Construction method for cast-in-place concrete pile of soft soil foundation with stone layer

Abstract

The invention discloses a construction method for a cast-in-place concrete pile of a soft soil foundation with a stone layer. The construction method comprises the following steps: 1), determining the centre position of a cast-in-place reinforcement concrete pile; 2), using a vibration sunken tube method to sink the precast pile tip to the designed position, and enabling the bottom elevation of a steel sleeve to be parallel to that of the pile; 3), putting a reinforcement cage to the steel sleeve; 4), pouring concrete to the designed elevation of the pile top; and 5), waiting for 1-2 hours, pulling out the steel sleeve to form the cast-in-place reinforcement concrete pile. The construction method is simple and easy to operate, high in efficiency, convenient to control project quality, and safe and reliable, thereby the construction cost is greatly reduced, the working efficiency is improved, and manpower, material resources and financial resources are saved; moreover, the construction method is applicable to construction environments such as the soft soil foundation, regions abundant in underground water and the like.

Description

technical field [0001] The invention relates to a construction method of reinforced concrete cast-in-situ piles, in particular to a construction method of concrete pour-in-place piles on soft soil foundations with block stone layers. Background technique [0002] Generally, reinforced concrete cast-in-place piles are constructed by drilling methods. Hole collapse is very common in the process of forming reinforced concrete cast-in-place piles on soft soil foundations. When piles are formed, the amount of concrete increases and the filling coefficient increases. Steel casings or superstructures are required. Long steel casing; the steel casing is greatly deformed in areas with block rocks and cannot pass through the block rocks. In the coastal area, the silt layer is relatively deep and the block stone layer is deeply buried. Considering the construction technology and engineering cost, it is necessary to explore a new construction method for reinforced concrete cast-in-place...

AI Technical Summary

Problems solved by technology

[0002] Generally, reinforced concrete cast-in-place piles are constructed by drilling methods. Hole collapse is very common in the process of forming reinforced concrete cast-in-place piles on soft soil foundations. When piles are formed, the amount of concrete increases and the filling coefficient increases. Steel casings or superstructures are required. Long steel casing; the steel casing deforms too much in the area where there is a rock layer and cannot pass through the rock layer

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