A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Development of Sliding Slab Track to Reduce Track–Bridge Interaction
Continuously welded rail (CWR) passing on a railway bridge typically experiences a large amount of additional longitudinal axial forces owing to track–bridge interaction under temperature changes and train vertical and traction/braking load effects. A sliding slab track has been developed to reduce the effect of the interaction through the application of a low-frictional sliding layer between slab track and bridge structure. This paper presents a track-bridge interaction analysis of railway bridge applying the sliding slab track, and compares it with a conventional fixed slab track on bridges. A real-scale test specimen was prepared for an experimental test to determine the frictional coefficient of the sliding layer. A design process for a concrete slab for the sliding track system is proposed, including crack control. By applying the sliding slab track, the use of any other special type of rail fastener or rail expansion joint can be avoided to reduce the track structure interaction. In addition, span length of railway bridge will not be restricted by the interaction effect. It is proved that the application of the sliding slab track can mostly remove the interaction effect for the long span railway bridge.
Development of Sliding Slab Track to Reduce Track–Bridge Interaction
Continuously welded rail (CWR) passing on a railway bridge typically experiences a large amount of additional longitudinal axial forces owing to track–bridge interaction under temperature changes and train vertical and traction/braking load effects. A sliding slab track has been developed to reduce the effect of the interaction through the application of a low-frictional sliding layer between slab track and bridge structure. This paper presents a track-bridge interaction analysis of railway bridge applying the sliding slab track, and compares it with a conventional fixed slab track on bridges. A real-scale test specimen was prepared for an experimental test to determine the frictional coefficient of the sliding layer. A design process for a concrete slab for the sliding track system is proposed, including crack control. By applying the sliding slab track, the use of any other special type of rail fastener or rail expansion joint can be avoided to reduce the track structure interaction. In addition, span length of railway bridge will not be restricted by the interaction effect. It is proved that the application of the sliding slab track can mostly remove the interaction effect for the long span railway bridge.
Development of Sliding Slab Track to Reduce Track–Bridge Interaction
Lee, Kyoung-Chan (author) / Jang, Seung-Yup (author) / Lee, Jungwhee (author)
First International Conference on Rail Transportation 2017 ; 2017 ; Chengdu, Sichuan Province, China
ICRT 2017 ; 189-196
2018-03-13
Conference paper
Electronic Resource
English
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RAIL BRIDGE WITH SLAB TRACK REDUCING RAIL-STRUCTURE INTERACTION
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