- 摘 要
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涂楠坤1,2，全涌1，顧明1，嚴志威1
（1 同濟大學土木工程防災國家重點實驗室， 上海 200092； 2 綠地控股集團有限公司， 上海 200023）
［摘要］基于剛性模型的表面風壓測量風洞試驗，對一外附網(wǎng)架的超高層建筑的局部風壓分布特性進行了分析，詳細討論了復雜周邊環(huán)境和外附網(wǎng)架對近似橢圓形截面超高層建筑表面風壓系數(shù)的影響。研究結(jié)果表明，外附網(wǎng)架會顯著削弱迎風面和側(cè)面上的風壓系數(shù)均方根值以及側(cè)面上的風壓系數(shù)均值，但對迎風面上的風壓系數(shù)均值影響不大；復雜周邊環(huán)境會使建筑受遮擋區(qū)域表面的風壓系數(shù)正極值明顯降低，而從上游施擾建筑脫落的尾流有可能會增大目標建筑側(cè)面的負風壓系數(shù)極值。
［關(guān)鍵詞］高層建筑; 復雜周邊環(huán)境; 外附網(wǎng)架; 風壓
中圖分類號： TU973.2+13 文獻標識碼： A 文章編號： 1002-848X(2015)S2-0482-08
Analysis on wind pressures of a high-rise building with attached grid in complex environment
Tu Nankun1,2， Quan Yong1， Gu Ming1， Yan Zhiwei1
(1 State Key Laboratory for Disaster Reduction In Civil Engineering, Tongji University, Shanghai 200092, China；
2 Greenland Holding Group Co., Ltd., Shanghai 200023, China)
Abstract: With wind pressure measurement technique, the rigid model of an actual super-tall building with attached grid was tested to obtain local wind pressure distribution characteristics and aerodynamic interference effect of complex surroundings and attached grid on wind pressures of principle building with approximate ellipse cross section.The results indicate that the attached grids can obviously decrease most unfavorable negative coefficients of wind pressure, mean and RMS coefficients of local wind pressures on windward surfaces, but it faintly affects most unfavorable positive coefficients, mean and RMS coefficients of local wind pressures on side faces. Complex surroundings would significantly reduce the most unfavorable positive coefficient of the sheltering area of principle building, and the vortex shedding upstream intends to increase the absolute value of most unfavorable negative coefficients on side faces.
Keywords: high-rise building; the complex surrounding; attached grids; wind pressure
作者簡介：涂楠坤，碩士，Email:243569261@qq.com。
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