Abstract
An analytical study is presented for the slender suspension bridge with inclined wind-resistant ropes (i.e., wind-guys) susceptible to coupled flexural and torsional vibrations. Based on the linearized deflection theory of classical suspension bridges, the modal coupling mechanism of a single-span footbridge is studied analytically. The free vibration analysis is conducted to obtain the closed-form solutions of modal frequencies and modal shapes of the suspended beam with horizontal wing guys, from which the key parameters and coupling factors dominating the flexural–torsional coupled vibrations are identified. To evaluate the coupling nature of flexural–torsional vibrations for the suspended beam, the modal-based coupling contribution factor is presented in this study.
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Acknowledgements
The research reported herein is sponsored partially by the grant from the Ministry of Science and Technology, Taiwan through the serial Nos. (MOST 102-2923-E-032-002-MY3, 106-2923-E-002-007-MY3, 106-2221-E-032-022) and by Chongqing Science and Technology Commission via Grant No. cstc2015jcyjys30003. Such financial aids are gratefully acknowledged.
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Yang, Y.B., Yau, J.D. (2019). Dynamic Coupling Characteristics of Slender Suspension Footbridges with Wind-Resistant Ropes. In: Matveenko, V., Krommer, M., Belyaev, A., Irschik, H. (eds) Dynamics and Control of Advanced Structures and Machines. Springer, Cham. https://doi.org/10.1007/978-3-319-90884-7_21
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DOI: https://doi.org/10.1007/978-3-319-90884-7_21
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