The Deep Foundation Pit Engineering Support Numerical Simulation And Field Testing Research

In view of the rapid development of economy and urbanization level rise further, land resources has become an important influence factor on restricting city of fast development, the only way of urbanization sustainable development is reasonable exploitation and utilization the underground space of urban. Because of the different needs of the urban underground space development, the complexity of the underground soil layers and support type, make the diversity of foundation excavation becomes a problem of geotechnical engineering. The stress and deformation characteristics of foundation pit supporting structure, the influence on the neighboring building environment and other municipal installations, pushing its forward research and development in theory and engineering practice constantly in need.Foundation pit engineering has its unique personality in many of the underground engineering. It has been formed species more of the foundation pit supporting method, Foundation pit supporting method cannot general and in different places in order to formulate the construction organization design should according to local specific geological conditions because of its regional characteristic. Now due excavation engineering mostly in the buildings which is in densely populated cities of foundation pit supporting structure, requirements of foundation pit supporting structure towards variety and composite direction. In the deep excavation engineering construction process, soil mechanics balance with original soil excavation is constantly changing, the design must is considered excavation and supporting process various factors. Aiming at the Shenyang huafu tiandi foundation pit bracing engineering design project and actual construction, analyzing and comparing with other supporting schemes, Numerical model is established, and In the simulation and actual testing data were compared and analyzed, proofing that design the plan and the simulation results are reliable. Have a certain reference and important role for similar deep foundation pit bracing, and play a role to perfect deep foundation pit supporting theory also.