自立式三管鋼煙囪順風(fēng)向風(fēng)振系數(shù)研究
趙春曉，張益國(guó)
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（河北省電力勘測(cè)設(shè)計(jì)研究院， 石家莊 050031）
［摘要］采用風(fēng)洞試驗(yàn)和數(shù)值分析相結(jié)合的方法，根據(jù)隨機(jī)振動(dòng)理論，針對(duì)不同的風(fēng)向角、不同的煙囪間距和橫向支撐剛度，對(duì)自立式三管鋼煙囪的風(fēng)振系數(shù)進(jìn)行研究,揭示了其干擾機(jī)理，得到了研究工況范圍內(nèi)自立式三管鋼煙囪的風(fēng)振系數(shù)取值建議，為該類(lèi)鋼煙囪抗風(fēng)設(shè)計(jì)提供參考。［關(guān)鍵詞］自立式三管鋼煙囪; 風(fēng)振系數(shù); 隨機(jī)振動(dòng)理論; 自振頻率中圖分類(lèi)號(hào)：TU233 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2015)19-0072-04
Study on along wind-induced vibration coefficient of self-support three-pipe steel chimneyZhao Chunxiao, Zhang Yiguo(Hebei Electric Power Design Research Institute, Shijiazhuang 050031, China)Abstract: By combined methods of wind tunnel test and numerical analysis, the study on wind-induced vibration coefficient of self-support three-pipe steel chimney was conducted based on the random vibration theory in view of different wind directions, different steel cylinder spacing and lateral support stiffness. The interference mechanism was revealed, and the suggestions on value selection of the wind-induced vibration coefficient for the chimney under studied working conditions were given, which provided reference for wind resistance design of similar steel chimney.Keywords: self-support three-pipe steel chimney; wind-induced vibration coefficient; random vibration theory; natural vibration frequency
作者簡(jiǎn)介：趙春曉，學(xué)士，教授級(jí)高級(jí)工程師，Email：hbedzcx@sina.com。
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