positioned below the upper structure and supports the framework thereof. The upper structure includes a framework (framework) composed of a plurality of columns and a plurality of beams 4 installed between the pillars, an outer wall 2 arranged on the outer peripheral side of the frame, and beams 4 constituting the frame. floors and roofs of each floor arranged above.

The building 100 includes an outer wall 2 (peripheral wall) that surrounds the outer periphery of the building 100, and the outer wall 2 is configured by connecting a plurality of panel-like outer wall panels 3 to each other. Further, each outer wall plate 3 is attached to the building frame by a locking construction method. In other words, each outer wall slab 3 is configured to be able to swing left and right with respect to the building frame along with inter-layer displacement or the like.

Specific examples of the outer wall slab 3 include panels of lightweight aerated concrete (hereinafter referred to as "ALC", "ALC" being an abbreviation for "autoclaved light weight concrete"), and PC concrete panels. , and extruded cement plates, etc. 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 frame by the locking construction method. By connecting this outer wall slab 3 to the outer peripheral side of beams 4, columns, etc., which are structural members constituting the building frame, the outer wall 2 as an outer skin layer can be formed. Sealings 13 and 14 are respectively applied to the horizontal joints 11 between the outer wall slabs 3 arranged vertically and the vertical joints 12 between the laterally adjacent outer wall slabs 3 (see FIG. 2).

In this example, the gap between the laterally adjacent outer wall slabs 3 (the gap between the outer wall slabs 3 formed at the joint bottom of the vertical joint portion 12) is 1 mm. The gap between them (the gap between the outer wall slabs 3 formed at the joint bottom of the horizontal joint portion 11) is 15 mm, but the size of each gap can be changed as appropriate. 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 bottom of the joint, but the so-called "sealing width", that is, the maximum width of the range where the sealing 13, 14 is applied to the joints 11, 12.

As shown in FIG. 1, a building 100 includes beams 4 as structural members that support an outer wall slab 3 and constitute a building frame, and fixing members 5 connectable with anchor members for connecting scaffolding to the building frame. .

The beams 4 are arranged along the outer wall 2 surrounding the outer periphery of the building 100, extend horizontally, and are supported by a plurality of pillars. The beam 4 of the present example is made of H-shaped steel having a web 4a and an upper flange 4b and a lower flange 4c respectively connected to the upper and lower ends of the web 4a. Note that the shape and material of the beam 4 can be changed as appropriate.

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. A 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 . Further, the support member 6 of this example extends so as to support the entire lateral width (horizontal length) of the outer wall slab 3 from below. The support member 6 does not necessarily have to be a long member that supports the entire lateral width of the exterior wall slab 3, and may be configured using a plurality of support members shorter in length than the lateral width of the exterior wall slab 3. In this case, for example, a plurality of support members may be arranged with a gap between each other to support the outer wall slab 3 .

As shown in FIGS. 1 and 2, the support member 6 of this example has a horizontal plate portion 6a extending in the horizontal direction and a vertical plate portion 6b vertically erected 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 is in contact with the lower surface of the outer wall slab 3 to support the outer wall slab 3 from below. The vertical plate portion 6b is applied to the indoor side surface of the exterior wall slab 3, and is fastened using fastening members such as bolts in a state in which the exterior wall slab 3 can be rocked (oscillated) with respect to the support member 6. be done. That is, the outer wall slab 3 is configured so as not to move in the thickness direction of the outer wall slab 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-like fixing portion 5a fastened and fixed to the beam 4, and a cylindrical connecting portion provided with a female screw on the inner peripheral surface. 5b. Two through holes 5c are formed in the fixed portion 5a for passing the bolts 7 and the like. In addition, bent portions 5d and 5e are formed in the fixing portion 5a for arranging the connecting portion 5b at a predetermined height. By adjusting the height of the bent portions 5d and 5e, the connection portion 5b is positioned at the horizontal joint portion of the outer wall slab 3 while the fixed 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 11 predetermined heights. The fixing member 5 can be made of metal (hardware), but the material is not particularly limited, and resin or the like may be used as long as it has appropriate rigidity.

The connecting portion 5b is configured to be connectable with an anchor member for connecting the scaffolding to the building frame, and in the case of this example, the anchor member has a male thread that is screwed into the female thread of the connecting portion 5b. A male thread may be provided on the connecting portion 5b side, and a female thread may be provided on the anchor member side. Moreover, the connection between the fixing member 5 and the anchor member is not limited to the connection method by screwing the male screw and the female screw, but may be configured using other connection methods. Further, the shape of the fixing member 5 can be changed as appropriate. For example, the fixing portion 5a as a whole may be formed into a flat plate shape without providing the bending portions 5d and 5e, or the position and angle of the connecting portion 5b with respect to the fixing portion 5a may be changed. etc. can also be changed.

As shown in FIG. 1, the fixing member 5 extends from the beam 4 positioned on the indoor side of the outer wall 2 to the surface of the outer wall 2 through the gap of the horizontal joint portion 11 between the outer wall slabs 3 arranged vertically. exist. That is, the fixing member 5 is arranged in the horizontal joint portion 11 between the outer wall slabs 3 arranged vertically, and penetrates the outer wall 2 in the thickness direction, and the tip of the connecting portion 5b is located on the surface of the outer wall 2. exposed to Further, the fixing member 5 of this example is arranged so that the axis A of the connecting portion 5b extends in the horizontal direction and extends perpendicularly to the outer wall 2 (outer wall slab 3) in a plan view. be. Further, in this example, a notch portion 15 for arranging the fixing member 5 is formed in the outer wall slab 3 positioned below the fixing member 5 . Further, the fixing member 5 of this example is arranged below the supporting member 6 .

Further, as shown in FIGS. 1 and 2, on the surface of the outer wall slab 3, a recessed sealing pocket 16 (sinking portion) is formed around the connecting portion 5b of the fixing member 5. As shown in FIGS. The sealing pocket 16 is filled with a sealing agent (gap filler) to form a seal 17 . As a result, the gap between the fixing member 5 and the outer wall slab 3 is closed, and the airtightness and waterproofness of the outer wall 2 can be secured. The sealing pocket 16 can have a circular shape when viewed from the front, for example, as shown in FIG. 2, but is not limited to this and may have other shapes.

Further, in this example, the fixing member 5 is fixed to the beam 4 using bolts 7 and nuts 8 for fixing the support member 6 to the beam 4 . That is, in this example, the bolts 7 shown in FIG. 1 are fastened while passing through the horizontal plate portion 6a of the support member 6, the upper flange 4b, and the fixing member 5 collectively. In this way, the number of fastening members to be used can be reduced by collectively fastening and fixing the supporting member 6 and the fixing member 5 to the beam 4 using a common fastening member.

As described above, in this embodiment, the fixing member 5 fixed to the beam 4 is arranged at the horizontal joint portion 11 between the outer wall slabs 3 arranged vertically. By connecting an anchor member for connecting the scaffolding to the connecting portion 5b of the fixing member 5 exposed on the surface of the outer wall 2, the scaffolding can be connected to the frame (beams 4). Thus, in this embodiment, the fixing member 5 arranged at the horizontal joint portion 11 can be used to easily connect the scaffolding to the building frame.

In the case of the outer wall 2 of the rocking construction method, basically, the gap between the outer wall slabs 3 (of the horizontal joint 11) arranged above and below the gap (of the vertical joint 12) between the outer wall slabs 3 adjacent to the left and right is The gap is larger. For this reason, by arranging the fixing member 5 in the horizontal 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 can be obtained. At least the portion 15 can be made small, and in some cases the notch 15 can be omitted. That is, it is possible to reduce the amount of cutting of the outer wall slab 3 for arranging the fixing member 5 .

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

Further, in this embodiment, since the fixing member 5 is configured not to protrude greatly from the outer wall 2, there is no need to remove the fixing member 5 after construction, and the fixing member 5 can be reattached when repairing or maintaining the building 100. It can be used as is. In addition, by forming the connecting portion 5b for connecting the anchor member to a female thread structure, it can be arranged so as to be embedded in the outer wall plate 3, and the amount of protrusion from the surface of the outer wall plate 3 can be reduced. Furthermore, by making the connection portion 5b have a female thread structure, it is possible to prevent it from protruding from the surface of the outer wall slab 3. FIG. In addition, since the connection portion 5b has a female 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, compared to the male thread structure. Also, if the threaded hole of the connecting portion 5b is closed with a detachable cover or the like, it is possible to more reliably prevent the sealant from entering the threaded hole. Furthermore, by covering the threaded hole of the connecting portion 5b with a lid after construction, it is possible to prevent dust and the like from entering the threaded hole. When the anchor member is to be reconnected when the building 100 is repaired or the like, the cover can be removed from the connection portion 5b before use.

In addition, by arranging the fixing member 5 in the horizontal joint portion 11 , compared with the case of the vertical joint portion 12 , the layout of the outer wall slabs 3 is less likely to be affected. That is, by arranging the fixing members 5 in the horizontal joint portion 11, the fixing members 5 can be easily arranged at a predetermined installation interval determined for ensuring the strength and stability of the scaffolding.

As described above, according to this embodiment, in the building 100 in which the outer wall slabs 3 are attached to the building frame by the rocking construction method, the scaffolding can be connected to the building frame, and the layout of the outer wall slabs 3 is less likely to be affected. The joint structure 1 and the building 100 can be provided.

In addition, depending on conditions such as the joint width of the horizontal joint portion 11 between the outer wall panels 3 arranged vertically and the thickness of the fixing member 5, the fixing member 5 is attached to the outer wall panel 3 as in this example. A notch 15 for placement may be formed. When the cutout portion 15 is provided, the fixing member 5 is arranged closer to the upper or lower outer wall slab 3, and the cutout portion 15 is formed in only one of the outer wall slabs 3 positioned above or below the fixing member 5. is preferably formed. With such a configuration, it is possible to reduce labor for notching the outer wall slab 3 by cutting or the like. Note that the cutout portions 15 may be provided in both the outer wall slabs 3 positioned above and below the fixing member 5 .

Further, the fixing member 5 of this example is arranged eccentrically below the line C which is the center of the joint width of the horizontal joint portion 11, as shown in FIG. That is, the fixing member 5 of this example is arranged so that the axial center A of the connection portion 5b of the fixing member 5 is located below the center line C of the joint width of the horizontal joint portion 11 . With such a configuration, the cutout amount of the outer wall slab 3 above the fixing member 5 for forming the sealing pocket 16 is smaller than the cutout amount of the outer wall slab 3 below the fixing member 5. . As a result, when the ceiling pocket 16 is viewed from below the building 100, the ceiling pocket 16 is less noticeable, and deterioration of the appearance design due to the ceiling pocket 16 can be suppressed. That is, the sealing pocket 16 provided above the fixing member 5 is easily conspicuous because it becomes a shadow when viewed from below, and tends to impair the design of the appearance. By making it smaller than the sealing pocket 16 on the side, it becomes inconspicuous and can prevent the appearance from deteriorating.

Here, the position of the fixing member 5 is not particularly limited as long as it is arranged in the horizontal joint portion 11, but as shown by the solid line in FIG. preferably. With such a configuration, the load on the sealings 13, 17 during locking can be reduced. That is, since the amount of displacement during rocking is smaller at the central portion than at both side ends of the lateral width of the outer wall slab 3, by disposing the fixing member 5 at the central portion, the fixing member 5 and the outer wall during locking A relative positional deviation with the plate 3 can be reduced. As a result, the load on the sealings 13 and 17 located between the fixing member 5 and the upper and lower outer wall panels 3 can be reduced.

In addition, 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 the two-dot chain line in FIG. 2 . In this case, the cutting amount for forming the cutout portion 15 and the sealing pocket 16 can be further reduced, and the labor 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. As shown in FIG. On the upper surface of the upper flange 4b, not only the support member 6 as in this example, but also other hardware, floor materials, pillars of the upper floor, etc. may be arranged. By arranging the fixing member 5, the mounting position of the fixing member 5 is less likely to be restricted. As a result, the fixing members 5 can be installed at appropriate intervals to ensure the strength of the scaffolding, making it easier to ensure the strength and stability of the scaffolding.

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

1: Joint structure of exterior slab 2: Exterior wall 3: Exterior slab 4: Beam (framework)
4a: web 4b: upper flange 4c: lower flange 5: fixing member 5a: fixing part 5b: connecting 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: Horizontal joint part 12: Vertical joint part 13, 14: Sealing 15: Notch 16: Sealing pocket 17: Sealant A: Axis of connecting part of fixing member C: Center line of joint width 100: Building

Claims (8)

A joint structure of an outer wall plate in a building in which a plurality of outer wall plates constituting the outer wall are attached to the building frame by a rocking construction method,
a support member that supports the outer wall slab from below;
a fixing member capable of connecting an anchor member for connecting a scaffold,
The support member is fixed to the upper surface side of the flange of the beam that constitutes the skeleton,
The fixing member is
fixed to the lower surface side of the flange,
A joint structure of outer wall slabs, characterized by being arranged in a horizontal joint part between outer wall slabs arranged vertically. 2. The joint structure of the outer wall slab according to claim 1, wherein a notch portion for arranging the fixing member is formed in only one of the outer wall slabs positioned above or below the fixing member. The joint structure of the outer wall slab according to claim 1 or 2, wherein the fixing member is arranged eccentrically below the center of the joint width of the horizontal 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 the center of the 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 an internal thread to which the anchor member can be connected. The joint structure of the outer wall slab according to any one of claims 1 to 5, wherein the fixing member is fixed to the lower surface side of the upper flange of the beam . 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 the tip of the fixing member is exposed on the 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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