土工结构物的稳定性数值分析  

Numerical analysis for stability of soil structure

作　　者：罗晓辉[1] 邹金林[1] 

机构地区：[1]华中科技大学土木工程学院,湖北武汉430074

出　　处：《岩土力学》2001年第2期148-151,共4页Rock and Soil Mechanics

摘　　要：结构性土体的剪切破坏实质是土的结构损伤导致其力学性质劣化的最终形式。基于应变等效原理，借助非线弹性的Duncan－Chang模型建立了土体宏观损伤演化方程，并以三轴试验予以分析。定义土工结构物的安全系数为极限损伤与承载能力极限状态下的最大损伤变量之比，提出相应的滑动面分析方法，并给出了应用算例。The shear failure of ceremented soil is the ultimate form of deterioration of mechanical property induced by the structural damage of soil mass. Based on the principle of equivalent strain, the equation of damage evolution for ceremented soil are obtained with the Duncan-Chang Model describing nonlinear elasticity and analyzed with the data of triaxial shear test. The ratio between limit damage variable and maximal damage variable under the normally applied limit state of bearing capacity is defined as the safety factor of soil structure and analytical method of sliding surface is given. Application example is shown with the case.

关 键 词：结构性土体 损伤变量 损伤演化方程 安全系数 稳定性 土工结构物 

分 类 号：TU432[建筑科学—岩土工程]