1
Faculty of engineering, University of Qom, Qom, Iran.
2
Civil Engineering department, Faculty of Engineering, University of Qom, Qom, Iran
Abstract
Track–bridge interaction analysis is required to determine the longitudinal stresses and displacements of a coupled system under various temperatures, trainloads, train braking and seismic loading and to guarantee the serviceability and safety of track structures. Thus, considering that part of the track resting on the subgrade is of essential importance. In previous studies, researchers used many springs with suitable length of rail (at least equal to the length of the bridge on each side) for modelling of track on the subgrade outside the bridge. This paper using a new approach provides one spring with equivalent longitudinal stiffness to simplify modelling. Formulation of spring stiffness and the length of stressed rail in both elastic and inelastic case are extracted from a simulation of connected springs. Proposed model is validated via an FEM analysis. Total stiffness of structure and effective length of rail on subgrade outside the bridge show a good agreement with those determined by FEM analysis. Finally, temperature, braking and seismic (pushover) loading were analyzed on the previous and proposed model. Results were compared with each other which showed very good agreement.
Najafi Zadeh, M., & Dehghani, E. (2018). New Approach for Elastic and Inelastic Modeling of Track-Bridge Interaction. Journal of Transportation Research, (), -.
MLA
Maryam Najafi Zadeh; Ehsan Dehghani. "New Approach for Elastic and Inelastic Modeling of Track-Bridge Interaction". Journal of Transportation Research, , , 2018, -.
HARVARD
Najafi Zadeh, M., Dehghani, E. (2018). 'New Approach for Elastic and Inelastic Modeling of Track-Bridge Interaction', Journal of Transportation Research, (), pp. -.
VANCOUVER
Najafi Zadeh, M., Dehghani, E. New Approach for Elastic and Inelastic Modeling of Track-Bridge Interaction. Journal of Transportation Research, 2018; (): -.
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