Abstract
Single-level rail-cum-road steel box girder is a relatively new form of bridge superstructure that accommodates railway and highway in the same level. The wind flow pattern over the bridge deck is quite complex and a new issue of aerodynamic interference between vehicles also rise up. This paper conducted an in-depth investigation on the aerodynamic characteristics of vehicles on a single-level rail-cum-road bridge as well as the aerodynamic interference among vehicles. The results reveal that the bridge deck makes the aerodynamic coefficients of vehicles on windward lanes vary a lot with respect to vehicle location and vehicle type, while it also well protects the train and leeward road vehicles from large wind load. Among all the vehicles, the van gets several of the largest aerodynamic coefficients and is considered as a critical vehicle. In terms of the vehicles’ interference, the upstream truck trailer brings significant aerodynamic variation for the overtaking vehicle, but its inadequate shelter effect yields fluctuation in the variation. An upstream truck trailer brings significant rise for the aerodynamic load of the train, larger distance between the train and the truck trailer will bring larger increase on the train’s aerodynamic load.
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Acknowledgments
The writers are grateful for the financial support from the National Natural Science Foundation of China (51778544, 51978589, 51908472) and the Fundamental Research Funds for the Central Universities (2682021CG014).
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He, J., Zhu, J., Xiang, H. et al. Experimental Investigation on Aerodynamic Interference of Vehicles on Single-Level Rail-Cum-Road Bridge under Crosswinds. KSCE J Civ Eng 27, 3355–3369 (2023). https://doi.org/10.1007/s12205-023-1815-0
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DOI: https://doi.org/10.1007/s12205-023-1815-0