Browse > Article
http://dx.doi.org/10.12989/was.2013.16.6.603

Empirical formulations for evaluation of across-wind dynamic loads on rectangular tall buildings  

Ha, Young-Cheol (Department of Architecture, Kumoh National Institute of Technology)
Publication Information
Wind and Structures / v.16, no.6, 2013 , pp. 603-616 More about this Journal
Abstract
This study is aimed at formulating an empirical equation for the across-wind fluctuating moment and spectral density coefficient, which are needed to estimate the across-wind dynamic responses of tall buildings, as a function of the side ratios of buildings. In order to estimate an empirical formula, wind tunnel tests were conducted on aero-elastic models of the rectangular prisms with various aspect and side ratios in turbulent boundary layer flows. In this paper, criteria for the across-wind fluctuating moment and spectral density are briefly discussed and the results are analyzed mainly as a function of the side ratios of the buildings. Finally, empirical formulas for the across-wind fluctuating moment coefficient and spectral density coefficient according to variation of the aspect ratio are proposed.
Keywords
tall building; across-wind load; aspect ratio; side ratio; fluctuating moment; power spectral density;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Architectural Institute of Japan (2004), AIJ Recommendations for Loads on Buildings.
2 Architectural Institute of Korea (2009), Korean Building Code and Commentary.
3 Davenport, A.G. (1962), "The response of slender line-like structures to a gusty wind", Proc. I.C.E., 23(3), 449-472.
4 Nan, G.E., Abio, H. and Xiyuan, Z. (2007), "Evaluation of across-wind dynamic response for rectangular high rise buildings", Eng. Mech., 24(10), 80-86.
5 Nan, G.E., Abio, H. and Xiyuan, Z. (2008), "Evaluation of dynamic response induced by turbulence in across-wind direction on high rise buildings", Chinese J. Appl. Mech., 25(2), 218-223.
6 Ha, Y.C. and Kim, D.W. (2002), "Wind tunnel test study on the effective elevation and plan shapes of super high-rise buildings for resisting wind-induced responses", J. Arch. Inst. Korea, 18(9), 93-100 (in Korean).
7 Ha, Y.C. (2004), "Estimation of the across-wind fluctuating moment and spectral density coefficient of rectangular tall buildings with various side ratios", Proceedings of the 11th Australian Wind engineering Society Workshop, Darwin.
8 Ha, Y.C. and Kim, D.W. (2004), "Characteristics of the across-wind fluctuating force and spectral density of rectangular high-rise buildings with various side ratios", Proceedings of the CTBUH 2004 Seoul Conference, Seoul, Korea.
9 Ha, Y.C., Kim, D.W., Choi, S.G and Kil, Y.S. (2005), "Characteristics of the across-wind force of rectangular tall buildings with various roughness", J. Wind Eng. Inst. Korea, 9(1), 79-85 (in Korean)
10 Kawai, H. (1992), "Vortex induced vibration of tall buildings", J. Wind Eng. Ind. Aerod., 41(1-3), 117-128.   DOI   ScienceOn
11 Kim, Y.M, You, K.P. and Ko, N.H (2008), "Across-wind responses of an aeroelastic tapered tall building", J. Wind Eng. Ind. Aerod., 96(8-9), 1307-1319.   DOI   ScienceOn
12 Marukawa, H., Ohkuma,T. and Momomura, Y. (1992), "Across-wind and torsional acceleration of prismatic high rise buildings", J. Wind Eng. Ind. Aerod., 41-44, 1139-1150.
13 National Building Code of Canada (2005), Part 4 Structural Design.
14 Quan,Y. and Gu, M. (2006) "Analytical method of across-wind response and equivalent static wind loads of high-rise buildings", Eng. Mech., 23(9), 84-88.
15 Liang, S, Liu, S, Li, Q.S, Zhang, L and Gu, M. (2002), "Mathematical model of acrosswind dynamic loads on rectangular tall buildings", J. Wind Eng. Ind. Aerod., 90(12-15), 1757-1770.   DOI   ScienceOn
16 Liang, S, Liu, S, Li, Q.S, Zou, L.H. and Wu, J.R. (2005), "Simplified formulas for evaluation of across-wind dynamic responses of rectangular tall buildings", Wind Struct., 8(3), 197-212.   DOI   ScienceOn
17 Lin, N, Letchford, C, Tamura, Y, Liang, B. and Nakamura, O. (2005), "Characteristics of wind forces acting on tall buildings", J. Wind Eng. Ind. Aerod., 93(3), 217-242.   DOI   ScienceOn
18 Vickery, B.J. (1966), "On the assessment of wind effects on elastic structures", C. E. Trans., Inst. Aust., 183-192.
19 Vickery, B.J. (1972), "Lift or across-wind response of tapered stacks", Proceedings of the ASCE, 98(1), 1-20.
20 Kareem, A. (1989), "Fluctuating wind loads on buildings", J. Eng. Mech.- ASCE, 108(6), 1086-1102.
21 Melbourne, W.H. (1975), "Tall rectangular building response to cross-wind excitation", Proceedings of the 4th International Conference on Wind Effects on Buildings & Structures, London, UK.