南水北调与水利科技2012，Vol.10Issue(4)：140-143,4.DOI:10.3724/SP.J.1201.2012.04140
基于混沌遗传算法的碾压混凝土坝力学参数反分析
Back Analysis for Mechanical Parameters of Roller Compacted Concrete Dam Based on the Chaos Genetic Algorithms
摘要
Abstract
The physical and mechanical parameters of the dam are an important indicator for measuring the quality of the dam, therefore how to obtain the presently physical and mechanical parameters of the roller compacted concrete dam is important to analyze and evaluate the safety behavior of the dam. In this paper, the inverse problem of the mechanical parameters of the roller compacted concrete dam was treated as the optimization problem based on the study on the construction process, compaction mechanism, and surface characteristics of the dam, and thus the back analysis method and theory to determine the mechanical parameters of the roller compacted concrete dam were established. The chaos genetic algorithms were introduced in dealing with the optimization problem to overcome the precocious shortcomings of the traditional genetic algorithms,and it was applied to inversely analyze the transversely isotropic deformation parameters and gradient parameters of a roller compacted concrete dam. Finally, the simulated and measured parameters for the transversely isotropic model and gradient model were compared and analyzed, which confirmed that the accuracy of the back analysis method and theory and the reasonableness and validity of the gradient parameter model.关键词
碾压混凝土坝/黏弹性参数/混沌遗传算法/反演Key words
toailer compacted concrete dam/ viscoelastic parameters/ chaos genetic algorithms/ inverse analysis分类
水利科学引用本文复制引用
牛景太..基于混沌遗传算法的碾压混凝土坝力学参数反分析[J].南水北调与水利科技,2012,10(4):140-143,4.基金项目
水利部公益性行业专项项目“农村小河流综合治理关键技术研究与示范”(201201016) （201201016）
江西省科技支撑计划项目(2010BSA16800) （2010BSA16800）
