This paper mainly studies the simulation of underground structure foundation pit precipitation on the surrounding building settlement and its influence on the surrounding deformation. Based on the actual precipitation case of the foundation pit in the permeable layer of the diving area, this paper uses the Midas GTS finite element analysis software to establish a three-dimensional stress-seepage coupling model. The impact of foundation pit precipitation on the surrounding deformation, and the hazards of groundwater seepage to the foundation pit project are analyzed, the types and applicable conditions of foundation pit precipitation are summarized, the mechanism of the effect of foundation pit precipitation on the surrounding environment is theoretically analyzed, and the application is given. The calculation method of the ground precipitation caused by the precipitation, and for the problem that the formation parameters are too complicated, the mathematical model is used to predict the settlement of the surrounding buildings during the precipitation process. The research and analysis in this paper show that the settlement value of the soil outside the pit caused by precipitation accounts for about 35% of the total settlement value, the settlement value caused by excavation accounts for about 65%, and the error range between the simulated value and the monitoring value is -5.56% -11.12%.

Zhao Gu. Underground Structure Foundation Pit Precipitation in the Diving Area on the Surrounding Deformation. International Journal of Engineering Technology and Construction (2022), Vol. 3, Issue 4: 43-55. https://doi.org/10.38007/IJETC.2022.030404.

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