JPS624090Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joining reinforcing bar for tightening, for example, PC walls.

Conventionally, to join PC walls, the ends of the joining reinforcing bars protrude from the wall end faces, and the opposing ends of the joining reinforcing bars are used as lap joints, which are anchored in concrete. However, with this configuration, in the event of an earthquake, for example, cracks occur in the concrete at the joint, the adhesion effect of the concrete deteriorates, and the function of the joint reinforcing bars deteriorates, resulting in a certain limit to the shear strength of the joint.

The purpose of this invention is to improve the shear strength of joints such as PC walls.

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

In Figures 1 and 2, PC walls 1 and 2 are erected at regular intervals. Ends of anchor bars 3 and 4 protrude from opposing end faces of both PC walls 1 and 2, and these ends form loop-shaped hooks 3a and 4a. Adjacent hooking portions 3a and 4a correspond to each other, are in opposing positions in the illustrated example, and are tightened by an annular connecting rod 5. In the illustrated example, this connecting bar is made by bending a single reinforcing bar into a substantially triangular shape, and as shown in FIG. There is. Both threaded portions 5a and 5b are connected by a joint metal fitting 6. Threaded parts 6a and 6b with different helical directions are carved on the inner peripheral part of this joint hardware 6, and one threaded part 5a of the connecting bar is attached to one threaded part 6a, and the threaded part 5a of the connecting bar is attached to the other threaded part 6b. The other threaded portion 5b of the connecting rod can be screwed into each of the connecting rods. Therefore, by turning the joint hardware 6, the connecting bar 5
The two ends of are approaching each other and moving away from each other.

As explained above, according to the present invention, since the hooking portions of the anchor bars are tied together by connecting bars, it is possible to improve the shear strength of joints such as PC walls compared to conventional examples. Also, the configuration is simple. Since the ends with opposing threaded parts can be adjusted using the joint hardware, the spacing between the anchor bars can be adjusted and the anchor bars can be reliably connected.

[Brief explanation of the drawing]

Fig. 1 is a front view showing how the joint reinforcing bar of the present invention is used, Fig. 2 is a sectional view taken along the line shown in Fig. 1, and Fig. 3 is a sectional view showing the relationship between the threaded portion of the connecting bar and the joint hardware. . 1, 2...PC wall, 3, 4...Anchor bar, 3
a, 4a...Latching portion, 5...Connection bar.

Claims (1)

[Claim for Utility Model Registration] Consisting of anchor bars each protruding from opposing end surfaces of two members such as a PC wall and having hooking portions facing each other, and an annular connecting strip that tightly connects the opposing hooking portions; A joint reinforcing bar characterized in that the bar is provided with threaded portions having a reverse thread relationship formed at both ends, and a joint metal fitting that connects both threaded portions in a separable manner.