無錫蠡湖科技大廈表面風(fēng)荷載研究
奚震勇１，耿耀明１，孟春光１，顧明２，黃鵬２
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(1 同濟大學(xué)建筑設(shè)計研究院；2 同濟大學(xué)土木工程防災(zāi)國家重點實驗室，上海 200092)［摘要］無錫蠡湖科技大廈剛性模型的風(fēng)洞試驗測量了模型表面的平均和脈動風(fēng)壓，給出了不同風(fēng)向角下各測點的平均風(fēng)壓系數(shù)和體型系數(shù)。討論了風(fēng)場和風(fēng)向角對平均風(fēng)壓系數(shù)和體型系數(shù)的影響，以及兩個正方形截面塔樓的相互氣動干擾影響特點，得到雙塔高層建筑中各單塔樓的總體體型系數(shù)大于單體建筑的結(jié)論。［關(guān)鍵詞］雙塔高層建筑；風(fēng)洞試驗；風(fēng)壓系數(shù)；體型系數(shù)Research of Wind Load on the Surface of Lihu Technology Building in WuxiXi Zhenyong１,Geng Yaoming１,Meng Chunguang１,Gu Ming２,Huang Peng2(1 Architectural Design ＆ Research Institute of Tongji University,Shanghai 200092,China; 2 State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University，Shanghai 200092,China)Abstract:In the wind tunnel test of the rigid model for Wuxi Lihu Technology Building,the average and fluctuating wind pressure on the model surface are measured. The coefficients of the average wind pressure and the shape coefficient of wind load at each monitoring points under different wind angles and the shape coefficient of wind load at each floor are achieved in the test. The influence of wind field and wind angle on the coefficients of the average wind pressure and shape coefficient,as well as the aerodynamic interaction between two square section towers are discussed. The feasibility of the application of the shape coefficient of wind load on the structure design are analysed. It was concluded that the shape coefficient of the one of double towers is greater than that of the single tower.Keywords:double tower tall building; wind tunnel test; wind pressure coefficient; shape coefficient of wind load參考文獻［1］建筑結(jié)構(gòu)荷載規(guī)范(GB50009—2001)［S］.北京：中國建筑工業(yè)出版社，2002.［2］高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程(JGJ3—2002)［S］.北京：中國建筑工業(yè)出版社.［3］鄭毅敏，程雄濤，等. 大跨度高空弧形連廊模型風(fēng)洞試驗研究［J］. 同濟大學(xué)學(xué)報(自然科學(xué)版),2007(9).［4］張亮亮，潘穎，等. 重慶英利大廈表面風(fēng)荷載研究［J］. 重慶建筑大學(xué)學(xué)報,2005(1).［5］張相庭.工程結(jié)構(gòu)風(fēng)荷載理論和抗風(fēng)計算手冊［M］.上海：同濟大學(xué)出版社，1990.［6］黃本才.結(jié)構(gòu)抗風(fēng)分析原理及應(yīng)用［M］.上海：同濟大學(xué)出版社，2001.［7］顧明,黃鵬，等. 無錫蠡湖科技大廈風(fēng)荷載試驗研究報告［R］. 上海：同濟大學(xué)土木工程防災(zāi)國家重點實驗室,2006.5.［8］黃鵬，全涌，顧明. TJ-2風(fēng)洞大氣邊界層被動模擬方法的研究［J］.同濟大學(xué)學(xué)報(自然科學(xué)版)，1999，27(2).
