International Journal of Railway Research
Iran University of Science & Technology
Sun, Jul 13, 2025
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Volume 12, Issue 1 (1-2025)
IJRARE 2025, 12(1): 34-39 |
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Taghipour A, Zakeri J A, Ghozat A, Mosayebi S A. Dynamic Behavior Assessment of a Railway Bridge in Isfahan under Over-Height Vehicle Collision Loads and Proposing Maintenance Strategies to Enhance Its Performance. IJRARE 2025; 12 (1) :34-39
URL: http://ijrare.iust.ac.ir/article-1-369-en.html
URL: http://ijrare.iust.ac.ir/article-1-369-en.html
School of Railway Engineering, Iran University of Science and Technology, Tehran, Iran
Abstract: (134 Views)
In recent years, collisions between over-height road vehicles and railway bridge superstructures have become increasingly common, especially in urban areas, compromising structural safety and traffic flow. For instance, in Beijing, approximately 50% of bridges are exposed to impact loads, with around 20% of these impacts resulting from truck tops striking bridge superstructures, leading to damage to girders and concrete decks. In Iran, similar incidents have caused severe structural damage to railway bridges, creating uncertainties in bridge serviceability, operational safety, and in some cases, line closures. This study investigates the dynamic behavior of a railway bridge located in the Badrud–Spidan region of Isfahan under the impact of a truck top colliding with its superstructure. A three-dimensional finite element model of the bridge and the impact load was developed using ABAQUS software. The collision force was simulated as a time-dependent impulsive load applied at mid-span. The dynamic responses analyzed include displacement and acceleration time-history diagrams of the main structural elements such as girders and flat concrete slabs. The results indicate that applying honeycomb-structured aluminum sheets along the impact zone on the concrete girders significantly mitigates impact severity. Moreover, using vibration-absorbing materials to dampen responses and reduce damage to the structural components is shown to be highly effective.
Type of Study: Research |
Subject:
Railway Transportation
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