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Low-clearance MJS pile construction method

A construction method and low headroom technology, applied in sheet pile walls, foundation structure engineering, buildings, etc., can solve the problems of soil squeezing effect, surrounding environmental impact, limited net height of basement, difficult height of pile pressing equipment, etc.

Inactive Publication Date: 2021-07-23
GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the scope of application of this construction method is easily limited by the construction environment and the surrounding environment: due to the limited clear height of the existing basement, it is difficult for conventional pile-pressing equipment to enter the basement for construction. serious impact on the surrounding environment

Method used

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  • Low-clearance MJS pile construction method
  • Low-clearance MJS pile construction method
  • Low-clearance MJS pile construction method

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Embodiment Construction

[0043] In the following, the technical solutions in the present invention will be fully described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the present invention All other embodiments obtained by those skilled in the art without creative efforts, all belong to the protection scope of the present invention.

[0044] Figure 1-3 The schematic diagram of the MJS pile process is shown. In order to prevent the excessive loss of weekly friction resistance during the construction of the MJS pile around the pile foundation under the ground clearance ring, the surrounding of the bridge pile foundation is divided into 4 fan-shaped surfaces, and the construction sequence is diagonal. like Figure 4 As shown, adopting the form of sub-area and sub-period diagonal reinforcement is an effective means to control the deforma...

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PUM

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Abstract

The invention discloses a low-clearance MJS pile construction method, which is used in low-clearance tunnel bored pile construction. The method comprises the following steps of S(1) performing measuring and positioning; S(2) enabling a drilling machine to be in place, and drilling a lead hole; S(3) inserting a pipe and trying to spray; S(4) performing high-pressure rotary jet grouting; S(5) performing waste slurry treatment, wherein a slurry pool is planned to be arranged in a site before construction, slurry is pumped and drained into the slurry pool during construction, and the slurry is transported out after the slurry is solidified; S(6) washing a machine tool; and S(7) moving a rotary spraying machine tool to the next hole position. Compared with cast-in-situ bored pile construction in a normal environment, the cast-in-situ bored pile construction in the construction environment has the advantages that the construction site is small, the clearance is low, the construction efficiency can be effectively improved through reasonable site layout and construction machinery configuration, and the quality, safety, progress and cost can be effectively controlled.

Description

technical field [0001] The present application relates to a building construction method, in particular to a construction method of MJS piles under low headroom. Background technique [0002] With the continuous advancement of my country's urbanization process, the contradiction between urban traffic and the environment has become increasingly serious. Many cities have begun to set urban roads underground. , but due to the lag of planning, it is often necessary to build new underground tunnels under the existing underground buildings. Harmful impacts on buildings (structures). [0003] Static piles are a commonly used method in the reconstruction of existing building foundations. Static pressure pile is a pile foundation construction technology formed by the combination of anchor rod and static pressure pile. The piling construction is carried out in the piling holes reserved or excavated in the foundation, and the piles are connected with the foundation, so as to achieve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34E02D5/38E02D5/52E02D15/04
CPCE02D5/34E02D5/385E02D5/526E02D15/04E02D2250/0007E02D2250/0023
Inventor 杨双喜王景龙李俊杰柯其顺梁攀张岩林叶森吴浪李正王鹏祥牛瑜鑫
Owner GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD