Numerical Simulation of Vertical Random Vibration of Train-Slab Track-Bridge Interaction System by PEM
Joint Authors
Zeng, Zhi-ping
Yu, Zhi-wu
Zhao, Yan-gang
Xu, Wen-tao
Chen, Ling-kun
Lou, Ping
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-21, 21 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-12
Country of Publication
Egypt
No. of Pages
21
Main Subjects
Abstract EN
The paper describes the numerical simulation of the vertical random vibration of train-slab track-bridge interaction system by means of finite element method and pseudoexcitation method.
Each vehicle is modeled as four-wheelset mass-spring-damper system with two-layer suspension systems.
The rail, slab, and bridge girder are modeled by three-layer elastic Bernoulli-Euler beams connected with each other by spring and damper elements.
The equations of motion for the entire system are derived according to energy principle.
By regarding rail irregularity as a series of multipoint, different-phase random excitations, the random load vectors of the equations of motion are obtained by pseudoexcitation method.
Taking a nine-span simply supported beam bridge traveled by a train consisting of 8 vehicles as an example, the vertical random vibration responses of the system are investigated.
Firstly, the suitable number of discrete frequencies of rail irregularity is obtained by numerical experimentations.
Secondly, the reliability and efficiency of pseudoexcitation method are verified through comparison with Monte Carlo method.
Thirdly, the random vibration characteristics of train-slab track-bridge interaction system are analyzed by pseudoexcitation method.
Finally, applying the 3σ rule for Gaussian stochastic process, the maximum responses of train-slab track-bridge interaction system with respect to various train speeds are studied.
American Psychological Association (APA)
Zeng, Zhi-ping& Yu, Zhi-wu& Zhao, Yan-gang& Xu, Wen-tao& Chen, Ling-kun& Lou, Ping. 2014. Numerical Simulation of Vertical Random Vibration of Train-Slab Track-Bridge Interaction System by PEM. Shock and Vibration،Vol. 2014, no. 2014, pp.1-21.
https://search.emarefa.net/detail/BIM-1047891
Modern Language Association (MLA)
Zeng, Zhi-ping…[et al.]. Numerical Simulation of Vertical Random Vibration of Train-Slab Track-Bridge Interaction System by PEM. Shock and Vibration No. 2014 (2014), pp.1-21.
https://search.emarefa.net/detail/BIM-1047891
American Medical Association (AMA)
Zeng, Zhi-ping& Yu, Zhi-wu& Zhao, Yan-gang& Xu, Wen-tao& Chen, Ling-kun& Lou, Ping. Numerical Simulation of Vertical Random Vibration of Train-Slab Track-Bridge Interaction System by PEM. Shock and Vibration. 2014. Vol. 2014, no. 2014, pp.1-21.
https://search.emarefa.net/detail/BIM-1047891
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1047891