Roads and Bridges - Drogi i Mosty
18, 1, 2019, 51-66

Evaluation of seismic behaviour of railway bridges considering track-bridge interaction

Ehsan Dehghani Mail
University of Qom, Department of civil engineering, Khodakaram Blvd., 37195-1519 Qom, Iran
Maryam Najafi Zadeh Mail
University of Qom, Department of civil engineering, Khodakaram Blvd., 37195-1519 Qom, Iran
Azam Nabizadeh Mail
University of Wisconsin-Milwaukee, Department of Civil and Environmental Engineering, Milwaukee, WI 53211, U.S.A
Published: 2019-03-31


Railway bridges have historically performed well in the previous earthquakes. Although this performance has qualitatively been studied in some references such as AREMA code, no quantitative criteria has been proposed for it. Thus, this study aims to present quantitative criteria for railway bridge performance under seismic loads. In the paper, seismic behaviour of railway bridges, with and without track-bridge interaction (TBI), is calculated through finite element modeling. Pushover and incremental dynamic analyses, are utilized to assess the proposed method, considering fourteen records of the past earthquakes. The results clearly show superior performance of the proposed model with track system, in which the deck displacement, base shear, and plastic rotation decrease by 70%-90%, 20%-83%, and 85%-100%, respectively. Finally, two equations are proposed to calculate deck displacement and base shear of railway bridges without performing track-bridge interaction (TBI) by Peak Ground Acceleration (PGA) of the applied record approximately.


incremental dynamic analysis (IDA), nonlinear analysis, pushover analysis, railway bridge, track-bridge interaction (TBI).

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Evaluation of seismic behaviour of railway bridges considering track-bridge interaction

Dehghani, Ehsan; Zadeh, Maryam Najafi; Nabizadeh, Azam. Evaluation of seismic behaviour of railway bridges considering track-bridge interaction. Roads and Bridges - Drogi i Mosty, [S.l.], v. 18, n. 1, p. 51-66, mar. 2019. ISSN 2449-769X. Available at: <>. Date accessed: 22 Apr. 2019. doi: