Response surface and genetic method of deformation back analysis for high core rockfill dams

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• 作者：Qinqin Guo^a ; ^{Guoqqscu@126.com" class="auth_mail" title="E-mail the corresponding author} ; Liang Pei^a ; ^{m18782193356@163.com" class="auth_mail" title="E-mail the corresponding author} ; Zhengjun Zhou^b ; ^{zhouzhengjun66@126.com" class="auth_mail" title="E-mail the corresponding author} ; Jiankang Chen^a ; ^{scu-jiankang@163.com" class="auth_mail" title="E-mail the corresponding author} ; Fuhai Yao^c ; ^{1275793651@qq.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Core rockfill dam ; Response surface method ; Genetic algorithm ; Deformation back analysis
• 刊名：Computers and Geotechnics
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：74
• 期：Complete
• 页码：132-140
• 全文大小：1071 K

文摘

High core rockfill dams exhibit complex deformation mechanisms because of complicated geological conditions, many material partitions and severe weather conditions. When realistic parameters cannot be obtained through laboratory tests or engineering analogies because of effects of size or time, back analysis is necessary to predict deformation characteristics. This paper proposes a method of deformation back analysis based on the response surface method and genetic optimization theory. The parameters of the creep and Duncan–Chang models for the Pubugou gravelly soil core rockfill dam are sequentially calculated. Back analysis performed using this method efficiently yields more precise results than those obtained from laboratory-determined parameters.