Influence of Spacing on Vortex-Induced Vibration Characteristics of Twin Separate Steel Box Girders under Large Wind Attacking Angle
Liu Xiaobing1,2 Zhang Haidong1 Liu Qingkuan1,2
1. Wind Engineering Research Center, Shijiazhuang Tiedao University, Shijiazhuang, 050043,China；
2. Hebei Province Key Lab of Structural Health Monitoring and Control, Shijiazhuang, 050043, China
Abstract：Based on a bridge with twin separate steel box girders, a number of sectional model wind tunnel tests were performed. Firstly, vortex-induced vibration characteristic of single box girder under 7 different wind attacking angles ranging from -5° to +5° was studied. Then vortex-induced vibration characteristics of twin separate box girders in 16 different spacings under wind attacking angle +5° were investigated and compared with that of single box girder. The spacing ratio D/B is from 0.025 to 4.0, where D is net spacing between twin box girder and B is width of single box. The test results show that influence of spacing on vortex-induced vibration characteristics of both windward box girder and leeward box girder can be divided into four regions.
刘小兵1,2 张海东1 刘庆宽1,2. 大攻角下分离双钢箱梁间距对涡振特性的影响[J]. 振动与冲击, 2017, 36(14): 202-207.
Liu Xiaobing1,2 Zhang Haidong1 Liu Qingkuan1,2. Influence of Spacing on Vortex-Induced Vibration Characteristics of Twin Separate Steel Box Girders under Large Wind Attacking Angle. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(14): 202-207.
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