Three-dimensional Numerical Simulation and Deformation Prediction of Foundation Pit Excavation
In the process of foundation pit excavation,the parameters of rock and soil mass will change with the change of the stress state in the soil mass,resulting in a certain deviation between the calculated deformation and the actual deformation.This study is based on the three-di-mensional numerical simulation of Midas Gts Nx to obtain the corresponding relationship between geotechnical parameters and displacement.According to the measured displacement of the supporting structure,the neural network technology is adopted to inverse the soil parameters,and then the inverse parameters are brought into the model for forward modeling to predict the deformation of the supporting structure under the next condition.The results of the calculation example show that the inversion of the geotechnical parameters from the measured displacement is carried into the model for forward modeling,and the simulation results are closer to the measured results,which can predict the deformation of supporting structure during foundation Pit Excavation.
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