On the aerodynamic loads when a high speed train passes under an overhead bridge
Artikel i vetenskaplig tidskrift, 2020
The aerodynamic loads on the overhead bridge bottom surface induced by train passage are reported in this paper. Both moving model test and numerical simulation approaches at the 1:20 scale are used. The numerical work is validated through both mesh independence tests and comparison with experimental data. Typical pressure variation curves are plotted and compared with previous studies. The peak pressure values’ dependence on the Reynolds number is considered through four sets of experiments with different train running speeds. The peak pressure coefficient distribution law for the bridge bottom surface is presented. Differences in the pressure distribution in different bridge bottom areas are explained based on more detailed flow field information. The influence of the bridge height on the aerodynamic load magnitude and time interval is presented. Moreover, the application of the CEN Standard to practical engineering issues is discussed.
Aerodynamic loads
Moving model test
Numerical simulation
Overhead bridge
Författare
Xifeng Liang
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
Central South University
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Xiao Bai Li
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
Guang Chen
Central South University
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Bo Sun
Central South University
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Zhe Wang
Zhaoqing University
Xiaohui Xiong
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
Jing Yin
Beijing Engineering Research Center of High-speed Railway Broadband Mobile Communications
Ming Zan Tang
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
Central South University
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Xue Liang Li
Joint International Research Laboratory of Key Technology for Rail Traffic Safety
Central South University
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Sinisa Krajnovic
Chalmers, Mekanik och maritima vetenskaper, Strömningslära
Journal of Wind Engineering and Industrial Aerodynamics
0167-6105 (ISSN)
Vol. 202 104208Ämneskategorier
Teknisk mekanik
Farkostteknik
Strömningsmekanik och akustik
DOI
10.1016/j.jweia.2020.104208