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用有限元强度折减法进行节理岩质边坡稳定性分析
引用本文:赵尚毅,郑颖人,邓卫东.用有限元强度折减法进行节理岩质边坡稳定性分析[J].岩石力学与工程学报,2003,22(2):254-260.
作者姓名:赵尚毅  郑颖人  邓卫东
作者单位:1. 后勤工程学院土木工程系,重庆,400041
2. 交通部重庆公路科学研究所,重庆,400067
基金项目:西部交通建设科技项目(合同号:2001-318-23)
摘    要:通过对节理岩质边坡非线性有限元模型进行强度折减,使边坡达不到稳定状态时,有限元静力计算将不收敛,此时的折减系数就是稳定安全系数。同时可得到边坡破坏时的滑动面以及破坏过程,有传统条分法无法获得节理岩质边坡的滑动面与稳定安全系数,该方法为节理岩质边坡稳定分析了开辟新的途径,通过算例表明了此法的可行性。

关 键 词:岩土力学  节理岩质  边坡  稳定性  有限元强度折减法
文章编号:1000-6915(2003)03-0254-07
收稿时间:2002-6-10
修稿时间:2002年6月10日

STABILITY ANALYSIS ON JOINTED ROCK SLOPE BY STRENGTH REDUCTION FEM
Zhao Shangyi,Zheng Yingren,Deng Weidong.STABILITY ANALYSIS ON JOINTED ROCK SLOPE BY STRENGTH REDUCTION FEM[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(2):254-260.
Authors:Zhao Shangyi  Zheng Yingren  Deng Weidong
Affiliation:Zhao Shangyi1,Zheng Yingren1,Deng Weidong2
Abstract:Stability analysis is made on the jointed rock slope by nonlinear FEM strength reduction method. With the c-j reduction,the nonlinear FEM model of jointed rock slope reaches instability and the numerical non-convergence occurs simultaneously. The safety factor is then obtained by c-j reduction algorithm. At the same time the critical failure surface and overall failure progress are found automatically. This presents a new approach for jointed rock slope stability analysis as the traditional limit equilibrium method can't get the safety factor and failure surface of jointed rock slope. Through a series of case studies,the applicability of the proposed method is clearly exhibited.
Keywords:rock and soil mechanics  stability analysis of jointed rock slope  strength reduction of FEM
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