土体损伤复合体理论的几个基本问题  

Several Basic Problems for Complexus Theory of Soils Damage

作　　者：刘元雪[1] 周家伍[1] 李忠友[1] 

机构地区：[1]后勤工程学院建筑工程系,重庆400041

出　　处：《地下空间与工程学报》2010年第A02期1683-1686,共4页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金(50979112);重庆市自然科学基金项目资助(CSTC;2008BB6144)

摘　　要：土体损伤理论是描述土体结构性问题的有力武器,土体损伤复合体理论是土体损伤理论的重要分支。通过对岩土损伤复合体理论的基本问题进行深入研究,获得的主要成果有:得出了岩土损伤体的应力应变合成合理模式,不能采用简单的并联假设或串联假设;基于损伤是能量耗散的不可逆过程,提出一个新的损伤变量和损伤演化方程;提出了基于岩土损伤复合体理论的一般本构模型,及其各向同性情况下的表达式。The damage theory is an effective tool for the description of the structure of soils, and the complexus theory of soils damage is an important branch of the damage theory of soil. Through the research of the basic problems of the complexus theory of soils damage, some conclusions could be provided ： the reasonable synthesis mode of stress and strain is put forward for the complexus theory of geomaterials damage, the parallel or series assumption can not be adopted. A new damage variable and its evolution equation is obtained based on soil damage is an irreversible process of energy dissipation. The general constitutive model and its special style for isotropic state are provided for the complexus theory of soils damage.

关 键 词：土体 损伤 复合体理论 损伤演化方程 本构模型 

分 类 号：TU457[建筑科学—岩土工程]