Failure analysis of fatigue damage for fastening clips in the ballastless track of high-speed railway considering random track irregularities

2021 ◽  
pp. 105897
Author(s):  
Dengke Ma ◽  
Jin Shi ◽  
Ziquan Yan ◽  
Linlin Sun
Keyword(s):  
Failure Analysis ◽  
Fatigue Damage ◽  
High Speed ◽  
High Speed Railway ◽  
Ballastless Track ◽  
Random Track Irregularities ◽  
Track Irregularities

scholarly journals PSD of ballastless track irregularities of high-speed railway

2014 ◽  
Vol 44 (7) ◽  
pp. 687-696 ◽  
Author(s):  
Fei YANG ◽  
WanMing ZHAI ◽  
JianMin GAO ◽  
HongYan LI ◽  
Xiong KANG ◽  
...  
Keyword(s):  
High Speed ◽  
High Speed Railway ◽  
Ballastless Track ◽  
Track Irregularities

scholarly journals Mechanical Performance of a Ballastless Track System for the Railway Bridges of High-Speed Lines: Experimental and Numerical Study under Thermal Loading

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2876
Author(s):  
Yingying Zhang ◽  
Lingyu Zhou ◽  
Akim D. Mahunon ◽  
Guangchao Zhang ◽  
Xiusheng Peng ◽  
...  
Keyword(s):  
High Speed ◽  
Thermal Loading ◽  
Mechanical Performance ◽  
Track Structure ◽  
Box Girder ◽  
High Speed Railway ◽  
Ballastless Track ◽  
Track System ◽  
Girder Bridge ◽  
Track Slab

The mechanical performance of China Railway Track System type II (CRTS II) ballastless track suitable for High-Speed Railway (HSR) bridges is investigated in this project by testing a one-quarter-scaled three-span specimen under thermal loading. Stress analysis was performed both experimentally and numerically, via finite-element modeling in the latter case. The results showed that strains in the track slab, in the cement-emulsified asphalt (CA) mortar and in the track bed, increased nonlinearly with the temperature increase. In the longitudinal direction, the zero-displacement section between the track slab and the track bed was close to the 1/8L section of the beam, while the zero-displacement section between the track slab and the box girder bridge was close to the 3/8L section. The maximum values of the relative vertical displacement between the track bed and the bridge structure occurred in the section at three-quarters of the span. Numerical analysis showed that the lower the temperature, the larger the tensile stresses occurring in the different layers of the track structure, whereas the higher the temperature, the higher the relative displacement between the track system and the box girder bridge. Consequently, quantifying the stresses in the various components of the track structure resulting from sudden temperature drops and evaluating the relative displacements between the rails and the track bed resulting from high-temperature are helpful in the design of ballastless track structures for high-speed railway lines.

Failure analysis and optimization of integral droppers used in high speed railway catenary system

2018 ◽  
Vol 91 ◽  
pp. 496-506 ◽  
Author(s):  
Xi-Yang Liu ◽  
Jin-Fang Peng ◽  
De-Qiang Tan ◽  
Zhi-Biao Xu ◽  
Jian-Hua Liu ◽  
...  
Keyword(s):  
Failure Analysis ◽  
High Speed ◽  
High Speed Railway ◽  
Catenary System
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