Method for preventing hole wall from collapsing in reinforced concrete cast-in-place pile

Abstract

The invention relates to a method for preventing a hole wall from collapsing in a reinforced concrete cast-in-place pile, which comprises the following steps of: drilling by a drilling machine, protecting a wall of a pile hole, manufacturing a reinforcement cage, binding a reinforcement mesh, hoisting the reinforcement cage and pouring concrete. When the reinforcement cage is manufactured, the reinforcing ribs are made into a circular ring shape, then the main ribs are evenly arranged on the outer sides of the reinforcing ribs in the direction perpendicular to the reinforcing ribs and welded, the stirrups are welded to the outer sides of the main ribs, the stirrups are spirally arranged in the length direction of the main ribs in a surrounding mode, and the main ribs, the reinforcing ribs and the stirrups form the reinforcement cage. A layer of reinforcing mesh is bound outside the reinforcement cage, the reinforcing mesh is made of 2mm steel wires, and intersection points of the reinforcing mesh, the main reinforcements and the stirrups are firmly bound by galvanized binding wires. Through the reasonable structural design, materials can be saved, the steel reinforcement cage and the steel reinforcement mesh support the cast-in-place pile hole, hole wall collapse and falling can be prevented, pile bottom sediment can be prevented from being generated, the quality of a pile foundation is prevented from being affected, and therefore the bearing capacity of the pile foundation is improved.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction in geotechnical engineering, in particular to a method for preventing the collapse of a hole wall in a reinforced concrete cast-in-place pile. Background technique [0002] Reinforced concrete cast-in-place piles are the most common method in the construction of pile foundations in my country. First, the cast-in-place pile holes are drilled on the construction site. When the required depth is reached, the prefabricated steel cages are placed and concrete is poured. The advantage of this method is the difficulty of construction. Low, but because the reinforced concrete bored piles are formed underground and in water to form holes and pour cement concrete, plus different hole forming methods, various changes in geological conditions, the length of cement concrete pouring time, the level and experience of construction technicians Due to factors such as the level of reinforced concr...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, the present invention provides a method for preventing hole wall collapse in reinforced concrete cast-in-place piles, which solves the problem of hole wall collapse and falling off during the construction of concrete pouring piles, resulting in pile bottom sediment and affecting the quality of pile foundations. Improve the quality of pile foundation construction, especially to ensure the pile foundation bearing capacity of end-bearing piles

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