【摘要】 以某封闭流线型钢箱梁斜拉桥为工程背景,通过节段模型风洞试验进行了多孔扰流板各参数如宽度、透风率、孔径对其涡振减振效果影响规律的研究。结果表明:多孔板平行于主梁两侧斜腹板,当各参数取值合适时,可有效地减小模型在+3度风攻角下的扭转涡振。更多还原

【Abstract】 Taking a cable-stayed bridge with a closed streamlined box deck as an engineering background,the influence law of parametersof multi-orifice flow-disturbing plates(MOFDP) such as width,ventilation rate and hole diameter on mitigation effect of MOFDP on vortex-induced resonance(VIR) was investigated through a series of wind tunnel tests of sectional model.The test results showed that MOFDPs,paralleling to and beneath the oblique web of the box deck,can mitigate the torsional VIR of the model effectively at wind attack angle of + 3°when the value of parameters is appropriate.更多还原