摘要
基于杭州市某新建道路管道开挖施工工程,采用MIDAS有限元软件数值模拟研究了管道沟槽开挖对临近既有地铁隧道的影响。沟槽开挖采用土钉支护,轻型井点降水。计算结果分析显示:管道沟槽开挖会对临近地铁隧道位移产生一定的影响,但地铁隧道的位移变化较小,满足规范规定的变形要求。且竖向位移大于水平位移的变化。设计方案可行。并通过计算过程观察分析,对市政工程管道施工提出了建议。
Based on a pipe excavation construction project of a new road in Hangzhou, the article numerically simulates and studies the influence of pipe trench excavation on the adjacent existing metro tunnel by the finite element software MIDAS. The trench excavation is used of soil nail supporting and light well point drainage. The analysis of calculation result shows that the pipe trench excavation will have a certain influence on the displacement of adjacent metro tunnel, but the displacement change of metro tunnel is smaller, whichcan meet the deformation requirement of specifications. And the vertical displacement is larger than the change of horizontal displacement. The design scheme is feasible. According to the observation and analysis of calculation process, the proposal is put forward for the construction of municipal engineering pipelines.
出处
《城市道桥与防洪》
2018年第6期194-196,共3页
Urban Roads Bridges & Flood Control
关键词
沟槽开挖
地铁隧道
有限元计算
位移
trench excavation
metro tunnel
finite element calculation
displacement
