Construction method for fast breaking pile head of cast-in-place pile

Abstract

A construction method for fast breaking a pile head of a cast-in-place pile includes the steps that the top end of each main steel bar of a steel bar cage is sleeved with a casing pipe, and an upper end port and a lower end port of each casing pipe are sealed; then pile foundation concrete grouting is performed till the designed elevation of the pile top is achieved; when grouting is performed atthe position of the elevation of the pile top, steel bar hoisting rings are pre-buried in pile head concrete above the elevation of the pile top; after the pile body concrete is solidified, earthworkaround the pile head is excavated; the portion needing pile cutting is measured and identified; after drilled holes are evenly distributed along the circumference of the identified position, the pilehead concrete is separated through a splitter; and the pile head concrete is hoisted out and carried away. The construction method effectively solves damage to the steel bars and a pile body in the construction process, improves the construction efficiency and guarantees the engineering quality.

Description

technical field [0001] The invention relates to the technical field of construction methods of cast-in-situ piles in house construction, in particular to a construction method for rapidly removing the heads of cast-in-situ piles. Background technique [0002] When pouring cast-in-situ piles, the concrete aggregates sink during the vibration process, and the cement slurry carries air bubbles back upwards, resulting in low concrete strength at the top of the pile. In order to ensure the concrete strength of the pile foundation, after the pouring of the pile foundation is completed, the part of the pile head higher than the design elevation of the pile top is removed to expose the steel bars, and then the steel bars are used to connect the steel bars of the upper cap structure to carry out the pouring of the superstructure. At present, the commonly used method of removing the pile head is: chiseling manually with small machines, or using a grinder to cut the pile head at the de...

AI Technical Summary

Problems solved by technology

This will cause bending damage to the steel bar when the pile head is removed, and it is easy to cause the steel bar to break from the bottom and need to be re-welded

This construction method has low work efficiency, it is difficult to ensure the construction quality of the steel bars after the pile head is broken, and it requires a lot of labor, which seriously affects the construction quality and progress

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