土工基础

›› 2016, Vol. 30 ›› Issue (6): 651-657.

• 工程实录 • 上一篇    下一篇

基于三轴试验的ABAQUS修正剑桥模型参数分析

吕 阳   

  1. （铁道第三勘察设计院集团有限公司，天津 300251）
  • 收稿日期:2016-07-12 修回日期:2016-07-26 出版日期:2016-12-20 发布日期:2016-12-22
  • 作者简介:吕 阳(1991-)，男，助理工程师，研究方向为铁路路基设计及相关岩土工程问题处理等。

Modified Cam Clay Model Parameters in ABAQUS from Triaxial Tests

LV Yang   

  1. (The Third Railway Survey and Design Institute Group Co., Tianjin 300251)
  • Received:2016-07-12 Revised:2016-07-26 Online:2016-12-20 Published:2016-12-22

摘要： 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。

关键词: ABAQUS, 修正剑桥模型, 三轴试验, 参数分析

Abstract: Numerical analysis has more and more applications in the practical geotechnical engineering projects and the Modified Cam Clay Model is a popular constitutive model in these analyses. A twodimensional axisymmetric model was established in commercial finite element software ABAQUS with both soilwater coupling effective stress and automatic time spacing approaches. The model parameters in the ABAQUS were validated in the triaxial tests on normally consolidated and overconsolidated soil samples under consolidated drained and undrained conditions. The parametric studies can be performed in the ABAQUS by using the validated parameters.

Key words: ABAQUS, Modified Cam Clay Model, Triaxial Tests, Parametric Study