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《Hydro-Science and Engineering》 2011-03
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Elastic stability analysis of multi-trough rectangle aqueduct by beam-shell compound finite strip method

XU Wei1,2,XU Jian-guo2,WANG Bo2(1.School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;2.School of Water Conservancy & Environment,Zhengzhou University,Zhengzhou 450001,China)  
A mathematical model using the beam-shell compound finite strip method is developed to study the elastic stability analysis of multi-trough rectangle aqueducts.The model takes some impacts of transverse stiffeners and crossbars into account.The principle of minimum potential energy is used to deduce the eigenvalue equation for elastic stability problems.To verify the accuracy and efficiency of the beam-shell compound finite strip method,a comparison of the theoretical results of the stability analysis for a rectangle plate with transverse stiffeners is made and the numerical solution of the stability analysis for an actual aqueduct is calculated through the model and other methods.The stability analysis results of an actual aqueduct show that the buckling coefficient decreases as the water level increases while buckling mode remains constant;and the prestressed load has a great impact on not only the buckling coefficients but also the buckling modes.
【Fund】: 河南省基础与前沿技术研究计划资助项目(082300440070);; 河南省科技攻关资助项目(0424470011)
【CateGory Index】: TV672.3
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