Analysis of Influencing Factors of Track Static Geometric Deviation of Super-Long-Span HSR Bridge
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Bibliographic Details
| Author(s): |
Mangmang Gao
(China Academy of Railway Sciences Corporation Limited, Beijing, China)
Jingjing Yang (China Academy of Railway Sciences Corporation Limited, Beijing, China) Guolong Li (China Academy of Railway Sciences Corporation Limited, Beijing, China) Xianfu Sun (China Academy of Railway Sciences Corporation Limited, Beijing, China) Yunlu Wang (China Academy of Railway Sciences Corporation Limited, Beijing, China) Dongfang Wang (Tongji University, Shanghai, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 1693-1699 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/nanjing.2022.1693 | ||||
| Abstract: |
Aiming at deformation characteristics of super-span bridge and track in high-speed railway at the acceptance stage, the key factors to track static geometrics are identified, namely the route profile, surrounding temperature, construction deviation and ballast density deviation. According to the study results, the principles of track profile setting is proposed, and the integrated criteria of midpoint chords based on 60 m, 30 m and 10 m is recommended to determine the track target geometric profile. The optimized track adjustment scheme should meet two conditions, first condition is that the irregularity midpoint chord values should not exceed 6 mm/60 m, 3 mm/30 m and 1 mm/10 m, and second condition is that the adjustment range of ballast thickness should be within ( -20 mm~+100 mm). |
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| Keywords: |
high-speed railway long-span bridge deviation of track static geometrics temperature-induced deformation engineering deviation
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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