摘要
根据Cast3M有限元程序,提出了一种预测钢板桩墙支护下多层软土中多阶段深基坑稳定性的非线性有限元计算方法。给出了调整参数、水平位移、土压力和水力压力的挡土墙设计与施工的优化数值反算结果。将钢板桩墙的几何形状和刚度转换为等效抗弯刚度挡土墙和规则几何形状挡土墙，克服了二维不规则形状板桩墙建模的困难。通过对钢板桩墙水平位移曲线的对比分析，得出了令人满意的结果。
Abstract
The study presents a development of a nonlinear finite element calculation technique for the prediction of the stability of the multistaged deep excavation in submerged multilayered soft soil retained by steel sheet pile walls structures performed from Cast3M FE code. Optimization numerical backcalculation results are given for the design and construction of retaining walls with adjustment parameters, horizontal displacements, and earth and hydraulic pressure measurements. The difficulties of modeling 2D sheet pile walls in 2D with irregular shapes were overcome by transforming the geometry and stiffness of these sheet steel sheet pile walls into retaining walls of equivalent bending stiffness on the one hand and regular geometric shapes on the other hand. The results of this approach are satisfactory in view of the horizontal displacement curves obtained on the steel sheet pile walls compared by the measures.
NETL
NSTL
Wiley