JPH0612083Y2 - Steel frame, reinforced concrete connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to a joint structure used for steel frames and reinforced concrete structures.

(Prior Art) Conventionally, a through hole is formed in a beam steel frame composed of an H-shaped steel material or a web plate for forming a pillar or a beam, and a hoop muscle is penetrated through the through hole, and the welded portion is welded. There are many things that have been done, so the thermal mechanical strength of the girder steel frame itself decreases,
In addition, there is a drawback that the work of passing the reinforcing bar and the hoop bar is complicated at the work site, and it is difficult to secure the correct bar arrangement method.

(Technical problem) Therefore, the present invention has been made in view of the drawbacks of the prior art, and provides an accurate bar arrangement method without impairing the thermal mechanical strength of a beam steel frame made of an H-shaped steel material or a web plate. It is a technical issue to secure the structure and to eliminate the complexity of the assembly work on site.

(Technical Means) In the present invention, in order to solve the above technical problems, in a steel frame reinforced concrete structure, a web plate is welded to an appropriate predetermined portion of an H-shaped steel material and is bent in advance to an appropriate position of the web plate. The deformed hoop muscle is stud welded with a stud welding gun using an appropriate jig, and then the bending deformation portion of the hoop muscle is bundled to be wound around the main muscle to form a joint structure main body, and this joint structure It is a combination of a main body and concrete. Specifically, it has the following configuration based on the embodiment shown in the drawings (FIGS. 1 to 3).

In most cases, steel materials with an H-shaped cross section are mainly used as the foundation material of concrete buildings, but not limited to this, other angles, channels or T
It is needless to say that a die steel such as a die, a cross or the like, or an H-shaped steel section having a plate shape may be used. In this embodiment, a steel material having an H-shaped cross section is adopted as the beam material and the pillar material.

Reference numeral 1 is a main body of a joint structure used in a steel-framed reinforced concrete building. 2 is an H-shaped steel material, and the axis of symmetry A in its cross section
Along the B and B directions, the steel plate flat web plates 3 and 4 are vertically welded to each other to make the cross section substantially It is formed in a mold. This web plate (3,4)
By welding and fixing to the H-shaped steel material, it is possible to arrange the hoop streaks on the outer periphery of the H-shaped steel material. 5 is the shape A hoop streak formed in a mold, and a stud welding gun (not shown) using a predetermined jig at the symmetrical positions of the web plate 3 above and below the longitudinal direction so that the base portion 5B stands upright with respect to the web plate 3. Is the stud welding P. 6
Is the same shape A hoop streak formed by bending in a mold, and a stud welding gun (not shown) using a predetermined jig at the symmetrical positions of the upper and lower web plates 4 with respect to the web plate 4 The base portions 6B are stud welded so as to be positioned upright and alternately with respect to the hoop streaks 5 of the longitudinal web plate 3. By stud welding the hoop muscles to the web plates (3, 4) in this manner, the positioning of the hoop muscles with respect to the main muscles is determined. Then, the hoop muscles (5, 6) are attached to the web plate (3, 4) as described above.
Since the web plate (3, 4) is not provided with any perforations for passing hoop muscles only by stud welding to surround the shaped steel material 2, work on site is not complicated, and the web The thermomechanical strength of the plates (3,4) themselves can also be maintained.

Reference numerals 7 and 8 denote main bars arranged around the corners of the H-shaped steel material 2. The main bars 7 have a bent portion 5A of the hoop muscles 5 suspended and partially wound around the main bars 8. Holds the bent portion 6A of the hoop muscle 6 and partially winds it, and then binds the main muscles (7, 8) and the hoop muscles (5, 6) with a binding wire 12.

Reference numeral 9 denotes main bars arranged at four corners around the H-shaped steel material 2, and outer hoop muscles 10 are wound so as to surround the main bars 9 and the main bars (7, 8).

Thus, the joint structure body 1 is formed as shown in FIGS. 1 and 2. Reference numeral 11 is a slag formed at the time of stud welding, and 13 is a concrete frame.

(Operation) The above technical means operates as follows.

First, weld the web plate (3, 4) to the H-shaped steel material 2 Form into a mold.

Then, make the web plates (3, 4) roughly symmetrical so that they are symmetrical to each other. The hoop muscles (5, 6) flexibly deformed into a mold are alternately stud welded, and the respective bent portions (5A, 6A) of the hoop muscles (5, 6) are wound around the main muscles (7, 8), respectively. Assemble Next, the wires 12 are tied together.

Furthermore, the hoop reinforcements 10 are looped so that the main reinforcements 9 arranged at the four corners of the periphery surround the outer circumference of the H-shaped steel material 2.
Is wound on a plurality of places to complete the assembling. Thus, the joint structure body 1 is formed as shown in FIG. 1, and finally, concrete Co is poured into the concrete frame 13 to obtain a reinforced steel concrete structure having excellent strength.

(Effect) Therefore, the present invention has the following unique effects. In particular, the existing H-shaped steel material, T-shaped steel material, cross-shaped steel material or the like is pre-welded with the web plate, and then the web plate is pre-bently deformed with a plurality of hoop studs to be stud welded. Therefore, it is not necessary to purposely form perforations in the web plate, and an accurate bar arrangement can be obtained without any hindrance due to the bending state of the hoop muscles, and the thermal and mechanical strength of the web plate itself is always maintained. There is an advantage that work can be performed smoothly at the work site.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention.
The figure is a perspective view showing a main part of the joint structure body, and FIG. 2 is a plan view of the same, showing a part of concrete, and most of the concrete is omitted. FIG. 3 is a plan view of an essential part showing a mounted state of the hoop muscle. 2 ... H type steel material, 3,4 ... Web plate 5,6 ... Hoop bar, 7,8 ... Main bar

Claims (1)

[Scope of utility model registration request] 1. A plurality of web plates (3, 4) are welded to a steel material such as an H-shaped steel material 2, a T-shaped steel material, and a cross-shaped steel material, and the bent portions (5A, 5A,
6A) has a hoop muscle (5, 6) base (5B, 6)
B) is subjected to stud welding P, while the bent portion (5A, 6)
A) a steel frame characterized in that A) is wound around the main bars (7, 8) and bound by a binding wire 12 to form a joint structure body 1, and the joint structure body and concrete Co are joined.
Reinforced concrete connection structure