JP2600411Y2 - Column-beam joint structure - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention is used for connecting a column and a beam in a rigid frame structure, especially when a beam in one direction of the frame is made of a steel frame beam and a beam in another direction is made of a reinforced concrete beam. The present invention relates to a column-beam joint structure to be obtained.

[0002]

2. Description of the Related Art A conventional column member and a beam member made of H-shaped steel are joined by projecting a steel bracket having the same cross-sectional shape as the beam member on the side face of the joint portion of the column member, and by using the bracket and the web end surface of the beam member. The joining plate is brought into contact with the other end, and the joining plate, the side surface of the bracket and the end surface of the web are sewn with a high tension bolt and a nut.

[0003]

In such a conventional joint structure, it takes time and effort to attach the bracket to the column, and a large number of joint plates, high tension bolts and nuts are required to join the bracket and the beam member. Becomes
There is a problem that it takes time to join.

[0004] Further, when the whole is made of an H-beam, small beams are required, so that the number of pieces to be handled increases.
There is also a problem in work efficiency such as a decrease in efficiency of a crane or the like, and further, there is a problem such as an increase in cost because a fireproof coating is required.

This invention was conceived in order to solve the above-mentioned problems in the conventional joining structure. The purpose of the present invention is to use a joining plate and high tension bolts by adopting a steel U-shaped bracket. It is another object of the present invention to provide a new beam-column joint structure in which a beam in one direction can be a steel beam and a beam in another direction can be a reinforced concrete beam.

[0006]

A feature of the present invention for the above object is that a long U-shaped steel box having a flat bottom surface is installed at the top end of a column, and the column of the steel box is provided. The end protruding from the side of the body is used as a U-shaped bracket, and the end of a beam member made of H-shaped steel is inserted into the inside, and the beam member and the U-shaped bracket are integrated by joining concrete to form a unidirectional beam of the skeleton. On the other hand, beams are arranged at right and left sides of the steel box on the upper and lower surfaces of the column installation portion of the steel box, and beams in the other direction of the skeleton are constituted by reinforced concrete beams. It is in.

[0007]

[Operation] In the above configuration, the U-shaped bracket formed by the end of the steel box projecting from the side surface of the column and the end of the H-shaped steel inserted therein are joined to the joint concrete which is cast into the U-shaped bracket. To form a rigid frame.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawing, reference numeral 1 denotes a rectangular column made of reinforced concrete, and a required number of column bars 2 and 2 protrude at corners and a center of an in-plane periphery of a top end.

Reference numeral 3 denotes a long steel box having a U-shaped flat bottom surface and open ends at both ends. The steel box 3 has a length of about three times the column width, and has a column bar at the corner. A pair of H-shaped steel members 3a, 3a positioned at an interval that fits inside of the pair of H-shaped steel members 2, 2 and two members attached by welding over the ends of the pair of H-shaped steel members 3a, 3a having a length substantially equal to the column width. It consists of steel bottom plates 3b, 3b. Reference numerals 4 and 5 denote a plurality of beam bars arranged on the upper and lower surfaces of the column installation portion of the steel box 3 at right angles to the steel box 3.

Reference numeral 6 denotes a groove-shaped half-precast concrete beam member (referred to as a PC beam member) having a ready-made side surface and a bottom surface, which is completed by arranging reinforcement inside and then pouring concrete. 7 is a beam member made of H-shaped steel.

The beam member 7 is joined to the column 1 by first suspending the PC beam member 6 in the direction of the spar and setting the end to the column 1.
And fix it on the top edge of Next, the steel box 3
Is suspended in the direction of a large span, and the central portion without the bottom plate 3b is set on the top surface and fixed from above the column. As a result, both ends of the steel box 3 project from the side of the column and extend in the large span direction.
The mold brackets 8 are provided. In addition, the installation of the steel box 3 allows the beam bars 4 and 5 to be accommodated inside the PC beam member 6 that was previously constructed.

When the construction of the U-shaped brackets 8 and 8 is completed, the beam member 7 is suspended in the direction of a large span, and the ends are inserted into the H-shaped steels 3a and 3a of the U-shaped bracket 8 from above. support. After that, joint concrete 9
Into the U-shaped bracket 8 to rigidly integrate the beam member 7 and the U-shaped bracket 8. Thereby, the beam in the large span direction of the skeleton becomes the steel frame beam 10.

The PC beam member 6 in the girder direction is not shown in the figure, but after arranging the inside and joining with the beam bars 4 and 5, a half precast concrete floor plate 12 is installed thereon. Furthermore, the reinforced concrete beam 11 integrated with the floor is completed by placing the floor concrete.

Accordingly, the joints of both the completed large span steel beam 10 and the reinforced concrete beam 11 in the girder direction have a rigid frame structure.

The reinforcement of the beam reinforcements 4 and 5 is a steel box 3
May be installed on the top of the column and then passed above and below the H-section steels 3a, 3a, or the beam may be completed in the direction of the large span after the girder direction is preceded.

[0016]

According to the invention, as described above, a long U-shaped steel box having a flat bottom surface is installed on the top surface of the column, and the U-shaped bracket is provided with an end protruding from the side surface of the column. None, the end of the H-shaped steel beam member was received by the U-shaped bracket and integrated by joining concrete, so the construction of the bracket became easier than before, and the joining work was incomparable with bolting Since the joining work can be simplified, the joining work progresses, and the workability is remarkably improved in combination with the decrease in the amount of the joining member used.

Also, the beam in the large span direction of the skeleton is made into a steel frame beam by integrating the beam member made of H-shaped steel and the U-shaped bracket by concrete, and the steel box is provided on the upper and lower surfaces of the column installation portion of the steel box. The joints with beam reinforcements arranged at right angles to the box body allow the beams in the girder direction of the skeleton to be reinforced concrete beams. The labor and cost required can be reduced, which leads to labor saving and cost reduction.

The construction of the U-shaped bracket can be applied not only to reinforced concrete columns, but also to precast concrete columns, and it has features such as a very good joint structure of column and beam having a rigid frame structure.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of a beam-column joint structure according to the present invention.

FIG. 2 is a front view showing a part of the above in a longitudinal section.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of a steel box.

FIG. 5 is a schematic plan view of a skeleton.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Column body 2 Column reinforcement 3 Steel box 3a H-shaped steel 3b Bottom plate 4 Beam reinforcement (upper) 5 Beam reinforcement (lower) 6 PC beam member 7 H-beam member 8 U-shaped bracket 9 Joint concrete 10 Steel beam 11 Reinforced concrete beams

Claims (1)

(57) [Scope of request for utility model registration] 1. A U-shaped and long steel box having a flat bottom is installed at the top end of a column, and the end of the steel box protruding from the side of the column is formed as a U-shaped bracket. Then, the end of the beam member made of H-shaped steel is inserted into the frame, and the beam member and the U-shaped bracket are integrated by joining concrete to form a one-way beam of the skeleton as a steel frame beam. A beam-column joint structure in which beam bars are arranged on the upper and lower surfaces of the portion at right angles to the steel box, and beams in the other direction of the frame are made of reinforced concrete beams.