Multi-block combined diagnosis indexes based on dam block comprehensive displacement of concrete dams

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• 作者：Xiangnan Qin^a ; ^b ; ^c ; ^{Qin_xn@163.com" class="auth_mail" title="E-mail the corresponding author} ; Chongshi Gu^a ; ^b ; ^c ; Bo Chen^a ; ^b ; ^c ; Chungao Liu^a ; ^b ; ^c ; Bo Dai^a ; ^b ; ^c ; Yanling Yu^a ; ^b ; ^c
• 关键词：Dam displacement ; Hybrid model ; Comprehensive block displacement ; Multi-block combined diagnosis index
• 刊名：Optik - International Journal for Light and Electron Optics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：172-182
• 全文大小：2098 K

文摘

Timely diagnosis of the service condition of concrete dam is required to prevent the potential great loss of life and property in case of dam failure. Scientific and reliable diagnosis indexes are significant for effective dam diagnosis. Traditional dam diagnosis focused on displacement at a single point. Rational combined diagnosis based on multi-point displacement is rare. This paper presents a multi-block combined diagnosis method for concrete dam displacement. This method combines comprehensive block displacement and multidimensional confidence region method. The hybrid model, together with structure analysis, is selected to perform prediction. Comprehensive block displacement, a displacement system made up of single-point displacements with different weights, is introduced to describe block displacement. The weights are determined with improved projection pursuit method, which is adept in analyzing and processing high-dimensional data. Multi-block combined diagnosis indexes are then established in multidimensional space based on the residual sequences, and the obtained ellipse diagram can be a straightforward and visualized tool for dam diagnosis. The multi-block combined diagnosis method is recommended because of its high accuracy and reliability.