作　　者： ; ; ; (汤怀强）;

机构地区： 武汉大学土木建筑工程学院

出　　处： 《武汉理工大学学报》 2014年第3期88-93,共6页

摘　　要： 超高层建筑风压特性的风洞试验研究已经取得了丰富成果,风场特性的实测研究也常有报道,但将二者结合起来(即进行风压实测)的相关成果却相对匮乏,尤其是内陆良态风作用下的超高层建筑风压实测则更为少有。为此,在武汉国际证券大厦表面风压风洞试验的基础上进行了建筑表面风压的现场实测,并对其进行了对比分析。结果表明,超高层建筑表面平均风压系数风洞试验结果和实测结果变化规律基本一致,尤其是迎风面平均风压系数风洞试验结果和实测结果吻合较好,均方根风压系数的实测结果比风洞试验结果明显偏大,且部分实测测点均方根风压系数的波动较大,风洞风速谱较实测风速谱的能量分布偏向于高频段,风洞风压谱较实测风压谱能量分布范围更宽,且高频段能量占优。 Researches combining wind tunnel test and field measurement, namely field measurement of wind pressure, especially for field measurement of wind pressure in inland normal climate, are rarely reported. So we carried out field measurement and wind tunnel test for wind pressure on the surfaces of Wuhan international stock building in this paper, in which the mean wind pressure coefficients and its distribution were discussed. The experimental results demonstrate that the distribution of the mean wind pressure coefficients revealed by the wind tunnel test approximately agrees with that by field measurement, especially the mean wind pressure coefficients on the windward side, while the RMS wind pres- sure coefficients of the wind tunnel test are smaller than those of field measurement seriously,and the RMS wind pressure coefficients of some test points by field measurement fluctuate greatly. The wind speed spectrum of in situ is relatively consistent with the yon Karman spectrum. Compared to in-situ wind speed spectrum,the energy distribution of the tunnel spectrum tends towards the high frequency section,displaying a wider distribution with more dominant energy in the high frequency section.

关 键 词： 超高层建筑 现场实测 风洞试验 风压系数 良态风

领　　域： [建筑科学] [航空宇航科学与技术] [航空宇航科学技术]