JP2002294879A - Swelling preventive structure of bearing wall in wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a swelling preventive structure of a bearing wall in a wooden building capable of effectively preventing swelling of a leg part of the bearing wall by simple hardware housed in a plane of the bearing wall, and excellent in both aspects of executability and design. SOLUTION: Swelling preventive hardware 5 having installing piece parts 5a and 5b to a vertical frame 4 and a lower frame 3 is arranged in a crossing part of the vertical frame 4 and the lower frame 3 of the bearing wall of the wooden building, and is fixed by driving nail parts 8 and 9 in the vertical frame 4 and the lower frame 3 from the installing piece part 5a, 5b side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a leg of a load-bearing wall of a wooden building from rising during an earthquake.

[0002]

2. Description of the Related Art In a variety of wooden buildings such as wooden houses, when a horizontal force is applied to a frame provided with load-bearing walls during an earthquake,
A floating force is generated at the leg of the load-bearing wall. For this reason,
When constructing the wooden building, various structures for preventing the legs of the load-bearing wall from rising are adopted in advance.

FIG. 4 shows a conventional floating prevention structure used for a wooden house of this kind. A base (lower frame) 12 mounted on a reinforced concrete foundation 11 and a base 12 are provided. When a wall panel (earthquake-resistant wall) 14 is provided on a skeleton having a vertical frame 13 erected on the base 12, a T-shaped metal plate 15 is applied to the base 12 and the vertical frame 13, and a nail 16 is driven into the base 12. The vertical frame 13 and the wall panel 14 are integrated with each other to prevent the leg of the wall panel 14 from rising. In addition, the code | symbol 17 in a figure is a floor base material which consists of plywood etc.

Further, as a structure for preventing the bearing wall from rising up and down the floor, a structure using a hole-down metal as shown in FIGS. 5 (a) and 5 (b) is also known. In this floating prevention structure, L-shaped metal parts 22 are arranged upside down and fixed on vertical frames 20 and 21 on the upper floor and lower floor, respectively, and fixed by nails 27. The upper members are restrained from rising by tightening them together by pulling bolts 26 penetrating the lower frame 23, the floor frame 24 such as a floor joist, the upper frame 25, and the like.

[0005]

By the way, in the conventional floating prevention structure shown in FIG. 4, since the flat metal member 15 protrudes from the outer surface of the wall panel 14 or the like, when it is used for the outer wall, the outer wall material is used. In order to conceal the flat metal piece 15, some contrivance is required. In addition, even when the flat metal 15 is used for an indoor inner wall, the flat metal 15 interferes with an unillustrated floor ground adjacent to the floor ground 17, and a slit for separately penetrating the flat metal 15 through this floor ground is used. In this case, there is a problem that the workability is poor.

On the other hand, the floating prevention structure using the hole-down hardware shown in FIG. 5 does not have the drawbacks shown in FIG. 4 because it is mounted inside the load-bearing wall. Vertical frame 2 on the lower floor as well as vertical frame 20 on the upper floor
1 also has a problem that the number of parts is increased because the metal parts 22 need to be opposed to each other. Therefore, there is a problem that a great deal of labor is required for a drilling operation with strict accuracy, a closing operation after the drawing bolt 26 is inserted, and the like. Further, in particular, in the case of installation on the second and third floors, it is necessary to make the vertical frames 20, 21 coincide with each other, so that there is a problem that the degree of freedom of design is restricted.

The present invention has been made in view of the above circumstances, and it is possible to effectively prevent the legs of the load-bearing wall from being lifted by a simple hardware that fits in the plane of the load-bearing wall.
Moreover, it is an object of the present invention to provide a structure for preventing a bearing wall from being lifted up in a wooden building, which is excellent in both workability and design.

[0008]

According to the first aspect of the present invention, there is provided a structure for preventing a load-bearing wall from being lifted up in a wooden building according to the present invention. A lifting prevention metal fitting having a mounting piece that comes into contact with the frame and the lower frame is provided, and is fixed by driving a nail member into the vertical frame and the lower frame from the mounting piece side. is there.

The invention described in claim 2 is the first invention.
Wherein the nail member for fixing the lifting prevention metal to the lower frame is a screw nail, and the screw nail penetrates the lower frame and reaches a floor assembly supporting the lower frame. Is what you do.

[0010] In the lifting prevention structure according to the first or second aspect, the mounting piece of the lifting prevention metal is brought into contact with the vertical frame and the lower frame, and a nail member is provided at the intersection of the vertical frame and the lower frame. Since it is fixed, the lifting prevention hardware can effectively prevent the wall panel legs from floating during an earthquake, and the lifting prevention hardware is contained in the planes of the vertical frame and the lower frame. be able to. Further, the structure can be simplified as the metal member for preventing the floating, and the mounting is easy because the mounting does not require high precision.

Moreover, since it does not protrude to the outside, it is not necessary to make cutouts or the like for preventing interference with surrounding floorboards and the like, and there is no influence on the finishing material. further,
When mounting on the second and third floors, there is no need to mount hardware on the top of the load-bearing wall on the lower floor, so that the number of parts does not increase. In addition, since it is easy to remove, it is possible to simplify the work at the time of pattern change and disassembly.

[0012] In particular, according to the second aspect of the present invention, the mounting piece and the lower frame on the side on which the floating force acts during an earthquake are fixed with screws having excellent pull-out strength. Since the screw nail penetrates through the lower frame and reaches the floor supporting the same, it is possible to obtain a pull-out strength higher than that of a conventional flat metal product.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 3 show an embodiment of a structure for preventing a bearing wall from rising in a wooden building according to the present invention. In FIG. A lower frame 3 (not shown) of a wall panel (bearing wall) is provided via a floor plate 2 constructed on the top 1. In addition, this floor structure 1
The vertical frame 4 of the wall panel is erected on the lower frame 3 which is continuous with the horizontal intersection of the above.

At the corners of the lower frame 3 and the vertical frame 4 serving as the leg portions of the wall panel, a floating prevention metal member 5 is attached. This anti-lifting metal 5 is made of an equilateral angle steel (for example,
150 mm × 150 mm × 12 mm) is cut into a width dimension (for example, 85 mm) that can be accommodated in the lower frame 3 and the vertical frame 4, and a plurality of holes 6 for nails (6 in FIG. ), And holes 7 for screw nails are pierced at a plurality of locations (four locations in the figure) in the attachment piece 5b to the lower frame 3.

The lifting prevention metal member 5 has the mounting piece 5a abutting against the vertical frame 4, the mounting piece 5b abutting against the lower frame 3, and a nail (a nail member) inserted into the hole 6. 8 is driven into the vertical frame 4, and a screw nail (a nail member) 9 inserted through the hole 7 penetrates the lower frame 3 and the floor material 2, and further, a tip screw portion 9 a is screwed into the floor assembly 1. The lower frame 3 and the vertical frame 4 are fixed to the corners. After the floating prevention hardware 5 is fixed in this way, plywood (not shown) is struck with plywood (not shown) on both sides of the surface formed by the lower frame 3 and the vertical frame 4 to bear horizontal force (bearing wall). Is completed.

According to the structure for preventing the lifting of the load-bearing wall in the wooden building having the above-mentioned structure, the lifting-prevention hardware 5 can effectively prevent the lifting of the wall panel legs in the event of an earthquake, and also raises the surface. Since the anti-slip metal 5 fits within the planes of the vertical frame 4 and the lower frame 3, the design is excellent. In addition, since the structure of the lifting prevention hardware 5 is simple and does not require high accuracy for mounting and does not protrude to the outside, it is necessary to construct notches or the like to prevent interference with surrounding floorboards and the like. And does not affect the finish.

When mounting on the second and third floors, FIG.
It is not necessary to attach hardware to the top of the load-bearing wall on the lower floor as in the case of using the hole-down hardware shown in FIG. As described above, the use of the floating prevention metal member 5 makes it extremely easy to perform the work and also facilitates the removal, so that the work at the time of pattern change and disassembly can be simplified. In addition, since the mounting piece 5b of the lifting prevention metal piece 5 to which a lifting force acts during an earthquake is fixed by the screw 9 reaching from the lower frame 3 to the floor frame 1, FIG.
Can be obtained, and the rigidity of the frame constituted by the frame 3 and the vertical frame 4 can be increased.

In the above-described embodiment, only the case where an equilateral angle steel is cut is used as the floating prevention metal member 5, but the invention is not limited to this case. Various shapes can be used as long as they are provided with attachment pieces to the frame and the lower frame and can be accommodated within the plane defined by the vertical frame and the lower frame.

[0019]

As described above, claim 1 or claim 2
According to the lifting prevention structure of the load-bearing wall in the wooden building according to the present invention described in the above, the lifting of the wall panel legs during an earthquake can be effectively prevented by the lifting prevention hardware having a simple structure. In addition, the floating prevention metal can be accommodated in the planes of the vertical frame and the lower frame, and the mounting does not require high precision. In addition, since it does not protrude to the outside, it is not necessary to form a cutout or the like for preventing interference with the surrounding floor plate and the like, and there is no influence on the finishing material. As a result, it is excellent in both workability and designability.

In particular, according to the second aspect of the present invention, the mounting piece and the lower frame on the side on which the floating force acts during an earthquake are fixed with a screw nail having excellent pull-out strength. Since the screw nails penetrate the lower frame and reach the floor structure that supports the screw nails, it is possible to obtain a pull-out resistance higher than that of a conventional flat metal product.

[Brief description of the drawings]

FIGS. 1A and 1B are perspective views showing an embodiment of the present invention, wherein FIG. 1A shows a state before mounting hardware, and FIG.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a perspective view showing a conventional floating prevention structure.

FIG. 5 shows another conventional floating prevention structure.
(A) is a front view, (b) is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor set 2 Floor board 3 Lower frame 4 Vertical frame 5 Floating prevention hardware 5a, 5b Attachment piece part 6, 7 hole 8 Nail (nail member) 9 Screw nail (nail member)

Continued on the front page F term (reference) 2E002 FA03 LA02 LB02 LB13 LC02 2E125 AB12 AC23 BA55 BB05 CA77 EA17

Claims (2)

[Claims] An anti-lifting hardware having a mounting piece for contacting the vertical frame and the lower frame is disposed at an intersection of the vertical frame and the lower frame of the load-bearing wall of the wooden building. A structure for preventing lifting of a load-bearing wall in a wooden building, wherein the structure is fixed by driving nail members into the vertical frame and the lower frame from the side. 2. The nail member for fixing the floating prevention hardware to the lower frame is a screw nail, and the screw nail penetrates the lower frame to reach a floor assembly that supports the lower frame. The structure for preventing lifting of a load-bearing wall in a wooden building according to claim 1, wherein: