Abstract：Steel box girder with large projecting slab applied in Hong Kong-Zhuhai-Macao Bridge (HZMB), is very prone to vortex-induced vibration (VIV) due to its bluff configuration. A series of section models and full aeroelastic bridge models wind tunnel tests were conducted to investigate the effects of aerodynamic measures and additional damping measures for mitigating the VIV of HZMB. The results show that two vertical VIV regions and one torsional VIV region were observed during the wind tunnel tests. According to the VIV amplitude and wind speed range of each case, the particular attention should be paid on the second vertical VIV region for the cable-stayed bridges of navigable span and the first vertical VIV region for the continuous beam bridges of non-navigable span. The VIV performance of the bridges was efficiently improved by installing arc-shaped guide vane on guardrails. In addition, the VIV amplitude were reduced significantly by increasing additional damping, and the VIV phenomenon disappeared when the damping ratio increases to 1.0%, which can be used for the design of the tuned mass damper (TMD) for HZMB. Finally, the consistency of wind tunnel test results between section model and full bridge aeroelastic model was discussed by three-dimensional nonlinear VIV analysis method.
李明水, 孙延国, 廖海黎, 孟凡超, 马存明. 港珠澳大桥大挑臂钢箱梁涡激振动特性及抑振措施[J]. 清华大学学报（自然科学版）, 2020, 60(1): 57-65.
LI Mingshui, SUN Yanguo, LIAO Haili, MENG Fanchao, MA Cunming. Vortex-induced vibration of steel box girder with large projecting slab and its mitigation countermeasures for Hong Kong-Zhuhai-Macao Bridge. Journal of Tsinghua University(Science and Technology), 2020, 60(1): 57-65.
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2020, Vol. 60 
