摘要
Zienkiewicz-Pande准则是Mohr-Coulomb准则的改进。文章基于Zienkiewicz-Pande屈服准则,考虑中间主应力作用的影响,通过结合平衡方程推导出了隧道/巷道围岩弹塑性应力、塑性区半径及位移的解析解。在此基础之上给出了具体算例,分析了中间主应力对Zienkiewicz-Pande准则解的影响,最终分别基于Zienkiewicz-Pande准则和Mohr-Coulomb准则对塑性区半径和围岩应力分布进行对比分析。研究结果表明,Zienkiewicz-Pande准则适用于隧道/巷道围岩的弹塑性分析,合理地选用Zienkiewicz-Pande准则对于工程实践具有较大的参考价值。
In this paper, based on the Zienkiewicz-Pande criterion, which is a modification of the Mohr- Coulomb criterion, and considering the effects of intermediate principal stress, analytic solutions for the elastic- plastic stress of the surrounding rock of a tunnel/roadway, as well as the radius and displacement of the plastic zone, are deduced using an equilibrium equation. The influence of the intermediate principal stress on the Zienkiewicz-Pande criterion solution is analyzed through a given example, and the plastic zone radius and the distribution of surrounding rock stress are analyzed based on the Zienkiewicz-Pande and Mohr-Coulomb criterions, respectively, showing that the Zienkiewicz-Pande criterion is applicable to the elasto-plastic analysis of the surrounding rock in a tunnel/roadway.
出处
《现代隧道技术》
EI
CSCD
北大核心
2015年第2期30-35,共6页
Modern Tunnelling Technology
基金
黑龙江省煤矿深部开采地压控制与瓦斯治理重点实验室开放基金资助项目(F2313-05)
国家自然科学基金(51474006)
