摘要
以某商业基坑为研究对象,通过MIDAS/GTS软件建立三维有限元模型,分析了基坑开挖对既有地铁结构的影响。结果表明,地铁结构的最大水平位移和最大竖向位移都控制在规范允许的范围之内,基坑开挖对地铁结构的影响较小;同时,针对基坑开挖过程中可能存在的风险提出了相应的处理措施,对同类基坑的设计与施工有一定的指导意义。
MIDAST/GTS was used to develop a three dimensional model to study the effects of deep excavation on an existing metro structure.The results suggest that the proposed deep excavation design is capable of controlling the maximum displacements of existing metro structure in both horizontal and vertical directions within tolerable limit,i.e.,the excavation has minimal impact to the metro structure.The numerical model was also used to propose the approaches to reduce the possible risks in the process of deep excavation.
出处
《土工基础》
2015年第3期141-144,共4页
Soil Engineering and Foundation
关键词
基坑开挖
地铁车站
区间隧道
三维数值分析
Deep Excavation
Metro Station
Tunnels
Three-dimensional Numerical Analysis
