| 有限差分强度折减法求解边坡稳定性 |
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| 引用本文： | 张超,杨春和.有限差分强度折减法求解边坡稳定性[J].华中科技大学学报(城市科学版),2011,28(2). |
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| 作者姓名： | 张超 杨春和 |
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| 作者单位： | 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,湖北 武汉,430071 |
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| 基金项目： | 国家自然科学基金(51004099); 国家重点基础研究发展计划(973计划)项目(2009CB724602); 岩土力学与工程国家重点实验室前沿探索性项目(SKLQ003) |
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| 摘 要： | 在比较传统的极限平衡法和有限元强度折减法的同时,介绍了有限差分强度折减法的原理和具体步骤。基于有限差分FLAC程序,通过算例研究了有限元强度折减法与有限差分强度折减法的计算结果,验证了有限差分强度折减法的可靠性。分析了有限元强度折减法与有限差分强度折减法计算结果的差异性,并指出了有限差分强度折减法的优点为能够对具有复杂地质条件的边坡进行稳定性分析,可考虑土体的非线性弹塑性本构关系,能够模拟土坡的失稳过程及其滑移面形状,可直接采用摩尔-库伦屈服准则,适用于可能产生大变形的边坡。并得出了有限差分强度折减法适用于边坡的稳定性分析且满足工程精度需求的结论。
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| 关 键 词： | 有限差分 强度折减 边坡 稳定性 |
Stability Analysis of Slope by Strength Reduction FDM |
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| ZHANG Chao,YANG Chun-he.Stability Analysis of Slope by Strength Reduction FDM[J].Journal of Huazhong University of Science and Technology,2011,28(2). |
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| Authors: | ZHANG Chao YANG Chun-he |
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| Affiliation: | ZHANG Chao,YANG Chun-he(State Key Laboratory of Rock and Soil Mechanics,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China) |
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| Abstract: | The theory and detailed steps of strength reduction finite difference method were introduced and compared with traditional limit equilibrium method and strength reduction finite element method.Based on FLAC,the validity of strength reduction finite difference method was testified.The differences of strength reduction finite difference method from limit equilibrium method and strength reduction finite element method were analyzed.The analysis results show that the nonlinear elastoplastic constitutive model o... |
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| Keywords: | finite difference strength reduction slope stability |
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