神戸商工貿易センタービルの周辺気流の特性について

Abstract

Tall buildings often bring severe wind problems to pedestrians and other structures atthe base of the buildings. The characteristics of those severe winds must be known, andone of the effective methods to estimate them is a wind tunnel test. However, the resultsof wind tunnel test may not be different from the real flow around full-scale buildings indetail, and full-scale measurement is necessary to solve this problem. We had performed anobservation of wind flow at the base of the Kobe Shoko Boeki Center Building by install-ing six 3-cup anemometers and five Gill type anemometers, and the observed results aredescribed in this paper. The ratio between the wind speed at the ground level and thereference wind speed at the top of the building was not constant and seems to depend onthe reference wind speed. The wind speed between two buildings is accelerated and theaccelerated wind speed did not decrease rapidly. The gust factor of the wind speed aver-aged for 1 or 3 seconds is 1. 5. Power spectra and intensities ot fhe wind were also calculated.