Effect of Uneven Piers Settlement on Dynamic Responses of Train-Longitudinal Connected Slab Track-Bridge System
A three-dimensional finite element coupled dynamic model of high speed train-longitudinal connected slab track-bridge, which takes the nonlinear contact among different components of slab track-bridge system into account and is based on train-track coupled dynamic theory, was established, and corresponding program was developed and verified. With the established dynamic model, and taking high-speed train passing longitudinal connected slab track on bridge under different uneven piers settlement as examples, dynamic characteristics of high-speed train-longitudinal connected slab track-bridge coupled system were theoretically studied. The results are as follows: (1) uneven piers settlement has a great effect on vibration characteristics of longitudinal connected slab track and high-speed train, but a relatively small effect on vibration characteristics of bridge; (2) uneven piers settlement has some effect on dynamic stress of components of slab track and wheel-rail force, but the effect is different for different components: the effect is relatively small for maximum wheel-rail force and maximum pressure force of fastener, however, it has a large effect on positive moment of rail, maximum tensile force of fastener, maximum longitudinal tensile stress of slab and maximum pressure stress of CA mortar; (3) with the increase of uneven piers settlement, the dynamic characteristics of train-longitudinal connected slab track-bridge coupled system also increase, however, it is not a linear monotonic increase, but has some connection with the local void among different components of slab track-bridge system, which is caused by uneven piers settlement.
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Availability:
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Supplemental Notes:
- © 2018 American Society of Civil Engineers.
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Duan, Jun
- Xu, Qingyuan
- Lou, Ping
- Xiao, Zucai
- Zhang, Ze
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Conference:
- First International Conference on Rail Transportation 2017
- Location: Chengdu Sichuan Provence, China
- Date: 2017-7-10 to 2017-7-12
- Publication Date: 2018
Language
- English
Media Info
- Media Type: Web
- Pagination: pp 809-818
- Monograph Title: ICRT 2017: Railway Development, Operations, and Maintenance
Subject/Index Terms
- TRT Terms: Bridge piers; Concrete slab track; High speed rail; Railroad bridges; Settlement (Structures); Stresses; Vibration
- Subject Areas: Bridges and other structures; Design; Railroads;
Filing Info
- Accession Number: 01868920
- Record Type: Publication
- ISBN: 9780784481257
- Files: TRIS, ASCE
- Created Date: Dec 28 2022 5:09PM