Galloping calculation method for prisms with wind attack angle
XIE Lanbo1，LIAO Haili2
1.China Railway Major Bridge Reconnaissance & Design Institute Co.,Ltd.,Wuhan 430050,China;
2.Research Center for Wind Engineering,Southwest Jiaotong University,Chengdu 610036,China
Abstract：The calculation formulas for lateral galloping critical wind speed and amplitude of prisms with wind attack angle were deduced with the quasi-steady theory. H-shaped columns were adopted to conduct wind tunnel tests and calculations. The results showed that the galloping critical wind speed calculation results using the proposed method are very close to those using Den-Hartog formula under smaller wind attack angles; under larger wind attack angles,the difference between the two results is bigger,so Den-Hartog formula can’t be used to do galloping calculation under larger wind attack angles; the results of theoretical calculation for galloping amplitude agree well with those of tests,the correctness of the proposed method is verified.
收稿日期: 2017-03-09
出版日期: 2018-08-28
引用本文:
谢兰博1，廖海黎2. 有风攻角的棱柱体驰振计算方法研究[J]. 振动与冲击, 2018, 37(17): 9-15.
XIE Lanbo1，LIAO Haili2. Galloping calculation method for prisms with wind attack angle. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(17): 9-15.
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