【摘 要】
：
以延安东路隧道浦东出口与东西通道接口处的隧道改扩建基坑工程为背景,针对无围护结构的敞开段运营隧道改扩建中的抗浮稳定性不足、新建匝道围护结构无法封闭等困难,经进行数
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以延安东路隧道浦东出口与东西通道接口处的隧道改扩建基坑工程为背景,针对无围护结构的敞开段运营隧道改扩建中的抗浮稳定性不足、新建匝道围护结构无法封闭等困难,经进行数值模拟分析后提出了采取动态降水控制隧道变形的保护措施。其中,新建匝道施工造成紧贴运营隧道的变形规律及其保护措施,可供类似工程借鉴。
Taking the extension and extension of foundation pit project at the Pudong exit and east-west tunnel interface of Yan’an East Road as the background, the anti-floating stability of the tunnel in the open section of the open section without building envelope is not enough, and the envelope of the new ramp can not be closed Difficulties, after the numerical simulation analysis put forward to take dynamic precipitation control tunnel deformation protection measures. Among them, the construction of new ramp causes close to the operation of the tunnel deformation law and its protective measures, for similar projects for reference.
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