Construction method of subway station steel pipe pile

A construction method, technology of steel pipe piles, applied in the direction of drilling equipment and methods, sheet pile walls, earthwork drilling and mining

Pending Publication Date: 2021-10-08
GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a construction method of steel pipe piles in subway stations, to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions

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  • Construction method of subway station steel pipe pile

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0034] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front" , "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Forward", "Reverse", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must ...

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Abstract

The invention discloses a construction method of a subway station steel pipe pile. The construction method comprises the following steps of S1, pilot tunnel hardening and leveling; S2, pile position fixing and hole opening; S3, steel pipe pile coring; S4, drilling, specifically, after coring is completed, a crawler-type drilling machine is adopted for drilling, in the drilling process, the flatness of a drilling machine and the perpendicularity of an active drill rod are checked, a drill bit and a drill rod connector are checked regularly, low-speed and low-pressure drilling needs to be conducted during drilling, and the perpendicularity is controlled by arranging a drop hammer on a drill arm; S5, primary hole cleaning; S6, hole depth measuring, and hole detecting; S7, steel pipe placing; S8, grouting pipe hoisting and placing; S9, sinking-checking thickness checking; S10, concrete pouring; S11, pile splicing and pouring, and installing longitudinal bars at the top of the pile; and S12, pile bottom post-grouting. The problems that the drilling perpendicularity does not meet the design specification requirement, the sediment thickness is difficult to control and the steel pipe pile concrete is not compact enough are solved.

Description

technical field [0001] The invention relates to the technical field of subway engineering, in particular to a construction method of steel pipe piles in subway stations. Background technique [0002] The following problems exist in the construction of steel pipe piles in subway stations: 1. The drilling rig is uneven, the gap between the drill pipe joints is too large, and the drilling pressure is too high, which may easily cause the verticality of the drilling to fail to meet the requirements of the design specifications; 2. The time required to remove the drill pipe and hoist the steel pipe 3. The steel pipe pile is a load-bearing component in the structure, and the quality of the concrete is related to the safety and stability of the entire structure. Due to the small section of the pilot tunnel and the limitation of the working space, it is difficult to guarantee the construction quality of the steel pipe pile concrete. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D15/04E02D5/28E21B7/04E21B7/20E21B21/14E21B47/00E21B25/00
CPCE02D5/38E02D15/04E02D5/285E21B7/04E21B7/20E21B21/14E21B47/00E21B25/00E02D2250/0023
Inventor 尹学鑫孟涛高晓刚王忠钊吴思武美容王振华崔凯贺贤群许光耀吕帅刘进辉龚杨
Owner GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD
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