基于Midas/gts的基坑开挖方式对比

围护体系相同的情况下,不同的基坑开挖方式对基坑围护结构及土体变形量的影响有很大差异。以某海相软土深基坑工程为依托,通过三维有限元模拟分析,对比分层开挖与阶梯式开挖所引起的围护结构侧向位移、排桩弯矩、基坑水平位移等参数。结果表明,阶梯式开挖能够有效控制其空间效应并减小基坑支护结构与土体的位移。

Comparative Analysis of Excavation Methods based on Midas/GTS

If the retaining system is same,the influence of different excavation methods on the retaining structure and soil deformation is very different. The three-dimensional finite element simulation analysis of deep foundation pit engineering of Marine soft soil in Guangdong Chaoshan area is carried out. The lateral displacement,pile bending moment and horizontal displacement of foundation pit caused by layered excavation and stepped excavation are compared. The results show that the stepped excavation can effectively control the spatial effect and reduce the displacement of foundation pit support structure and soil mass.