| 基于Hoek-Brown屈服准则的隧道围岩稳定性分析 |
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| 引用本文： | 杨小礼,王金明,眭志荣.基于Hoek-Brown屈服准则的隧道围岩稳定性分析[J].铁道科学与工程学报,2008,5(5). |
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| 作者姓名： | 杨小礼 王金明 眭志荣 |
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| 作者单位： | 中南大学土木建筑学院,湖南长沙410075 |
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| 基金项目： | 交通部西部交通建设科技项目 |
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| 摘 要： | 基于隧道稳定性分析时常常采用Mohr-Coulomb屈服准则,但岩石屈服时服从Hoek-Brown半经验公式屈服准则.在Hoek-Brown屈服准则中引入强度折减法用以研究隧道围岩的整体稳定性,且与基于等效的Mohr-Coulomb屈服准则的强度折减法进行比较.分析结果表明:在不同屈服准则条件下的整体稳定系数、围岩变形特点及潜在破坏面位置大体上是一致的,但也存在一定差异;所得围岩稳定范围可以为锚固支护提供合理的参数以及开挖前的地层加固提供参考.
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| 关 键 词： | Hoek-Brown屈服准则 强度折减法 围岩稳定性 |
Stability analysis of tunnel surrounding rock based on Hoek-Brown yield criterion |
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| YANG Xiao-li,WANG Jin-ming,SUI Zhi-rong.Stability analysis of tunnel surrounding rock based on Hoek-Brown yield criterion[J].Journal of Railway Science and Engineering,2008,5(5). |
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| Authors: | YANG Xiao-li WANG Jin-ming SUI Zhi-rong |
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| Affiliation: | YANG Xiao-li,WANG Jin-ming,SUI Zhi-rong(School of Civil , Architectural Engineering,Central South University,Changsha 410075,China) |
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| Abstract: | Based on a semi-empirical rule for estimating shear strength of integral rock or joint rock masses,the Hoek-Brown yield criterion has been widely applied in analysis of the slope limit equilibrium,but rarely used in numerical simulation calculation of tunnel.In order to research the global stability of tunnel surrounding rock the strength reduction method was introduced into the Hoek-Brown yield criterion,and compared with the traditional strength reduction method which is based on the Mohr-Coulomb yield cr... |
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| Keywords: | Hoek-Brown yield criterion strength reduction method stability of surrounding rock masses |
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