JPH06322820A - Connection part structure of precast concrete column and beam - Google Patents

Abstract

PURPOSE:To improve workability by insulating on a column top a PC beam provided with key-state parts which include at the end a connection reinforcing bar of a beam end and by engaging a restricting material. CONSTITUTION:Key-state parts 1 are arranged crossing a beam skeleton at connection ends of PC beams B, connection ends of a beam bars are included by these key-state parts 1. Then, hoop-state restricting materials C are mounted on a column top of a PC column so that they surround an outer circumference of the column, and the PC beams B are engaged with the inner side of the hoop-state restricting material C so that lower halves of the end key-state parts 1 are brought into contact with each other. After the upper hoop-state restricting material C is engaged with the upper halves of the key-state parts 1, a post-cast concrete D is placed in a clearance of the column-beam connection. Thus, the PC column-beam connection can be constituted rigidly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete column / beam (hereinafter referred to as PC column / beam) joint structure.

[0002]

2. Description of the Related Art Conventionally, when joining PC columns and beams, the PC columns A and B having the columns and beam rebars a and b to be fixed in place in the cast-in-place joints are previously projected at the end portions of the members. After assembling so that the bar arrangement fits well, after arranging the stirrups c, ribs, etc. in the joint, grout material or ready-mixed concrete is placed in the joint to form the PC pillar A and the PC beam B. It is to join.

[0003]

In the above-mentioned prior art, it takes a lot of time and effort to assemble and assemble the reinforcing bars protruding from the material ends of the PC column / beam members so as not to interfere with each other and to be intertwined with each other. It took time. In addition, there is a problem in that the cross-section of the pillar / beam member is restricted by the way in which the reinforcing bars fit inside the pillar / beam joint, that is, the arrangement of the reinforcing bars.

The present invention has been proposed in view of the above-mentioned problems of the prior art. The object of the present invention is to provide a PC-column-beam joint structure which is structurally rational with improved workability. There is a point to do.

[0005]

In order to achieve the above-mentioned object, a PC column-beam joint structure according to the present invention has a beam end portion which is vertically provided so as to be orthogonal to the beam frame body and which is vertically projected. The precast concrete beam is laid on the pillar head so that the key-shaped parts of each beam touch each other so that the key-shaped parts that include the bonded reinforcing bars touch each other, and the bamboo-like shape extends over the key-shaped parts of each beam. The restraint material is fitted and configured.

[0006]

According to the present invention, the PC beam is constructed by vertically projecting a key-shaped portion including a joint reinforcing bar of the beam at the beam end portion in the vertical direction so as to be orthogonal to the beam frame. The key-shaped portions of the respective PC beams are arranged on the pillar heads of the above so as to be in contact with each other, and the bail-like restraint member is fitted over the respective key-shaped portions, whereby the end keys of the respective PC beams are The joint portion of the PC column / beam is constrained by the broom-shaped portion against the restraining material,
The beam is integrally joined.

[0007]

The present invention will be described below with reference to the illustrated embodiments. A is a PC column, B is a PC beam, and a key-shaped portion 1 which is vertically projecting in the vertical direction orthogonal to the beam frame is provided at the joint end of the beam B. The joint end portion 2a of the beam 2 is included. In the figure, 3 is a rib.

C is a baffle restraint, which is placed on the column head of the column A so as to surround the outer circumference of the column, and P is placed inside the baffle restraint C.
The C-beam B is fitted so that the lower halves of the end key portions 1 are in contact with each other, and the upper bail-shaped restraint C is fitted on the upper half portion of the key portion 1, and then the pillar / beam. The post-casting concrete D is cast in the void portion of the joint to join the PC pillars / beams A and B, so that the pillar / beam joint is restrained and integrated by the broom effect of the baffle restraining material C. To do.

[0009]

According to the present invention, as described above, a PC beam having a vertically extending key-shaped portion including the joining rebar of the beam end and having the end portion is attached to the PC stigma so that the key-shaped portions contact each other. At the same time as assembling, fit the bamboo-like restraint material to each of the key-like parts,
By joining the PC pillars and beams, it is possible to save a great deal of time and labor required in the conventional method, and to shorten the time. Composed.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a PC column / beam joint structure according to the present invention.

FIG. 2 is a perspective view of an embodiment of a PC column / beam joint structure according to the present invention.

FIG. 3 is a partial vertical cross-sectional view of FIG.

FIG. 4 is a vertical cross-sectional view of a conventional PC column / beam joint structure.

[Explanation of symbols]

 A PC Column B PC Beam C Bamboo Restraint D Post-cast Concrete 1 Keyed Part 2 Beam Reinforcement 2a Beam End Joint 3 Rib

Claims (1)

[Claims] 1. A precast concrete beam is used as a stake for the precast concrete beams so that the key-shaped portions that are provided at the beam ends in a vertical direction orthogonal to the beam frame and that are joined and that include the joints of the beams are in contact with each other. The parts are placed so that they touch each other,
A precast concrete column-beam joint structure, characterized in that a bamboo-like restraint member is fitted over the key-like portion of each beam.