Study of dynamic impact factors of two-track continuous and integral railway bridge subjected to high-speed loads
DOI:
https://doi.org/10.56748/ejse.234203Keywords:
Impact factor, FE model, Continuous bridge, Integral bridge, Two-track loadingAbstract
The impact factor (IF) assessment of a four-span non-prismatic continuous and an equivalent integral railway bridge under the action of high-speed moving train loads is conducted in this study. Critical analysis of the full-scale three-dimensional finite element (FE) bridge models is done to investigate the differences in the IFs of all the spans of the two-track railway bridge under various loading conditions. A simplified approach is proposed to identify the dynamic IF values. The results show that for a continuous bridge, with the increase in the load on the bridge, IF coefficients reduce from 0.195 to 0.102. However, for the integral bridge, and considered loading conditions, almost similar IF coefficients (0.100) are obtained. For the intermediate spans, the resonance phenomenon for the integral bridge is achieved at lower speeds compared to the equivalent continuous bridge.
Downloads
References
Brady, S.P., and O'Brien, E.J. 2006. “Effect of vehicle velocity on the dynamic amplification of two vehicles crossing a simply supported bridge.” Journal of Bridge Engineering 11 (2): 250-256. DOI: https://doi.org/10.1061/(ASCE)1084-0702(2006)11:2(250)
Chang, S., 2020. “Active mass damper for reducing wind and earthquake vibrations of a long-period bridge.” In Actuators. MDPI 9 (3): 66. DOI: https://doi.org/10.3390/act9030066
Chopra A.K. Dynamics of Structures Theory and Applications to Earthquake Engineering, New Delhi: Prentice-Hall of India; 2008.
European Committee for Standardisation. Eurocode 1: actions on structures. Part 2: traffic loads on bridges, EN 1991-2; 2003.
Gharad, A.M., and Sonparote, R.S. 2019. “Dynamic soil–structure interaction effects on 3D integral railway bridge under high-speed moving loads.” CURRENT SCIENCE 116 (6): 972-981. DOI: https://doi.org/10.18520/cs/v116/i6/972-981
Gharad, A.M., and Sonparote, R.S. 2020. “Influence of soil-structure interaction on the dynamic response of continuous and integral bridge subjected to moving loads.” International Journal of Rail Transportation 8 (3): 285-306. DOI: https://doi.org/10.1080/23248378.2019.1632753
Gharad, A.M., and Sonparote, R.S. 2021. “Evaluation of vertical impact factor coefficients for continuous and integral railway bridges under high-speed moving loads.” Earthq. Eng. Eng. Vib 20 (2): 495–504. DOI: https://doi.org/10.1007/s11803-021-2034-7
Gou, H., He, Y., Zhou, W., Bao, Y., et al. 2018. “Experimental and numerical investigations of the dynamic responses of an asymmetrical arch railway bridge.” Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232 (9): 2309-2323. DOI: https://doi.org/10.1177/0954409718766929
Green, M.F., Cebon, D., Cole, D.J. 1995. “Effects of vehicle suspension design on dynamics of highway bridges.” Journal of Structural Engineering 121 (2): 272-282. DOI: https://doi.org/10.1061/(ASCE)0733-9445(1995)121:2(272)
Gu, G., Kapoor, A., Lilley, D.M. 2008. “Calculation of dynamic impact loads for railway bridges using a direct integration method.” Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 222 (4): 385-398. DOI: https://doi.org/10.1243/09544097JRRT189
Hamidi, S.A., and Danshjoo, F. 2010. “Determination of impact factor for steel railway bridges considering simultaneous effects of vehicle speed and axle distance to span length ratio.” Engineering Structures 32 (5): 1369-1376. DOI: https://doi.org/10.1016/j.engstruct.2010.01.015
Ichikawa, M., Miyakawa Y., Matsuda A. 2000. “Vibration analysis of the continuous beam subjected to a moving mass.” Journal of Sound and Vibration 230 (3): 493-506. DOI: https://doi.org/10.1006/jsvi.1999.2625
Liu, K., Reynders, E., De Roeck, G., et al. 2009. “Experimental and numerical analysis of a composite bridge for high-speed trains.” J Sound Vib 320: 201–220. DOI: https://doi.org/10.1016/j.jsv.2008.07.010
Miguel, L.F., Lopez, R.H., Torii, A.J. et al. 2016. “Robust design optimization of TMDs in vehicle–bridge coupled vibration problems.” Engineering Structures 126: 703-711. DOI: https://doi.org/10.1016/j.engstruct.2016.08.033
Mu, D., and Choi, D.H. 2014. “Dynamic responses of a continuous beam railway bridge under moving high speed train with random track irregularity.” International Journal of Steel Structures 14 (4): 797-810. DOI: https://doi.org/10.1007/s13296-014-1211-1
Pisal, A.Y., and Jangid, R.S. 2016. “Vibration control of bridge subjected to multi-axle vehicle using multiple tuned mass friction dampers.” Int J Adv Struct Eng 8, 213–227. DOI: https://doi.org/10.1007/s40091-016-0124-y
Soneji, B.B., and Jangid, R.S. 2005. “Effectiveness of Seismic Isolation for Cable-Stayed Bridges.” International Journal of Structural Stability and Dynamics 6, 77-96. DOI: https://doi.org/10.1142/S0219455406001836
Yang, Y.B., Liao, S.S., Lin, B.H. 1995. “Impact formulas for vehicles moving over simple and continuous beams.” Journal of Structural Engineering 121 (11): 1644-1650.
Yang, Y.B., Liao, S.S., Lin, B.H. 1995. “Impact formulas for vehicles moving over simple and continuous beams, Journal of Structural Engineering.” 121(11): 1644-1650. DOI: https://doi.org/10.1061/(ASCE)0733-9445(1995)121:11(1644)
Yang, Y.B., Yau, J.D., Hsu, L.C. 1997. “Vibration of simple beams due to trains moving at high speeds.” Engineering structures 19 (11): 936-944. DOI: https://doi.org/10.1016/S0141-0296(97)00001-1
Youliang, D., and Gaoxin, W. 2016. “Evaluation of dynamic load factors for a high-speed railway truss arch bridge.” Shock and Vibration 2016. DOI: https://doi.org/10.1155/2016/5310769
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Anand M. Gharad, Ranjan S. Sonparote
This work is licensed under a Creative Commons Attribution 4.0 International License.
