【摘要】 针对矩形截面的高层建筑物,对不同高宽比和边长比的9种模型进行风洞实验,通过对大量数据的处理和分析,考察了模型高度、高宽比、边长比对高层建筑物扭转风向风力功率谱(扭矩功率谱)的影响规律,并拟合出了一个以风速、湍流强度、边长比等为参数的高层建筑物扭矩功率谱密度函数的数学表达式,与试验结果吻合较好,证明它是合理有效的.更多还原

【Abstract】 On the basis of processing and analyzing the measured data of fluctuating pressure on rectangular rigid models with various side ratios and aspect ratios in a boundary layer wind tunnel, the effects of models’ height, aspect ratio, side ratio on the power spectra of torsional wind loads are studied. Meanwhile, the formulae of power spectrum densities of torsional wind loads is proposed by curve fitting method.The equations have been verified by the results from the wind tunnel test.更多还原