抄録
The characteristics of the structural frequency and damping as well as the vibration due to the wind forces of a tower supported steel stack are studied in long period field observations. And also the correlations of the vibration due to the vortex between the field observations and wind tunnel tests using 3-D rocking model are discussed. The results are summarized as follows ; 1) the vibration due to the vortex obtains y/d=0.12 for h=0.33% and y/d=0.006 for h=0.89%, respectively (y is the maximum amplitude at the tower top, d is the duct diameter of the stack, h is the damping ratio), 2) the gust responses due to strong winds are studied by the strain data at the half of the stack height, 3) the correlation of the vibration amplitude with the field observations and the wind tunnel tests based on the Scruton number is discussed.
