摘要
本文以杭州钱江新城地铁9号线五堡站—六堡站区间基坑工程为依托,利用FLAC 3D软件模拟基坑开挖支护过程,对基坑开挖过程中引起的围岩变形和地表沉降过程进行数值模拟。地铁五堡站—六堡站区间基坑采用明挖法施工,分两层开挖,其中负二层为主要监测位置,两帮采用地下连续墙支护,开挖过程中采用钢筋混凝土梁做支撑。其间利用数值模拟,结合现场监测值,分析基坑开挖过程的变形和支护效果。经验证,数值模拟技术在基坑开挖过程中具有一定的指导性,可以为工程施工提供一定的参考。
Based on the foundation pit project between Wubao Station and Liubao Station of Hangzhou Qianjiang New City Metro Line 9,the foundation pit excavation and support process was simulated by FLAC 3 D software in this paper,and the surrounding rock deformation and surface settlement process caused by the excavation of the foundation pit were numerically simulated.The foundation pits between Wubao Station and Liubao Station of the subway are constructed by the open-cut method and excavated in two layers,among them,the second floor is the main monitoring location,the two sides are supported by underground continuous walls,and reinforced concrete beams are used as support during the excavation process.In the meantime,numerical simulation was used to analyze the deformation and supporting effect of the foundation pit excavation process in combination with the field monitoring value.It has been verified that the numerical simulation technology has certain guidance in the process of foundation pit excavation and can provide a certain reference for engineering construction.
作者
倪建航
NI Jianhang(Hangzhou Chengdong New City Construction Investment Co.,Ltd.,Hangzhou Zhejiang 310000)
出处
《河南科技》
2021年第14期101-104,共4页
Henan Science and Technology
关键词
明挖法
地铁区间
基坑开挖支护
FLAC
3D
数值模拟
变形分析
open cut method
subway section
foundation pit excavation support
FLAC 3D
numerical simulation
deformation analysis
