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《Chinese Journal of Underground Space and Engineering》 2010-05
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The Application of Random Weighting Method in Determining the Parameters of Geotechnical Engineering

Zhang Lei1,Hu Wei1,Xu Zhijun2,Liu Yuwu3 (1.Department of Civil Engineering,Nanyang Institute of Technology,Nanyang,Henan 473004,China.2.College of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China 3.Nanyang Wolong Water Resources Bureau,Nanyang,Henan 473007,China.)  
With the different parameters selection,Beta distributions can be transformed into various other distribution,ranging from simple distribution to complex distribution,from symmetrical distribution to asymmetrical distribution.So Beta distribution is a highly adaptable and recommended to fit for the types of random variables distribution in Geotechnical Engineering.The random weighting method is employed to determine the four parameters of Beta distribution,for it can more accurately estimate these four parameters,the random weighting method not only solves the cumbersome iterative process of the traditional algorithm,but also avoids the non-convergence phenomenon in the process of iteration.It is shown that the accuracy of random weighting method can meet the engineering needs,which possesses important practical significance for the project.
【CateGory Index】: TU43
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