Journal
JOURNAL OF VIBRATION AND CONTROL
Volume 27, Issue 9-10, Pages 1051-1062Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1077546320936899
Keywords
Additional bridge deformation; high-speed railway; mapping relationship; safety threshold; train-track-bridge coupled model
Categories
Funding
- National Natural Science Foundation of China [51878563]
- Sichuan Science and Technology Program [2018JY0294, 2018JY0549]
- Ministry of Science and Technology of China [KY201801005]
Ask authors/readers for more resources
This study proposes a new method to map the relationship between dynamic responses of high-speed trains and additional bridge deformations by establishing a train-track-bridge coupled model. It provides engineers with a convenient method for evaluating and maintaining high-speed railway bridges.
Deformations of high-speed railways accumulate over time and affect the geometry of the track, thus affecting the running safety of trains. This article proposes a new method to map the relationship between dynamic responses of high-speed trains and additional bridge deformations. A train-track-bridge coupled model is established to determine relationship between the dynamic responses (e.g. accelerations and wheel-rail forces) of the high-speed trains and the track deformations caused by bridge pier settlement, girder end rotation, and girder camber. The dynamic responses are correlated with the track deformation. The mapping relationship between bridge deformations and running safety of trains is determined. To satisfy the requirements of safety and riding comfort, the suggested upper thresholds of pier settlement, girder end rotation, and girder camber are 22.6 mm, 0.92 parts per thousand rad, and 17.2 mm, respectively. This study provides a method that is convenient for engineers in evaluation and maintenance of high-speed railway bridges.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available