| Title |
Simplified Formulas for Estimating the Across-wind Induced Responseof Rectangular Tall Buildings |
| Authors |
Ha Young-Cheol ; Kil Yong-Sik ; Hwang Sung-Kwon ; Kim Dong-Woo |
| Keywords |
Tall Building ; Across-wind Induced Response ; Side Ratios ; Wind Tunnel Test ; Power Spectral Density |
| Abstract |
This study aims at proposing empirical equations of the across-wind induced response of rectangular tall buildings. In order to estimate empirical formula, wind tunnel tests have been conducted on aero-elastic model of rectangular prisms with various roughness of surface, breadth-to-depth, various terrain categories and side ratios in turbulent boundary layer flows. In this paper, criteria of across-wind induced response is briefly discussed and then these results were mainly analyzed as a function of the side ratios of buildings. Finally, approximate equation for the across-wind induced response(displacement, acceleration and wind load) were proposed as the function of fluctuating overturning moment coefficient and wind force spectral coefficient. Comparison of the across-wind responses determined by the proposed formulas and the results estimated by wind loading code of AIJ-2004 are made to examine the accuracy of the proposed simplified formulas. It is shown from the comparisons that the proposed simplified formulas can be served as an useful tool for the design and analysis of across-wind effects on rectangular tall buildings. |