Research On Impact And Safety Control Measures Of Beijing Newly Built Subway Station Crossing The Existing Subway Station

As the development and improvement of urban rail transport network, it is an inevitable problem that the newly built subway station crossing the existing subway station. In currently Beijing panling subway line, there are numerous new stations across existing subway station. In the process of the new subaw station construction, in addition to its own construction safety, how to make the influences to the existing structure into minimum is the key objectives. Therefore, In order to ensure the Security of existing subway structure and operation, accurately determine the influences which from newly built subway station to existing subway station’s structure and track and propose reasonable safety control measures which effect has been analyzed is particularly important.The paper based on the Beijing subway crossing project as a research object, analyzed the influences which from newly built subway station to existing subway station’s structure and track and proposed the safety control measures system. The main contents for researching are as follows:(1) Choosed the Beijing’s10th II line GongZhuFen station across the existing Beijing lth line GongZhuFen station project as a research object, established3D finite element analysis software ANSYS model and compared the measured data, analysised the existing structure and track geometry variation caused by the prossing project.(2) According to existing structure deformation and control system of Beijing subway crossing project, proposed the safety control measures system. At the same time, choosing the Beijing’s newly bluit7th line across the existing ShuangJing and CiQiKou station project as a research object, respectively established finite difference analysis software FLAC3D model and finite element analysis software ANSYS model to evaluate safety control measures, then contrast different security control measures, verified the feasibility of safety control measures system, provided a reference for the formulation of technical measures of BeingJing crossing project finally.