基于FLAC的深基坑组合支护稳定性分析

Analysis on composite deep foundation support stability based on FLAC

对北京某深基坑工程进行了开挖和支护施工过程数值分析,分析研究了基坑围护结构的水平位移、竖向沉降变形等,从数值分析结果来看,基坑位移、不平衡力、塑性区均满足稳定性要求,而且实际监测其变形值也在规定范围内,说明数值分析采用的模型和边界条件合理。

The paper carries out numerical analysis on excavation and support process of the deep foundation engineering in Beijing,studies the horizontal displacement and vertical settlement deformation of the foundation enclosure structure.According to the numerical analysis results,the foundation displacement,unbalanced force and plasticity all meet stability demands,the actual monitoring deformation value is within the regulated domain,which shows that the model and border used in numerical analysis is rational.