大攻角下分离双钢箱梁间距对涡振特性的影响

刘小兵1,2 张海东1 刘庆宽1,2

振动与冲击 ›› 2017, Vol. 36 ›› Issue (14) : 202-207.

PDF(1975 KB)
PDF(1975 KB)
振动与冲击 ›› 2017, Vol. 36 ›› Issue (14) : 202-207.
论文

大攻角下分离双钢箱梁间距对涡振特性的影响

  • 刘小兵1,2  张海东1  刘庆宽1,2
作者信息 +

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
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文章历史 +

摘要

以某座分离双钢箱梁桥为背景,开展了一系列的节段模型风洞试验,首先分析了-5°~+5°间7个不同风攻角下单箱梁的涡振特性,然后详细研究了+5°风攻角下分离双箱梁在16个不同间距(双箱梁的净间距D与单箱梁宽B之比D/B的变化范围为0.025~4.0)时的涡振特性,并将结果与单箱梁的结果进行了对比。研究发现,间距对上游箱梁和下游箱梁涡振特性的影响均可大致分为4个区间。

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.

Key words

twin separate box girders / vortex-induced vibration / spacing / large wind attacking angle / wind tunnel test

引用本文

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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[J]. Journal of Vibration and Shock, 2017, 36(14): 202-207

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