Combinaion Of Supporting System In Rain Ransit Project Of Zhengzhou

With the development of the cause of urban rail transit, subway deep excavation in China’s major cities have been building pit deeper and deeper in the longitudinal supporting structure in the form of the various types of excavation is the hot and difficult. This article in order to the Zhengzhou Municipal Rail Transit Line1a tongbai Road subway station deep foundation pit supporting structure of the engineering background, combined with the subway construction characteristics of deep excavation of deep foundation pile to add the support composite retaining structure principle and supporting structure design checking, a comparative analysis of the various types of data during excavation monitoring measurement, the use of monitoring data feedback to guide the foundation pit excavation construction. Specifically:(1) a brief introduction to the various types of support in the form of deep foundation pit structure; discusses the the domestic deep excavation supporting structure Research.(2) Tongbai Road Station of Zhengzhou Urban Rail Transit Line1a deep foundation pit based, plus steel piles supporting composite retaining structure construction and application, and combined with the actual construction, described the combination of support form construction Notes.(3) the use Tongji University Venus frws4.0of software for the supporting structure of the internal forces, displacement and stability calculation, calculation results show that the pit during excavation such supporting structure is safe.(4) analysis of the various types of monitoring data collected in the excavation process, the use of data changes to guide the construction site, the entire excavation process has always been a safe and controlled state.