多孔弹性海床上的管土相互作用数值模拟

NUMERICAL SIMULATION OF PIPE/SOIL INTERACTION LAID ON THE PORO-ELASTIC SEABED

采用有限元软件ABAQUS对管土系统进行分析,土体的本构模型采用多孔弹性模型。通过改变管道的水下重、环境载荷等参数进行计算,可以得到管道的位移、海床孔隙水压力分布、土体侧向隆起。计算结果表明,管道的水下重、环境载荷、土性参数均对管土系统有影响。

In this paper,the pipe/soil interaction is analyzed by using the common finite element software ABAQUS program,the constitutive model of soil is poro-elastic model.The computation is executed by changing the pipeline's subweights,environmental loads and so on.The pipe's displacement,the distribution of pore water and the soil lateral mounding are obtained.computation results have shown that the pipeline's subweights,environmental loads and soil parameters all affect the pipe/soil interaction to a certain extent.