| 联拱隧道围岩稳定性与粘弹性分析 |
| |
| 引用本文： | 李之达,何巍,覃盛科,李挥,黄方,吴延贞.联拱隧道围岩稳定性与粘弹性分析[J].交通科技,2008(6). |
| |
| 作者姓名： | 李之达 何巍 覃盛科 李挥 黄方 吴延贞 |
| |
| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063
2. 襄樊市交通规划设计院,襄樊,441000 |
| |
| 基金项目： | 国家自然科学基金资助项目
，
湖北省交通科技项目
|
| |
| 摘 要： | 结合某联拱隧道现场监测,利用隧道专用软件同济曙光,对联拱隧道施工进行了数值模拟.结果表明:台阶环向土开挖较台阶开挖安全;主洞上下台阶不同步开挖施工是较为合理的施工方案,且模拟和现场测试结果表明按此施工所产生的偏压在允许范围内;而洞周位移数值模拟结果较监测结果偏大,但在允许范围内;洞周位移黏弹性分析表明,隧道在开挖46 d后,其围岩已经稳定,可以进行二次衬砌.
|
| 关 键 词： | 联拱隧道 数值模拟 稳定性 黏弹性 |
Stability and Visco-elastic Analysis of the Surrounding Rock of Bi-arch Tunnel |
| |
| Li Zhida,He Wei,Qin Shengke,Li Hui,Huang Fang,Wu Yanzhen.Stability and Visco-elastic Analysis of the Surrounding Rock of Bi-arch Tunnel[J].Transportation Science & Technology,2008(6). |
| |
| Authors: | Li Zhida He Wei Qin Shengke Li Hui Huang Fang Wu Yanzhen |
| |
| Institution: | Li Zhida1,He Wei1,Qin Shengke2,Li Hui2,Huang Fang1,Wu Yanzhen1(1.School of Transportation,Wuhan University of Technology,Wuhan 430063,China,2.Xiangfan Communication Plan Design , Research Institute,Xiangfan 441000,China) |
| |
| Abstract: | In this paper,the dynamical FEM(GeoFBA-V3.0) software was applied to simulate the construction of the bi-arch tunnel combining the monitoring.The results showed that the surrounding excavation is safer than stairs excavation and excavation out of sync between top and bottom stairs is more reasonable than synchronization excavation.Moreover,the simulation and the monitoring showed that the deviation of pressure caused by construction is within allowing range.The simulating surrounding displacement is slightl... |
| |
| Keywords: | bi-arch tunnel numerical simulation stability viscoelasticity |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
