Study On The Influence Of Foundation Pit Excavation On Sensitive Building Around

With the continuous deepening of the urbanization process in our country,the operating space in the process of urban construction is constantly decreasing,and there are often high buildings,dense pipelines and even a large number of underground facilities around the construction project.Therefore,excavation of building foundation pits under such complex space conditions will inevitably affect neighboring buildings.In the process of excavation of foundation pits,not only the safety of the foundation pit itself but also the adverse effects of the foundation pit excavation on surrounding buildings and pipeline facilities need to be considered,otherwise it will cause a lot of economic losses.This paper takes the excavation of the main foundation pit of C hongqing International Business Center as the research object,and uses the large-scale general finite element software ANSYA to conduct numerical simulation analysis to study the safety of the excavation of the surrounding Jiangnan Avenue,sidewalk,DN400 PVC pipe and curved underground passage influences.Analyze from the aspects of stress,displacement,deflection,etc.to study whether it meets the requirements of the code.Based on the actual situation,this paper draws up the comparison working conditions,and establishes three models of normal excavation,excavation after stratum reinforcement,and excavation under full load of Jiangnan Avenue after stratum reinforcement.Study the improvement effect of ground reinforcement on the adverse effects of surrou.