Diaphragm wall reinforcing cage dovetail type sealing head structure

Abstract

The invention provides a diaphragm wall reinforcing cage dovetail type sealing head structure. The structure is arranged on a dovetail of a reinforcing cage; steel plates C are symmetrically arranged at the dovetail position of a reinforcing cage B; the width of each steel plate C is more than or equal to the length of between a dovetail convex point F of the reinforcing cage B and a tangent point E of a joint pipe and a horizontal rib; one end point N of each steel plate C is in level with the dovetail convex point F of the reinforcing cage B; the length of each steel plate C is equal to thedistance between the horizontal rib D in the first channel of the reinforcing cage B and the horizontal rib D in the last channel; the vertical distance between a dovetail concave point G of the reinforcing cage B and the other end point M of each steel plate C is more than 15 cm; and the steel plates are horizontally connected with each other in different straight lines. The structure has the advantages that: the steel plates are arranged at the dovetail position, so that foundation is laid for development of diaphragm wall construction to deep direction, design basis is provided for the diaphragm wall reinforcing cage, concrete can completely flow between the dovetail of the reinforcing cage and the joint pipe, flatness of a slot wall is maintained, and scrubbing of the slot wall surface is facilitated.

Description

technical field [0001] The invention relates to a device for ensuring the smooth lowering of the ground wall reinforcement cage and the joint pipe and the smooth lifting of the joint pipe, in particular to a dovetail head structure of the ground connection wall reinforcement cage. Background technique [0002] According to past construction experience, the reinforcement cages or joint pipes of the ground connection wall may not reach the bottom during the lowering process, and the joint pipes may not be pulled out after pouring concrete, especially if the local connection wall is more than 40m deep or thicker than When it is 1.2m, it is difficult for the joint pipe to be lowered to the bottom of the groove section, and the pulling force of the joint pipe will increase rapidly at the same time. If the joint pipe cannot be lowered down to the bottom of the groove section, the situation that the concrete will wrap the joint pipe from the bottom of the lower flow around the join...

AI Technical Summary

Problems solved by technology

If the depth and thickness are exceeded, it is likely that the friction between the steel cage and the joint pipe is too large or the joint pipe is stuck on the horizontal bar of the steel cage, resulting in the problem that the joint pipe or the steel cage cannot be lowered to the bottom of the groove.

In addition, when the contact area between the joint pipe and the concrete is large, a large pull-up force is required, which not only increases the risk of pulling up the joint pipe, but also increases the technical requirements for the guide wall and mechanical equipment

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