岩土损伤复合体理论的应力应变合成模式研究  

Synthesis Mode of Stress and Strain for Complexus Theory of Geomaterials Damage

作　　者：刘元雪[1] 周建廷[2] 李忠友[1] 

机构地区：[1]后勤工程学院建筑工程系,重庆400041 [2]重庆交通大学科技处,重庆400074

出　　处：《重庆建筑大学学报》2008年第4期64-67,共4页Journal of Chongqing Jianzhu University

基　　金：国家自然科学基金项目(50309017);重庆市科委资助

摘　　要：近年来岩土损伤本构模型取得了长足的进步,但岩土材料损伤复合体理论的一个基本问题——复合体两个组分的应力、应变合成模式上存在争议。从损伤力学的基础——连续介质力学的基本概念出发,对岩土损伤复合体理论应力应变合成的合理模式进行了深入研究。得出了一般损伤情况下的岩土损伤复合体理论的应力应变合成公式,给出了各向同性损伤情况下的简化公式,认为对于岩土损伤复合体理论不能直接采用并联、串联或简单的混合类型复合模式。Although the constitutive model for geomaterial damage has developed significantly, there is still dispute regarding the synthesis mode of stress and strain for the complexus theory of geomaterials damage. The synthesis mode of stress and strain for the complexus theory of geomaterials damage was studied in depth in light of the basic concepts of continuum mechanics. A general synthesis mode of stress and strain for the complexus theory of geomaterials damage is put forward. A simplified formula of the synthesis mode of stress and strain for the complexus theory of geomaterials damage in isotropic damage has been obtained. It is concluded that a parallel, series or simple mixed assumption can not be applied directly to the synthesis mode of stress and strain for the complexus theory of geomaterials damage.

关 键 词：岩石 土 损伤 复合体理论 应力 应变 

分 类 号：TU45[建筑科学—岩土工程]