Application of projection pursuit method in pumping station safety evaluation
CAO Ruizhe1,2, TIAN Lang1,2, GUO Rong1,2, XIAO Junlong1,2
1.Key Laboratory of Efficient Irrigation-Drainage and Agriculture Soil-Water Environment in Southern China, Hohai University, Nanjing, Jiangsu 210098, China; 2.College of Water Conservancy and Hydropower, Hohai University, Nanjing, Jiangsu 210098, China
Abstract：In order to evaluate the in-service pumping station building security status, a pumping station building safety evaluation system is built. Importance of safety evaluation index is analyzed, the projection pursuit method which is an objective weighting method of pumping station building safety evaluation is specially analyzed. Data is calculated according to the measured value of the pumping station building safety evaluation index. It is calculated through the projection pursuit method model, and the calculation results are analyzed,combined with the principle of projection pursuit method based on genetic algorithm. A pumping station in Jiangsu Province is used as an example. Index importanc of each index layer of the pumping station building security status is studied. Two indicator layers: concrete structure safety status and station body stability safety status indicators layer are studied. The projection pursuit model is used to analyze the importance of each evaluation index under each indicator layer. Matlab genetic algorithm toolbox is applied to compute each evaluation index weight. The results show that the measured strength of concrete is most important in the pumping station concrete structure safety status indicator layer, and the index weight of stability against sliding in the pumping station stand body stability safety index layer is the largest.
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