Construction method of foundation pit

A construction method and technology for foundation pits, which are applied in basic structure engineering, excavation, sheet pile walls, etc., can solve the problems of small foundation pit construction space, long construction period, and high foundation pit enclosure cost, and achieve small construction site occupation, The effect of low construction cost and fast construction period

Active Publication Date: 2017-09-15
SHANGHAI MECHANIZED CONSTR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a foundation pit construction method to solve the problems of small foundation pit construction space, long construction period and high foundation pit enclosure cost in densely built areas in the city center

Method used

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Embodiment Construction

[0030] The purpose of this application is to solve the problem of foundation pit engineering construction in densely built areas in the city center. For the construction of the foundation pit project in the densely built area of ​​the city center, the steel pipe piles that are convenient for construction are used as the temporary enclosure structure to reduce the site occupied by the construction, and the steel pipe piles can be reused, and the construction period is fast; The lining wall is constructed along the inner side of the enclosure structure formed by steel pipe piles, and section steel is inserted into the lining wall to solve the overall stress problem of the foundation pit project.

[0031] The foundation pit construction method proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following descrip...

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Abstract

The invention provides a construction method of a foundation pit. The method comprises the steps as follows: a plurality of steel pipe piles with rabbets are punched underground, and a continuous enclosure structure is formed; cement soil reinforcement is performed in the rabbets of the adjacent steel pipe piles; and the foundation pit is excavated to the predetermined depth. According to the construction method of the foundation pit, the plurality of steel pipe piles with the rabbets are punched underground, the continuous enclosure structure is formed, and the foundation pit is excavated and supported, so that the effects that the place occupied by construction is small, the construction period is short and the construction cost is low are realized; besides, the steel pipe piles can be pulled out and recycled after construction of a lining wall and a bottom plate of the foundation pit is completed, and the construction cost is further reduced; further, profile steel inserted underground is used as part of the lining wall , so that the overall structural strength of the foundation pit is improved, and the anti-floating ability of the bottom plate of the foundation pit is improved.

Description

technical field [0001] The invention belongs to the technical field of foundation pit engineering construction, and mainly relates to a construction method of foundation pit engineering located in a densely built area in the center of a city, with heavy traffic and many underground pipelines. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. Before excavation, the excavation plan should be determined according to the geological and hydrological data, combined with the conditions of the nearby buildings, and the waterproof and drainage work should be done well. If the excavation is not deep, the side slope method can be adopted to stabilize the soil slope, and the slope size can be determined according to the relevant construction regulations. If the excavation is deep and there are nearby buildings, the foundation pit wall support method, shotcrete wall protecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/20E02D7/18
CPCE02D5/20E02D7/18E02D17/04
Inventor 吴欣之过浩侃王虓张顺李操周蓉峰刘颖赵培
Owner SHANGHAI MECHANIZED CONSTR GRP
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