基于非局部化方法的边坡稳定性分析

• 作 者: 王小平 封金财
• 机 构: 常州大学岩土工程研究所,
• 出 处: 岩土力学
• 发表日期: 2011年S1期
• 关键词: 局部化方法 应变局部化 稳定性影响 分析结果 应力法 塑性本构模型 边坡 有限元方法

应变局部化问题已经成为岩土力学研究的一个重要课题,边坡的稳定性分析必然要考虑这种应变局部化对边坡的稳定性影响。结合Bazant等的非局部化模型方法,将其推广应用到弹黏塑性本构模型中去,考虑两种正则化机制的耦合作用,并采用有限元方法结合滑面应力法对边坡的稳定性进行分析。将数值分析结果与极限平衡法和基于线弹性本构的滑面应力法结果进行了对比,从分析结果来看文中的计算结果是合理的,对实际工程具有一定的指导意义。

Strain localization has become an important issue in the research of geomechanics. The stability analysis of slopes inevitably needs to consider the influence of such strain localization on slope stability. Combined with the non-localized model method of Bazant et al., It is generalized to the visco-visco-plastic constitutive model. The coupling between the two regularization mechanisms is considered. The stability of the slope is analyzed by finite element method Analyze. The results of numerical analysis are compared with the results of the limit equilibrium method and the sliding surface stress method based on the linear elastic constitutive equation. From the analysis results, the calculation results in the paper are reasonable and have certain guiding significance for practical engineering.