砂井地基数值计算中的三维排水板单元及其验证

3D PVD element in numerical analysis of sand drain foundation

摘要: 根据砂井地基中的塑料排水板的力学、渗流特点,提出了三维排水板单元的有限元格式、矩阵表达式,并将其结合到三维Biot固结有限元程序当中。将排水板单元有限元法与常规有限元、Hansbo解进行了比较,结果表明排水板单元有限元法能较好地模拟塑料排水板在砂井地基中的应用。

Abstract: Abstrcat:According to the mechanism and seepage character of PVD in the sand drain foundation,a FEM formula of 3D PVD element was proposed,and it was edited in the 3D Biot program.The comparison was done between the PVD element FEM,general FEM and Hansbo solution.The results show that PVD element FEM can simulate the application of PVD in the sand drain foundation.