| 土石坝抗震稳定性分析的极限平衡水平条分法 |
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| 引用本文： | 沈振中,崔娟,任华. 土石坝抗震稳定性分析的极限平衡水平条分法[J]. 南水北调与水利科技（中英文）, 2011, 9(3): 145-149,166. DOI: 10.3724/SP.J.1201.2011.03145 |
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| 作者姓名： | 沈振中 崔娟 任华 |
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| 作者单位： | 1. 河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098;河海大学水利水电学院,江苏南京210098;河海大学水利水电学院,江苏南京210098
2. 河海大学水利水电学院,江苏南京,210098 |
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| 基金项目： | 高坝深层抗滑稳定性评估技术，水利工程病变机理与健康诊断，江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 在土石坝的抗震稳定分析中常采用拟静力法。地震动态分布系数沿坝高呈非线性分布,因而采用竖向条分法将造成水平惯性力计算误差,在分析产生误差机理的基础上,尝试将极限平衡水平条分法应用于土石坝抗震稳定分析中。根据极限平衡法的基本原理,推导了满足力和力矩平衡的水平条分法计算公式。运用0.618多变量轮换优选法,实现了坝体边坡分层自动搜索最危险滑动面。算例分析表明,极限平衡水平条分法对于土石坝抗震稳定分析更为合理,其计算结果可以为土石坝的抗震稳定分析提供参考依据。
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| 关 键 词： | 土石坝 拟静力极限平衡法 竖向条分法 水平条分法 危险滑动面 |
Quasi-static Limit Equilibrium Horizontal Slice Method for Seismic Stability Analysis of Earth-Rock Dam |
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| SHEN Zhen-zhong,CUI Juan,REN Hua-chun. Quasi-static Limit Equilibrium Horizontal Slice Method for Seismic Stability Analysis of Earth-Rock Dam[J]. South-to-North Water Transfers and Water Science & Technology, 2011, 9(3): 145-149,166. DOI: 10.3724/SP.J.1201.2011.03145 |
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| Authors: | SHEN Zhen-zhong CUI Juan REN Hua-chun |
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| Affiliation: | SHEN Zhen-zhong1,2,CUI Juan2,REN Hua-chun2(1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,Jiangsu China,2.The College of Water Conservancy and HydropowerEngineering,Nanjing 210098 China) |
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| Abstract: | The quasi-static force method is often used in seismic stability analysis of earth-rock dam.Because of the nonlinear distribution of seismic dynamic distribution coefficient,the adoption of vertical slice method to calculate horizontal inertia force will cause errors.In this paper,based on the analysis of the error mechanism,the limit equilibrium horizontal slice method is applied to analyse the seismic stability of the dam.In accordance with the basic principle of limit equilibrium method,the formula of li... |
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| Keywords: | earth-rock dam quasi-static limit equilibrium method vertical slice method horizontal slice method seismic stability analysis critical surface |
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