摘要
沈阳市南运河管廊采用盾构法施工,管廊区间下穿南北二干线隧道,南北二干线隧道为明挖矩形结构,下部为公路隧道,上部为综合管廊,对变形控制较为严格,工程风险较大。南北二干线隧道建设过程中已对南运河管廊进行规划,并已为管廊盾构区间下穿通过预留条件,采用有限元模拟的方法,计算了管廊盾构区间施工对南北二干线隧道的影响,对既有隧道的安全性进行了评价,同时提出了相应的注意事项。
The construction with shield method is adopted for the pipe gallery of the South Canal in Shenyang.The pipe gallery section passes through the north-south trunk tunnel.The north-south trunk tunnel is with an open cut rectangular structure,the lower part is a highway tunnel,and the upper part is a comprehensive pipe gallery.Its control on the deformation is relatively strict,with large engineering risk.The pipe gallery of the South Canal has been planned during the construction of the north-south trunk tunnel,and the condition has been reserved for undercrossing the shield section of pipe gallery.The finite element simulation method is used to calculate the influence of the shield section construction of pipe gallery on the north-south trunk tunnel.The safety of the existing tunnel is evaluated,and meanwhile the corresponding matters needing attention are put forward.
作者
赵伟
Zhao Wei(Liaoning Provincial Transportation Planning and Design Institute Co.,Ltd.,Shenyang 110166,China)
出处
《北方交通》
2021年第8期82-85,89,共5页
Northern Communications
关键词
盾构隧道
下穿
既有隧道
明挖隧道
有限元
Shield tunnel
Undercrossing
Existing tunnel
Open cut tunnel
Finite element
