一个基于广义塑性力学的土体三屈服面模型  

A three yield -surface model for soilmasses based on the generalized plastic mechanics

作　　者：孔亮[1] 郑颖人[2] 王燕昌[1] 

机构地区：[1]宁夏大学物电系,宁夏银川750021 [2]后勤工程学院军事土木工程系,重庆400041

出　　处：《岩土力学》2000年第2期108-112,共5页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目! (编号 :196 72 0 73)

摘　　要：按照广义塑性力学原理 ,以前人试验结果为依据 ,首次提出应力洛德角方向上剪切屈服面γpθ 的数学表达式 ,并建立土体的三屈服面模型。结合数值算例 ,设计多种计算方案 ,通过对计算结果的分析和比较 ,表明模型的合理性和有效性 。According to the principle of generalized plastic mechanics,the mathematical expression of the shear yield surface in the Lode angle θ σ direction is presented initially and a three yield surface model for soilmasses is established based on the experiment of previons researchers. In combination with the numerical example,many calculating schemes are designed. The comparison and analysis of various calculated results have shown the validity of the model. The effects caused by various factors on the deformation of soilmasses are discussed.

关 键 词：广义塑性力学 rθ^p剪切屈服面 本构模型 土体变 

分 类 号：TU43[建筑科学—岩土工程]