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.

Overhead bridge

Aerodynamic loads

Moving model test

Numerical simulation

Författare

Xifeng Liang

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

Central South University

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

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

Central South University

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

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

Jing Yin

State Key Laboratory for Track Technology of High-Speed Railway

Ming Zan Tang

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Xue Liang Li

Joint International Research Laboratory of Key Technology for Rail Traffic Safety

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Sinisa Krajnovic

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Journal of Wind Engineering and Industrial Aerodynamics

0167-6105 (ISSN)

Vol. 202 104208

Ämneskategorier

Teknisk mekanik

Farkostteknik

Strömningsmekanik och akustik

DOI

10.1016/j.jweia.2020.104208

Mer information

Senast uppdaterat

2020-05-28