JPS61250240A - Connection of pc pillar and beam - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention 1] The present invention relates to a method for joining precast reinforced concrete members such as columns and beams (hereinafter referred to as PC columns and PC beams).

Traditionally, the connection between a PC column and a PC beam is as shown in Figure 4.
A concave large structure 11 is formed in the PCCl2O head, into which the exposed anchor part 13 of the PCCl2O lower end main reinforcement assembled from the left and right is inserted, and the concave large structure 11 and the joint space 14 are inserted.
They were joined by pouring concrete.

However, with the conventional bonding method as described above, the PC
Since it is necessary to form a large concave structure 11 on the Cl2O head, there is a drawback that not only the production of PCCl2O is complicated but also the amount of cast-in-place concrete increases.

In addition, the exposed anchor portion 13 of the PCCl2O lower end main reinforcement must be bent downward and inserted into the concave structure 11, which has the disadvantage of making the erection work time-consuming.

The present invention was made to overcome the drawbacks of the conventional joining methods, and its purpose is to make construction simple and quick, and to reduce costs by reducing the amount of cast-in-place concrete. The purpose of this invention is to provide a method for joining PC columns and beams that allows for

[Structure of the Invention] The method of joining PC columns and beams of the present invention for the purpose of achieving A PC beam is erected in the girder direction perpendicular to the PC beam, and the left and right loop-shaped beam main reinforcements are overlapped, and the upper end main reinforcement is placed on the PC beam in the tension direction, and then it is placed in the joint space. It is characterized by pouring concrete.

Actual X Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. fp11 to 3, 1 is a PC column, the head of which is manufactured to a length that extends to the bottom end of the beam, and the leg portion of which is manufactured to a length that extends to the top of the beam.

2 is a PC beam in the column direction, which is manufactured by exposing the upper and lower main beam reinforcements 3 at the joint ends and connecting them in a loop shape.

4 is a PC beam in the tension direction, the upper part of which is cut out to the thickness of the slab, and a part of the stirrup reinforcement is exposed at the upper part, and the lower end main reinforcement 5 is exposed straight at the joint end. (See Figure 3).

Incidentally, a shearcotter may be formed on the joint end surfaces of the PC beams 2 and 4.

Each of the 20 members 1, 2.4 manufactured as described above is carried to the site and joined as follows.

First, the PCC 10 is erected, and the PC beams 4, 4 are erected from the longitudinal direction to the tension direction on the head of the PCC 10, and the main reinforcement 5 at the lower end thereof is jointed.

Next, a direction perpendicular to the PC beam 4 (horizontal direction)
As shown in Fig. 2, the left and right loop-shaped beam main reinforcements 3 are superimposed.

Subsequently, reinforcing bars 7 are arranged in the joint space G, and upper main reinforcements 8 are arranged above the PC beam 3.

When the assembly of the PCC 10PCC 204 is completed as described above, cast-in-place concrete 9 is finally placed in the joining space 6 to complete the joining.

[Effect of the invention 1 (1) Since there is no need to provide a concave structure on the PC pillar, the PC
Not only is the column easier to manufacture, but it also requires less cast-in-place concrete.

(2) There is no need to bend part of the anchor of the main reinforcement at the lower end of the PC beam downward, so erection is easy.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a joint made by the method of the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a -
4 is a cross-sectional view taken along the line (2) and is an explanatory diagram of the conventional joining method. 1...PC column, 2...PC result, 3...beam main reinforcement, 4
...PC beam, 5...bottom main reinforcement, 6...joint space,
7...Reinforcement bar, 8...Top main bar, 9...Cast-in-place concrete.

Claims (1)

[Claims] A PC beam in the span direction is built at the head of the PC column, its straight lower end main reinforcement is jointed, and a PC beam in the girder direction perpendicular to the PC beam is built to form loop-shaped beam main reinforcements on the left and right. A method for joining PC columns and beams, characterized in that the upper end main reinforcement is placed on the PC beam in the tension direction, and then cast-in-place concrete is placed in the joining space.