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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.78 No.2
- 발행연도
- 2021.1
- 수록면
- 163 - 174 (12page)
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초록· 키워드
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Track-bridge interaction has become an essential part in the design of bridges and rails in terms of modern railways. As a unique ballastless slab track, the longitudinal continuous slab track (LCST) or referred to as the China railway track system Type-II (CRTS II) slab track, demonstrates a complex force mechanism. Therefore, a comprehensive track-bridge interaction study between multi-span simply supported beam bridges and the LCST is presented in this work. In specific, we have developed an integrated finite element model to investigate the overall interaction effects of the LCST-bridge system subjected to the actions of temperature changes, traffic loads, and braking forces. In that place, the deformation patterns of the track and bridge, and the distributions of longitudinal forces and the interfacial shear stress are studied. Our results show that the additional rail stress has been reduced under various loads and the rail’s deformation has become much smoother after the transition of the two continuous structural layers of the LCST. However, the influence of the temperature difference of bridges is significant and cannot be ignored as this action can bend the bridge like the traffic load. The uniform temperature change causes the tensile stress of the concrete track structure and further induce cracks in them. Additionally, the influences of the friction coefficient of the sliding layer and the interfacial bond characteristics on the LCST’s performance are discussed. The systematic study presented in this work may have some potential impacts on the understanding of the overall mechanical behavior of the LCSTbridge system.
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참고문헌 (36)
참고문헌 신청
ANSYS Inc. / 2013 / ANSYS Mechanical APDL Structural Analysis Guide / 275 Technology Drive Canonsburg
Chen, Z. / 2018 / Effects of initial up-warp deformation on the stability of the CRTS II slab track at high temperatures / J. Zhejiang Univ. -Sci. A 19(12):939~950
China Academy of Railway Sciences / 2008 / Summary of Design Principles and Methods for CRTS II Ballastless Track of Beijing-Tianjin Intercity Railway
China State Railway Group / 2013 / Code for Design of Railway Continuous Welded Rail, TB10015-2012 / China Railway Publishing House
Gonglian Dai / 2017 / Interaction analysis of Continuous Slab Track (CST) on long-span continuous high-speed rail bridges / Structural Engineering and Mechanics, An Int＇l Journal 63(6):713~723
Chen, Z. / 2018 / Effects of initial up-warp deformation on the stability of the CRTS II slab track at high temperatures / J. Zhejiang Univ. -Sci. A 19(12):939~950
China Academy of Railway Sciences / 2008 / Summary of Design Principles and Methods for CRTS II Ballastless Track of Beijing-Tianjin Intercity Railway
China State Railway Group / 2013 / Code for Design of Railway Continuous Welded Rail, TB10015-2012 / China Railway Publishing House
Gonglian Dai / 2017 / Interaction analysis of Continuous Slab Track (CST) on long-span continuous high-speed rail bridges / Structural Engineering and Mechanics, An Int＇l Journal 63(6):713~723
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