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Dynamic Analysis Of High-speed Railway Bridges Applying Bridge-vehicle Interaction

Submitted2021-07-16
Last Update2022-06-27
TitleDynamic Analysis Of High-speed Railway Bridges Applying Bridge-vehicle Interaction
Author(s)Author #1
Author title:Doctor
Name: Abdallah Salama
Org: Department of Structural Engineering, Faculty of Engineering, Zagazig University
Country: Egypt
Email: eng_abdullah203@yahoo.com

Author #2
Author title:Professor
Name: Atef Eraky
Org: Department of Structural Engineering, Faculty of Engineering, Zagazig University
Country: Egypt
Email: atef_eraky@yahoo.com

Author #3
Author title:Engineer
Name: Muhammed Yahya
Org: Department of Structural Engineering, Faculty of Engineering, Zagazig University
Country: Egypt
Email: myehia@zu.edu.eg

Author #4
Author title:Professor
Name: Rania Samir
Org: Department of Structural Engineering, Faculty of Engineering, Zagazig University
Country: Egypt
Email: raniasamir02@gmail.com

Other Author(s)
Contact AuthorAuthor #1
Alt Email: muhammedyahya2014@gmail.com
Telephone:
KeywordsHigh-speed train, Railway bridge, Train-bridge interaction, Dynamic analysis, Resonance.
AbstractThe problem of train passage over bridge is an interaction problem between two systems; the bridge system including track and the passing train system. To consider the bridge-vehicle interaction, a non-linear problem shall be solved because the response of each system depends on the response of the other system simultaneously. Two ways of solving the interaction problem are applied in a FE numerical domain, the first way treats the two systems as one whole system which dynamically updates its stiffness matrix, and the second way considers the transferred forces at contact points between two decoupled systems with constraint equations. The bridge system is modeled as 2D Bernoulli beams and the track as a single continuous non-viscous elastic layer beneath rails with irregularities, and the train system is modeled as separate moving systems with each system having two degrees of freedom (DOFs) and consisting of a lumped mass supported by one layer of suspension system that comprises a spring-damper unit. The parametric study on a non-prismatic continuous prestressed concrete bridge using a high-speed train shows that the interaction models give similar response to moving load model except at resonance speeds for which the latter gives conservative values and higher resonance speeds
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