Study on the Deformation Law of the Deep Foundation Pit of Soft Soil Layer Under Different Working Conditions
Based on the construction practice of an underground project,the paper uses numerical simulation method to analyze the surface set-tlement around the foundation pit and the deformation characteristics of the supporting structure under different excavation conditions.The re-sults show that the measured values are consistent with the simulated values,and the numerical error is less than 10%,that is,the established model is accurate and reliable.With the increase of excavation depth,the surrounding surface settlement increases gradually,and the slope of the curve between the surface settlement and the distance from the foundation pit also increases gradually.The horizontal displacement of the supporting structure increases first and then decreases with the increase of the depth of the supporting pile.With the increase of excavation depth,the horizontal displacement of supporting piles increases continuously,and the position of maximum horizontal displacement begins to move downward.
Soft soil areaDeep foundation pitNumerical simulationReal-time monitoringDeformation characteristic
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