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《Journal of Hefei University of Technology(Natural Science)》 2006-04
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A kind of reliability computational method based on reconstruction of the response surface

ZHANG Yang-yong,CAI Min(School of Civil Engineering,Hefei University of Technology,Hefei 230009,China)  
In this paper,the quadratic polynomial function is used to reconstruct the response surface in search of the possible breakdown point,and the BP neural network is adopted to reconstruct the response surface around the possible breakdown point,fitting the limit state function.Then according to the method of Monte Carlo in the optimization theory,the reliability index of the structure can be obtained.Compared with other methods of reconstructing response surfaces,the method in this paper works easily and has high precision.The calculation program of reliability can be compiled conveniently and quickly by using the engineering calculation language,Matlab,for it adopts the matrix method and provides a great many toolboxes including such functions as optimization,statistics and neural network and the language is simple,making the program compiling efficient.
【CateGory Index】: TU311.2
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