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Construction method of underpass project

A construction method and engineering technology, which is applied in the direction of basic structure engineering, excavation, earthwork drilling and mining, etc., can solve the problems of columns hindering jacking construction, etc., and achieve the effect of ensuring possibility and ensuring safety

Active Publication Date: 2022-07-15
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology

[0003] The invention provides a construction method for the underpass project to solve the technical problem that the temporary column hinders the jacking construction during the construction of the underpass project in the prior art

Method used

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  • Construction method of underpass project
  • Construction method of underpass project
  • Construction method of underpass project

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Embodiment Construction

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The descriptions such as "first" and "second" in the present invention are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implying the number or order of the indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

[0029] refer to Figure 1 to Figure 11 , the embodiment of the present application provides a construction method for an underpass project, comprising the following steps: S1, constructing a plurality of retaining piles 2 around a preset position of the foundation pit 1, and constructing a longitudinal centerline...

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Abstract

The invention provides a construction method of an underpass project, which belongs to the technical field of building construction. In the present invention, the construction of the underpass project is carried out in sections. First, the first jacking frame on the second side of the foundation pit is pushed to a preset position below the existing line, and the first permanent frame is poured on the second side of the foundation pit. Construct multiple piers at the top of the first permanent frame, remove the temporary columns, and use the piers to replace the support of the temporary columns; construct a second jacking frame on the first side of the foundation pit and push it to the bottom of the existing line Preset positions, and then construct a second permanent frame on the first side of the foundation pit. The invention adopts the method of sub-section construction to construct the underpass project, avoids the influence of the temporary column on the construction, ensures the possibility of jacking with braces under adverse geological conditions, and ensures the safety of the adjacent foundation pit.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method of a lower penetration project. Background technique [0002] With the increase of local investment, there have been many projects such as newly-built highways passing through existing railway projects and new-type rail transit projects. The surrounding environment of such projects is relatively complex, and some underpass projects have large spans, so the construction method of jacking with piles is often used, but there are many temporary columns in the foundation pit, which hinders the jacking of the cast-in-place frame. SUMMARY OF THE INVENTION [0003] The present invention provides a construction method for an underpass project, so as to solve the technical problem in the prior art that a temporary column hinders the jacking construction during the construction of the underpass project. [0004] In order to achieve the above object, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E21D9/00
CPCE02D17/04E21D9/00
Inventor 张燕熊大生涂仁盼于廷新涂启柱薛峰储团结黄俊杰王忠华彭俊伟吴守富米军程龙虎谢凡沈峥陈蒙许泽鹏
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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