局部外形特征对高层建筑立面上围护结构风荷载的影响

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振动与冲击 ›› 2009, Vol. 28 ›› Issue (12) : 132-135.

论文

局部外形特征对高层建筑立面上围护结构风荷载的影响

全涌;严志威;顾明;李达明

作者信息 +

Study on the effects of local shape characteristics to wind loadson the facades of high-rise buildings

Quan Yong;Yan Zhiwei;Gu Ming;Li Mingda

Author information +

文章历史 +

摘要

基于一外形复杂的高层建筑刚性模型表面压力测量风洞试验，对高层建筑立面上测点的最不利风压系数进行了研究，分析了局部外形特征对高层建筑立面上围护结构风荷载的影响。试验结果表明，最不利正风压系数不受建筑立面局部外形特征的影响，可以基于来流湍流特征用准定常理论近似预测。最不利负风压系数与尾流分离有关，受建筑局部外形特征的影响较大，平直立面上的小，弧形立面上的大。这些结论为高层建筑围护结构的设计提供了参考。

Abstract

Based on the pressure measurement wind tunnel test results of the rigid model of a real high-rise buildingwith a complex shape, the most unfavorable pressure coefficients on measured taps are analyzed and the effects of the shape of the local facades on the most unfavorable pressure coefficients are studied. The results show that the most unfavorable positivepressure coefficients are not affected by the shape of the local facades and can be approximately estimated with the quasi-steadymethod. The most unfavorable negative pressure coefficients differ seriously as the local shape of the facades changes and thoseon a flat facade are small while large on a curve facade. These conclusions provide basis for the cladding design of high-rise
buildings.

导出引用

全涌;严志威;顾明;李达明. 局部外形特征对高层建筑立面上围护结构风荷载的影响[J]. 振动与冲击, 2009, 28(12): 132-135

Quan Yong;Yan Zhiwei;Gu Ming;Li Mingda. Study on the effects of local shape characteristics to wind loadson the facades of high-rise buildings[J]. Journal of Vibration and Shock, 2009, 28(12): 132-135