高层建筑扭转风向动力风荷载数学模型  

Mathematical Model of Torsional Dynamic Wind Loads on Tall Buildings

作　　者：肖天崟[1] 梁波[1] 田村幸雄 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]东京工芸大学建筑学科

出　　处：《华中科技大学学报（城市科学版）》2003年第3期67-70,共4页Journal of Huazhong University of Science and Technology

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.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.

关 键 词：高层建筑物 矩形截面 风荷载 数学模型 风洞实验 功率谱 扭矩 边长比 

分 类 号：TU973.213[建筑科学—结构工程]