东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (12): 1765-1769.DOI: -

• 论著 • 上一篇    下一篇

大跨度公路隧道长期稳定性数值模拟

朱一飞;郝哲;高文华;   

  1. 东北大学资源与土木工程学院;辽宁有色勘察研究院;中铁三局集团有限公司;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    教育部新世纪优秀人才支持计划项目(NCET-10-0275);;

Numerical simulation on long-term stability of large-span road tunnel

Zhu, Yi-Fei (1); Hao, Zhe (2); Gao, Wen-Hua (3)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China; (2) Liaoning Nonferrous Geological Exploration and Research Institute, Shenyang 110013, China; (3) The Third Engineering Group Co., Ltd. of China Railway, Taiyuan 030001, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Zhu, Y.-F.
  • About author:-
  • Supported by:
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摘要： 采用FLAC软件,应用黏弹性理论,对韩家岭大跨度公路隧道开挖进行了蠕变效应模拟,并对其长期稳定性进行分析.计算结果表明,隧道开挖完成后围岩变形将经历较长一段时间的蠕变变形期后逐渐趋于稳定,拱顶蠕变效应最大,其次为拱脚→底板→墙腰,这与现场实测结果相一致,说明拱顶处不仅应作为大跨度公路隧道开挖过程分析时的重点,也应作为长期蠕变分析时的重点.所得计算结果和有关结论弥补了我国在大跨度隧道分析方面的空白,可为隧道设计及施工提供重要参考.

关键词: 大跨度, 公路隧道, FLAC, 蠕变, 数值模拟

Abstract: Based on the viscoelastic theory, the FLAC software was adopted to simulate the creep effect of Hanjialing large-span road tunnel to access the long-term stability. The results show that the creep process of the excavated rock mass will maintain a quite long period and then tend to steady. The creep effect at the crown is significant, and then in turn are the arc feet, bottom and sidewall. The simulation results are consistent with the field measurements well. The creep effect at the crown should be considered seriously not only in the excavation analysis, but also during the long-term creep. The numerical results and relevant conclusion may be helpful for the numerical analysis on large-span tunnel, which may also offer the important references for design and construction of tunnels.

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