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

A construction technology and reverse circulation technology, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problem of difficulty in meeting the quality requirements of super long-diameter cast-in-place piles in water, insufficient verticality of pile positions, and unsatisfactory hole-forming quality, etc. problems, to achieve the effect of ensuring convenience and construction quality, improving drilling efficiency and reducing repeated crushing

Active Publication Date: 2022-08-05
中交三公局第一工程有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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

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Embodiment Construction

[0033] like Figure 1-5 As shown in the figure, the present invention provides a construction process for a reverse circulation pore-forming super-long diameter water cast-in-place pile, which includes the following steps: S1: measuring and setting out the pile position and then burying the guard pile; lowering the steel guard tube through a precise positioning device and detecting the verticality; The drilling rig (5) is in place; the mud is prepared by using bentonite, and the mud circulation device is used to form continuous circulating sedimentation and purification; and the mud performance indicators are monitored in real time;

[0034] S2: Move the drilling rig (5) so that the guiding mechanism (501) installed on the drilling rig (5) is axially coincident with the precise positioning device (1), and the drilling is carried out through the reverse circulation process. During the drilling process Check the hole diameter and the verticality of the hole in real time, check t...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E02D5/38E02D15/04E02D15/06E02D13/08E02D33/00
CPCE02D5/34E02D5/38E02D15/04E02D15/06E02D13/08E02D33/00Y02E10/10
Inventor 赵常青王年丰张志斌管永存靳欣周亚悝陈斌胡立新宋军
Owner 中交三公局第一工程有限公司
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