Dynamic Interactions of a Train Moving Over a Rail Suspension Bridge with Multiple Support Settlements

0364231 - ÚTAM 2012 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Yau, Y. D. - Frýba, Ladislav
Dynamic Interactions of a Train Moving Over a Rail Suspension Bridge with Multiple Support Settlements.
Vibration Problems ICOVP 2011 - Supplement. Liberec: Technical University of Liberec, 2011 - (Segĺa, Š.; Tůma, J.; Petríková, I.; Pešek, L.), s. 235-240. ISBN 978-80-7372-759-8.
[International Conference on Vibrational Problems 2011. Praha (CZ), 05.09.2011-08.09.2011]
Grant ostatní: National Science Council of Taiwan(TW) NSC 97-2221-E-032-022-MY2
Výzkumný záměr: CEZ:AV0Z20710524
Klíčová slova: high speed train * ground settlement * suspension bridge * vehicle/bridge interactions
Kód oboru RIV: JM - Inženýrské stavitelství

With the consideration of multiple support settlements, interaction responses of a train running over a rail suspension bridge will be investigated. The suspension bridge is modeled as a single-span suspended beam with hinged ends and the train as successive moving oscillators with identical properties. To conduct this dynamic problem with non-homogeneous boundary conditions, the total deflection response of the suspended beam is divided into two parts: the static component and the dynamic deflection. Then, the coupled equations of motion for the suspended beam carrying multiple moving oscillators are converted into a set of nonlinearly coupled generalized equations by Galerkin’s method, and solved using the Newmark method using incremental-iterative procedure. From the present numerical demonstrations, the differential movements of bridge supports will significantly affect the dynamic response of the running vehicles but insignificant influence on the bridge response.
Trvalý link: http://hdl.handle.net/11104/0199765