Construction method of supporting structure of shaft and foundation pit in tod mode

Abstract

The invention provides a supporting structure and a construction method for jointly building a shaft and a foundation pit in a TOD mode, including a foundation pit supporting structure, a shaft supporting structure, a front row of isolation piles, a rear row of reinforcing piles, and a coupling beam; The foundation pit is adjacent to the shaft, and a foundation pit support structure is arranged along the side wall of the foundation pit. The front row of isolation piles is located on the side wall of the foundation pit located on the front side of the shaft and adjacent to the shaft, and the front row of isolation piles are located in the foundation pit and the shaft. There is a shaft support structure in the shaft, a rear row of reinforcement piles are arranged on the rear side of the shaft, and a number of anchor cables are driven on the side of the shaft support structure close to the rear row of reinforcement piles; the front row of isolation piles and the rear row of reinforcement piles The piles are connected by coupling beams. The vertical shaft support structure of the invention is organically combined with the foundation pit support structure, and on the basis of joint construction, the respective support structures are perfect and independent, which is convenient for independent excavation and separate use, and does not affect each other. , The rear row of piles and the connecting beam form a double row of piles to strengthen the deformation control ability of the foundation pit and ensure the safety of the foundation pit.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and particularly relates to a supporting structure and a construction method in which a shaft and a foundation pit are jointly constructed and used separately in a TOD mode. Background technique [0002] With the development of social economy and urban construction, the subway network has gradually become denser and has gradually formed a TOD construction mode of station-city integration. The TOD model is transit-oriented development (TOD), which is a non-automotive planning and design method to maximize the use of public transportation when planning a residential area or a commercial area. Under the new construction mode, the distance between the subway station and the urban development building is shortened, and the traditional method is bound to cause mutual restriction and influence between the foundation pits. The shaft provides access conditions for the underground excavat...

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