JP2021085270A - Construction method of wall panel - Google Patents

Abstract

To dispense with strict management of installation accuracy of a large amount of pull bolts used so that a lower end of a wall panel is fixed to a concrete skeleton part, and improve site workability.SOLUTION: A construction method of a wall panel 1, which fixes a lower end of a wall pane 1 made of a woody material to a concrete skeleton part 2 with fixing means A having a pull bolt 3 resisting against a pull-out force and an anchor 4 resisting against a shear force, embeds a sheath pipe 7 for forming a loose hole 6 having a larger diameter than that of the pull bolt 3 in an arrangement corresponding part of the pull bolt 3 in construction of the concrete skeleton part 2, inserts the pull bolt 3 to the sheath pipe 7 in construction of the wall panel 1 after curing the concrete skeleton part 2, and fixes the pull bolt 3 to the concrete skeleton part 2 by a dry method using the sheath pipe 7.SELECTED DRAWING: Figure 1

Description

The present invention relates to a method for building a wall panel in which the lower end of a wall panel made of wood-based material is fixed to a concrete skeleton by a fixing means provided with a pulling bolt that resists a pulling force and an anchor that resists a shearing force.

As a method for building a wall panel, as shown in Patent Document 1, there is a method for constructing a bonded structure of precast reinforced concrete members. In this method, a precast concrete floorboard, a lower part of the precast concrete second floor wallboard that is joined to the upper side surface of the precast concrete floorboard, and a precast concrete first floor wall that is joined to the lower side surface of the floorboard. A sleeve that communicates in the vertical direction is embedded in each of the upper portions of the plate in advance. Bolts are placed through the sleeve of the wallboard on the second floor, the sleeve of the floorboard, and the sleeve of the wallboard on the first floor. Nuts are screwed into the upper and lower ends of the bolts facing the square holes provided on the lower side of the wall plate on the second floor and the square holes provided on the upper side of the wall plate on the first floor via washers. By tightening both nuts, the wall plate on the second floor and the floor plate and the wall plate on the first floor are tightly connected. After that, each sleeve is filled with mortar through the square holes of the wall plate on the second floor, and each square hole is also filled with mortar or concrete.

Jikken 03-001923 Gazette

In the method (bonding structure) of Patent Document 1 described above, the lower end of a wall panel made of wood-based material such as CLT is fixed to a concrete skeleton by a fixing means provided with a pulling bolt that resists a pulling force and an anchor that resists a shearing force. There is no description about the construction method of the wall panel to be fixed to the part.
Generally, in order to fix the lower end of a wall panel made of wood-based material to a concrete skeleton, a large amount of pull bolts and shear resistance anchor bolts are required, and very strict control of the installation accuracy is required. , It is a major factor that impairs on-site workability.

In view of this situation, the main subject of the present invention is to eliminate the need for strict control of the installation accuracy of a large number of pull bolts used to fix the lower end of the wall panel to the concrete skeleton, and to improve the on-site workability. The point is to provide a method for building wall panels that can be built.

The first characteristic configuration of the present invention is the construction of a wall panel in which the lower end of a wall panel made of wood-based material is fixed to a concrete skeleton by a fixing means equipped with a pulling bolt that resists a pulling force and an anchor that resists a shearing force. It ’s a built-in method,
At the time of constructing the concrete skeleton portion, a sheath pipe forming a loose hole having a diameter larger than that of the pull bolt is embedded in a portion corresponding to the arrangement of the pull bolt, and the wall panel is built after the concrete skeleton portion is hardened. Occasionally, the pull bolt is inserted into the sheath pipe, and the pull bolt is fixed to the concrete skeleton portion by a dry method using the sheath pipe.

According to the above configuration, when constructing the concrete skeleton, a sheath pipe that forms a loose hole having a diameter larger than the bolt diameter is embedded in a place corresponding to the arrangement of the pull bolt. The inserted pull bolt can be easily and accurately placed at a position corresponding to the pull bolt placement position of the wall panel by using the spare space of the loose hole. Therefore, it is not necessary to strictly control the installation accuracy of a large amount of pull bolts used to fix the lower end of the wall panel to the concrete skeleton portion, and the on-site workability can be improved.
Moreover, since it is a dry method in which the wall panel and the concrete skeleton are fixed to each other with pull bolts, the efficiency of on-site construction is improved compared to the wet method in which grout is filled inside the sheath pipe into which the pull bolts are inserted. be able to.

The second characteristic configuration of the present invention is a floor slab in which the concrete skeleton portion has spaces above and below, and after the slab formwork is removed, the pull bolt is arranged so as to penetrate the floor slab through the sheath pipe. After adjusting the position of the wall panel, a bearing plate is attached to a portion of the pulling bolt below the floor slab, and a nut is tightened to the pulling bolt so as to press the bearing plate against the floor slab. , The lower end of the wall panel and the floor slab are tied together by the pull bolt.

According to the above configuration, when the wall panel is built after the slab formwork is removed, the pull bolt is arranged so as to penetrate the floor slab through the sheath pipe embedded in the floor slab, and the pull bolt is projected downward from the floor slab. By pressing the bearing plate attached to the protruding part of the pull bolt against the floor slab by tightening the nut screwed into the pull bolt, the lower end of the position-adjusted wall panel can be efficiently tied to the floor slab. Can be done.

The third characteristic configuration of the present invention is based on the concrete skeleton portion, a hook portion is provided at the lower end portion of the pull bolt, a hook portion is provided at the bottom portion of the sheath pipe, and the pull bolt is attached to the sheath. After inserting into the inside of the pipe, hooking the hook portion of the pull bolt to the hook portion of the sheath pipe, adjusting the position of the wall panel, and then connecting the lower end of the wall panel and the foundation with the pull bolt. It is in a tight point.

According to the above configuration, when the wall panel is built, a pull bolt is inserted inside the sheath tube embedded in the foundation, and the hook portion at the lower end of the pull bolt is hooked on the hook portion at the bottom of the sheath tube. By tightening the pull bolts in the state, it is possible to efficiently tighten the position-adjusted wall panel as a foundation.

The fourth characteristic configuration of the present invention is that the pull bolt is provided so as to project downward from the wall panel when the wall panel is built.

According to the above configuration, a pull bolt provided so as to project downward from the wall panel is inserted inside the sheath pipe embedded in the concrete skeleton as the wall panel is hung from the built-in position. Inserted and placed. Moreover, since the arrangement position of the pull bolt is changed according to the position adjustment of the wall panel, the efficiency of the wall panel building work can be improved.

In the fifth characteristic configuration of the present invention, the anchor includes a shear plate with an anchor bar and a shear metal fitting, and when the concrete skeleton is constructed, the shear plate is embedded in the concrete skeleton, and the wall panel is formed. At the time of building, the position of the wall panel is adjusted, and then the shear metal provided at the lower end of the wall panel is welded to the shear plate.

According to the above configuration, when the wall panel is built, the shear metal provided at the lower end of the wall panel is welded to the shear plate with anchor bars (shear resistance anchor bolts) embedded in the concrete skeleton. By this method, it is possible to easily absorb the construction error between the shear plate on the concrete skeleton side and the shear hardware on the wall panel side. Therefore, strict control of the plane position accuracy of the anchor bar of the shear plate becomes unnecessary, and the workability is improved.

A perspective view of a main part at the time of building showing the first embodiment of the method of building a wall panel. Longitudinal front view of the main part at the time of building Section III-III sectional view in FIG. FIG. 2 is a sectional view taken along line IV-IV. Longitudinal front view of the main part at the time of building showing the second embodiment of the method of building the wall panel Longitudinal front view (a) of the foundation sheath pipe burial site and horizontal cross-sectional view (b) of the sheath tube burial site A vertical sectional front view (a) during assembly of the sheath pipe burying portion of the foundation and a horizontal sectional view (b) of the sheath pipe burying portion showing a modified example of the second embodiment of the wall panel building method. Longitudinal front view when the assembly of the foundation sheath pipe burial site is completed

Embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a wall panel building method in which the lower end of a wall panel 1 made of wood-based material is fixed to a floor slab 2 on an upper floor having spaces above and below, which is an example of a concrete skeleton portion.
In this embodiment, a Japanese Agricultural Standard (JAS) orthogonal laminated board (CTL) is used as the wall panel 1 made of wood-based material. This orthogonal laminated lumber includes a ground lumber or a small square timber (including those adjusted by joining and adhering them in the length direction with their fiber directions substantially parallel to each other) in the width direction with their fiber directions substantially parallel to each other. Those arranged or adhered to each other are mainly laminated and adhered with their fiber directions substantially orthogonal to each other to have a structure of three or more layers, and have high dimensional stability, earthquake resistance, and excellent heat insulating properties.

[Preparation process for wall panel 1]
In the construction method of the wall panel 1 of the present embodiment, the lower end of the wall panel 1 is fixed to the floor slab 2 by a fixing means A provided with a pull bolt 3 that resists a pulling force and an anchor 4 that resists a shearing force. ..
Therefore, as a preparatory step before building the wall panel 1, as shown in FIGS. 1 and 2, in a factory or the like, the panel width direction at the lower end of the wall panel 1 (left-right direction of the paper surface in FIGS. 1 and 2). Square holes 12 for mounting and binding the upper bearing plate 10 and the nut 11 to the upper screw portion 3a of the pull bolt 3 are formed at each of the locations corresponding to the pull bolt arrangements on both sides of the above. Each of the square holes 12 opens on one side surface of the wall panel 1.
Further, as shown in FIGS. 1 to 3, the vertical bolt insertion direction is the insertion direction of the pull bolt 3 over the bolt insertion center position of the inner bottom surface 13 in each square hole 12 and the bolt insertion center position of the lower end surface of the wall panel 1. A pull bolt arrangement hole 14 penetrating along the direction is formed through. The pull bolt arrangement hole 14 is formed in a bolt insertion hole having a general hole diameter.

Further, as shown in FIGS. 1, 2, and 4, a steel plate shear metal fitting 4A, which is a constituent member of the anchor 4, is fastened to a central portion in the panel width direction at the lower end portion of the wall panel 1 with screws or the like. Temporarily fasten with tool 16. The shear metal fitting 4A is formed by bending into a U shape. The opposing inner dimensions of the side plates 4a of the shear metal fitting 4A are set to the thickness dimension of the wall panel 1, and the mounting holes (not shown) of the fastener 16 are formed in the side plate 4a of the shear metal fitting 4A. ..
A recess (not shown) corresponding to the thickness of the bottom plate 4b of the shear metal 4A is formed at the attachment portion of the shear metal 4A on the lower end surface of the wall panel 1, and as shown in FIG. 2, the lower end of the wall panel 1 is formed. The lower surface of the bottom plate 4b of the fastened shear metal 4A and the lower end surface of the wall panel 1 are formed as a flush continuous smooth surface. As a result, the lower end surface of the wall panel 1 including the lower surface of the bottom plate 4b of the shear metal fitting 4A can be brought into close contact with the top end surface of the rising portion 2A of the floor slab 2 for stress transmission and ensuring airtightness.

[Floor slab 2 construction process]
The wall panel position is marked on the bottom surface of the floor slab formwork (not shown), and the loose hole 6 having a diameter larger than that of the pull bolt 3 is located at the position corresponding to the arrangement of the pull bolt 3, as shown in FIGS. The metal sheath tube 7 forming the above is arranged in a vertical position in which the loose hole 6 thereof faces in the vertical direction. Although not shown, the sheath tube 7 is fixed to a slab bottom form for which installation accuracy can be easily adjusted. If necessary, it may be fixed to a reinforcing bar 17 or the like arranged in the floor slab 2.
Further, a plate-shaped collar portion 7A larger than the outer diameter of the sheath pipe 7 is fixed to the lower end of the sheath pipe 7, and the lower surface position of the flange portion 7A is a floor slab as shown in FIGS. It is set at the lower surface position of 2. The top position of the sheath pipe 7 projects upward by a set dimension from the top surface 2a of the rising portion 2A of the floor slab 2 when the concrete placement is completed. The protruding dimension of the top end of the sheath pipe 7 is set to the thickness of the level adjusting mortar layer 2B that shapes the top end level of the casting top surface 7a of the rising portion 2A of the floor slab 2 after the concrete placement is completed. ..
In the present embodiment, a polygonal tubular square sheath tube is used as the sheath tube 7, but a round tubular round sheath tube may be used.

A shear plate 4C provided with anchor bars (or studs) 4B, which are constituent members of the anchor 4, is installed at the anchor installation position at the top of the rising formwork (not shown) forming the rising portion 2A of the floor slab 2. The thickness of the shear plate 4C and the thickness of the level adjusting mortar layer 2B are configured to be the same, and the upper surface of the shear plate 4C and the top surface of the level adjusting mortar layer 2B formed on the rising portion 2A are flush with each other. It is composed of a continuous smooth surface.
Therefore, when shaping the top level of the cast top surface 7a of the rising portion 2A of the floor slab 2 with mortar, the mortar can be easily leveled while using the top end of the sheath pipe 7 and the upper surface of the shear plate 4C as a reference (ruler). Can be done.

Then, when the above-mentioned installation work of the sheath pipe 7, installation work of the shear plate 4C, reinforcement arrangement work, etc. are completed, concrete is poured into the floor slab formwork and the rising formwork, and the floor slab 2 including the rising portion 2A is placed. To build.
After the concrete placement is completed, a mortar is laid on the placing top surface 7a of the rising portion 2A of the floor slab 2, and the mortar is used as the top end of the sheath pipe 7 embedded in the floor slab 2 and the shear plate 4C. The upper surface of the mortar layer 2B is shaped into a smooth surface while being leveled as the target crown level (ruler) of the level adjustment mortar layer 2B. The top surface of the level adjusting mortar layer 2B is formed as a continuous smooth surface flush with the top end of the sheath tube 7 and the upper surface of the shear plate 4C.

[Building process of wall panel 1]
As a preparatory work at the time of building the wall panel 1 after the floor slab 2 is cured, as shown in FIG. 1, each of the double pull bolt arrangement holes 14 of the wall panel 1 is opened from the opening on the lower end surface side of the wall panel 1. Insert the pull bolt 3. After attaching the upper bearing plate 10 that contacts the inner bottom surface 13 in each square hole 12 to the upper screw portion 3a of the pull bolt 3 protruding into each square hole 12 of the wall panel 1, the upper screw of the pull bolt 3 is attached. A nut 11 that comes into contact with the upper surface of the upper bearing plate 10 is screwed into the portion 3a.
When the wall panel 1 is lifted in this state, the lower half side of the pull bolt 3 fixed by the nut 11 in each square hole 12 of the wall panel 1 projects downward from the lower end opening of each pull bolt arrangement hole 14. To hang down.

Next, as shown in FIG. 1, the wall panel 1 to which the pull bolt 3 is mounted is suspended and carried into the built-in position of the rising portion 2A of the floor slab 2, and each pull bolt arrangement hole 14 of the wall panel 1 is carried in. While inserting the lower half side of the pull bolt 3 hanging from the lower end opening of the wall panel 1 into the inside of the sheath pipe 7 embedded in the floor slab 2, the lower end surface of the wall panel 1 is adjusted to the level of the rising portion 2A of the floor slab 2. It is installed on the top surface of the mortar layer 2B.
As shown in FIGS. 2 and 3, when the lower end surface of the wall panel 1 is installed on the level adjusting mortar layer 2B of the floor slab 2, the lower half side of the pull bolt 3 penetrates the sheath pipe 7 of the floor slab 2. The lower threaded portion 3b of the pull bolt 3 projects downward from the lower surface of the floor slab 2.

Level adjustment of floor slab 2 The position of the wall panel 1 installed on the mortar layer 2B is adjusted to the set installation position. At this time, since the sheath tube 7 forms a loose hole 6 having a diameter larger than the bolt diameter of the pull bolt 3, the margin space of the loose hole 6 allows the position of the pull bolt 3 to be adjusted in the horizontal direction. Range.
Then, by using the spare space of the loose hole 6 of the sheath pipe 7, the arrangement position of the pull bolt 3 is changed according to the position adjustment of the wall panel 1, so that the efficiency of the building work of the wall panel 1 is improved. be able to. Moreover, strict control of the installation accuracy of a large amount of pull bolts 3 and shear plates 4C with anchor bars (shear resistance anchor bolts) 4B used to fix the lower end of the wall panel 1 to the concrete skeleton is not required, and on-site construction is required. Sex can be improved.

After adjusting the position of the wall panel 1 described above, as shown in FIGS. 2 and 3, the lower threaded portion 3b of the pull bolt 3 is attached to the lower surface of the flange portion 7A of the sheath tube 7 embedded in the floor slab 2 from below. After mounting the lower bearing plate 18 to be abutted, the nut 19 abutting the lower surface of the lower bearing plate 18 is screwed into the lower threaded portion 3b of the pull bolt 3 penetrating the lower bearing plate 18. .. By tightening the nut 19, the lower bearing plate 18 is pressed against the lower surface of the flange portion 7A of the sheath pipe 7 embedded in the floor slab 2, and at the same time, the upper side attached to the upper screw portion 3a of the pull bolt 3. The bearing plate 10 is pressed against the inner bottom surface 13 in the square hole 12 of the wall panel 1, and the lower end of the wall panel 1 and the floor slab 2 are fastened with the pull bolt 3.

As described above, when the wall panel 1 is built after the slab formwork is removed, the pull bolt 3 is arranged so as to penetrate the floor slab 2 through the sheath pipe 7 embedded in the floor slab 2, and the pull bolt 3 is arranged from the floor slab 2. The position was adjusted by pinching and fixing between the lower bearing plate 18 and the upper bearing plate 10 by tightening the nut 19 screwed into the lower threaded portion 3b of the pull bolt 3 penetrating downward. The lower end of the wall panel 1 can be efficiently tied to the floor slab 2.
Moreover, since the wall panel 1 and the floor slab 2 are fixed to each other with the pull bolt 3, the on-site construction is performed as compared with the wet method in which the inside of the sheath pipe 7 into which the pull bolt 3 is inserted is filled with grout. It is possible to improve efficiency.

Next, the bottom plate 4b of the shear metal fitting 4A temporarily fixed to the central portion in the panel width direction at the lower end portion of the wall panel 1 and the shear plate 4C fixed to the floor slab 2 are integrated by on-site welding, and then integrated. Both side plates 4a of the shear metal fitting 4A are finally fastened to the wall panel 1 with fasteners 16 such as screws. By this method, the construction error between the shear plate 4C on the floor slab 2 side and the shear metal fitting 4A on the wall panel 1 side can be easily absorbed. Therefore, strict control of the plane position accuracy of the anchor bar of the shear plate 4C becomes unnecessary, and the workability is improved.

[Second Embodiment]
5 and 6 show a construction method of the wall panel 1 in which the lower end of the wall panel 1 made of wood-based material is fixed to the foundation 5 which is an example of the concrete skeleton portion.
The mounting structure of the pull bolt 3 on the wall panel 1 side is the same as the mounting structure of the pull bolt 3 on the wall panel 1 side described in the first embodiment described above. The same number as that of the embodiment is added, and detailed description thereof will be omitted.

[Construction process of foundation 5]
When constructing the foundation 5, a sheath pipe 7 that forms a loose hole 6 having a diameter larger than that of the pull bolt 3 is embedded in a portion corresponding to the arrangement of the pull bolt 3 in a vertical posture in which the loose hole 6 faces in the vertical direction. (See FIG. 5). Although not shown, the bottom plate 7B of the sheath tube 7 is fixed to a basic formwork whose installation accuracy can be easily adjusted. If necessary, such as when there is no bottom formwork as the foundation formwork, it may be fixed to a reinforcing bar arrangement (not shown) or the like arranged in the foundation 5.
The top end position of the sheath pipe 7 projects upward by a set dimension from the casting top end surface 5a of the panel arrangement location of the foundation 5 when the concrete placement is completed. The protruding dimension of the top end of the sheath pipe 7 is set to the thickness of the level adjusting mortar layer 5A that shapes the top end level of the casting top end surface 5a of the panel arrangement location of the foundation 5 after the concrete placement is completed.

As shown in FIG. 6, the bottom of the sheath tube 7 is provided with a hook portion 22 on which the hook portion 21 provided at the lower end of the pull bolt 3 can be hooked.
The hook portion 21 is composed of a rod-shaped locking body 21A fixed in a T shape to the lower end portion of the pull bolt 3. The hooking portion 22 has a locking plate 22B forming an engaging space 22A on the bottom side of the sheath pipe 7 so that the locking body 21A of the pulling bolt 3 can enter between the hooking portion 22 and the inner surface of the bottom plate 7B of the sheath pipe 7. The locking plate 22B is fixed to the engaging hole 22C that allows the locking body 21A of the pulling bolt 3 in the set orientation to be inserted and moved, and has a diameter smaller than the length dimension of the locking body 21A. A circular second loose hole 6B having a diameter larger than that of the pull bolt 3 is formed in communication with the second loose hole 6B.

Then, when the locking body 21A of the pull bolt 3 inserted into the engaging hole 22C of the locking plate 22B is changed from the set orientation posture to the hooking posture by the rotation operation of the pull bolt 3, the locking body of the pull bolt 3 is changed. 21A is caught and engaged with the lower surface of the locking plate 22B of the sheath tube 7. Even in this engaged state, the position of the pull bolt 3 in the horizontal direction can be adjusted by the margin space of the second loose hole 6B.

As shown in FIG. 5, a shear plate 4C provided with anchor muscles (or studs) 4B, which are constituent members of the anchor 4, is installed at the anchor installation position of the panel arrangement portion of the foundation 5. The thickness of the shear plate 4C and the thickness of the level adjusting mortar layer 5A are configured to be the same, and the upper surface of the shear plate 4C and the top surface of the level adjusting mortar layer 5A are configured as a flush continuous smooth surface.
Therefore, when shaping the top level while leveling the mortar laid on the casting top surface 5a of the panel arrangement location of the foundation 5, the top end of the sheath pipe 7 and the upper surface of the shear plate 4C are used as a reference (ruler). The mortar can be easily leveled.

When the above-mentioned installation work of the sheath pipe 7, installation work of the shear plate 4C, reinforcement arrangement work, and the like are completed, concrete is cast in the foundation formwork to construct the foundation 5.
After the concrete placement is completed, a mortar is laid on the casting top surface 5a of the panel arrangement location of the foundation 5, and the mortar is used as the top of the sheath pipe 7 embedded in the foundation 5 and the upper surface of the shear plate 4C. Is leveled as the target crown level (ruler) of the level-adjusting mortar layer 5A and shaped into a smooth surface. The top surface of the level adjusting mortar layer 5A is formed as a continuous smooth surface flush with the top end of the sheath tube 7 and the upper surface of the shear plate 4C.

[Building process of wall panel 1]
The pull bolt 3 is inserted into the sheath tube 7 embedded in the foundation 5 in a set orientation posture, and the locking body 21A of the hook portion 21 provided at the lower end portion of the pull bolt 3 constitutes the hook portion 22 of the sheath tube 7. It is inserted into the engaging space 22A through the engagement hole 22C of the locking plate 22B. Next, the pull bolt 3 is rotated to change the locking body 21A of the pull bolt 3 from the set orientation posture to the hook posture. In this state, the upper half side of the pull bolt 3 projects upward from the upper opening of the sheath tube 7. (See Fig. 5)
At this time, to prevent the pull bolt 3 from falling down, moving in a plane, or rotating again, although not shown, a temporary fixing plate is attached to the upper half side of the pull bolt 3 and a nut is attached. Screw in. By the tightening operation of this nut, the temporary fixing plates located on both the upper and lower sides of the locking plate 22B and the locking body 21A of the hook portion 21 are temporarily fixed and fixed in a sandwiched state. (See FIGS. 7 and 8)

Next, as shown in FIG. 5, the wall panel 1 is suspended and carried into the built-in position of the panel arrangement portion of the foundation 5, and the upper half side of the pull bolt 3 protruding upward from the upper opening of the sheath pipe 7 is hung. The lower end surface of the wall panel 1 is installed on the top end surface of the level adjusting mortar layer 5A at the panel arrangement location of the foundation 5 while inserting through the lower end opening of each pull bolt arrangement hole 14 of the wall panel 1.
After adjusting the position of the installed wall panel 1, the upper bearing plate that abuts the upper threaded portion 3a of the pull bolt 3 in each square hole 12 of the wall panel 1 and the inner bottom surface 13 in the square hole 12. After mounting 10, the nut 11 that comes into contact with the upper surface of the upper bearing plate 10 is screwed into the upper threaded portion 3a of the pull bolt 3. By tightening the nut 11, the lower end of the wall panel 1 and the foundation 5 are fastened with the pull bolt 3. As a result, the position-adjusted wall panel 1 can be efficiently tied to the foundation 5.

After that, the bottom plate 4b of the shear metal fitting 4A temporarily fixed to the central portion in the panel width direction at the lower end portion of the wall panel 1 and the shear plate 4C fixed to the foundation 5 are integrated by on-site welding, and then the shear metal fitting. Both side plates 4a of 4A are finally fastened to the wall panel 1 with fasteners 16 such as screws.

[Modified example of the second embodiment]
7 and 8 show a modified example of the construction method of the wall panel 1 in which the lower end of the wall panel 1 made of wood-based material is fixed to the foundation 5 which is an example of the concrete skeleton portion.
As shown in FIG. 7A, a bearing plate 23 that horizontally crosses the sheath tube 7 is provided at a portion that is displaced toward the bottom of the sheath tube 7. The inner plate portion 23a in the sheath pipe 7 of the bearing plate 23 is provided with a hook portion 22 on which the hook portion 21 provided at the lower end portion of the pull bolt 3 can be hooked.

The hook portion 21 fixes a rectangular locking plate 21B having a short side and a long side sufficiently larger than the bolt diameter of the pull bolt 3 to the lower end portion of the pull bolt 3 with a nut 24 or the like in a non-rotatable state. It is composed by doing.
The hook portion 22 is formed by penetrating a second engagement hole 22D having a similar shape slightly larger than the locking plate 21B of the pull bolt 3 through the inner plate portion 23a of the bearing plate 23. The opening width of the second engagement hole 22D in the short side direction is larger than the short side width of the locking plate 21B of the pull bolt 3 and smaller than the long side width of the locking plate 21B. ing.
Therefore, the second engagement hole 22D is formed in the second loose hole 6B which is larger than the bolt diameter of the pull bolt 3, and the inner surface of the second engagement hole 22D which is the second loose hole 6B and the outer circumference of the pull bolt 3 The margin space between the surface and the surface is the range in which the position of the pull bolt 3 can be adjusted.
Further, the locking plate 21B of the pull bolt 3 inserted from the second engagement hole 22D can be engaged between the lower surface of the inner plate portion 23a of the bearing plate 23 and the inner surface of the bottom plate 7B of the sheath pipe 7. An engagement space 22A is formed.

Then, the pull bolt 3 is inserted into the sheath tube 7 embedded in the foundation 5 in the set orientation posture, and the locking plate 21B of the hook portion 21 provided at the lower end portion of the pull bolt 3 is inserted into the hook portion 22 of the sheath tube 7. It is inserted into the engaging space 22A from the second engagement hole 22D in the inner plate portion 23a of the bearing plate 23 constituting the above. Next, the pull bolt 3 is rotated 90 degrees to change the locking plate 21B of the pull bolt 3 from the set orientation posture to the hook posture. In this state, the upper half side of the pull bolt 3 projects upward from the upper opening of the sheath tube 7.
At this time, as shown in FIGS. 7 and 8, a locking plate is placed on the upper half side of the pull bolt 3 so that the pull bolt 3 does not fall down, move in a plane, or rotate again. A temporary fixing plate 25 having the same plan view shape as 21B is exteriorized, and a nut 26 is screwed. By the tightening operation of the nut 26, the temporary fixing plates 25 located on both the upper and lower sides of the inner plate portion 23a of the bearing plate 23 and the locking plates 21B of the hook portion 21 are temporarily fixed and fixed in a sandwiched state.

Since the other configurations are the same as those of the second embodiment of the above-mentioned wall panel 1 building method described with reference to FIGS. 5 and 6, the description thereof will be omitted.

[Other Embodiments]
In each of the above-described embodiments, the pull bolt arrangement hole 14 of the wall panel 1 is formed in a bolt insertion hole having a general hole diameter, but it may be formed in a loose hole having a diameter larger than that of the pull bolt 3.
In this case, the sum of the margin space of the pull bolt arrangement hole 14 and the margin space of the loose hole 6 of the sheath pipe 7 is within the range in which the position of the pull bolt 3 can be adjusted. Therefore, it becomes easy to control the installation accuracy of a large amount of pull bolts 3 and a shear plate 4C with anchor bars (shear resistance anchor bolts) 4B used to fix the lower end of the wall panel 1 to the concrete skeleton, and the on-site workability is improved. can do.

1 Wall panel 2 Concrete skeleton (floor slab)
3 Pull bolt 4 Anchor 4A Shear hardware 4B Anchor reinforcement 4C Shear plate 5 Concrete skeleton (foundation)
6 Loose hole 6A Loose hole (2nd loose hole)
6B loose hole (second loose hole)
7 Sheath pipe 14 Pull bolt placement hole 18 Supporting plate (lower pressure supporting plate)
19 Nut 21 Hook part 22 Hook part A Fixing means

Claims (5)

This is a wall panel construction method in which the lower end of a wall panel made of wood-based material is fixed to the concrete skeleton by a fixing means equipped with a pulling bolt that resists pulling force and an anchor that resists shearing force.
At the time of constructing the concrete skeleton portion, a sheath pipe forming a loose hole having a diameter larger than that of the pull bolt is embedded in a portion corresponding to the arrangement of the pull bolt, and the wall panel is built after the concrete skeleton portion is hardened. Occasionally, a wall panel building method in which the pull bolt is inserted into the sheath pipe and the pull bolt is fixed to the concrete skeleton portion by a dry method using the sheath pipe. The concrete skeleton is a floor slab having spaces above and below, and after the slab formwork is removed, the pull bolt is arranged so as to penetrate the floor slab through the sheath pipe, and the position of the wall panel is adjusted. Above, a bearing plate is attached to a portion of the pulling bolt below the floor slab, a nut is tightened onto the pulling bolt so as to press the bearing plate against the floor slab, and the lower end of the wall panel and the floor. The method for building a wall panel according to claim 1, wherein the slab is fastened with the pull bolt. The concrete skeleton is the foundation, a hook portion is provided at the lower end of the pull bolt, a hook portion is provided at the bottom of the sheath pipe, the pull bolt is inserted into the sheath pipe, and the pull bolt is inserted. The wall panel according to claim 1, wherein the hook portion of the bolt is hooked on the hook portion of the sheath tube, the position of the wall panel is adjusted, and then the lower end of the wall panel and the foundation are fastened with the pull bolt. Built-in construction method. The method for building a wall panel according to any one of claims 1 to 3, wherein the pull bolt is provided so as to project downward from the wall panel when the wall panel is built. The anchor includes a shear plate with an anchor bar and a shear metal fitting, and the shear plate is embedded in the concrete skeleton portion when the concrete skeleton portion is constructed, and the wall panel is built when the wall panel is built. The wall panel building method according to any one of claims 1 to 4, wherein the shear metal provided at the lower end of the wall panel is welded to the shear plate after adjusting the position.

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