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虞終軍1，丁潔民1，林禎杉2，趙昕1

（1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院（集團(tuán)）有限公司， 上海 200092； 2 同濟(jì)大學(xué)建筑工程系， 上海200092）

 

［摘要］對(duì)鄭州綠地中央廣場(chǎng)雙塔樓的風(fēng)荷載及風(fēng)振舒適度進(jìn)行了分析和評(píng)估。由于塔樓平面接近方形，且塔樓超高，屬于風(fēng)振敏感性建筑，設(shè)計(jì)中橫風(fēng)向風(fēng)荷載不可忽略。兩塔樓高度接近，且水平位置相距較近，將使得風(fēng)場(chǎng)互相產(chǎn)生干擾，因此宜考慮群體效應(yīng)可能產(chǎn)生的風(fēng)荷載放大。順風(fēng)向與橫風(fēng)向風(fēng)荷載的組合，應(yīng)該考慮二者的相關(guān)性折減后進(jìn)行矢量疊加。綜合考慮群體效應(yīng)與荷載折減后計(jì)算得到的結(jié)構(gòu)基底剪力和基底彎矩與風(fēng)洞試驗(yàn)得到的結(jié)果基本相當(dāng)，可見(jiàn)該方法在超高層結(jié)構(gòu)的風(fēng)荷載計(jì)算方面具有的一定的適用性。風(fēng)振舒適度的研究結(jié)果表明，該建筑的風(fēng)振加速度滿足要求，且根據(jù)現(xiàn)有規(guī)范計(jì)算得到的響應(yīng)略小于風(fēng)洞試驗(yàn)結(jié)果。

［關(guān)鍵詞］綠地中央廣場(chǎng)；風(fēng)荷載；橫風(fēng)向風(fēng)荷載；群體效應(yīng)；風(fēng)振舒適度

中圖分類(lèi)號(hào)：TU973.2+13      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2013)09-0042-05

 

Wind-resistant design on double-tower of Greenland Central Plaza

Yu Zhongjun1, Ding Jiemin1, Lin Zhenshan2, Zhao Xin1

 (1 Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China; 2 Department of Building Engineering, Tongji University, Shanghai 200092, China)

 

Abstract: Wind loads and wind-induced vibration comfort of double-tower tall building in Zhengzhou Greenland Central Plaza were analyzed and estimated. Because the plane of tower is close to square and the tower is super tall, the tower is sensitive to the wind vibration, so the across\|wind load cannot be ignored in the design. Two towers stand closely and almost have the same height, which will interfere the wind field around the towers. Therefore the group effects which may enlarge the wind load should be considered in the structure design. Before vector superposition, the along-wind and across-wind load combination should be reduced considering the correlation between two kinds of loads. Results show that the base shear and overturning moment calculated by this method are almost equal to that obtained by wind tunnel test, which indicates the effectiveness of the method in the calculation of wind loads of super high-rise structure. The research results of wind-induced vibration comfort show that wind-induced vibration acceleration meets the demand of the code and the response calculated according to the code is slightly smaller than that obtained from the wind tunnel test.

Keywords:Greenland Central Plaza; wind load; across\|wind load; group effects; wind-induced vibration comfort

作者簡(jiǎn)介：虞終軍，碩士，高級(jí)工程師，Email：32yzj@tjadri.com。

 

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