【摘要】 根据真空-堆载联合预压软基中塑料排水板的作用特点,提出了PVD单元的概念以及有限元格式、矩阵表达式,并将其结合到三维Biot固结有限元程序中.对真空-堆载联合预压计算例题,用PVD单元有限元法、常规有限元法进行了计算、比较,结果表明PVD单元有限元法能较好地模拟塑料排水板在真空-堆载联合预压地基中的应用.更多还原

【Abstract】 Based on the characteristics of prefabricated vertical drains(PVD) in soft ground,the FE form and matrix expression of PVD were proposed and introduced to the 3-D Biot program.A case study of numerical calculation of a soft ground improved by vacuum-surcharge preloading with PVD element-FEM and conventional FEM shows that the present method is good in simulation of PVD applied to soft ground improved by vacuum-surcharge preloading.更多还原