岩土损伤复合体理论的应力应变合成模式  

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

作　　者：刘元雪[1] 陈忱[1] 周家伍[1] 李忠友[1] 

机构地区：[1]后勤工程学院军事建筑工程系

出　　处：《后勤工程学院学报》2008年第3期7-10,14,共5页Journal of Logistical Engineering University

摘　　要：近年来，岩土损伤本构模型取得了长足的进步，但在岩土材料损伤的复合体理论的一个基本问题——复合体的两个组分的应力、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简单地采用并联、串联假设。Although the damage constitutive model for geomaterial has developed significantly, the dispute on synthesis mode of stress and strain for complexus theory of geomaterials damage still exist. The synthesis mode of stress and strain for complexus theory of geomaterials damage is studied based on the basic concept of continuum mechanics. The general synthesis mode of stress and strain for complexus theory of geomaterials damage is put forward. The simplified formulas of synthesis mode of stress and strain for complexus theory of geomaterials damage in the condition of isotropic damage are provided. The parallel or series assumption cannot be applicable to the synthesis mode of stress and strain for complexus theory of geomaterials damage.

关 键 词：岩石 土 损伤 复合体理论 本构关系 

分 类 号：TU45[建筑科学—岩土工程]