JPS6321785B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector such as a beam main reinforcement at a joint between a column and a beam.

Generally, at the joint between a column and a beam, the beam main reinforcements of, for example, a PC beam, which face each other with the column in between, are connected by anchor reinforcements and joint pipes. However, if the distances from the beam backs of adjacent PC beams, that is, from the floor line to the bottom surface of each PC beam, are different, there will be a level difference between the beam main reinforcements, so the anchor reinforcements must be bent in advance according to this level difference. It is necessary to do so. It is time-consuming to bend the anchor bars in this way, and since the above-mentioned level differences vary, it is costly to bend and process various anchor bars according to each level difference and produce products. It takes.

An object of the present invention is to provide a connecting device such as a beam main reinforcement that can be easily connected even when the reinforcing bars to be connected are not on the same straight line, and the features of the present invention are as follows:
The present invention includes a bendable connecting body formed into a rod shape from a plurality of steel wires, and joint members attached to both ends of the connecting body to connect reinforcing bars.

An embodiment of the present invention will be described below based on the drawings.

In FIG. 1, the coupling device of the present invention consists of a rod-shaped coupling body 1 with good bendability, and coupling pipes 2, 2a, which are coupling members attached to both ends of the rod-shaped coupling body 1. This connector is a bendable rod-like structure made by twisting multiple steel wires, and uses stranded PC steel wire or the like. When the connecting body 1 is used, for example, at a joint between a column and a beam, the length of the connecting body 1 is sufficient to connect the main reinforcements of the beam. Also, the joint pipes 2, 2a
The rear part of the hollow part is fixed to the tip of the connecting body 1 by crimping, etc., and the inner periphery of the hollow part of the joint pipe has a female thread 3.
is provided. One end of a threaded rod 4, 4a is screwed into the female thread of each joint 2, 2a so as to be removable and removable, and two nuts 5a, 5b are screwed onto this threaded rod.

Figure 2 shows a steel column 6 as an example of the use of a connector.
This shows the state of connection between the beam main reinforcements 8 and 8a at the joints between the PC beams 7 and 7a. That is, in this example, PC beams 7 and 7a face each other with steel column 6 in between, and the beam backs of both PC beams are such that PC beam 7 is higher than PC beam 7.
Higher than a. Beam main reinforcements 8 and 8a are arranged inside and below the PC beams 7 and 7a, respectively. Beam main reinforcement 8,
The rear end of the joint pipe 9, 9a is fixed to the end of the joint pipe 8a, and the tip side of the joint pipe is attached to the PC beam 7, 7a.
protrudes from the end face of Joint pipes 9 and 9a
The ends of threaded rods 4 and 4a connected to the joint pipes 2 and 2a of the connector are screwed into the connectors, and the beam main reinforcements 8 and 8a are connected by the connector 1.

In addition, the beam steel frame 10 arranged on the PC beams 7, 7a,
The ends of 10a each protrude from the end face of the PC beam,
It is connected to gusset plates 11, 11a protruding from the flanges 6a, 6a of the steel column 6 by bolts 12. Reference numeral 13 denotes a stirrup, and the upper end of the stirrup protrudes from the upper surface of the PC beams 7, 7a.

Next, a description will be given of the work of connecting beam main reinforcements using a connecting tool.

Attach the steel beams 10, 10a of the PC beams 7, 7a with bolts 12 to the gusset plates 11, 11a of the steel column 6.
After temporarily fixing the parts, start the connection work. First, one end of the threaded rods 4, 4a is screwed into the joint pipes 2, 2a, respectively, and the nuts 5a, 5b are brought into contact with each other. Next, set the connecting body 1 at the joint between the column and the beam, place one threaded rod 4 opposite the joint pipe 9 attached to the beam main reinforcement 8 of the PC beam 7, and tighten the nut 5.
a, 5b to screw the other end of the threaded rod 4 into the joint pipe 9, and when it has been screwed in a predetermined length, turn only one nut 5a so that it strongly contacts the end face of the joint pipe, and The other nut 5b is the joint pipe 2
The connecting work of one side of the connecting body 1 is completed by making strong contact with the end face of the connecting body 1. Also, to connect the coupling body 1 on the coupling pipe 2a side, bend the coupling body a little, make the threaded rod 4a of the coupling pipe face the coupling pipe 9a of the PC beam 7a, and use the same operation as above to connect the coupling body 1 via the threaded rod 4a. When the joint pipes 2a and 9a are connected, the beam main reinforcements 8 and 8a are connected by the connecting body 1, as shown in FIG.

As shown in Figure 2, even if the beam backs of the PC beams 7 and 7a are different and there is a level difference in the beam main reinforcements, or even if there is a level difference in the beam main reinforcements due to construction errors, the connected body 1
The beam itself can be bent to accommodate this level difference, and the main beam reinforcements can be connected smoothly.

Since the wire rod of the connecting body 1 is made of a material having greater rigidity than a normal reinforcing bar, it can be made smaller in diameter than this reinforcing bar.

Further, the reinforcing bars to be connected are not limited to beam main reinforcing bars, but may also be column main reinforcing bars, etc. In this case, the coupling tool is used at the joint between the columns.

As explained above, according to the present invention, even if the reinforcing bars to be connected are not located on the same straight line, the connecting body itself can be bent in response to the positional shift of the reinforcing bars, so that the reinforcing bars can be connected reliably. Moreover, it can be connected smoothly and efficiently, and there is no need to prepare multiple types of connectors depending on the level difference as in the past, and there is no need for bending, so it is advantageous in terms of cost, and it is also easy to manufacture. It's easy. When connecting,
Since the threaded rod is simply turned to move it in and out of the joint pipe, the connection operation on the joint pipe side does not have any effect on the connection body, so there is no possibility that the connection body may be twisted or the threaded rod may be rotated during connection. It is easy to work without being difficult.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partially cutaway front view, and FIG. 2 is a front view showing an example of how the connector is used. 1... Connecting body, 2, 2a... Joint pipe, 3...
...Female thread, 4,4a...Threaded rod, 5,5a...Nut, 6...Steel column, 7,7a...PC beam, 8,
8a...Beam main reinforcement.

Claims (1)

[Claims] 1. A connecting body 1 having bendability, which is arranged at a joint between a pillar 6 and a beam 7, etc. and formed into a rod shape from a plurality of steel wires, and a pipe attached to both ends of this connecting body. A joint pipe 2 having a female thread 3 on the inner periphery of the hollow part,
2a, and joint pipes 9, 9a which are screwed to each of the joint pipes at one end, are attached to reinforcing bars 8, 8a such as beams at the other end, and have female threads on the inner periphery of the hollow part of the pipe. Threaded rod 4 to be screwed together,
A connecting device such as a main beam reinforcement consisting of 4a and .