An anchoring fork for preventing the reinforcement cage of concrete pouring pile from floating up

Abstract

An anchoring fork capable of preventing a cast-in-place concrete pile reinforcement cage from floating upwards is an umbrella-shaped deformable anchoring fork and is arranged on the bottom of the cast-in-place concrete pile reinforcement cage. The umbrella-shaped deformable anchoring fork comprises an inner supporting ring, an outer supporting ring, four or more fork rods which are symmetrically distributed, a guide rail and a tension spring. The inner supporting ring is connected with the fork rods through an inner supporting ring hinge and meanwhile connected with the guide rail through nuts. The anchoring fork fundamentally solves the reinforcement cage upward floating problem of the cast-in-place concrete pile reinforcement cage in the construction process.

Description

technical field [0001] The invention relates to an anchoring device in the field of concrete pouring. Background technique [0002] like figure 1 , Concrete cast-in-situ pile is a pile foundation widely used in civil engineering. It is composed of steel cage and cast-in-place concrete. Its construction process mainly has three steps: (a) drilling → (b) placing steel cage → (c) Pouring concrete → (d) into piles. [0003] In the process of pouring concrete, concrete 1 is poured into the bottom of the pile hole along the conduit 2 inserted into the bottom of the pile hole, and the pile hole is filled up from bottom to top. After the concrete 1 rushes down the conduit 2 to the rock and soil mass 5 at the bottom of the pile hole at a relatively high speed, the concrete 3 rebounds upward and collides and squeezes violently with the pre-placed reinforcement cage 4. The whole process is as follows: figure 2 shown. During this process, the concrete 3 that rebounds upward will dr...

AI Technical Summary

Problems solved by technology

[0004] In order to prevent the reinforcement cage from floating, the construction unit generally places heavy objects on the upper part of the reinforcement cage to balance the buoyancy force generated by the recoil of the concrete, but this method cannot accurately estimate the weight of the weight. When the weight is less than the buoyancy force, The steel cage still floats up, which cannot solve the problem; when the weight is greater than the buoyancy force, especially when the pile foundation exceeds a certain depth, under the joint action of the pressure of the top weight and the strong recoil force at the bottom, the longitudinal steel bars in the steel cage will collapse. Buckling occurs, which seriously affects the quality of the pile

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