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Construction method of excavating hole piles in subway stations

A technology for subway stations and construction methods, which is applied to earth drilling, underground chambers, shaft equipment, etc. It can solve the problems of high cost, unfavorable building stability, unfavorable protection of water resources, etc., and achieves small construction interference and flexible construction methods , the effect of saving masonry

Active Publication Date: 2019-07-12
HONGRUN CONSTR GROUP STOCK
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  • Claims
  • Application Information

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Problems solved by technology

In the long-term excavation process, the glasses method will carry out large-scale and deep-seated precipitation, which is expensive, and is not conducive to the stability of surrounding buildings, and is also not conducive to the protection of water resources; fencing is allowed

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  • Construction method of excavating hole piles in subway stations
  • Construction method of excavating hole piles in subway stations
  • Construction method of excavating hole piles in subway stations

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Embodiment Construction

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0050]The construction method of underground excavation subway station hole piles of the present invention is facilitated by the special geographical environment where Xinghai Square subway station is located in Section 104 of Dalian Metro Phase I Project. Pebbles are mixed with silty clay and moderately weathered slate geology. The main structure is 9m Below the water level, it is not conducive to the "glasses method" construction. During the long-term excavat...

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Abstract

Provided is a mined metro station hole pile construction method. The method comprises the steps of whole support system construction and main body second lining construction; the whole support system construction step comprises the substeps that by utilizing air shafts at the two ends of the station as temporary working wells, four pilot tunnels are transversely dug through a positive step method; upper pilot tunnel side pile and middle column hole digging pile construction is conducted, bored piles are constructed inside an upper layer side pilot tunnel at intervals, and artificial hole digging piles are constructed inside an upper layer middle pilot tunnel at intervals; lower layer pilot tunnel bottom longitudinal beam construction is conducted; upper layer pilot tunnel steel pipe column construction is conducted; side pile crown beam construction is conducted; top longitudinal beam construction is conducted; top arch initial supporting structure construction is conducted; the main body second lining construction step comprises the substeps that soil body excavation is conducted, and station top plate second lining structure construction is conducted; when a soil body is dug to the bottom of a middle plate, middle plate and middle longitudinal beam construction is conducted; when a soil body is dug to the bottom of a base plate, the waterproof base plate is laid, and structure base plate construction is conducted; lower portion side wall construction is conducted when the base plate reaches the set intensity.

Description

technical field [0001] The invention relates to the construction technology of underground digging subway stations, in particular to a method for constructing hole piles in underground digging subway stations. Background technique [0002] In the construction of urban rail transit projects, since the underground excavation method is basically not affected by external pipelines, there is no traffic evacuation problem, and construction interference is relatively small, so it has become a more commonly used construction method for subway stations. According to the construction methods adopted by the underground excavation method of domestic subway stations at present, there are mainly glasses construction method and cover excavation method. In the long-term excavation process, the glasses method will carry out large-scale and deep-seated precipitation, which is expensive, and is not conducive to the stability of surrounding buildings, and is also not conducive to the protection...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/00E21D11/10E21D11/38
Inventor 陈磊赵余夫傅珺吴谷华鲍廉梵陈洁袁醒神
Owner HONGRUN CONSTR GROUP STOCK
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