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http://dx.doi.org/10.12989/was.2014.18.3.295

Power spectra of wind forces on a high-rise building with section varying along height  

Huang, D.M. (School of Civil Engineering, Central South University)
Zhu, L.D. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
Chen, W. (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University)
Publication Information
Wind and Structures / v.18, no.3, 2014 , pp. 295-320 More about this Journal
Abstract
The characteristics of amplitudes and power spectra of X axial, Y axial, and RZ axial (i.e., body axis) wind forces on a 492 m high-rise building with a section varying along height in typical wind directions are studied via a rigid model wind tunnel test of pressure measurement. Then the corresponding mathematical expressions of power spectra of X axial (across-wind), Y axial (along-wind) and torsional wind forces in $315^{\circ}$ wind directions are proposed. The investigation shows that the mathematical expressions of wind force spectra of the main structure in across-wind and torsional directions can be constructed by the superimposition of an modified wind spectrum function and a peak function caused by turbulent flow and vortex shedding, respectively. While that in along-wind direction can only be constructed by the former and is similar to wind spectrum. Moreover, the fitted parameters of the wind load spectra of each measurement level of altitude are summarized, and the unified parametric results are obtained. The comparisons of the first three order generalized force spectra show that the proposed mathematical expressions accord with the experimental results well.
Keywords
high-rise building; rigid model wind tunnel test of pressure measurement; wind force spectrum; mathematical expressions; parameters fitting;
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  • Reference
1 Architectural Institute of Japan (1996), AIJ Recommendations for Loads on Buildings.
2 Cheng, C.M. and Kareem, A. (1992), "Acrosswind response of reinforced concrete chimneys" J. Wind Eng. Ind. Aerod., 43, 2141-2152   DOI   ScienceOn
3 Davenport, A.G. (1961), "The application of statistical concepts to the wind loading of structures", Proc. Inst. Civ. Eng. London, 19, 449-472.
4 Davenport, A.G. (1967), "Gust loading factors", J. Struct. Div. ASCE, 93, 11-34.
5 Gu, M. and Quan, Y. (2004), "Across-wind loads of typical tall buildings", J. Wind Eng. Ind. Aerod., 92(13), 1147-1165.   DOI   ScienceOn
6 Holmes, J.D. and Lewis, R.E. (1987), "Optimization of dynamics-pressure-measurement systems I, & II", J. Wind Eng. Ind. Aerod., 25, 249-290.   DOI   ScienceOn
7 Kareem, A. (1982a), "Acrosswind response of buildings", J. Struct. Eng. - ASCE, 108(4), 869-887.
8 Irwin, H.P.A.H., Cooper, K.R. and Girard, R. (1979), "Correction of distortion effects caused by tubing systems in measurements of fluctuating pressures", J. Wind Eng. Ind. Aerod., 5(1-2), 93-107.   DOI
9 Islam M.S., Ellingwood, and Corotis R.B. (1992), "Wind-Induced response of structurally asymmetric high-rise buildings", J. Struct. Eng.- ASCE, 118(1), 207-222.   DOI
10 Kareem, A. (1982b), "Fluctuating wind loads on buildings", J. Eng. Mech. - ASCE, 108(6), 1086-1102.
11 Kareem, A. (1992), "Dynamic response of high-rise buildings to stochastic wind loads", J. Wind Eng. Ind. Aerod., 42(1-3),1101-1115.   DOI   ScienceOn
12 Kwok, K.C.S. (1982), "Cross-wind response of tall buildings", Eng. Struct., 4(10), 256-262.   DOI   ScienceOn
13 Kwok, K.C.S. (1995), "Aerodynamics of tall buildings", Proceedings of the State of the art volume.9 ICWE, New Delhi, India.
14 Liang, S.G., Liu, S.C., Li, Q.S., Zhang, L.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
15 Liang, S.G., Li, Q.S., Liu, S.C., Zhang, L.L. and Gu, M. (2004), "Torsional dynamic wind loads on rectangular tall buildings", Eng. Struct., 26(1), 129-137.   DOI   ScienceOn
16 Simiu, E. and Scanlan, R. (1986), Wind effects on structures: an introduction to wind engineering, New York, Wiley Press.
17 Marukawa, H., Ohkuma, T. and Momomura, Y. (1992), "Acrosswind and torsional acceleration of prismatic high rise buildings", J. Wind Eng. Ind. Aerod., 42(1-3), 1139-1150.   DOI   ScienceOn
18 Yeh, H. and Wakahara, T. (1992),"Wind-induced forces on a slender rectangular-column structure", Proceedings of the 2EACWE, Genova, Italy.
19 Ministry of Construction P.R. China (2006), Load code for the design of building structures－GB 50009 - 2006, Chinese building industry press, Beijing, (in Chinese).
20 Saunders, J.W. and Melbourne, W.H. (1975), "Tall rectangular building response to cross-wind excitation". Proceedings of the 4th Int. Conf. On Wind Effects on Buildings and Structures, Cambridge University Press, Cambridge.
21 Zhou, Y., Gu, M. and Xiang, H.F. (1999a), "Alongwind static equivalent wind loads and responses of tall buildings. Part I: Unfavorable distributions of static equivalent wind loads", J. Wind Eng. Ind. Aerod., 79(1-2), 135-150   DOI   ScienceOn
22 Zhou, Y., Gu, M. and Xiang, H.F. (1999b), "Alongwind static equivalent wind loads and responses of tall buildings. Part II: Effects of mode shapes", J. Wind Eng. Ind. Aerod., 79(1-2), 151-158.   DOI   ScienceOn
23 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
24 Islam, M.S., Ellingwood, and Corotis, R.B. (1990), "Transfer function models for determining dynamic wind loads on buildings" , J. Wind Eng. Ind. Aerod., 36(10), 449-458   DOI