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Cover-excavation type subway station middle stand column high-precision construction method

A construction method and technology for subway stations, which can be used in artificial islands, water conservancy projects, infrastructure projects, etc., and can solve problems such as inclinations that are difficult to find

Active Publication Date: 2022-03-11
CHINA RAILWAY GUANGZHOU ENG GRP CO LTD +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the construction process of the cover-excavation method, the inclination of the bored piles in the process of hole formation and steel column installation is not easy to find, this application provides a high-precision construction method for cover-excavation subway station columns

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  • Cover-excavation type subway station middle stand column high-precision construction method
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  • Cover-excavation type subway station middle stand column high-precision construction method

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Embodiment Construction

[0033] The following is attached Figure 1-4 The application is described in further detail.

[0034] The embodiment of the present application discloses a high-precision construction method for a central column of a cover-and-excavation subway station. refer to figure 1 and figure 2 A high-precision construction method for a central column of a cover-excavated subway station comprises the following steps:

[0035] S1. Surveying and setting out: Level and harden the construction site. According to the construction drawings and on-site wire control points, use the total station to measure the pile position, and directly fix the point or drive the wooden pile into the fixed point according to the geological conditions.

[0036] S2. Drilling pile holes: Before drilling pile holes, manually dig a test pit to the undisturbed soil or dig a 2m deep test pit to effectively protect the unidentified underground pipelines. A steel casing is buried at the opening of the designed pile...

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Abstract

The invention relates to the field of engineering construction, in particular to a high-precision construction method for a vertical column in a cover-excavation type subway station, which comprises the following steps: S1, surveying and setting out; s2, drilling a pile hole; s3, steel stand columns are poured and hoisted; in the drilling construction process and the steel stand column installation process, the limiting monitoring device is used for limiting the drilling barrel in the horizontal direction, the perpendicularity of the drilling barrel is monitored in real time, and therefore it is guaranteed that the perpendicularity of the cast-in-situ bored pile is stable in the hole forming process and the steel stand column installation process. The construction method has the effect of improving the construction precision of the subway station middle stand column.

Description

technical field [0001] The invention relates to the field of engineering construction, in particular to a high-precision construction method for a cover-and-excavation subway station central column. Background technique [0002] At present, with the vigorous development of rail transit construction, the demand for building subway stations in densely built areas is becoming more and more intense. The use of open and cut construction of subway stations in the center of the city will block ground traffic, while the cover and excavation method can minimize The construction covers an area without interrupting traffic, which greatly reduces the impact of subway construction on urban traffic operation and residents' lives. Therefore, it has been widely used in recent years. [0003] The cover-excavation method needs to set up a central column, which includes two parts: a steel column and a bored pile, and the steel column is also used as a station structural column. During the con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/045E02D5/38E02D13/06
CPCE02D29/045E02D29/04E02D5/38E02D13/06
Inventor 伍军赵亮郭阿龙曾德恩余伟
Owner CHINA RAILWAY GUANGZHOU ENG GRP CO LTD
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