海堤固结排水填筑过程的数值模拟分析

在深厚软土地基上进行海堤固结排水填筑设计时,堤身的大变形沉降、施工期间及长期的稳定安全系数、排水板的深度及最佳的施工工期和工后沉降等因素都是应该考虑的问题。利用岩土工程有限元软件PLAXIS,对上述问题进行了数值模拟分析。计算结果表明,在深厚软土地基上的海堤填筑考虑大变形的计算更为合理;在堤身底部铺设一层土工织物对提高海堤施工过程中的稳定性和缩短工期有一定的作用;排水板的长度存在一个合理值,超过其合理长度,对提高施工过程中的稳定性、缩短工期以及改善工后沉降的意义不大。

Numerical Simulation of Filling Process of Sea Wall by Drainage Consolidation Method

On the design of filling of sea wall in the deep and thick soft soil foundation treated by drainage consolidation method,such problems as the large deformation of sea wall,the security coefficient of stability during construction and long time running,the depth of drain slab,the optimal construction period and the post construction settlement should be considered,which are simulated by FEM software PLAXIS. Results show that:it is reasonable to consider the large deformation of sea wall s filling; it is usab...