摘要
借助PLAXIS 2D有限元分析软件,基于Mohr-Coulomb模型,对某内支撑支护深基坑的开挖全过程进行数值模拟研究。计算不同支撑刚度下支护桩的内力以及变形,揭示了支撑刚度对支护桩位移、支撑轴力的影响规律,并分析了支撑轴力与支撑刚度比值对支护桩的影响规律,并得出近似比值,为内支撑支护基坑工程的设计、施工提供了一定理论依据。
Based on the Mohr-Coulomb model, the PLAXIS that is a 2D finite element analysis soft- ware was used to simulate the whole excavation process of a deep foundation pit with an internal support. The deformation and the internal stress of the retaining pile were calculated under different supporting stiffesses, indicating the influence of the stiffness of the retaining pile on the displacement and the axial forces. Moreover, the effect of the ratio of the axial force to the stiffness of the support on the supporting pile was analyzed, and the approximate ratio was obtained, providing a theoretical basis for the design and the construction of the foundation pit engineering with an internal support.
作者
王惠民
戢贞建
王勇
王建良
姚激
WANG Huimin JI Zhenjian WANG Yong WANG Jianliang YAO Ji(Faculty of Construction Engi. , Kunming Univ. of Science and Technology, Kunming 650500, China Kunming Junlong Geotechnical Engineering Co. , Ltd. , Kunming 650021, China Kunming Prospecting Design Institute of China Nonferrous Mestals Industry,Kunming 650051 ,China)
出处
《低温建筑技术》
2017年第4期78-81,共4页
Low Temperature Architecture Technology
基金
国家自然科学基金项目(11562009)
关键词
PLAXIS
2D
基坑支护
等效刚度
支撑轴力
水平位移
PLAXIS 2D
foundation pit support
equivalent stiffness
strut axial forces
horizontal displacement
