Analysis On Influence Of Foundation Pit Excavation On Neighboring Buildings Of Renmin South Road Station In Taiyuan City

With the rapid economic development,how to build a voluntary and environmentally friendly city with Chinese characteristics and a city with a high level of disaster prevention and reduction has become an imporatant issue for China’s urban construction.At present,the main way to solve this problem lies in how to fully develop and use our underground space.For urban foundation pit projects,most of them are located in densely-constructed sections,and the surrounding environment is very complex.The construction of foundation pits will inevitably cause some hidden dangers to the surrounding environment.Therefore,the impact of deep excavation on surroundings has become an important research question.This paper takes the deep excavation of Ren Min South Road Station of Metro Line 2 of Taiyuan City as an example to study the ground settlement,deformation of surrounding support structure and its influence on adjacent buildings during the excavation of deep foundation pits,and the design and construction of isolation piles.Parameters for sensitivity analysis,the main work and conclusions are as follows:1.This paper takes the deep excavation of Ren Min South Road Station as the engineering background,and analyzes the data from on-site monitoring to obtain the deformation law of the surrounding support structure,the surrounding surface settlement and the proximity of the foundation pit to the six-storey residential building of Xi Qiaoyuan Community.The research results can provide technical guidance and assistance for other subway lines in Taiyuan City.2.Based on the engineering environment of Ren Min South Road Station,this paper establishes a numerical model of MIDAS/GTS.Through mechanics analysis,it studies the surrounding retaining structures,ground settlement and the deformation law of buildings,and proposes relevant control standard values.3.In this chapter,take the Ren Min South Road Station project as a calculation model,use the MIDAS/GTS finite element analysis software to conduct numerical simulation,and use the orthogonal finite element test method to set the distance between the isolation pile and the building,the pile spacing,the pile length,and the pile diameter.Factors of different parameters,and building settlement,slope as an indicator of its analysis,evaluation of the sensitivity of the parameters.