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《Yellow River》 2014-12
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Applicability Research on Instability Criterions for Inhomogeneous Layered Slope Using Strength Reduction Method

HE Jun;SHI Jun-tao;HUANG Lu;KONG Si-li;School of Civil Engineering and Architecture,Southwest Petroleum University;Tianmen Building Industry Bureau;School of Civil Engineering,Guizhou University;  
Through focusing on analyzing systematically and deeply on Drucker-Prager yield criterion,the conversion method of different DruckerPrager criterion in inhomogeneous slope was put forward. An elastic-plastic FEM for specific inhomogeneous slope was established and the safety factor was calculated by using SSR technique based on the Drucker-Prager yield criterion. Comparing with the solution of traditional limit equilibrium method,the proposed method was proved to be feasible in inhomogeneous slope. On this basis,the applicability of different instability criterions in inhomogeneous slope and the effect of mesh size on calculating precision of safety factor were studied. The results show that the effect of uncertain conditions for safety factor can be weakened by contrast to displacement field and characteristics of plastic zone under different strength reduction coefficients and the computing result and potential slip surface obtained based on displacement mutation at certain characteristic position is fairly close to the solution gained by traditional limit equilibrium method,while the results based on the convergence of numerical computations giving large deviation are not fit for engineering precision. It is suggested that the instability criterion which using displacement mutation at certain characteristic position combing with plastic zone juncture should be more reasonable and applicable than the convergence of numerical computations when inhomogeneous slope is analyzed.
【Fund】: 国家自然科学基金青年科学基金资助项目(51208443)
【CateGory Index】: TU43
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【Citations】
Chinese Journal Full-text Database 1 Hits
1 Chen Lihua1,2,3 Jin Xiaoguang1,3(1.College of Civil Engineering,Chongqing University,Chongqing 400045,China;2.China Merchants Chongqing Communications Research & Design Institute Co.Ltd.,Chongqing 400067,China;3.Key Laboratory of New Technology for Construction of Cities in Mountain Area of the Ministry of Education,Chongqing University,Chongqing 400030,China);Study on the applicability of three criteria for slope instability using finite element strength reduction method[J];China Civil Engineering Journal;2012-09
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 PENG Kai1,2,ZHU Jungao1,2,WANG Yuanlong1,2,YU Ting3(1.Key Laboratory of Ministry of Education for Geo-mechanics and Embankment Engineering,Hohai University,Nanjing 210098 China;2.Geotechnical Research Institute,Hohai University,Nanjing 210098,China;3.Hydrochina Chengdu Engineering Corporation,Chengdu 610072 China);Slope stability analysis of rockfill dam by 3-D FEM strength reduction method[J];Yangtze River;2010-03
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3 LI Ya-sheng1,2,3,ZHOU Cui-ying1,2,ZHANG Hui-ming2(1.School of Engineering,Sun Yat-sen University,Guangzhou 510275,China; 2.Research Center for Geotechnical Engineering and Information Technology,Sun Yat-sen University,Guangzhou 510275,China; 3.China Water Resources Pearl River Planning Surveying & Designing Co.Ltd,Guangzhou 510610,China);Stability Analysis of Slope by Using Strength Reduction FEM Based on the Criterion of Uncontrolled Displacement at Three Characteristic Nodes[J];Yellow River;2012-02
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