Along-Wind Load Effects on Tall Buildings: Comparative Study of Major International Codes and Standards
Publication: Journal of Structural Engineering
Volume 128, Issue 6
Abstract
Most international codes and standards provide guidelines and procedures for assessing the along-wind effects on tall structures. Despite their common use of the “gust loading factor” (GLF) approach, sizeable scatter exists among the wind effects predicted by the various codes and standards under similar flow conditions. This paper presents a comprehensive assessment of the source of this scatter through a comparison of the along-wind loads and their effects on tall buildings recommended by major international codes and standards. ASCE 7-98 (United States), AS1170.2-89 (Australia), NBC-1995 (Canada), RLB-AIJ-1993 (Japan), and Eurocode-1993 (Europe) are examined in this study. The comparisons consider the definition of wind characteristics, mean wind loads, GLF, equivalent static wind loads, and attendant wind load effects. It is noted that the scatter in the predicted wind loads and their effects arises primarily from the variations in the definition of wind field characteristics in the respective codes and standards. A detailed example is presented to illustrate the overall comparison and to highlight the main findings of this paper.
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References
Architectural Institute of Japan. (1996). Recommendations for loads on buildings, Architectural Institute of Japan, Tokyo.
ASCE. (1999). “Minimum Design Loads for Buildings and Other Structures.” ASCE 7-98, Reston, Va.
“Australian Standards: SAA Loading code, Part 2 - wind loads.” (1989). AS1170.2-89, Australia.
Counihan, J.(1975). “Adiabatic atmospheric boundary layers: A review and analysis of the data from the period 1880–1972.” Atmos. Environ., 9, 871–905.
Davenport, A. G.(1967). “Gust loading factors.” J. Struct. Div., ASCE, 93(3), 11–34.
Durst, C. D.(1960). “Wind speeds over short periods of time.” Meteorol. Mag., 89, 181–186.
Eurocode 1. (1995). “Basis of Design and Actions on Structures–Part 2-4: Actions on Structures–Wind actions.” European Prestandard ENV 1991-2-4.
Ferraro, V., Irwin, P. A., and Stone, G. K. (1989). “Wind-induced building accelerations.” Proc., 6th U.S. National Conf. on Wind Engineering, A. Kareem, ed., Univ. of Houston, Houston.
Greenway, M. E.(1979). “An analytical approach to wind velocity gust factors.” J. Indust. Aerodyn., 5, 61–91.
Holmes, J. D., Melbourne, W. H., and Walker, G. R. (1990). “A commentary on the Australian Standard for wind loads AS1170 part 2, 1989.” Australian Wind Engineering Society.
Kijewski, T., and Kareem, A.(1998). “Dynamic wind effects: A comparative study of provisions in codes and standards with wind tunnel data.” Wind Struct., 1(1), 77–109.
Jesien, W., Stathopoulos, T., and Kinh Ha, H.(1993). “Dynamic along-wind response of building: Comparative study.” J. Struct. Eng., 119(5), 1498–1515.
Lee, B. E., and Ng, W. K.(1988). “Comparisons of estimated dynamic along-wind responses.” J. Wind. Eng. Ind. Aerodyn., 30, 153–162.
Liepmann, H. W.(1952). “On the application of statistical concepts to the buffeting problem.” J. Aeronaut. Sci., 19(12), 793–800.
Loh, P., and Isyumov, N. (1985). “Overall wind loads on tall buildings and comparisons with code values,” Proc., 5th U.S. National Conf. on Wind Engineering, R. Dillingham and K. Mehta, eds., Wind Engineering Research Council, Lubbock, Tex.
NRCC. (1996). “Commmentary B—wind loads.” User’s Guide-NBC 1995 Structural Commentaries, Canadian Commission on Building and Fire Codes, National Research Council of Canada, Ottawa, Part 4, 9–42.
Simiu, E., and Scanlan, R. (1996). Wind effects on structures: Fundamentals and applications to design, 3rd Ed., Wiley, New York.
Solari, G.(1993a). “Gust buffeting. I: Peak wind velocity and equivalent pressure.” J. Struct. Eng., 119(2), 365–382.
Solari, G.(1993b). “Gust buffeting. II: Dynamic along-wind response.” J. Struct. Eng., 119(2), 383–397.
Solari, G., and Kareem, A.(1998). “On the formulation of ASCE 7-95 gust effect factor.” J. Wind. Eng. Ind. Aerodyn., 77, 673–684.
IBID78, 673-684(1998).
Vellozzi, J., and Cohen, E.(1968). “Gust response factors.” J. Struct. Div., ASCE, 94(6), 1295–1313.
Vickery, B. J. (1970). “On the reliability of gust loading factors.” Proc., Technical Meeting Concerning Wind Loads on Buildings and Structures, Building Science Series 30, National Bureau of Standards, Washington, D.C., 296–312.
Vickery, B. J. (1995). “The response of chimneys and tower-like structures to wind loading.” A State of the Art in Wind Engineering, Proc., 9th Int. Conf. on Wind Engineering, Wiley Eastern, New Delhi, India, 205–233.
Zhou, Y., Gu, M., and Xiang, H. F.(1999a). “Along-wind static equivalent wind loads and response of tall buildings. Part I: Unfavorable distributions of static equivalent wind loads.” J. Wind. Eng. Ind. Aerodyn., 79(1–2), 135–151.
Zhou, Y., Gu, M., and Xiang, H. F.(1999b). “Along-wind static equivalent wind loads and response of tall buildings. Part II: Effects of mode shape.” J. Wind. Eng. Ind. Aerodyn., 79(1–2), 151–158.
Zhou, Y., and Kareem, A.(2001). “Gust loading factor: A new model.” J. Struct. Eng., 127(2), 168–175.
Zhou, Y., and Kareem, A. (2002). “On the wind profiles definitions in ASCE 7.” J. Struct. Eng., in press.
Zhou, Y., Kareem, A., and Gu, M. (1999c). “Gust loading factors for design applications.” Wind Engineering into the 21st Century, Proc., 10th Int. Conf. on Wind Engineering, A. Larsen, G. L. Larose, and F. M. Livesey, eds., A. A. Balkema, Rotterdam, 169–176.
Zhou, Y., Kareem, A., and Gu, M.(2000). “Equivalent static buffeting loads on structures.” J. Struct. Eng., 126(8), 989–992.
Information & Authors
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Published In
Journal of Structural Engineering
Volume 128 • Issue 6 • June 2002
Pages: 788 - 796
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Nov 21, 2000
Published online: May 15, 2002
Published in print: Jun 2002
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