扰动状态概念模型在三峡大坝3^#坝段稳定性分析中的应用  

Application of Disturbed State Model in Stability Analysis of 3~# Section of Three Gorge Dam

作　　者：王德玲[1] 葛修润 

机构地区：[1]长江大学城市建设学院,湖北荆州434023 [2]武汉岩土力学研究所,湖北武汉430071

出　　处：《长江大学学报（自然科学版）》2005年第10期369-372,共4页Journal of Yangtze University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(10172057)

摘　　要：采用扰动状态概念模型分析三峡大坝3#坝段的稳定性。材料的本构模型采用扰动状态概念本构模型,其中岩石和混凝土的模型参数可根据所提供的材料基本参数及单向压缩试验和常规三轴压缩试验求得;而断层的扰动状态概念模型参数则根据位移反分析法反演,反演时采用遗传算法进行优化。分析大坝稳定性时,采用强度储备法进行追踪计算,采用VC++与Matlab混合编程的方法编制了三维有限元程序进行数值计算,把控制点位移出现拐点确定为坝段的抗滑安全系数,以此得到合理的安全系数。The stability analysis of 3~# section of Three Gorge Dam is researched in detail.The constitutive model of material adopts the disturbed state concept model.The parameters of rock and concrete can be obtained by using offered basic parameters and uniaxial and general triaxial experiments.Parameters of disturbed state model of faultage are back analyzed by displacement back analysis which is optimized by genetic algorithm.Then real code scheme,adaptive function,selection operator,numerical cross and non-uniform mutation operator and handle of constrained condition of GA are studied.When the dam stability is analyzed,a strength repertory method is used to make tracing computation and Matlab and VC++ are mixed to establish a 3D finite program for numerical calculation.The inflexion of displacement of controlled points are used as anti-slide parameters.Then reasonable safe parameters are obtained.

关 键 词：扰动状态概念模型 位移反分析 遗传算法 强度储备法 三峡大坝 

分 类 号：TU452[建筑科学—岩土工程]