摘要
基于遗传算法的直接随机寻优特性,首先介绍了采用实数编码遗传算法反演物理力学参数的基本步骤,然后在三维有限单元法的基础上,结合水平位移等大坝安全监测资料,提出了大坝坝体弹性模量和坝基变形模量的反演方法。并结合某重力坝8#坝段的安全监测资料,利用该方法反演得到了该大坝坝体弹性模量和坝基变形模量。算例表明,采用遗传算法—三维有限单元法反演大坝坝体及坝基的物理力学参数是可行的。
Based on the characteristics of directly and randomly optimumsearching, the basic steps of inversion for mechanical parameters from realcoded genetic algorithm are recommended. And on the basis of 3D finite element method, the elastic modulus of dam body and deformation modulus of dam foundation are presented with the observation data of displacement. As an example, the approach is applied to the monolith No.8 of some gravity dam and the mechanical parameters of dam body and dam foundation are inversely computed. The example shows that the approach of inverse analysis for mechanical parameters of dam body and dam foundation is feasible by combining genetic algorithm with 3D finite element method.
出处
《长江科学院院报》
CSCD
北大核心
2003年第6期55-58,共4页
Journal of Changjiang River Scientific Research Institute
基金
国家自然科学基金重点项目(50139030)
教育部博士点基金(20020294005)
