【作者】 刘耀儒； 黄跃群； 杨强； 王峻；

【Author】 LIU Yaoru,HUANG Yuequn,YANG Qiang,WANG Jun(State Key Laboratory of Hydroscience and Hydraulic Engineering,Tsinghua University,Beijing 10084,China)

【机构】 清华大学水沙科学与水利水电工程国家重点实验室；

【摘要】 变形加固理论是主要研究荷载超出结构极限承载力的理论。它指出,对给定外荷载下的结构,结构出现不平衡力的区域即为首先破坏的区域。在详细阐述变形加固理论两个重要概念——不平衡力和塑性余能范数的基础上,通过典型边坡算例,分析了边坡位移和不平衡力、塑性余能范数三者之间的关系,以及迭代过程中不平衡力的转移规律。结果表明,不平衡力的转移和积累以及塑性余能的不断增加是边坡失稳的内在因素,位移变形的变化规律是边坡失稳的外在表现,变形和稳定相互关联,在工程实际中通过对变形及其变化规律的观测是一种判断边坡稳定状态的有效手段。更多还原

【Abstract】 Deformation reinforcement is the theory generally used to analyze the situation when load is beyond the ultimate bearing capacity of the structure.It points out that under the given external loads,the area which comes to unbalanced forces is the first place to be destroyed in the structure.In this paper,we introduce the deformation reinforcement theory and its two main conceptions,which are unbalanced forces and plastic complementary energy,and then we get this theory for the stability analysis of an overloaded slope,and analyze the relationship between the slope’s displacement and its unbalanced forces and plastic complementary energy,and then we place the changing law of unbalanced forces in the slope.The result shows that the unbalanced forces and the plastic complementary energy are the intrinsic factors of the slope’s deformation failure,and the deformation is the extrinsic behavior of the accumulation of unbalanced forces and plastic complementary energy in the slope body,the deformation and stability are correlated.As the deformation reinforcement theory points out that the place which comes into being unbalanced forces is the first place to be destroyed.Therefore,the deformation and its change law can be used to judge the stability of the slope.更多还原