大跨度浅埋连拱隧道施工与洞顶高压电塔相互影响分析  

Analysis of Interaction between Construction of Large-span Shallow Multi-arch Tunnel and High Voltage Tower on the Tunnel

作　　者：金建伟 

机构地区：[1]华杰工程咨询有限公司,北京市100029

出　　处：《公路》2014年第8期278-282,共5页Highway

摘　　要：广珠西线三期工程深湾隧道为三车道大跨度连拱隧道,进口浅埋段下穿高压电塔,施工风险较大,需进行特殊设计和施工。利用Midas/GTS有限元程序建立地层-隧道-电塔桩基的模型,对深湾隧道下穿电塔施工全过程进行三维数值模拟,分析了电塔与隧道相互之间的影响。结合现场监测数据与数值模拟结果,对加固和施工方案实施效果进行了评价,可为类似工程提供参考。Being the third-phase project of the G uangzhou-Zhuhai West Line, Shenwan Tunnel Project is a three-lane large-span multi-arch tunnel. The beginning segment of the shallow tunnel is built beneath the foundation of an electric tower. This project has high construction risk, and needs for special design and construction. In this paper, the strata -tunnel-piles of electric tower model is established by Midas/ GTS finite element program to simulate the whole construction process of Shenwan Tunnel beneath electrical towers in three-dimension, and analyze the effects of electrical towers and tunnels between each other. Based on the field monitoring data and the results of numerical simulation, the implementation effect of reinforcement and construction program is evaluated, which can be a reference for the similar projects.

关 键 词：大跨度隧道 浅埋隧道 高压电塔 数值分析 沉降值 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]