JP3217287B2 - Jig for load point reinforcement of structural members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is intended to reinforce a fulcrum and a load point which receives a concentrated load, particularly when an H-section steel is used as a structural member such as a beam of a temporary structure or a cut off of a stake. The present invention relates to a jig for reinforcing a load point of a structural member to be installed.

[0002]

2. Description of the Related Art In general, H-beams are widely used not only as beams and pillars of buildings and structures, but also as beams of temporary structures and cut-offs of landscaps. In particular, H-beams used as beam members are often reinforced with stiffeners so that they do not buckle under a concentrated load at fulcrums and load points. The safety technical guidelines for shoring in construction work specifically require such reinforcements.

Conventionally, this kind of reinforcement is performed by attaching a rectangular reinforcing plate 2 between the upper and lower flanges 1a, 1a of a fulcrum and a portion receiving a concentrated load, as shown in FIG. 2, for example. ing.

However, in such a reinforcing method, since the reinforcing plate 2 is integrally attached to the upper and lower flanges 1a of the H-shaped steel material 1 and the side portions of the web 1b, if the reinforcing plate 2 is fixed once, it is fixed. In addition to being unable to be easily removed, the position cannot be changed, and particularly in the case of leased products, there is a problem due to adverse effects such as welding heat.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and is intended to be used as a structural member such as a beam.
It is an object of the present invention to provide a structural material load point reinforcing jig capable of freely reinforcing a shaped steel.

[0006]

According to a first aspect of the present invention, there is provided a jig for reinforcing a load point of a structural member, the support nut being provided inside a flange of the structural member, and both ends between the support nut and the support nut. In a load member reinforcing jig for a structural member comprising a support bolt screwed and installed, a support plate having a rib engaged with an edge of the flange is interposed between the flange and the support nut, and The support plate and the support nut are welded.

According to a second aspect of the present invention, there is provided a jig for reinforcing a load point of a structural member according to the first aspect, wherein a wrench is provided at a central portion of the support bolt, and male screw portions on both upper and lower sides of the wrench are formed with reverse threads. This is to limit things.

According to a third aspect of the present invention, there is provided a jig for reinforcing a load point of a structural member according to the first or second aspect, wherein a locking nut for preventing the supporting nut from being loosened is screwed to the supporting bolt. is there.

[0009]

1 (a) to 1 (d) show an embodiment of the present invention. In the drawings, reference numeral 3 denotes an upper and lower flange 1a of an H-section steel 1 installed as a structural member such as a beam. ,
This is a load point reinforcing jig interposed between 1a to reinforce the fulcrum of the H-section steel 1 and a portion receiving a concentrated load.

The load point reinforcing jig 3 includes support nuts 3 installed inside the upper and lower flanges 1a, 1a of the H-section steel 1, respectively.
a, 3a, and support bolts 3b, which are vertically erected between the support nuts 3a, 3a by screwing upper ends thereof to the support nuts 3a, 3a, respectively. As the support bolt 3b, a bolt made of stainless steel or alloy steel, a PC steel rod having threaded ribs, or the like is used.

In such a configuration, the load point reinforcing jig 3 rotates one or both of the upper and lower support nuts 3a and presses the upper and lower flanges 1a, 3b to press the upper and lower flanges 1a, 3a.
It is set between 1a. The upper and lower support nuts 3a
A loosening nut (not shown) is screwed into the inside of the nut to double the upper and lower nuts, thereby preventing the supporting nut 3a from being loosened.

A support plate 3c is provided between one or both of the flanges 1a and the support nut 3a.
If it is attached by welding, the support bolt 3b can be installed in a more stable state between the upper and lower flanges 1a.

As shown in FIGS. 1B and 1D, a wrench 3d having a square or polygonal cross section is formed at the center of the support bolt 3b.
The male screw portions on the upper and lower portions may be formed with reverse screws.

With this configuration, when a wrench such as a wrench is hung on the spanner holder 3d and the support bolt 3b is turned through the wrench, both the upper and lower support nuts 3a, 3a move in the vertical direction at the same time. A jig can be set between the upper and lower flanges 1a, 1a with one touch.

Further, as shown in FIG.
If the rib 3e which engages with the edge of the flange 1a is protruded from the edge of the support nut 3, the upper support nut 3a or the support bolt 3
The co-rotation of the support plate 3c when turning b can be prevented.

Although the case where the load point of the H-section steel used as a structural member is reinforced has been described, the H
The present invention is not limited to the shape steel, and can be installed to reinforce a portion of another structural member which receives a concentrated load.

[0017]

According to the present invention, a jig for reinforcing a load point of a structural member according to the present invention has the above-described structure. Since the support nut is formed between the support nuts and the support bolts which are screwed into the support nuts at both ends, the fulcrum and the load point of the H-shaped steel can be reinforced very reliably while the structure is extremely simple. Since it is not fixed to the structural member by welding, repeated use and position change can be easily performed.

Further, there is no fear that welding heat or the like will adversely affect the structural member, and it is particularly suitable for a structural member of a lease.

[Brief description of the drawings]

1 (a), 1 (b), 1 (c) and 1 (d) are cross-sectional views of an H-section steel showing a mounted state of a load point reinforcing jig.

FIG. 2 is a cross-sectional view of an H-section steel showing an example of a conventional example for reinforcing a load point of the H-section steel.

[Explanation of symbols]

 1 ... H-shaped steel, 2 ... Reinforcement plate, 3 ... Load point reinforcement jig.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) E04C 5/01 E04C 3/04-3/06 E02D 17/04 E04B 1/24

Claims (3)

(57) [Claims] 1. A load point reinforcing jig for a structural member comprising a support nut provided inside a flange of a structural member, and a support bolt provided between the support nut by screwing both ends to the support nut. A support plate having a rib engaged with an edge of the flange is interposed between the flange and the support nut, and the support plate and the support nut are welded. A jig for reinforcing the load point of structural members. 2. The load point reinforcement of a structural member according to claim 1, wherein a wrench hook is provided at a center portion of the support bolt, and male screw portions on both upper and lower portions of the support bolt are formed with reverse threads. jig. 3. The load point reinforcing jig for a structural member according to claim 1, wherein a locking nut for preventing the supporting nut from loosening is screwed to the supporting bolt.