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(廣東省建筑科學(xué)研究院集團(tuán)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(fēng)荷載作用，其在強(qiáng)風(fēng)作用下的風(fēng)致振動(dòng)效應(yīng)區(qū)別于一般超高層建筑。結(jié)合某大型盒式單元構(gòu)成的超高層建筑，在進(jìn)行了剛性同步測(cè)壓風(fēng)洞試驗(yàn)的基礎(chǔ)上，分別對(duì)大樓結(jié)構(gòu)的水平、垂直風(fēng)致振動(dòng)效應(yīng)進(jìn)行了計(jì)算和分析，并詳細(xì)分析了關(guān)鍵風(fēng)向下結(jié)構(gòu)的等效靜風(fēng)荷載。結(jié)果表明：對(duì)層疊式不規(guī)則結(jié)構(gòu)應(yīng)綜合考慮平動(dòng)和扭轉(zhuǎn)效應(yīng)；在結(jié)構(gòu)水平向風(fēng)效應(yīng)較大的風(fēng)向下，平均分量貢獻(xiàn)占主導(dǎo)，結(jié)構(gòu)橫風(fēng)振動(dòng)效應(yīng)不突出；結(jié)構(gòu)層疊處的大懸挑結(jié)構(gòu)豎向振動(dòng)效果不明顯，可按剛體的陣風(fēng)效應(yīng)進(jìn)行風(fēng)荷載取值。 

［關(guān)鍵詞］層疊式高層建筑；風(fēng)洞試驗(yàn)；有限元分析；等效靜風(fēng)荷載 

中圖分類號(hào)：TU398-7 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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(jí)工程師，Email：xwwind07@163.com。