摘要
以某紧邻区间隧道深基坑为研究对象,建立三维有限元模型对基坑施工过程进行模拟,然后根据分析结果对基坑支护结构进行优化。结果表明,优化后的方案基坑开挖引起的区间隧道最大位移较原方案减小了36.3%,隧道结构最大裂缝满足规范要求,即优化后的方案能够更好地保护隧道结构的安全。研究结果可为今后紧邻隧道的基坑支护设计提供一定借鉴。
Taking a foundation pit adjacent to interval tunnel as research object, a three - dimensional finite element model was established to simulate the construction process of the foundation pit. Then, the supporting structure of the foundation pit was optimized according to the analysis results . The results show that the maximum displacement of the tunnel caused by the excavation is reduced by 36.3% compared to that in the original scheme, and the maximum crack of tunnel structure can meet the requirements of specification, i. e. , the optimized scheme can better protect the safety of the tunnel structure. The research results can provide some reference for the design of foundation pit support adjacent to tunnel.
作者
黄臣瑞
Huang Chenrui(School of Civil Engineering and Transportation State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641)
出处
《工程建设》
2017年第9期63-67,共5页
Engineering Construction
关键词
方案优化
基坑开挖
区间隧道
数值分析
scheme optimization
foundation pit excavation
interval tunnel
numerical analysis
