JPS58774B2 - Reinforcement structure of joint part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reinforcement structure for a joint part of a steel-framed concrete or steel-framed reinforced concrete column.

More specifically, the present invention relates to a reinforcing structure for a joint portion of a steel-framed concrete or steel-framed reinforced concrete column made of a non-glare type steel column formed by opposing shaped steel or flat steel.

Hereinafter, steel frame concrete will be abbreviated as SC, and steel reinforced concrete will be abbreviated as SRC.

Conventionally, in SC or SRC columns made of non-glare type steel columns in which the steel column chords are formed by opposing shaped steel or flat steel, the chords are connected by plate welding, high-tension bolts, etc., and then filled with concrete. However, since the adhesion force between the steel frame and concrete is small, integration is difficult, and even if the chords are connected in a fairly complex manner, the shear stress and bending stress generated in the beam cannot be transferred to the steel frame. Unable to communicate adequately.

For this reason, both sides are often connected directly or through a steel band to form a split box type light membrane type steel frame column.

However, when using this method, a large amount of steel material processing cost is required, and the integrity and filling properties of the concrete are poor.

The object of the present invention is to provide an SC or SRC structure consisting of a non-glare type steel column in which shaped steel or flat steel is opposed to each other as the steel column chord material.
To provide a structure for reinforcing a joint part of a column so that shear stress and bending stress generated in a beam can be sufficiently transmitted to a steel frame.

The reinforcing structure of the joint part of an SC or SRC column according to the present invention consists of two channel steels or flat bars facing each other at a certain interval to serve as the chord members of the steel column. Stinuffs of reinforcing members are horizontally welded to the edges, and the stiffenuffs welded to the opposing chord members are spaced at a constant interval, and further, the upper and lower edges of the side edges of the string joints have a constant length. The opposing chord members are connected by welding the ends of the tie plates of the reinforcing member, and furthermore, the upper edge of one chord member's joint part is inclined toward the lower edge of the opposite chord member's joint part. The invention is characterized in that two reinforcing strips are crossed in an X-shape and welded to each other at the intersection, and each end of the reinforcing strip is welded to the stiffener.

The transmission of force in the joint section constructed according to the present invention will be explained based on FIG. 1 which is a principle diagram.

When the tie plate receives a shearing core force in the direction of the arrow, it is transmitted from the string material 1 to the string material 1 by the tie plate 2, and since the tie plate 2 and the tie plate 2 are provided on the same surface, the shear core force is applied to the opposing chord material 1 shown by diagonal lines. The concrete sandwiched between the two Mechifunas transmits shear force through its compressive force.

In addition, reinforcing strips 4 are welded at both ends to the concrete parts shown by diagonal lines, so that the reinforcing strips 4 are integrated with the concrete in the shaded parts and can sufficiently transmit shear force. .

The concrete portion shown by the dotted line and the reinforcing strip 4 placed there become effective when shear force is generated from the opposite side.

The present invention will be explained below based on drawings of embodiments.

FIG. 2 is a perspective view of a steel frame portion of an embodiment of a joint portion reinforced by the method of the present invention, and FIG. 3 is a perspective view of an embodiment of a reinforcing member.

In this invention, two channel steels or flat bars are made to face each other and are used as the chord members of a steel column.

In the illustrated embodiment, two channel steels are used as the chord members 1.

The string material 1 may be other shaped steel, such as an H-shaped steel or an angle steel (two angle steels are used as each chord material).

) can be used similarly.

The reinforcing member consists of two symmetrical reinforcing strips 4 which are crossed in an X-shape and welded together.

The reinforcing strips 4 may be welded together by simple welding.

Mechifuna 3 are welded to both ends of the reinforcing band plate 4.

When the reinforcing member is clamped at the joint part of the string material 1, the reinforcing strip plate 40 surface approximately coincides with the generally central vertical plane of the beam, and the mesh nuff 3 fits at right angles to the inside of the string material 1, The reinforcing member is designed and manufactured so that the reinforcing strip 4 is positioned obliquely from the upper edge of the joint part of one chord member 1 toward the lower edge of the opposing chord member 1.

In the present invention, the reinforcing member is placed between the string members 1 at the joint portions, and the hooks 3 are welded to the upper and lower edges of the inner joint portions of the string members 1.

It is desirable to provide a notch 3a at the corner of the metal filler 3 in contact with the channel steel in order to improve filling with poured concrete.

Next, both side edges of the side members 1 and 10 are connected by a tie plate 2 at the upper and lower edges of the joint portion.

The reinforcing structure for the joint portion of the present invention is constructed as described above.

The shape of the reinforcing member is simple, and the machining accuracy is sufficient even if it is relatively low, so it is easy to manufacture and the machining cost is low.

Further, welding for attaching the reinforcing member and connecting the string members can be easily performed through the gaps between the string members.

In addition, since it is a non-glare type steel frame, it is possible to fill it with concrete uniformly, and it is possible to integrate it with the steel frame.

Furthermore, according to the present invention, the processing and assembly work is simple, the steel frame and concrete can be integrated, and the compressive force of concrete can be effectively used for transmitting shear force and bending moment. Since the reinforcing strip is placed on the concrete part, the concrete is reinforced and the joint strength can be ensured.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the principle of force transmission in a joint part constructed according to the present invention, Fig. 2 is a perspective view of a steel frame section of an embodiment of a joint part reinforced according to the present invention, and Fig. 3 is a reinforcing member. FIG. In the drawings, 1 is a string member, 2 is a tie plate, 3 is a metal hook, and 4 is a reinforcing band plate.

Claims (1)

[Claims] 12 pieces of thin steel or flat steel are made to face each other at regular intervals to form the chord members of a steel frame column, and reinforcing members are horizontally welded to the upper and lower edges of the inner side of the chord joints, and The mesh welded to the opposing chord members is spaced at a constant interval,
Furthermore, by welding the ends of the tie plate of the reinforcing member having a certain length to the upper and lower edges of the side edges of the string joint part, respectively, the opposing chord members are connected, and furthermore, one of the string members Two reinforcing strips, which are inclined from the upper edge of the material joint part toward the lower edge of the other opposing chord material joint part, are crossed in an X shape, and are welded to each other at the crossing part, and each of the reinforcing strip plates is A reinforcing structure for a joint part of a steel-framed concrete or steel-framed reinforced concrete column, characterized in that the end part is welded to the metal pipe.