【摘要】 采用ABAQUS软件处理管土相互作用中的接触面问题.利用ABAQUS软件中的主控-从属接触算法,使管道和海床形成一个接触对;并且建立了管土系统有限单元模型.海床土体分别采用非线性弹性模型、多孔弹性模型、Ramberg-Osgood塑性模型对管土系统进行计算.通过分析计算,得到了管道沉降量与管重间的关系,以及由于管道沉陷而形成的土体楔形,土体楔形的存在,增加了管道的稳定性.计算结果和有关试验结果相符合,说明采用该软件进行管土相互作用问题分析是可行的.更多还原

【Abstract】 In this paper, the interface of the pipe/soil interaction is analyzed by ABAQUS software. The pipe-soil contact pair is formed by the master-slave method of the ABAQUS software, and the finite element model is established. The constitutive models of soil, including nonlinear elastic, porous elastic and Ramberg-Osgood models are adopted. The relationship between the pipe’s weight and sinking is obtained, and the soil lateral mounding is also obtained in the computation, which can improve the pipe’s stability. The computation results show that they agree with some test results and the pipe/soil interaction analysis can be made by ABAQUS software.更多还原