TECHNICAL NOTE
Aug 1, 2000

Equivalent Static Buffeting Loads on Structures

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Publication: Journal of Structural Engineering
Volume 126, Issue 8

Abstract

The loads on buildings and structures caused by the buffeting action of wind have traditionally been analyzed using the gust loading factor (GLF) approach in most codes and standards. In this approach, the equivalent static wind loading used in design is equal to the mean wind force multiplied by the GLF. Although the traditional GLF method can ensure an accurate estimation of the displacement response, it may not provide a reliable estimate of other response components. In addition, this method fails to provide any guidance in cases with a zero mean response. This note presents a theoretical formulation for the buffeting wind loading on structures, which eliminates these shortcomings. A tall building and a long-span bridge are used to demonstrate the effectiveness and improved predictive features of the proposed formulation.

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References

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ASCE. (1996). “Minimum design loads for buildings and other structures” ASCE 7-95, New York.
2.
Davenport, A. G. (1967). “Gust loading factors.”J. Struct. Div., ASCE, 93(3), 11–34.
3.
Kareem, A. (1982). “Fluctuating wind loads on buildings.”J. Engrg. Mech. Div., ASCE, 108(6), 1086–1102.
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Kasperski, M., and Niemann, H. J. (1992). “The L.R.C. method—a general method of estimating unfavorable wind load distributions for linear and non-linear structures.” J. Wind Engrg. and Indust. Aerodyn., 41–44, 1753–1763.
5.
Scanlan, R. H., and Gade, R. H. (1977). “Motion of suspended bridge spans under gusty wind.”J. Struct. Div., ASCE, 103(9), 1867–1883.
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Simiu, E. (1980). “Revised procedure for estimating along-wind response.”J. Struct. Div., ASCE, 106(1), 1–10.
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Solari, G. (1993a). “Gust buffeting. I: Peak wind velocity and equivalent pressure.”J. Struct. Engrg., ASCE, 119(2), 365–382.
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Solari, G. (1993b). “Gust buffeting. II: Dynamic alongwind response.”J. Struct. Engrg., ASCE, 119(2), 383–398.
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Solari, G., and Kareem, A. (1998). “On the formulation of ASCE7-95 gust effect factor.” J. Wind Engrg. and Indust. Aerodyn., 77–78, 673–684.
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Vickery, B. J. (1970). “On the reliability of gust loading factors.” Proc., Tech. Mtg. Concerning Wind Loads on Build. and Struct., National Bureau of Standards, Washington, D.C., 296–312.
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Zhou, Y., Gu, M., and Xiang, H. F. (1999a). “Along-wind static equivalent wind loads and response of tall buildings. I: Unfavorable distributions of static equivalent wind loads.” J. Wind Engrg. and Indust. Aerodyn., 79(1–2), 135–150.
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Zhou, Y., Kareem, A., and Gu, M. (1999b). “Gust loading factors for design applications.” Proc., 10th ICWE, Danish Maritime Institute, Lyngby, Denmark, 169–176.
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Zhou, Y., and Kareem, A. (1999). “Equivalent static buffeting loads on structures.” Tech. Rep. No. ND99-001, Dept. of Civ. Engrg. and Geological Sci., University of Notre Dame, Notre Dame, Ind.

Information & Authors

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Published In

Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 126Issue 8August 2000
Pages: 989 - 992

History

Received: Oct 29, 1997
Published online: Aug 1, 2000
Published in print: Aug 2000

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Authors

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Member, ASCE
Member, ASCE
Res. Assoc., NatHaz Modeling Lab., Dept. of Civ. Engrg. and Geological Sci., Univ. of Notre Dame, Notre Dame, IN 46556.
Prof., NatHaz Modeling Lab., Dept. of Civ. Engrg. and Geological Sci., Univ. of Notre Dame, Notre Dame, IN.
Prof., Dept. of Bridge Engrg., Tongji Univ., Shanghai, 200092, P.R. China.

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