Span length influence on dynamic response of selected bridge under high - speed train

• Autorzy: Szurgott P. , Bernacki P.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a methodology of finite element (FE) modelling and simulation of the bridge – track – moving high-speed train system using CAE systems. Two composite (reinforce-concrete – steel) bridges were considered. The span length was equal to 15 and 21 meters, respectively. Bridges selected for the study belong to the proposed series of bridges with the span length of 15 to 27 meters stepped by 3 meters. Full symmetry of the bridges was assumed. RC platform was homogenized since the rebars were distributed quasi-uniformly in the specified platform sections. The FE model of a bridge superstructure consisted of 4-node shell elements (main beams) and 8-node 48 DOF solid elements (reinforced concrete platform). RAIL_TRACK and RAIL_TRAIN LS-DYNA’s modules were applied for simulating the moving train – track interaction. Ballasted track with the rectilinear rail-line axis was taken into consideration. German ICE-3 train running at velocity of 200–300 km/h was selected as a representative for the study. All mass components of the train FE model were treated as rigid bodies. Symmetric vibrations of the train units were assumed with respect to the main longitudinal vertical plane of symmetry of the system. Nodal displacement and longitudinal normal stress in shell elements were registered during the FE analysis. The results were depicted in the form of time histories for selected velocities. In addition, extreme values of vertical deflections and normal stress were compiled and presented a function of train velocity. It allowed to assess the dynamic response of the bridge depending on its span length. Contours of resultant displacement for the RC platform was also presented.

Słowa kluczowe

EN

railway bridge; composite bridge; ballasted track; high-speed train; modelling and simulation

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 1
• Strony: 343--350
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Szurgott P.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone]

autor

Bernacki P.

• Military University of Technology Department of Mechanics and Applied Computer Science Gen. Sylwestra Kaliskiego Street 2, 00-908 Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

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• [7] Klasztorny, M., Vibrations of Single-Track Railway Bridges Under High-Speed Trains [in Polish], Wroclaw University of Technology Press, Wroclaw, Poland 1987.
• [8] Matsuura, A., Dynamic Behavior of Bridge Girder for High Speed Railway Bridge, RTRI Quarterly Reports, Vol. 20, Iss. 2, pp. 70–76, 1979.
• [9] Niemierko, A., et al., Reinforcing the Track and the Subgrade in the Approach Zones to Engineering Objects [in Polish], Project No. M1-123, Research Institute for Roads and Bridges, Warsaw, Poland 2009.
• [10] Polish Standard: PN-H-84027-07:1984. Steel for Rail-Engineering. Normal Rails. Sorts [in Polish], PKN, Warsaw, Poland 1984.
• [11] Steimel, A., Electric Traction – Motion Power and Energy Supply: Basics and Practical Experience, Oldenbourg Industrieverlag GmbH, 2007.