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Three-dimensional Stability Analysis of Slopes with Weak InterlayerBased on Elastoplastie Numerical Method
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[1]YUAN Wei.,HUANG Maosong,LIU Yilin.Three-dimensional Stability Analysis of Slopes with Weak InterlayerBased on Elastoplastie Numerical Method[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):1-4.[doi:10.3969/j.issn.1671-6833.2012.05.001]
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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 33卷 Number of periods: 2012 05 Page number: 1-4 Column: Public date: 2012-09-10
Title:
Three-dimensional Stability Analysis of Slopes with Weak InterlayerBased on Elastoplastie Numerical Method
Author(s):
YUAN Wei.; HUANG Maosong; LIU Yilin
1, Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, "Tongii University, Shanghai 200092China; 2. Department of Geotechnical Engineering, Tongji University, Shanghui 200092, China; 3. Research Institute of Highway Ministry of ’Transport, Beijing 100088, China; 4. Key Laboratory of Road Construction & Material of Ministry of Transport,Beijing 100088，China
Keywords:
three-dimensional interlayer slope ;  strength reduction elastoplastie finite element method;  safety coefficient
CLC:
TU457
DOI:
10.3969/j.issn.1671-6833.2012.05.001
Abstract:
This paper analyzes the impact of the weak interlayer on the 3D slope stability and failure mode.Example of a classic 3D slope is calculated and the results were compared with the limit equilibrium method toverify the reliability of strength reduction elastoplastic finite element method. And then an example of a 3Dglope with weak interlayer is analyzed, the results show that; the ellipsoid failure surface in the longitudinallength calculated by strength reduction elastoplastic finite element method is larger than the limit equilibriummethod; compared with the 3D homogeneous slope, the factor safety of 3D slope with weak interlayer is muchlower, the scope of failure surface is much larger, the phenomenon of the concentration of plastic strain zone ismore obvious, and the failure mode has many signifcant differences.
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