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Construction method of underground assembly type station precast pile

A construction method and prefabricated pile technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve problems such as construction hole wall collapse, and achieve the effects of reducing hole collapse, increasing friction coefficient, and improving shaking.

Active Publication Date: 2021-06-18
CRPCEC SHENZHEN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem of construction hole wall collapse, this application provides a construction method of prefabricated piles for underground assembly stations

Method used

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  • Construction method of underground assembly type station precast pile
  • Construction method of underground assembly type station precast pile
  • Construction method of underground assembly type station precast pile

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Embodiment Construction

[0034] The following is attached Figure 1-3 The application is described in further detail.

[0035] refer to figure 1 and figure 2 , the embodiment of the present application discloses a construction method for prefabricated piles of an underground assembly type station, comprising the following steps:

[0036] S1: Prefabricated pile body 1 and guide bracket 3: pre-embed the main pipe 11 in the pile body 1, the end of the main pipe 11 is connected to the top of the pile body 1, and a number of branch pipes 12 are pre-embedded in the pile body 1, and the two ends of each branch pipe 12 Connected to the main pipe 11 and the side wall of the pile body 1 respectively, several branch pipes 12 are arranged in three layers from top to bottom, each layer of branch pipes 12 are distributed circumferentially around the main pipe 11, and the branch pipes 12 are arranged obliquely toward the bottom of the pile body 1;

[0037] S2: Drill construction holes 5 in the construction area;...

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Abstract

The invention relates to a construction method of an underground assembly type station precast pile. According to the construction method, a pile foundation is prefabricated in advance, a main pipe and a branch pipe communicating with the main pipe are buried in a pile body, the upper end of the main pipe communicates with the top of the pile body, the branch pipe communicates with the side wall of the pile body, a grouting pipeline is reserved in the pile body, after the construction hole is formed, the pile body is hung into the construction hole through a crane, then grouting is conducted on the reserved grouting pipeline, cement paste flows into the construction hole from the side wall of the pile body until the liquid level of the cement paste covers the top of the pile body, operation can be completed after the cement paste reaches certain strength, and therefore the friction coefficient of the pile body and the strength of the pile body are improved, and meanwhile, the quality problems of pile breakage, hole collapse, serious concrete over-squareness and the like in the construction process are avoided.

Description

technical field [0001] The present application relates to the technical field of engineering construction of prefabricated subway stations, in particular to a construction method of prefabricated piles for underground prefabricated stations. Background technique [0002] With the development of my country's urban rail transit construction, a large number of underground railways have been built, which has led to the continuous development and improvement of my country's subway engineering construction technology. The open-cut method is the preferred method for underground railway construction in various countries. The open-cut method is usually used in places where ground transportation and the environment permit. , and the construction technology of the prefabricated subway station project is widely used. [0003] In the construction technology of related prefabricated subway station projects, the construction methods of drilling construction holes such as column piles and up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/08E02D5/30E02D5/50E02D5/38E02D15/04
CPCE02D15/08E02D5/30E02D5/50E02D5/38E02D15/04E02D2250/0023
Inventor 张琦朱勇李家宏任涛魏士钦贺英杰王旭峰赵清亮
Owner CRPCEC SHENZHEN ENG