岩石边坡开挖及加固分析的弹粘塑性块体元方法  

ELASTO-VISCOPLASTIC BLOCK ELEMENT METHOD FOR EXCAVATION AND REINFORCEMENT ANALYSIS OF ROCK SLOPE

作　　者：陈胜宏[1] 汪卫明[1] 邹丽春[2] 

机构地区：[1]武汉大学水利水电学院,武汉430072 [2]国家电力公司昆明勘测设计研究院,昆明650051

出　　处：《岩石力学与工程学报》2002年第7期953-958,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(59979021);国家电力公司重点科技攻关项目子题(01-02-05(2))资助项目。

摘　　要：首先介绍可用于边坡开挖及加固分析的弹粘塑性块体元方法。该法把岩体视为具有弹粘塑性性质的结构面切割形成的刚性块体系统,考虑加固构件在结构面上变形的协调条件,建立求解块体系统和加固构件系统的变形和破坏过程。然后介绍该方法在小湾高拱坝坝肩和坝基开挖施工期稳定性研究中的应用情况。The elasto-viscoplastic block element method is illustrated for the excavation and reinforcement analysis of rock slope. The rock blocks delimited by the discontinuities are considered as rigid bodies. The discontinuities and the reinforcement components are of elasto-viscoplastic characteristics. The governing equation is formulated by the consideration of the force and moment equilibrium conditions of the rock blocks, the deformation compatibility conditions together with the elasto-viscoplastic constitutive relations of the discontinuities and the reinforcement components. A complicated arch dam abutment slope excavation and reinforcement engineering are studied,and the deformation and the stability of the abutment slope during the construction are obtained. Based on these results,the optimal reinforcement scheme is suggested.

关 键 词：岩石 边坡 开挖 加固 弹粘塑性 块体元方法 

分 类 号：TU457[建筑科学—岩土工程]