- 摘 要
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(廣東省建筑科學研究院集團股份有限公司， 廣州 510500)
［摘要］層疊式高層建筑由于體型不規(guī)則，且承受三維風荷載作用，其在強風作用下的風致振動效應區(qū)別于一般超高層建筑。結合某大型盒式單元構成的超高層建筑，在進行了剛性同步測壓風洞試驗的基礎上，分別對大樓結構的水平、垂直風致振動效應進行了計算和分析，并詳細分析了關鍵風向下結構的等效靜風荷載。結果表明：對層疊式不規(guī)則結構應綜合考慮平動和扭轉效應；在結構水平向風效應較大的風向下，平均分量貢獻占主導，結構橫風振動效應不突出；結構層疊處的大懸挑結構豎向振動效果不明顯，可按剛體的陣風效應進行風荷載取值。
［關鍵詞］層疊式高層建筑；風洞試驗；有限元分析；等效靜風荷載
中圖分類號：TU398-7 文獻標識碼：A文章編號：1002-848X(2021)13-0065-05
Experimental study on multi-dimensional wind-induced vibration of laminated high-rise building
XU Wei
(Guangdong Provincial Academy of Building Research Group Co., Ltd., Guangzhou 510500， China)
Abstract: The wind-induced vibration effects of laminated super high-rise buildings are more complex than those of the common super high-rise buildings under actions of strong winds, because of their irregular shapes and three-dimensional wind load action. The horizontal and vertical wind-induced vibration effects of a super high-rise building with large box-typed units were calculated and analyzed respectively on the basis of the wind tunnel test of rigid syn-step pressure, and the equivalent static wind load of the structure under the key wind direction was analyzed in detail. The results show that the translational and torsional effects should be considered comprehensively for the laminated irregular structures. Under the wind direction with large horizontal wind-induced effect, the contribution of mean component is dominant, and the cross wind vibration effect is not prominent. The vertical dynamic effect of the large cantilever structure near the laminated location is not obvious, so the wind load can be calculated according to the gust effect of the rigid body.
Keywords:laminated high-rise building； wind tunnel test； finite element analysis； equivalent static wind load
作者簡介：許偉，博士，高級工程師，Email：xwwind07@163.com。
