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Method for follow-up long steel casing construction of pile foundation construction in karst area

A technology of steel casing and pile foundation, which is applied in basic structure engineering, sheet pile wall, building and other directions, can solve the problems of low construction accuracy and affect the construction of pile foundation, etc., and achieve convenient and rapid construction, firm and stable hole wall , to ensure the effect of construction accuracy

Pending Publication Date: 2021-09-07
CCCC THIRD HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for following up the construction of long steel casings in pile foundation construction in karst areas, which solves the problem of relatively simple construction equipment due to the shallow depth of long steel casings at lower depths. , which leads to low construction accuracy, which affects the subsequent pile foundation construction

Method used

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Embodiment

[0027] The embodiment of the present invention provides a method for following up the construction of long steel casings in pile foundation construction in karst areas, including the following specific steps:

[0028] S1. First determine the position of the pile core point according to the pile foundation design plan, and fix the pile at the pile core position. After the pile core position is determined, build four guard piles around the pile core, and each Bind a positioning line, and make the intersection point of the two positioning lines coincide with the position of the pile center point;

[0029] S2. After the positions of the pile core and the guard pile are determined, use concrete to fix the pile foundation at the position of the pile core and the guard pile, and disassemble the two positioning lines;

[0030] S3. After the concrete at the position of the pile core and the guard pile is solidified, the drilling rig can be dispatched in place. According to the design p...

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Abstract

The invention provides a method for the follow-up long steel casing construction of the pile foundation construction in a karst area, and relates to the technical field of pile foundation construction. The method for the follow-up long steel casing construction of the pile foundation construction in the karst area comprises the following specific steps of (S1) firstly, determining the position of a pile center point according to a pile foundation design scheme, fixing a pile in the position of the pile center, building four fender piles around the pile center after the position of the pile center is determined, binding a positioning line between every two symmetrical fender piles, and enabling the intersection point of the two positioning lines to coincide with the position of the pile center point; and (S2) after the positions of the pile center and the fender piles are determined, performing pile foundation fixing in the positions of the pile center and the fender piles through concrete, and disassembling the two positioning lines. Rapid construction is performed by adopting a graded follow-up construction method, so that the construction precision of long steel casing construction can be guaranteed, additionally, the overall construction strength in a karst cave area can be guaranteed, the hole wall is firm and stable, the hole collapse situation is avoided, and the construction method is worthy of being widely popularized.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a method for following up the construction of long steel casings in pile foundation construction in karst areas. Background technique [0002] Pile foundation construction refers to the construction process of building foundations. The pile foundation is composed of piles and pile caps; the construction methods of pile foundations are divided into two categories: prefabricated piles and cast-in-situ piles; In addition, the type, section, length, site environment and design requirements of the pile should also be considered. The pile foundation is composed of piles and pile caps. Pile construction methods are divided into two categories: prefabricated piles and cast-in-situ piles. The selection of pile driving methods should not only be based on engineering geological conditions, but also consider pile types, sections, lengths, site conditions and design requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D13/04E02D5/68
CPCE02D5/38E02D13/04E02D5/385E02D5/68
Inventor 刘圣东常东明马铸刘昶王意李连秀李杰蔡坤坤
Owner CCCC THIRD HARBOR ENG