Back analysis of dam mechanical parameters based on least squares support vector machine
LI Bo 1 2, XU Baosong 1 2, WU Jinkun 1 2, HU Jiang 1 2, XU Guanglei 3
1.College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China 2.National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety Hohai University Nanjing 210098 China 3.Nanjing Hydraulic Research Institute Nanjing 210029 China
Abstract：In view of complex nonlinear relationship between dam mechanical parameters and dam displacements,the least squares support vector machine was applied to the back analysis of displacements of dam mechanical parameters.Firstly,the training samples of the least squares support vector machine were obtained by the finite element model,and the complex nonlinear relationship between relative values of water pressure components of dam displacements and mechanical parameters was established.At the same time,actual relative values of water pressure components were isolated from the measured dam displacements by using the partial least squares regression,which were inputted into the least squares support vector machine model,and the values of back analysis of the dam mechanical parameters could be obtained.A concrete gravity arch dam was taken as an example,and the least squares support vector machine was applied to the back analysis of dam elastic modulus,rock deformation modulus and elastic modulus of main faults.Though comparative analysis,it is found that the method is feasible.
李波；徐宝松；武金坤；胡江；徐光磊；. 基于最小二乘支持向量机的大坝力学参数反演[J]. 岩土工程学报, 2008, 30(11): 1722-1725.
LI Bo 1 2, XU Baosong 1 2, WU Jinkun 1 2, HU Jiang 1 2, XU Guanglei 3. Back analysis of dam mechanical parameters based on least squares support vector machine. Chinese J. Geot. Eng., 2008, 30(11): 1722-1725.
