Sampling Errors in the Estimation of Peak Wind-Induced Internal Forces in Low-Rise Structures
Publication: Journal of Engineering Mechanics
Volume 130, Issue 2
Abstract
Peak values in time histories of wind effects may be obtained by using the entire information inherent in the time series of the wind effect, a method entailing the estimation of the probability distribution of the peak through the application of the classical Rice procedure extended for non-Gaussian time histories. We present estimates of the sampling errors inherent in this method. These are needed for structural reliability calculations and for decisions on the requisite length of wind tunnel pressure records, especially for database-assisted design. If based on the analysis of 1-h-long records generated by Monte Carlo simulation, typical sampling errors in the estimation of peaks of time histories corresponding to windstorms of 1-h duration are about 5%. If based on 30- or 20-min records, they are about 1.5 times or twice as large, respectively. Consideration of the sampling errors in reliability calculations entails an estimated increase in the requisite safety margins with respect to wind loading of roughly 2, 3, and 5% if 1-h, 30-min, or 20-min records are used, respectively.
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References
ASCE. (1995). “Minimum design loads for buildings and other structures.” ASCE 7-95, New York.
Cook, N. J. (1985). The designer’s guide to wind loading of building structures—Part 1, Butterworths, London.
Diniz, S. M. C., and Simiu, E. (2003). “Probabilistic description of wind effects and wind load factors for database-assisted design.” Proc., 11th Int. Conf. on Wind Engineering, C. Letchford and K. Mehta, eds., in press.
Ellingwood, B. R., Galambos, T., McGregor, J., and Cornell C. A. (1980). “Development of a probability based load criterion for American National Standard A58.” NBS Special Publication No. 577, National Bureau of Standards, Washington, D.C.
Gioffrè, M., Grigoriu, M., Kasperski, M., and Simiu, E.(2000). “Wind-induced peak bending moments in low-rise building frames.” J. Eng. Mech., 126(8), 879–881.
Grigoriu, M. (1995). Applied non-Gaussian processes, Prentice-Hall, Englewood Cliffs, N.J.
Holmes, J. D., Melbourne, W. H., and Walker, G. R. (1989). “A commentary on the Australian standard for wind loads.” Australian Wind Engineering Society, Rep. No. AS 1170, Part 2, Melbourne, Australia.
Kasperski, M. (1997). “Specification and codification of design wind loads.” Rep., Fakultät für Bauingenieurwesen, Ruhr-Universität, Bochum, Germany.
Kasperski, M., Koss, H., and Sahlmen, J.(1996). “BEATRICE joint project: Wind action on low-rise buildings. Part 1. Basic information and first results.” J. Wind. Eng. Ind. Aerodyn., 64, 101–125.
Minciarelli, F., Gioffrè, M., Grigoriu, M., and Simiu, E.(2001). “Estimates of extreme wind effects and wind load factors: Influence of knowledge uncertainties.” Probab. Eng. Mech., 16, 331–340.
Sadek, F., and Simiu, E.(2002). “Peak non-Gaussian wind effects for database-assisted low-rise building design.” J. Eng. Mech., 128(5), 530–539.
Whalen, T. M., Shah, V., and Yang, J.-S. (2000). “A pilot project for computer-based design of low-rise buildings for wind loads—The WiLDE-LRS user’s manual.” NIST Rep. No. GCR 00-802, National Institute of Standards and Technology, Gaithersburg, Md.
Whalen, T. M., Simiu, E., Harris, G., Lin, J., and Surry, D.(1998). “The use of aerodynamic databases.” J. Wind. Eng. Ind. Aerodyn., 77-78, 685–693.
Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 130 • Issue 2 • February 2004
Pages: 235 - 239
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Mar 19, 2002
Accepted: Jun 12, 2003
Published online: Jan 16, 2004
Published in print: Feb 2004
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