Improved response surface method for anti-slide reliability analysis of gravity dam based on weighted regression  

作　　者：Jian-yun CHEN Qiang XY Jing LI Shu-li FAN Qiang xu 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering, Daliatz University of Technology, Dalian 116023, China [2]School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2010年第6期432-439,共8页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the National Basic Research Program of China (Nos. 2007CB714107 and 90510018);the Trans-Century Training Programme Foundation for the Talents by the State Education Com-mission (No. NCET-06-0270),China

摘　　要：The aim of this study was to design and construct an improved response surface method(RSM) based on weighted regression for the anti-slide reliability analysis of concrete gravity dam.The limitation and lacuna of the traditional RSM were briefly analyzed.Firstly,based on small experimental points,research was devoted to an improved RSM with singular value decomposition techniques.Then,the method was used on the basis of weighted regression and deviation coefficient correction to reduce iteration times and experimental points and improve the calculation method of checking point.Finally,a test example was given to verify this method.Compared with other conventional algorithms,this method has some strong advantages:this algorithm not only saves the arithmetic operations but also greatly enhances the calculation efficiency and the storage efficiency.The aim of this study was to design and construct an improved response surface method （RSM） based on weighted regression for the anti-slide reliability analysis of concrete gravity dam. The limitation and lacuna of the traditional RSM were briefly analyzed. Firstly, based on small experimental points, research was devoted to an improved RSM with singular value decomposition techniques. Then, the method was used on the basis of weighted regression and deviation coefficient correction to reduce iteration times and experimental points and improve the calculation method of checking point. Finally, a test example was given to verify this method. Compared with other conventional algorithms, this method has some strong advantages： this algorithm not only saves the arithmetic operations but also greatly enhances the calculation efficiency and the storage efficiency.

关 键 词：Response surface method(RSM) RELIABILITY Gravity dam Singular value decomposition Weighted regression Deviation coefficient 

分 类 号：TV314[水利工程—水工结构工程]