JP2002242338A - Wooden framework bearing wall constituted of diagonally crossed braces fixed to fixtures - Google Patents

Abstract

PROBLEM TO BE SOLVED: To impart large flexibility to the floor plan of a house, and to simplify structural design and construction work in the field, by simplifying braces, joint metals, and hold-down fasteners which are available in a wooden framework construction method, positively transmitting external forces to a foundation, and reducing the number of the hold-down fasteners to be set. SOLUTION: The brace is directly connected to an anchor bolt also functioning to fix the foundation, which simplifies the joint portion of the brace, whereby external forces are positively transmitted to the foundation. In this case, external drawing forces from an immediately upper story is not imposed on a column but is transmitted directly to the foundation. Therefore, column drawing force is reduced. When drawing forces are generated, the hold-down fastener for bearing the drawing forces is bolt-connected to the joint portion of the brace. Alternatively, there is provided a fixture integrating a brace fixture with the hold-down fastener. The single anchor bolt functions concurrently as a fixing bolt for the brace, a fixing bolt for the hole-down fastener, and a foundation fixing bolt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a structural load-bearing wall of a wooden frame construction method.

[0002]

[Prior Art] The Building Standards Law permits the use of reinforcing bars. There are also technical regulations for fixing method and fitting.

According to "Ministry of Construction Notification No. 1460", reinforcing bars are fixed to pillars and bases with nails or fixed to nuts with triangular washers through pillars and bases with steel plate attached plates.

[0004] Regarding the connection of columns, beams and foundations of load-bearing walls, the construction is to be fixed to the foundation or foundation so that the columns will not be pulled out with hole-down hardware etc. in "Ministry of Construction Notification No. 1460".

[0005]

SUMMARY OF THE INVENTION In the case of a reinforcing rod bracing with a steel plate attached plate, the method of transmitting external force such as seismic force to a column and a base before transmitting it to the foundation and then transmitting it to the foundation increases the number of joints and is limited. Eight nails are concentrated in the area, so the base and pillars are easily broken. There are also problems such as the durability of nails. In the notice, the specification shape of the steel plate is not specified.

In the case of fixing a nut with a triangular washer, it is necessary to penetrate and attach the column in accordance with the angle of the brace diagonal, and to securely connect the column to the base, beam and foundation. In the notice, the specification shape of the triangle washer is not specified. In addition, in the case of the above-mentioned joint, it is necessary to devise a method such as carving the metal in order to avoid that the metal interferes with the finishing material and the finish is not uneven.

[0007] Hole down hardware is required depending on the wall magnification regardless of whether the reinforcement is braided or not. The direct connection between the foundation and the hole-down hardware requires high-precision construction for alignment.

[0008]

Means for Solving the Problems By connecting the bracing to a single anchor bolt which also serves as a fixing of the base via a metal member, the joint can be simplified and the external force can be reliably transmitted to the foundation. Become. In this case, the pull-out force from the upper floor is transmitted directly to the foundation, not to the pillar. Therefore, the pull-out force of the pillar is reduced. When pull-out force is generated, bolt-down metal fittings that bear the pull-out force are joined to the joint of the bracing. There are also hardware that integrates bracing hardware and hole-down hardware. The anchor bolt for the bracing hardware, the bolt for fixing the hole-down hardware, and the bolt for fixing the base are all shared by one anchor bolt.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION U-shaped metal fittings are provided on the upper and lower sides, and the upper part is connected to the beam near the column by bolts, and the lower part is connected to the anchor bolt with the base sandwiched between the foundations near the column. C-shaped metal fittings with long nuts are bolted to the rising parts of these upper and lower U-shaped metal fittings, and reinforcing steel braces are attached to form a bearing wall. To ensure that external forces such as seismic force are transmitted to the foundation, the position of the joint bolts on the rebar braces should be as small as possible. The joint between the U-shaped hardware and the anchor bolt is a long hole or a large hole, and the position can be adjusted within that range. The shape of the metal can be T-shaped or L-shaped in addition to the U-shaped shape.

[0010] When a pull-out force acts on the column, cover the column-shaped end of the above-mentioned U-shaped metal with a hole-down metal with a long hole for position adjustment and join it with a bolt to prevent the column from being pulled out. This hole-down metal is connected to the anchor bolt and metal through the metal, so the pull-out force is transmitted to the foundation. It is also possible to consider hardware that integrates hole-down hardware and U-shaped hardware.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The upper and lower U-shaped metal parts have exactly the same shape, and three bolt holes for connection are formed. The bolt holes on the bottom surface are connected to a beam or a base by bolts or anchor bolts, and two other reinforcing bars are used. Join the C-shaped hardware with long nuts with bolts. The hole on the base side of the U-shaped hardware may be a long hole or a large hole in consideration of construction accuracy. In some cases, holes such as lag screws that can bear the shearing force may be drilled to strengthen the connection with the base and beams. The upper and lower U-shaped hardware is fixed to the foundation or beam and does not rotate.

When a pull-out force is applied to the pillar, bolt the joint so that the hole-down metal fitting is placed over the outside of the U-shaped metal fitting. Then, it is joined to the pillar with a lag screw. There is also one piece of hardware that combines the functions of U-shaped hardware and hole-down hardware.

[0013]

[Effect of the Invention] At present, measures to prevent column pull-out by installing hole-down hardware etc. at the joints of braces are required by the Building Standards Law, and reliable and hassle-free construction is desired. In this method, the load-bearing wall can be freely arranged, and the connection with the hole-down hardware can be easily performed. Since the depth dimension of the braced part is small, it can be used even with the makabe method. The pull-out force due to the external force on the upper floor is not transmitted to the column but directly to the foundation, and the pull-out force of the column is smaller than the conventional joining method, resulting in a significant reduction in the number of hole-down hardware.

Even when a large earthquake or the like occurs, the joint metal part is strong, so that the toughness of the shaft portion of the reinforcing bar does not cause sudden collapse. In addition, the rebar braces have almost no effect on columns, beams, and foundations, so restoration work after an earthquake can be re-established by replacing the rebar braces and retightening bolts to restore the tilted building to its original position. You. Bracing and hole-down hardware can be placed between pillars with bracing, allowing sweeping sashes to be placed freely and free layout.

[Brief description of the drawings]

FIG. 1 is an elevation view of a load-bearing wall.

FIG. 2 is a partial perspective view of a U-shaped hardware.

FIG. 3 is a perspective view when a U-shaped hardware and a hole-down hardware are attached.

FIG. 4 is a perspective view when a U-shaped metal part and a hole-down metal part are integrated.

FIG. 5 is a perspective view when an L-shaped hardware and a hole-down hardware are integrated.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column 2 Beam 3 Base 4 Reinforcement bracing 5 C-shaped hardware with long nut 6 U-shaped hardware 7 Hole-down hardware 8 U-shaped hardware and integrated hardware of hardware and hole-down hardware 9 Anchor bolt 10 Foundation 11 Bolt 12 L 12 L Integrated hardware of hardware and hole-down hardware 13 Reinforced bracing with turnbuckle

Continued on front page F-term (reference) 2E002 FA02 FA03 FB07 GA02 HA02 HB02 JA01 JA02 JB02 LA01 LB01 LC02 MA04 MA12 2E125 AA04 AA14 AA18 AA33 AB12 AB13 AC07 AC23 AG11 AG12 AG41 BB09 BB11 BB16 BB18 BB22 CA01 BC03 CA01 BE01

Claims (3)

[Claims] 1. A metal part whose upper part is fixed to a beam with bolts or the like,
In the case of a base, the lower part is an anchor bolt, and in the case of a beam, it is a reinforcing steel bar that is bolted to hardware fixed with bolts, etc.
A load-bearing wall provided between columns and between beams and bases or between beams so that external forces applied to the building are reliably transmitted to the foundation. 2. A hole-down metal fitting is attached to the metal fitting of claim 1, and the column is fixed to the column with bolts or the like from the side so as to be able to resist pulling out of the column, and between the beam and the base or between the beam and the beam. A load-bearing wall to be provided. 3. A hardware in which the hardware of claim 1 and the hole-down hardware of claim 2 are integrated with each other so that the rising portion of the brace is mounted on one or both sides to prevent the column from being pulled out more reliably. Bearing walls provided between the columns and between the beams and the base or between the beams.