JPH11159029A - Construction method for bearing wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method for a bearing wall using structural wall panels, capable of causing sufficient pull-off bearing force even when a horizontal force is applied thereto during an earthquake and shortening a construction period. SOLUTION: A long tie-rod 42 is passed from a lower frame material 10b for an upstairs structural wall panel 6 through a downstairs structural wall panel 4 and the tie-rod 42 is connected at its lower end through a connection long nut 40 to an anchor bolt 16 rising from a footing. The nut 46 is threaded to the upper end of the tie-rod 42 projecting upward from the lower frame material 10b for the upstairs structural wall panel 6 via a beating plate 44 and the nut 46 is fastened to apply bearing stress from the bearing plate 44 to the lower frame material 10b for the upstairs structural wall panel 6 and the downstairs structural wall panel 4 so that the downstairs and upstairs structural wall panels 4, 6 can be fastened onto the footing 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for constructing a load-bearing wall using a structural wall panel.

[0002]

2. Description of the Related Art FIG. 4 shows a load-bearing wall of a building constructed by structural wall panels. A plurality of structural wall panels 4 arranged and arranged on a foundation 2 form an outer wall of the first floor. A plurality of structural wall panels 6 arranged and arranged on the upper surface 4 form an outer wall on the second floor, and a plurality of structural wall panels 8 arranged and arranged on the structural wall panel 6 form an outer wall on the third floor.

As shown in FIG. 5, each structural wall panel 4, 6, 8 has an upper frame 10a, a lower frame 10b, and two side frames 10c.
Is formed in a rectangular shape, two face plates 12 fixed to both side surfaces of the frame 10, and a heat insulating material 14 disposed in the frame 10.

FIG. 6 shows a connection structure between the foundation 2 and the structural wall panel 4 for the first floor, and a connection structure between the structural wall panel 4 for the first floor and the structural wall panel 6 for the second floor. According to this figure, the connection between the foundation 2 and the structural wall panel 4 for the first floor is such that the anchor bolt 16 rising from the foundation 2 penetrates into the base 18 placed on the foundation 2 and the first floor slab 20, Furthermore, it extends into the lower frame 10b of the structural wall panel 4 for the first floor. Then, the tip of the anchor bolt 16 penetrates through the hole-down hardware 22 fixed to the lower part of the structural wall panel 4 and the nut 2 is attached to the tip of the anchor bolt 16.
4 is screwed and tightened to tighten the hole-down hardware 22 and the anchor bolt 16, thereby connecting the structural wall panel 4 for the first floor and the foundation 2.

The connection between the first-floor structural wall panel 4 and the second-floor structural wall panel 6 is performed by connecting the upper frame 10a of the first-floor structural wall panel 4 and the second floor placed on the structural wall panel 4. The connecting bolts 28 are inserted through through holes formed in the lower frame 10b of the floor slab 26 and the structural wall panel 6 for the second floor, and the supporting bolts 30 are provided at both ends of the connecting bolts 28.
The first-floor wall panel 4 and the second-floor wall panel 6 are connected by tightening the nut 32 screwed to the first floor. The structural wall panel 6 for the second floor and the structural wall panel 8 for the third floor
A connection bolt 28 is used similarly to the connection structure between the structural wall panel 4 for the first floor and the structural wall panel 6 for the second floor.

[0006]

By the way, when a horizontal force at the time of an earthquake is applied to the load-bearing wall, the connecting portions of the structural wall panels located at the ends of the load-bearing wall (the first floor and the second floor arranged on the right side in FIG. 4). And the third-floor structural wall panels 4, 6, 8). However, when the structure of the load bearing wall shown in FIG. 6 is adopted, the connecting portion between the foundation 2 and the structural wall panel 4 for the first floor has structural wall panels 4, 6, 8 for the first floor, the second floor, and the third floor. And a large pulling force acts. Therefore, the structural wall panel 4 and the foundation 2
It is difficult to withstand a large pull-out force only with the hole-down metal fitting 22 connecting the and, and reinforcement work must be performed to withstand the pull-out force, which may increase the construction cost.

In the structure of the load-bearing wall shown in FIG. 6, since the connecting work of the structural wall panels is performed for each floor, the construction period is prolonged. The present invention has been made in view of the above circumstances, and provides a method for constructing a load-bearing wall capable of reliably generating pull-out strength by the application of horizontal force during an earthquake and shortening the construction period. The purpose is.

[0008]

In order to solve the above-mentioned problems, the present invention provides a structural wall panel having a rectangular frame and two face plates integrated on both sides of the rectangular frame. In the method of constructing a structural wall panel for the lower floor on the foundation of the building and constructing a structural wall panel for the upper floor above the structural wall panel and constructing a load-bearing wall, A tie rod is passed from the lower frame material of the structural wall panel for the upper floor to the inside of the structural wall panel for the lower floor, and a lower end of the tie rod is connected to an anchor member provided on the foundation, thereby forming the structure for the upper floor. A nut is screwed into the upper end of the tie rod projecting upward from the lower frame material of the wall panel via a supporting member, and the lower frame is tightened by tightening the nut. For upper floor and lower floor by applying bearing stress to structural material and structural wall panel for lower floor The structural wall panels are fastened to the method on the basis.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those shown in FIGS. 4 to 6 are denoted by the same reference numerals, and description thereof will be omitted.

FIGS. 1 and 2 show the structure of the load-bearing wall of the first embodiment. In this embodiment, a large-diameter through hole 18a is formed in the base 18, and a small-diameter through hole 20a is formed in the first floor slab 20 so as to communicate with the through hole 18a at an upper position. I have. Further, through holes 10d, 14a, and 10e coaxially communicating with the through holes 20a of the first floor slab 20 are also formed in the lower frame 10b, the heat insulating material 14, and the upper frame 10a of the structural wall panel 4 for the first floor. ing. Further, the second floor slab 26 and the lower frame 1 of the structural wall panel 6 for the second floor are provided.
0b, the through-hole 26 coaxially communicating with the through-hole 10e.
a and 10f are formed.

As shown in FIG. 2, an anchor bolt 16 having a short length stands up from the foundation 2 in the large-diameter through hole 18a. The lower part of the nut 40 is screwed. The lower end of the tie rod 42 that has passed through the above-described through holes 10f, 26a, 14a, 10d, and 20a is screwed into the upper part of the connecting long nut 40.

The upper portion of the tie rod 42 projects into a space from which the heat insulating material 14 above the lower frame 10b for the second-floor structural wall panel 6 has been removed, and a nut 46 is provided at the upper end thereof via a bearing plate 44. It is screwed. A supporting stress is applied from the supporting plate 44 to the lower frame 10b of the structural wall panel 6 for the second floor and the structural wall panel 4 for the first floor by the tightening of the nut 46, whereby the structure for the first floor is formed. The wall panel 4 and the structural wall panel 6 for the second floor are the foundation 2
Fixed on top.

Here, when a horizontal force at the time of an earthquake is applied to the load-bearing wall having the above-described structure, a pull-out force acts on the bearing plate 44 disposed at the upper end of the tie rod 42. Since the load on the structural wall panel 4 does not act as a pull-out force, the support plate 44 alone can withstand a sufficiently high pull-out force. Therefore, it is not necessary to perform the reinforcement work for the pull-out strength, so that the construction cost can be reduced.

Next, a method of constructing the load-bearing wall having the above configuration will be described below. First, the lower part of the connecting long nut 30 is screwed into the anchor tip 16a rising from the foundation 2. Next, the base 18 is placed on the foundation 2 so that the connecting long nut 30 is located in the large-diameter through-hole 18a. Further, the through-holes 18a and 20a communicate with each other on the base 18. The first floor slab 20 is placed.

Next, the first floor slab 30 is connected so that the through hole 10d of the lower frame 10b communicates with the through hole 20a of the first floor slab 20.
A structural wall panel 4 for the first floor is erected on the top. Next, a through hole 10e formed in the upper frame 10a of the structural wall panel 4 for the first floor.
The second floor slab 26 is placed so that the through hole 26a communicates with the second floor.

Next, the tie rod 42 is inserted from the through hole 26 a side of the second floor slab 26, and the lower end of the tie rod 42 is screwed onto the upper part of the connecting long nut 30. At this time, the upper end of the tie rod 42 projects upward from the through hole 26a of the second floor slab 26.

Next, the second floor slab 26 is connected so that the through hole 26a of the second floor slab 26 communicates with the through hole 10f of the lower frame 10b.
The structural wall panel 6 for the second floor is erected above. This allows
The upper end of the tie rod 42 projects into a space from which the heat insulating material 14 of the structural wall panel 6 for the second floor has been removed.

Then, a nut 46 is screwed to the upper end of the tie rod 42 via a supporting plate 44, and the nut 46 is tightened. As a result, the bearing plate 44 pressed against the nut 46 is connected to the lower frame 10 of the structural wall panel 6 for the second floor.
Since the bearing stress is applied to b and the first-floor structural wall panel 4, the first-floor structural wall panel 4 and the second-floor structural wall panel 6 are fixed on the foundation 2.

As described above, according to the construction method of the load-bearing wall of the present embodiment, the structural wall panel 6 for the second floor and the structural wall panel 4 for the first floor are simultaneously connected by the tie rods 42 connected to the anchor bolts 16. Therefore, compared with the conventional method of constructing a load-bearing wall, the connection work between the structural wall panels is reduced, and the construction period can be shortened.

FIG. 3 shows the structure of a load-bearing wall according to a second embodiment. In this embodiment, a cap nut 50 having a screw hole directed upward is embedded in the foundation 2, and a tapered base hole 52 having a diameter increased toward the upper surface of the foundation 2 is provided above the cap nut 50. Are formed. Also,
An anchor 54 embedded in the foundation 2 is fixed to a side portion of the cap nut 50 by welding or the like.

The lower frame 10 of the structural wall panel 6 for the second floor
A hole-down metal part 56 is provided in the space from which the heat insulating material 14 above b is removed. The hole-down metal part 56 includes a fixing plate 56a fixed to the side frame 10c of the structural wall panel 6 for the second floor via a nail or a screw,
This is a member provided with a supporting plate 56b which is provided with a through hole (not shown) through which the tie rod 42 penetrates and is in contact with the lower frame 10a.

Further, a small diameter through hole 18b through which the tie rod 42 passes is formed in the base 18 of the present embodiment. The lower end of the tie rod 42 is
It is screwed to the inner cap nut 50 and is disposed so as to pass through the lower frame 10b of the structural wall panel 4 for the first floor and the structural wall panel 6 for the second floor.
b, and protrudes upward through the through hole provided in b. When the nut 58 screwed to the upper end of the tie rod 42 is tightened, the bearing stress is applied from the supporting plate 56b of the hole-down hardware 56 to the lower frame 10b of the structural wall panel 6 for the second floor and the structural wall panel 4 for the first floor. In addition, a structural wall panel 4 for the first floor and a structural wall panel 6 for the second floor are fixed on the foundation 2.

When a horizontal force at the time of an earthquake is applied to the load-bearing wall having the above structure, a pull-out force acts on the supporting plate 56b of the hole-down metal part 56, but the side frame 10c of the structural wall panel 6 for the second floor is used.
A fixing plate 56a of the hole-down metal member 56 fixed to the support member 56b serves as a reinforcing member for the supporting plate 56b. Therefore, this embodiment can also withstand a sufficient pulling force.

Further, similarly to the first embodiment, the tie rod 42 connected to the cap nut 50 embedded in the foundation 2 is provided.
Since the structural wall panel 6 for the second floor and the structural wall panel 4 for the first floor are simultaneously tied together, the connection work between the structural wall panels is reduced as compared with the conventional construction method of the load-bearing wall, and the construction period is shortened. Can be shortened.

[0025]

As described above, when a horizontal force at the time of an earthquake is applied to a load-bearing wall, a pull-out force acts on a supporting member disposed at an upper end of a tie rod. Since the load on the wall panel does not act as a pull-out force,
The supporting member alone can withstand a sufficient pulling force. Therefore, it is not necessary to perform the reinforcement work for the pull-out strength, so that the construction cost can be reduced.

Further, since the structural wall panels for the upper floor and the structural floor panels for the lower floor are simultaneously tied by the tie rods connected to the anchor members, the structural wall panels are compared with each other in comparison with the conventional construction method of the load-bearing wall. Connection work can be reduced, and the construction period can be shortened.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a structure of a load-bearing wall according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a structure of a base unit according to the first embodiment.

FIG. 3 is a sectional view of a main part showing a structure of a load-bearing wall according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a three-story building in which a load-bearing wall is constituted by structural wall panels.

FIG. 5 is a perspective view showing components of the structural wall panel.

FIG. 6 is a view showing a structure of a conventional load-bearing wall.

[Explanation of symbols]

 4 Structural wall panel for first floor (structural wall panel for lower floor) 6 Structural wall panel for second floor (structural wall panel for upper floor) 10 Frame 10a Upper frame 10b Lower frame 12 Face plate 14 Insulation material 16 Anchor bolt 40 Long nut for connection 42 Tie rod 44 Support plate (Support member) 46, 58 Nut 50 Cap nut 54 Anchor 56 Hole down hardware 56b Support plate

Claims (1)

[Claims] 1. A structural wall panel having a rectangular frame and two face plates integrated on both sides of the rectangular frame, and a structural wall panel for a lower floor on a foundation of a building. In the method of erecting a structural wall panel for an upper floor above the structural wall panel to construct a load-bearing wall, a long tie rod is removed from a lower frame material of the structural wall panel for an upper floor. The lower end of the structural wall panel for the lower floor is penetrated, the lower end of the tie rod is connected to the anchor member provided on the foundation, and the tie rod protruding upward from the lower frame material of the structural wall panel for the upper floor. A nut is screwed to the upper end via a supporting member, and tightening of the nut causes a supporting stress from the supporting member to the lower frame member and the lower structural wall panel for the upper floor structural wall panel. In addition, the structural wall panels for the upper floor and the lower floor are fastened on the foundation. How to build a load-bearing wall and it said.