摘要
为了深入了解临近开挖施工的基坑与附近既有重力式挡土墙之间相互作用所引起的力学行为,利用快速拉格朗日方法(FLAC3D)建立既有重力式挡土墙与临近基坑开挖的实际模型和等效模型,并通过这2个模型的对比数值模拟,分析了既有重力式挡土墙与临近基坑开挖的相互影响.将重力式挡土墙及其背后土体等效为相应荷载进行模拟,其土体变形和支护结构受力与实际模型模拟的结果较为相似.按照等效模型进行基坑支护结构设计是可行的,但同时也要注意分析重力式挡土墙的稳定性.
In order to understand the mechanical behavior between existing gravity retaining wall and nearby foundation pit excavation,fast Lagrangian Analysis of Continua in 3 Dimensions（FLAC3D） was employed to build a realistic model and an equivalent model,then to investigate the interaction between existing gravity retaining wall and nearby foundation pit excavation by numerical modelling.The deformation of soil mass and mechanic of supporting structure in the equivalent model,in which the gravity retaining wall and the soil mass after it was changed into some equivalent load acting on soil,was similar to which in the realistic model.It＇s feasible to design the support structure in the foundation pit,but it has to analyse the stability of gravity retaining wall at the same time.
出处
《湖南科技大学学报（自然科学版）》
CAS
北大核心
2011年第3期45-50,共6页
Journal of Hunan University of Science And Technology：Natural Science Edition
基金
湖南省自然科学基金(11JJ6042)
