台风“鲇鱼”作用下厦门沿海某超高层建筑风压特性的风洞试验与现场实测对比研究

A comparative study of wind tunnel test and field measurements of wind pressure characteristics of super-tall building on coast of the Xiamen City during passage of typhoon Megi

为研究超高层建筑表面的风压特性,基于对厦门沿海某超高层建筑表面风压开展的现场实测和风洞模型试验,探讨了台风"鲇鱼"作用下超高层建筑表面的风压特性及其分布规律。研究结果表明:通过风洞试验和现场实测所揭示出的超高层建筑表面风压特性(平均风压系数、峰值风压系数)及其随风向角的变化规律基本一致;平均风压系数的现场实测与风洞试验结果在迎风面吻合较好,而背风面现场实测值明显较风洞试验结果小;峰值风压系数的现场实测与风洞试验结果除个别测点外相差较大。

Based on the field measurement and wind tunnel test for wind pressure on the surface of a super-tall building on the coast of Xiamen city, this paper discussed the wind pressure characteristics and its distribution on super-tall building during the passage of typhoon Megi. The results clearly demonstrate that the wind pressure characteristics （mean wind pressure coefficient and extreme wind pressure coefficient） and its distribution on super-tall building revealed by wind tunnel test are roughly agree with the field measurement. The mean wind pressure coefficient results of field measurement fit with wind tunnel test very well on the windward side, while the value of field measurement is smaller than wind tunnel test on the leeward side obviously. There is a relative large difference in extreme wind pressure coefficient results between wind tunnel test and the field measurement except for some single test point.