JPH0988234A - Steel-strip diagonal bracing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To execute the earthquake-resisting repair of an existing building easily by nailing a diagonal bracing body, in which square-shaped stop plates are fixed at both end sections of a steel strip, and a hold-down plate superposed on the stop plates for increasing the strength of nails. SOLUTION: This diagonal bracing is installed onto the side face of the square-shaped framework of a wall in a diagonal shape, and the tensile force of the diagonal bracing resists horizontal load received by a building and the execution of works is facilitated. When this diagonal bracing is used for repairing an existing building, old sheathing materials such as mortar need not be removed, and the diagonal bracing can be mounted from the upper section of these sheathing materials. Nails and wood screws driven to framework materials 4-7 while being simultaneously penetrated to hold-down plates 2a, 2b and the stop plate B receive double shearing force, and the large strength of the diagonal bracing is obtained by a small number of the nails. The stop plate B is formed in a square shape and nail holes are disposed diagonally and symmetrically, diagonal bracing bodies 1 are used for a rear and a surface and the directions of the hold-down plates 2a, 2b are changed and employed, and the number of parts is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to braces used for wooden construction. The braces are to be attached to the side surface of the framework, and when used for the renovation of an existing building, they can be attached from an old exterior material such as mortar.

[0002]

2. Description of the Related Art Conventionally, the braces used in wooden constructions include thick braces, thin braces, round steel braces and steel strip braces.

[0003]

The conventional braces used in wooden construction are troublesome to construct because the diagonal braces are put inside the quadrilateral framework, and the construction is difficult to use. There may be restrictions. For example, studs attached to the inside of the same quadrilateral framing must have notches at the portions that intersect the braces, or braces cannot be placed across the pipe columns. As a result, due to the lack of understanding by craftsmen, the braces are not performing their performance properly at many sites without proper construction. Many experts have pointed out that one of the causes of the damage to buildings caused by the Great Hanshin Earthquake in January 1995 is the lack of bracing for wooden houses. As is well known. In order to improve the current situation, it is necessary to provide braces that are easier to use and that can be easily installed and installed on existing buildings and that can improve the bearing capacity of the buildings. .

The problem to be solved by the present invention lies in what kind of means should be taken to solve such a problem.

[0005]

In order to solve such a problem, the present invention proposes the following brace. First, in order to eliminate the inconvenience of inserting the inside of a conventional quadrilateral framing, a steel strip and a steel plate having a thickness of 1 mm to 3 mm are used as a material, and the side of the framing such as a foundation, a pillar, a body difference, and eaves girders is used. It was made to join from the part with a nail or a wood screw.

[0006] Next, the steel strip is composed of a bracing main body in which stopper plates are fixed to both ends of the steel strip and a pressing plate, and a part of the pressing plate is superposed on the tip of the stopper plate to fix it with nails or wood screws. The nail or wood screw was subjected to a two-sided shearing force.

[0007]

As shown in FIG. 1, the braces are diagonally attached to the side surfaces of the quadrilateral frame of the wall to resist the pulling force against the horizontal load received by the building. Since it does not require processing such as notching into the frame assembly, construction is extremely easy and when using it for renovating existing buildings, remove old exterior materials such as mortar from above them without removing them. Can be installed.

Further, as shown in FIGS. 4 and 5, the pressing plates (2a, 2b) and the stopper plate (B) are simultaneously penetrated and driven into the shaft assembly (4, 5, 6, 7). Since the broken nail or wood screw (3a) is subjected to the shearing force on two sides, it is possible to obtain a large proof strength of the braces with a small number of nails.

Further, since the stopper plate (B) has a square shape and the nail holes (1a, 2a) are provided diagonally symmetrically, the bracing main body (1) can be used on the back and front. ,
Since the pressing plate can be used by changing the directions of 90 °, 180 ° and 270 °, the number of members can be reduced.

[0010]

EXAMPLES Examples will be described with reference to the drawings.
FIG. 1 is an explanatory view showing a usage example in which the steel strip braces according to the present invention are used for an outer peripheral wall of mortar finish. (1) is a bracing main body, which is a steel strip (A) having square stopper plates (B) fixed to both ends thereof. The length of the brace body (1) is 2880 mm and 3280 mm as standard,
The angle between the steel strip (A) and the stop plate (B) is 18.4 ° and 3
The standard is 3.7 °. The former is the horizontal wall length of 9
10 mm, and the latter corresponds to a horizontal wall length of 1820 mm, the wall height in this case being 2 mm
730 mm. The bracing main body (1) is diagonally arranged on the shaft of the wall structure, and the pressing plates (2a, 2b) are aligned by aligning the positions of the nail holes with the tips of the stop plates (B) at both ends. Place and nail.

FIG. 2 is an explanatory view showing a nailed state when one stopper plate is individually attached. (A) is a steel strip, (B) is a stop plate, and (C) is a welded portion. The nail hole (1a) of the retaining plate (B) and the nail hole (2 of the pressing plate (2a))
Overlap with a) and fix with nails. (5) is a pillar, (6)
Is a body difference, 8 is a wood slide, (9) is a waterproof sheet, and (10) is mortar.

FIG. 3 is an explanatory view showing the state of nailing when two stopper plates are butted against each other and attached.

FIG. 4 is a vertical sectional view of the joint portion shown in FIG. When a building receives a horizontal load due to an earthquake or the like and a tensile stress is applied to the steel strip braces, a downward tensile force acts on the steel strip (A) and the retaining plate (B),
A pulling force acts upward in the figure on the body composed of the pressing plate (2a), the body difference (6), the lath (8) and the mortar (10). As a result, the nail (3a) is subjected to a two-sided shearing force, and exhibits a shear proof force almost twice as large as that in the case where the nail (3a) is subjected to a one-sided shearing force.

FIG. 5 is a vertical sectional view of the joint portion shown in FIG.

[0015]

Since the present invention is constructed as described above, it has the following effects.

[0016] Since it is not necessary to perform processing such as notching into the frame assembly, the construction is easy.

Further, since it is possible to attach old exterior materials such as mortar without removing them, it is easy to take measures for improving the seismic resistance of existing buildings.

Further, it is possible to reduce the number of nails and the number of members.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage example in which a steel strip bracing is used for an outer peripheral wall of a mortar finish.

FIG. 2 is an explanatory diagram showing a nailed state.

FIG. 3 is an explanatory view showing a nailed state.

FIG. 4 is a vertical cross-sectional view of the joining portion shown in FIG.

5 is a vertical cross-sectional view of the joining portion shown in FIG.

[Explanation of symbols]

 1 Steel strip streak A Steel strip B Stop plate 2 A Press plate 2 B Press plate 1a Nail hole 2a Nail hole 2a Nail hole 3a Nail 3b Nail 4 Base 5 Pillar 6 Body difference 7 Eaves girder 11 Cloth foundation

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area E04B 2/56 651 E04B 2/56 651A 652 652J E04G 23/02 E04G 23/02 E

Claims (1)

[Claims] 1. A bracing main body (1) having square-shaped stopper plates (B) fixed to both ends of a steel strip (A), and stopper plates (B).
The pressure plate (2a, 2
B) and a stop plate (B) and a pressure plate (2)
In the overlapping portion of (a, 2b), a plurality of nail holes (1a, 2a) are provided in diagonally symmetrical positions at positions where they overlap each other, and other than the overlapping portion of the pressing plate (2a, 2b). The steel strip braces characterized in that a plurality of nail holes (2b) are provided at arbitrary positions in the portion.