Construction process for reverse circulation pore-forming super-long large-diameter in-water cast-in-place pile

Abstract

The invention discloses a reverse circulation pore-forming super-long large-diameter in-water cast-in-place pile construction technology. The technology comprises the following steps that after pile position surveying and lofting are conducted, a fender pile is embedded; lowering the steel casing through an accurate positioning device and detecting the perpendicularity; a drilling machine is in place; preparing slurry; drilling is conducted through a reverse circulation technology, the hole diameter and the perpendicularity of a hole are checked in real time in the drilling process, the hole is cleaned through the reverse circulation technology after drilling is completed, and mud is purified through a sediment separator; a reinforcement cage and a guide pipe are lowered after hole cleaning; underwater pouring is performed after the concrete is prepared; and detecting the pile foundation. By means of the accurate positioning device, the descending perpendicularity of the steel casing is improved, and convenience and construction quality of follow-up construction are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of building construction technology, and in particular relates to a construction technology of a reverse-circulation hole-forming super-long-diameter water cast-in-place pile. Background technique [0002] In the construction of super-long diameter cast-in-place piles, due to the deep depth of the pile foundation, the construction difficulty faced is also increased. The quality requirements of super long diameter water cast-in-place piles, therefore, need a reverse circulation pore-forming super long diameter water cast-in-place pile construction technology, which is suitable for super long diameter water cast-in-place piles, and effectively ensures the quality of pile foundation holes. SUMMARY OF THE INVENTION [0003] In view of this, the object of the present invention is to provide a reverse circulation hole-forming super long-diameter water cast-in-place pile construction technology, which is used to ...

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Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a reverse circulation hole-forming super long-diameter cast-in-place pile construction technology, which is used to solve the problem of insufficient verticality of the pile position and unsatisfactory hole-forming quality in the prior art, which is difficult to meet the requirements of super-large diameter. Quality Requirements for Large Diameter Cast-in-situ Piles in Water

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