Browse > Article

Rail-Stress of High-Speed Railway Bridges using tong Rails and subjected to Spatial Variation of Ground Motion Excitations  

Ki-Jun Kwon (Department of Safety Engineering, Hankyong National University)
Yong-Gil Kim (Youil Ensys, R&D Center)
Publication Information
Journal of the Korean Society of Safety / v.18, no.2, 2003 , pp. 132-138 More about this Journal
Abstract
The use of long rails in high-speed railway bridges causes additional stresses due to nonlinear behaviours between the rail and bridge decks in the neighbourhood of the deck joints. In the seismic response analysis of high-speed railway bridges, since structural response is highly sensitive to properties of the ground motion, spatial variation of the ground excitation affects responses of the bridges, which in turn affect stresses in the rails. In addition, it is shown that high-speed trains need very long distances to stop when braking under seismic occurrence corresponding to operational earthquake performance level so that verification of the safe stoppage of the train is also required. In view of such additional stresses due to long rails, sensibility of structural response to the properties of the ground motion and braking distance needed by the train to stop safely, this paper proposes and establishes a time domain nonlinear dynamic analysis method that accounts for braking loads, spatial variation of the ground motion and material nonlinearities of rails to analyze long rail stresses in high-speed railway bridges subjected to seismic event. The accuracy of the proposed method is demonstrated through an application on a typical site of the Korean high-speed railway.
Keywords
long rail; dynamic nonlinear analysis; relative displacement of decks; stresses in rail; spatial variation of ground motion; high-speed railway bridge;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kim Y-G., Kwon K-J., and Koh H-M., 'Long Rails Stress Analysis of High Speed Railway Continuous Bridges subject to Operating Basis Earthquake'Journal of the Earthquake Engineering Society of Korea, Vol. 6, No.5, October 2002
2 Einenmann J., Leykauf G., and Manner L., 'Recent Developments in German Railway Track Design,' Transport, 1994, pp. 91-96
3 Kim Yong-Gil, 'Rail Structure Interaction of Simple Span Bridges for the Taiwan High Speed Railway'Journal of the Korean Institute for Industrial Safety, Vol. 16, No.2, June 2001, pp.13Q-135
4 Hasuda T., Takei Y., and Yamada S., 'Revision of the structural design for over track buildings,' Railway Technical Research Institute, Japan, 1992
5 Prernersberger G., and Rojet R., 'Structural System for the Transmission of Longitudinal Force on Railway Bridges,' Engineering structures, DB New Line Mannheim-Stuttgart, No.4, 1987
6 'Taiwan High Speed Railway Design,' Vol. 9, Taiwan High Speed Rail Corporation, 2000
7 'Highway Bridges Design Standards,' Korean Ministry of Construction and Transportation, 2002
8 'UIC(Union lnternationale des Chemins de Fer) Code,' International Union of Railways, 1985
9 Korea Railroad Technical Corporation, 'Proposal for Design Codes of Concrete Structures (RC and PC) of High-Speed Railway,' 1991
10 EESK(Earthquake Engineering Society of Korea), and RCCT(Research Center for Construction Technology), 'Seismic Design Standards (II) Provisions,' Korean Ministry of Construction and Transportation, December 1997