| 强度折减法边坡失稳判据的分析 |
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| 引用本文： | 宁翠萍,杨益.强度折减法边坡失稳判据的分析[J].杨凌职业技术学院学报,2014(3):40-42. |
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| 作者姓名： | 宁翠萍 杨益 |
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| 作者单位： | 杨凌职业技术学院,陕西杨凌712100 |
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| 摘 要： | 目前,用强度折减法分析边坡失稳的判据分析都是从边坡破坏的机理出发。本文从边坡破坏机理和有限元自身特点两方面出发,借助ABAQUS有限元软件对两个经典边坡实例进行计算,分析了三种判据的差异性和统一性。最后得出在有限元分析边坡稳定中,塑性区贯通和特征部位的位移发生突变这两种判据具有统一性;有限元计算不收敛与以上两种判据具有差异性;塑性区贯通在边坡破坏机理和有限元计算中存在差异性。
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| 关 键 词： | 强度折减法 边坡稳定 失稳判据 |
The Analysis of Criterion for Instability of Slope Based on Strength Subtraction Methods |
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| NING Cui-ping,YANG Yi.The Analysis of Criterion for Instability of Slope Based on Strength Subtraction Methods[J].Journal of Yangling Vocational & Technical College,2014(3):40-42. |
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| Authors: | NING Cui-ping YANG Yi |
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| Institution: | (Yangling Vocational and Technical College, Yangling, Shaanxi 712100, China) |
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| Abstract: | At present,analysis criterion for slope instability with strength subtraction methods is based on the mechanism of slope failure.In this paper,from two sides of the mechanism of slope failure and characteristics of finite element,with two classical slope examples calculated by the finite element software ABAQUS,the paper analyzes the diversity and unity of three kinds of criterion.Finally,it is concluded that in finite element analysis of slope stability,the connectivity of plastic area of the slope and the continuous displacement mutation have unity;the convergence of numerical calculation and the above two criteria are different;there are differences between the mechanism of slope failure and the finite element calculation based on connectivity of plastic area of the slope. |
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| Keywords: | strength subtraction methods slope instability instability criterion |
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