Abstract

Aerodynamic damping often plays an important role in estimations of wind induced dynamic responses of super high-rise buildings. Across- and along-wind aerodynamic damping ratios of a square super high-rise building with a height of 300 m are identified with the Random Decrement technique (RDT) from random vibration responses of the SDOF aeroelastic model in simulated wind fields. Parametric studies on effects of reduced wind velocity, terrain type and structural damping ratio on the aerodynamic damping ratios are further performed. Finally formulas of across- and along-wind aerodynamic damping ratios of the square super high-rise building are derived with curve fitting technique and accuracy of the formulas is verified.

주제어

#super high-rise building   #aerodynamic damping   #wind induced response   #aeroelastic model wind tunnel test  

저자의 다른 논문

참고문헌 (15)

1. Nishimura, H. and Taniike, Y. (1995), "Unsteady wind force on a square prism in a turbulent boundary layer", 9ICWE, New Delhi, India, 195-203. 
2. Steckley, A. (1989), "Motion-induced wind forces on chimneys and tall buildings", Ph.D. Thesis, University of Western Ontario. 
3. Tamura, Y. and Suganuma, S.Y. (1996), "Evaluation of amplitude-dependent damping and natural frequency for buildings during strong winds", J. Wind Eng. Ind. Aerodyn., 59, 115-130. 
4. Tamura, Y., Suda, K. and Sasaki, A. (2000), "Damping in buildings for wind resistant design", International Symposium on Wind and Structures for the 21st Century 26-28 January, Cheju, Korea, 115-129. 
5. Watanabe, Y., Isyumov, N. and Davenport, A.G. (1997), "Empirical aerodynamic damping function for tall building", J. Wind Eng. Ind. Aerodyn., 72, 313-321. 
6. Yong, Q. (2002), "The across-wind loads and responses of super high-rise buildings", Ph.D. thesis, Tongji University, Shanghai, China (in Chinese). 
7. Yong, Q. and Ming, G. (2002), "The across-wind aerodynamic force spectra of super high-rise buildings", Journal of Tongji University, 30(5), 627-632 (in Chinese). 
8. Kareem, A. (1978), "Wind excited motion of buildings", Ph. D. Thesis, Colorado State University at Fort Collin, Colorad. 
9. Kareem, A. and Gurley, K. (1996), "Damping in structures: its evaluation and treatment of uncertainty", J. Wind Eng. Ind. Aerodyn., 59, 131-157. 
10. Marukawa, H., Kato, N., Fujii, K. and Tamura, Y. (1996), "Experimental evaluation of aerodynamic damping of tall buildings", J. Wind Eng. Ind. Aerodyn., 59, 177-190. 
11. Ming, G. and Yong, Q. (2004), "Across-wind aerodynamic force of typical tall buildings", J. Wind Eng. Ind. Aerodyn., 92, Issue 13, 1147-1165. 
12. Glanville, M.J., Kwok, K.C.S. and Denoon, R.O. (1996), "Full-scale measurements of structures in Australia", J. Wind Eng. Ind. Aerodyn., 59, 349-364. 
13. Huang, P. (1997), "Simulation of the wind fields of the atmospheric boundary layer and the peak factors of fluctuating pressure of high-rise buildings", Thesis for the degree of Master, Tongji University, Shanghai, China. 
14. Jeary, A.P. (1996), "The description and measurement of nonlinear damping in structures", J. Wind Eng. Ind. Aerodyn., 59, 103-114. 
15. Chinese Code for Loading on Buildings and other Structures, GB50009-2001, 2001 (in Chinese). 

이 논문을 인용한 문헌 (1)

1. 2011. "" Wind & structures, 14(5): 413~434  상세보기