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Subway station deep foundation pit support structure and construction method thereof

A technology for enclosure structures and subway stations, applied in infrastructure engineering, excavation, construction, etc., can solve problems affecting construction progress, cumbersome installation and dismantling, etc., and achieve the effects of preventing slurry loss, speeding up construction progress, and preventing hole collapse

Pending Publication Date: 2022-06-24
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects existing in the existing technology, a deep foundation pit enclosure structure of a subway station and its construction method are provided to solve the problem that the construction progress is affected by the multi-layer or multi-channel internal support in the existing foundation pit construction, and the installation and disassembly are cumbersome The problem

Method used

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  • Subway station deep foundation pit support structure and construction method thereof
  • Subway station deep foundation pit support structure and construction method thereof
  • Subway station deep foundation pit support structure and construction method thereof

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Embodiment Construction

[0030] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

[0031] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0032] refer to figure 1 and figure 2 As shown, the present invention provides a deep foundation pit enclosure structure of a subway station, comprising: a plurality of mixed cast-in-place piles 1 , a crown beam 2 , a concrete inner support 3 ,...

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Abstract

According to the subway station deep foundation pit enclosure structure and the construction method thereof, on the basis of traditional subway station open excavation method construction, the rigidity and the bearing capacity of enclosure piles are enhanced through the structures of steel outer pipes and concrete column cores, and then a foundation pit overall enclosure system is formed through connection of top beams at the pile tops and first concrete inner supports; any other steel supports or external pulling anchor cables are not arranged in the deep foundation pit any more, the influence of frequent mounting and dismounting of the supports is avoided, disturbance to the stability of the deep foundation pit is reduced, and the construction progress of the deep foundation pit is greatly accelerated due to the fact that no obstruction of multiple layers of inner supports exists. The problems that the construction progress is affected by multiple layers or multiple inner supports constructed in an existing foundation pit, and mounting and dismounting are tedious are solved.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a deep foundation pit enclosure structure of a subway station and a construction method thereof. Background technique [0002] At present, the commonly used enclosure structure of open-cut subway stations is generally a combined support system of bored piles (or underground diaphragm walls) + steel supports (or anchor cables). During the excavation process, it is necessary to carry out the installation of the inner support or the outer anchor cable while excavating the support; during the construction of the main structure, it is necessary to remove the inner support or outer anchor cable in layers and sections, and then construct the main body section by section. structure. The multi-layer or multi-channel internal support of the conventional scheme causes great cross-interference to the excavation support and the construction of the main structure, which not only...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/38E02D15/02E02D19/18
CPCE02D17/04E02D5/38E02D15/02E02D19/18
Inventor 杨昆鹏张学奇徐广刘军邱世民刘永久许志明
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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