| 卸载岩体脆弹塑性模型在高边坡开挖分析中的应用 |
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| 引用本文： | 何江达,谢红强,范景伟,王启智. 卸载岩体脆弹塑性模型在高边坡开挖分析中的应用[J]. 岩石力学与工程学报, 2004, 23(7): 1082-1086 |
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| 作者姓名： | 何江达 谢红强 范景伟 王启智 |
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| 作者单位： | 1. 四川大学水电学院,成都,610065
2. 西南交通大学地下工程系,成都,610031 |
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| 摘 要： | 基于岩体开挖的卸载特性，引入岩体的加卸载判断准则，建立了卸载岩体的脆弹塑性本构模型，并应用于小湾水电工程坝肩槽开挖高边坡的稳定性分析，揭示了该边坡的开挖卸载效应，以及工程的整体稳定性。
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| 关 键 词： | 岩石力学 卸载岩体 高边坡 开挖 脆弹塑性模型 三维有限元 |
| 文章编号： | 1000-6915(2004)07-1082-05 |
| 收稿时间： | 2002-06-24 |
| 修稿时间： | 2002-08-07 |
BRITTLE ELASTOPLASTICITY MODEL OF ROCKMASSES DURING UNLOADING AND ITS APPLICATION TO HIGH SLOPE EXCAVATION |
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| He Jiangda,Xie Hongqiang,Fan Jingwei,Wang Qizhi. BRITTLE ELASTOPLASTICITY MODEL OF ROCKMASSES DURING UNLOADING AND ITS APPLICATION TO HIGH SLOPE EXCAVATION[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(7): 1082-1086 |
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| Authors: | He Jiangda Xie Hongqiang Fan Jingwei Wang Qizhi |
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| Affiliation: | He Jiangda1,Xie Hongqiang2,Fan Jingwei1,Wang Qizhi1 |
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| Abstract: | Based on unloading characteristics of rockmasses during excavation,this paper presents a criterion for loaded and unloaded mechanisms,and establishes a brittle elastoplasticity model of rocks. The model and criterion are then applied to a stability analysis of excavated high slope of the Xiaowan hydropower station project. The combination of the model and criterion with a three-dimensional nonlinear finite element method provides a technique for the selection and optimization of reinforcement measures. |
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| Keywords: | rock mechanics unloaded rockmass loading and unloading criterion brittle elastoplasticity model 3D FEM high slope excavation |
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