摘要
回顾了圆弧滑动面理论的产生及其在土坡抗滑动稳定分析和极限承载力计算中的应用,并指出了圆弧滑动面理论和刚塑性理论及极限平衡条件的关系及其局限性。介绍了剪切带局部化问题的研究现状,包括一些热点研究领域和最新研究成果。着重介绍了用子负荷面模型模拟超固结黏性土剪切带局部化和用动态剪切带单元模拟摩尔库仑材料剪切带局部化的最新研究成果。对剪切带局部化问题研究提出了几个主要发展方向。
The early history of circular sliding surface theory and its application on the analysis of anti sliding stability of soil slopes and the calculation of ultimate bearing capacity of a strip footing were reviewed. The limitation and relationship with rigid plastic theory and the limit equilibrium condition of circular sliding surface theory were pointed out. The current research situation about shear band localization including some hot research fields and up to date results were also presented. Two examples are presented in detail. One is a numerical simulation that a subloading constitutive model is used to simulate the shear band localization in an overconsolidated clayey soil and another is an example that kinematic shear band elements are used to model the material inhomogeneities of the Mohr Coulomb material due to inception and propagation of discrete shear bands. Finally, several main development directions of localized shear band problem were posed.
出处
《力学季刊》
CSCD
北大核心
2004年第4期484-489,共6页
Chinese Quarterly of Mechanics
关键词
圆弧滑动面
刚塑性理论
极限平衡
剪切带
变形局部化
circular sliding surface, rigid plastic theory, limit equilibrium condition, shear band, deformation localization
