基于数值分析的深基坑围护结构优化设计

Optimum Design for Deep Foundation Pit Based on Numerical Value Analysis

深基坑工程涉及的影响因素多,而且各种影响因素之间的相互作用比较复杂。结合杭州某深基坑工程,采用基于数值分析的方法,分析了深基坑围护结构中地下连续墙的厚度对深基坑围护结构强度和变形的影响。在此基础上,提出了深基坑围护结构的优化方案。施工过程中的监测数据表明,深基坑围护结构的优化方案能够在满足工程安全可行的前提下降低工程成本。

Deep Foundation projects involve many factors,and their inter-relationships are rather complex.In this paper,a simulation in subway tunnel air shaft excavation project is used to analyze the effect to the characters of the foundation works,which is caused by the thickness of underground continuous wall.An optimum design is also adopted for the diameter and insert degree of the pile.The construction monitoring data shows that the project cost can be reduced dramatically,on condition that the single-factor impact analysis of the supporting structure could meet the project requirement of feasibility and safety,which can provide experience to similar projects.