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（1 浙江綠城東方建筑設(shè)計(jì)有限公司， 杭州 310012; 2 同濟(jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室， 上海 200092; 3 綠地控股集團(tuán)有限公司， 上海 200023; 4 中國(guó)建筑西南設(shè)計(jì)研究院有限公司， 成都 610041）

［摘要］基于剛性模型表面壓力測(cè)量風(fēng)洞試驗(yàn)，對(duì)一外附網(wǎng)架且外形復(fù)雜的高層建筑立面上典型測(cè)點(diǎn)的最不利風(fēng)壓系數(shù)進(jìn)行研究，分析外附網(wǎng)架和復(fù)雜周邊環(huán)境的影響。試驗(yàn)結(jié)果表明，高層建筑立面上的最不利正風(fēng)壓系數(shù)在風(fēng)向近似正對(duì)測(cè)點(diǎn)時(shí)發(fā)生，最不利負(fù)風(fēng)壓系數(shù)通常在來流風(fēng)向與測(cè)點(diǎn)所在面大致平行時(shí)發(fā)生；外附網(wǎng)架使得建筑繞流的分離點(diǎn)向下游方向移動(dòng)，這種效應(yīng)在大曲率曲面或是邊緣有尖角的面上作用很微弱，而在小曲率曲面上的作用則很顯著；復(fù)雜周邊環(huán)境對(duì)目標(biāo)建筑的遮擋效應(yīng)十分明顯，目標(biāo)建筑在受干擾時(shí)的氣動(dòng)力譜中，分布在高頻區(qū)段的能量高于未受干擾的情況，這可能導(dǎo)致結(jié)構(gòu)風(fēng)振響應(yīng)的共振分量增大。

［關(guān)鍵詞］高層建筑； 風(fēng)洞試驗(yàn)； 復(fù)雜周邊環(huán)境； 外附網(wǎng)架

中圖分類號(hào)：TU973.2+13     文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2015)02-0075-05

Effect research of attached grid on wind load of highrise building facade envelope

Yan Zhiwei1, Quan Yong2, Tu Nankun3, Gu Ming2, Feng Yuan4

 (1 Zhejiang Greentown Oriental Architectural Design Co., Ltd., Hangzhou 310012, China; 2 State Key

Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; 3 Greenland Holding Group Co., Ltd., Shanghai 200023, China; 4 Southwest Architecture Design Co., Ltd., Chengdu 610041, China)

Abstract:Based on the surface pressure measurement wind tunnel test of rigid model, the most unfavorable pressure coefficient of the typical measurement point of the highrise building facade with complex shape and attached grids was studied, and the effects of attached grids and complex surroundings were analyzed. The test results show that the most unfavorable positive wind pressure coefficient in highrise building facade exists when the wind direction approximate faces the measured point, and the most unfavorable negative pressure coefficient usually occurs when the wind direction is parallel to the plane of measuring point. Attached grids make the separation point of round flow of the building move towards the downstream direction, whose effect is very weak in the large curvature surface or in the surface with sharp corners while the effect is very significant in the small curvature surface. Shielding effect of complex surroundings on the target architecture is very obvious. In the aerodynamic spectrum of target interfered architecture, energy distributed in high frequency section is higher than that of the undisturbed architecture, which may cause the resonance component of the wind vibration response of the structure to increase.

Keywords:highrise building; wind tunnel test; complex surrounding; attached grid

*國(guó)家自然科學(xué)基金項(xiàng)目（50878159，90715040）,上海市浦江人才計(jì)劃項(xiàng)目（08PJ1409500）,土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室自主課題(SLDRCE10\|B_03)。

作者簡(jiǎn)介：嚴(yán)志威，碩士，Email：yzw6668502@163.com。

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