Vibration of a suspension bridge installed with a water pipeline and subjected to moving trains

doi:10.1016/j.engstruct.2007.05.006

淡江大學機構典藏 > 工學院 > 建築學系暨研究所 > 期刊論文 > Item 987654321/59345

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题名:	Vibration of a suspension bridge installed with a water pipeline and subjected to moving trains
作者:	姚忠達;Yau, J.D.;Yang, Y.B.
贡献者:	淡江大學建築學系
关键词:	Flowing mass;Moving loads;Pipeline;Resonance;Suspension bridge;Vibration
日期:	2008-03
上传时间:	2011-10-02 15:49:19 (UTC+8)
出版者:	Oxford: Pergamon
摘要:	This Paper presents a first study on the vibration of a suspension bridge installed with a water pipeline and subjected to moving trains. The suspension bridge is modeled as a single-span beam suspended by the hangers and hinged at the two ends. The train is simulated as a sequence of equidistant moving loads with identical weights. The liquid flowing through the pipeline is simulated as a strip of continuous mass moving at constant speeds. The governing equation is transformed into the generalized coordinates by Galerkin's method, and solved by a rigorous incremental-iterative procedure that takes into account all the nonlinear effects. The results indicate that the critical position for the maximum acceleration of the suspended beam to occur under the moving loads depends upon the modal shape that has been excited, which can be antisymmetric or symmetric. The inertial effect of the flowing mass is beneficial for mitigating the vehicle-induced acceleration of the suspended beam, if the flowing speed is kept below the first resonant speed of the moving loads. (C) 2007 Elsevier Ltd. All rights reserved.
關聯:	Engineering Structures 30(3), pp.632-642
DOI:	10.1016/j.engstruct.2007.05.006
显示于类别:	[建築學系暨研究所] 期刊論文

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