The identification of maximum bearing friction is critical to working performance assessment of bridge sliding bearings. The friction-displacement hysteresis model was used for the bearing working performance (BWP) assessment. In this study, the bearing longitudinal displacement (BLD) hysteresis model is established for the sliding bearing system, introducing bearing friction and vehicle longitudinal effect. A novel approach for BWP assessment is presented using alternating vehicle longitudinal excitation. First, bearing friction and vehicle longitudinal effect were introduced to establish the hysteresis model of BLD. Subsequently, the evaluation index and the assessment approach were proposed for BWP assessment using the alternating vehicle longitudinal excitation. Finally, the assessment approach for BWP was applied to a real-world railway bridge. The results show that temperature-displacement relationship model for BWP assessment is unapplicable under significant vehicle longitudinal effects. On the contrary, the BLD induced by alternating vehicle longitudinal excitation can identify the degradation of the BWP when vehicle longitudinal excitation overcomes maximum bearing friction.
Condition Assessment of Railway Bridge Sliding Bearing Using Alternating Vehicle Longitudinal Excitation
KSCE J Civ Eng
KSCE Journal of Civil Engineering ; 26 , 11 ; 4737-4745
2022-11-01
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Europäisches Patentamt | 2020
|Gap bridge structure of railway vehicle, and railway vehicle
Europäisches Patentamt | 2021
|Perspectives on railway axle bearing condition monitoring
SAGE Publications | 2020
|