Numerical Analysis of Vibration Responses in High-Speed Railways considering Mud Pumping Defect
Joint Authors
Su, Qian
Li, Ting
Shao, Kang
Liu, Jie
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-07
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
As a newly appeared defect under slab tracks in high-speed railways, mud pumping weakens the support ability of the subgrade to slab track, bringing about deviations on the vibration responses of the vehicle, slab track, and subgrade.
Therefore, this paper proposes a vehicle-slab track-subgrade coupled model based on the multibody simulation principle and the finite element theory to highlight the influences of mud pumping defect.
As an external excitation to this model, random track irregularity is considered.
In order to simulate the mud pumping defect, the contact between the concrete base and subgrade is described as a spring-damper system.
This model is validated by field test results and other simulation results, and a very good agreement is found.
The vibration responses of the vehicle, slab track, and subgrade under different mud pumping lengths and train speeds are studied firstly.
The deviations of vibration responses in high-speed railways induced by mud pumping are then obtained, and the limited mud pumping length is put forward finally to provide a recommendation for maintenance works of high-speed railways in practice.
American Psychological Association (APA)
Li, Ting& Su, Qian& Shao, Kang& Liu, Jie. 2019. Numerical Analysis of Vibration Responses in High-Speed Railways considering Mud Pumping Defect. Shock and Vibration،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211739
Modern Language Association (MLA)
Li, Ting…[et al.]. Numerical Analysis of Vibration Responses in High-Speed Railways considering Mud Pumping Defect. Shock and Vibration No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1211739
American Medical Association (AMA)
Li, Ting& Su, Qian& Shao, Kang& Liu, Jie. Numerical Analysis of Vibration Responses in High-Speed Railways considering Mud Pumping Defect. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1211739
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211739