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针对各类土工问题,数值仿真模拟已经成为一种重要的研究方法,其中修正剑桥模型在分析过程中得到了广泛应用。基于有限元软件ABAQUS,建立了轴对称二维模型,采用水土耦合的有效应力分析方法及自动选择时间步长的算法对正常固结土与超固结土的三轴排水与不排水试验进行了数值模拟,并验证了模型的正确性。利用已验证模型,对ABAQUS修正剑桥模型进行了详细的参数分析,为数值模拟中的参数处理工作及反分析参数的选择提供了有价值的参考。
For all kinds of geotechnical problems, numerical simulation has become an important research method, in which the modified Cambridge model has been widely used in the analysis process. Based on the finite element software ABAQUS, an axisymmetric two-dimensional model was established. Three-axis drainage and undrained tests of normal consolidated soil and overconsolidated soil were carried out by using soil-structure coupled effective stress analysis method and automatic selection of time-step algorithm Numerical simulation, and verify the correctness of the model. Using the validated model, the ABAQUS modified Cambridge model is analyzed in detail, which provides a valuable reference for the parameter processing and the choice of the inverse analysis parameters in the numerical simulation.