A Study On The Removal Scheme Of Common Supporting Pile For Subway Station And Integrated Underground Structure

With the integration of urban underground space development and intensive use of the gradual development.more and more subway stations have been began with the implementation of the integration of commercial buildings.Subway station and the surrounding underground space integration model is the subway station and the surrounding underground space combined,unified design,planning and construction in phases.In recent years,Beijing area rail transit and commercial facilities supporting the construction of more and more projects,and limited underground space resources so that the two mutual restraint.Only through the integration of design and construction can make the two get the best balance at the same time.Subway station and supporting the integration of the structure due to the use of space in the design of the concept of intensive.Will inevitably bring a lot of challenges to the corresponding construction plan,the need to consider the interaction between the structural construction and the corresponding control measures.This article is based on the project of Daoxianghu station of the second phase of Beijing Metro Line 16.The integrated structure is a two-storey double-column three-span frame structure,which is shared with the station structure.There are three connecting ports in the ground floor of the integrated structure and the subway station.In order to form a communication port,it is necessary to cut off the common retaining pile.According to the overall construction of the project,the original design of the excavation pile needs to be optimized.So the original design and different optimization of the integrated structure of the force and deformation of the state were calculated and analyzed,which is used to determine the final construction plan.The optimized construction scheme has been successfully applied in engineering,it is ensure that the subway station is put into operation before the completion of the integrated structure of the construction and sharing of the retaining pile It is also uset to provide experience.for the construction program of the integrated structure in the subway station and the surrounding underground space.in the future.