地铁区间隧道浅覆土下穿水库方案设计

发布时间：2018-05-12 22:28

本文选题：区间隧道 + 下穿　；参考：《铁道标准设计》2017年10期

【摘要】：随着城市轨道交通的大力发展,地铁区间穿越已有水库、河道等水利设施的现象越来越普遍。如何进行地铁区间在浅覆土的情况下下穿水利设施的方案设计,确保工程安全顺利实施是工程设计中的重难点。以某区间下穿水库工程为例,阐述地铁区间浅覆土下穿水库的设计思路及在该条件下穿越时的基底控制、管片抗浮、基岩孤石处理、结构防水等特殊问题的处理措施,并通过数值模拟的方法对设计方案进行分析验算。结果表明,区间上方设置桩板结构可以有效减小区间结构与上部结构施工时的相互影响。在控制沉降变形方面,上部结构先施工方案较优。
[Abstract]:With the rapid development of urban rail transit, the phenomenon of subway crossing existing reservoirs, river channels and other water conservancy facilities is becoming more and more common. How to carry out the project design of water conservancy facilities in the case of shallow overlying soil in subway section and ensure the safety and smooth implementation of the project are the most important and difficult points in the engineering design. Taking the project of penetrating reservoir under a certain section as an example, this paper expounds the design idea of the shallow overlying reservoir in the subway section and the measures to deal with the special problems such as the control of the basement, the anti-floating of the pipe piece, the treatment of the isolated rock in the bedrock, the waterproof of the structure and so on. The method of numerical simulation is used to analyze and check the design scheme. The results show that the pile-slab structure can effectively reduce the interaction between the interval structure and the superstructure during construction. In the aspect of controlling settlement deformation, the construction scheme of superstructure is better.
【作者单位】：中铁第一勘察设计院集团有限公司;
【分类号】：U231.1;U452.2

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