利用PLAXIS中的UBC3D-PLM组成律模拟土壤液化

Simulation of Soil Liquefaction by Using UBC3D-PLM Model in PLAXIS

本研究主要针对PLAXIS中的UBC3D-PLM液化组成律模式作讨论。通过模拟不排水CDSS试验,对该组成律中的参数对模型的影响做初步的评估。测试过程中发现拟合参数时应该优先考量应力路径和抗液化曲线而不是应力应变曲线,并且需要同时拟合多组不同CSR条件下的试验而非单一拟合一种CSR下的试验结果。通过模拟和比对大量的离心机试验,对该组成律模拟液化行为的性能作出总结。希望能向使用该组成律模拟液化行为的学者提供参考。

The research aims to discuss the constitutive law of the liquefaction model UBC3D-PLM in PLAXIS.Through simulating the undrained CDSS test,the influence of a variety of parameters on the UBC3D-PLM model can be initially determined.During testing,the stress path and anti-liquefaction curves should be considered firstly rather than the stress-strain curves.Moreover,it's necessary to simultaneously fit multiple experimental groups under different CSR conditions rather than a single condition.The overall results of the performance of the liquefaction behavior can be obtained through simulating and comparing a large number of centrifuge tests.Finally,Hope to provide a reference for using the constitutive law of the UBC3D-PLM model.