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考虑轴向力和渗透力时软化围岩隧道解析

邹金锋 李帅帅 张勇 袁臻

邹金锋, 李帅帅, 张勇, 袁臻. 考虑轴向力和渗透力时软化围岩隧道解析[J]. 力学学报, 2014, 46(5): 747-755. doi: 10.6052/0459-1879-14-029
引用本文: 邹金锋, 李帅帅, 张勇, 袁臻. 考虑轴向力和渗透力时软化围岩隧道解析[J]. 力学学报, 2014, 46(5): 747-755. doi: 10.6052/0459-1879-14-029
Zou Jinfeng, Li Shuaishuai, Zhang Yong, Yuan Zhen. SOLUTION AND ANALYSIS OF CIRCULAR TUNNEL FOR THE STRAIN-SOFTENING ROCK MASSES CONSIDERING THE AXIAL IN SITU STRESS AND SEEPAGE FORCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(5): 747-755. doi: 10.6052/0459-1879-14-029
Citation: Zou Jinfeng, Li Shuaishuai, Zhang Yong, Yuan Zhen. SOLUTION AND ANALYSIS OF CIRCULAR TUNNEL FOR THE STRAIN-SOFTENING ROCK MASSES CONSIDERING THE AXIAL IN SITU STRESS AND SEEPAGE FORCE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(5): 747-755. doi: 10.6052/0459-1879-14-029

考虑轴向力和渗透力时软化围岩隧道解析

doi: 10.6052/0459-1879-14-029
基金项目: 国家自然科学基金资助项目(51208523).
详细信息
    作者简介:

    邹金锋,博士,副教授,主要研究方向:岩土与地下工程方面的教学与科研工作.E-mail:zoujinfengcsu@163.com;张勇,硕士研究生,主要研究方向:岩土与地下工程设计与研究.E-mail:zyong614@gmail.com

  • 中图分类号: TU921

SOLUTION AND ANALYSIS OF CIRCULAR TUNNEL FOR THE STRAIN-SOFTENING ROCK MASSES CONSIDERING THE AXIAL IN SITU STRESS AND SEEPAGE FORCE

Funds: The project was supported by the National Natural Science Foundation of China (51208523).
  • 摘要: 为了研究轴向应力和渗透力共同作用下软化围岩的应力与位移的变化及分布规律. 基于摩尔-库伦屈服准则及应力-应变软化模型并考虑轴向应力和渗透力的共同作用,将整个塑性区分为有限个同心圆环,以弹塑性交界面处的应力、应变为初始值,并采用微小径向应力增量逐步求出各个圆环上的应力应变及塑性区半径,据此重构了考虑渗透力和轴向力共同作用下软化围岩应力应变特性的逐步求解方法. 利用该方法,推导出软化围岩应力应变的解. 计算结果表明:在考虑轴向应力作用下,塑性区半径和隧道围岩位移都随着渗透力的增加而有所减小;当轴向应力为最小主应力时,渗透力的影响更为显著. 这说明渗透力的存在对于隧道围岩的应力应变分布以及塑性半径和围岩的位移有不可忽略的影响.

     

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出版历程
  • 收稿日期:  2014-01-22
  • 修回日期:  2014-04-11
  • 刊出日期:  2014-09-18

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