Full-scale measurement based investigation on wind fieldcharacteristics of super tall buildings under strong windgusts
Shen Jianhong 1, 2 ;Li Chunxiang 1
1. Department of Civil Engineering, Shanghai University, Shanghai 2000722. Institute of Civil Engineering, Qingdao Technological University, Qingdao 266520
Abstract： Based on basic principle of the wind pressure testing, a new type of wind pressure sensor has been devised in this paper in order to obtain the wind field characteristics of super tall buildings under strong wind gusts. An implementation scheme of full-scale measurement wind field on a super tall building is proposed. The wind velocity and directions on the top of the tall building are captured and moreover, the wind pressure time histories at six locations selected on the wall are recorded. Subsequently,the wind velocity and pressure data measured synchronously are analyzed so as to gain an insight into the characters of wind velocity, directions, and wind pressure. The results show that the wind velocity fluctuations may be not consistent with the typical velocity spectra. Likewise, the probability density functions (PDF) also may be not in obedience to the Gaussian distribution under the special terrain conditions. In this case, the wind pressure on the wall, especially in separated regions, also experience non-Gaussian characters to different degree. The spatial correlation of the wind pressure fluctuations is in agreement with that obtained from wind tunnel tests.
2010, Vol. 29 
