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Publication Citation: Computer-Based Wind Design of Low-Rise Buildings: Peak Estimation of Non-Gaussian Wind Effects

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Author(s): Fahim Sadek; Emil Simiu;
Title: Computer-Based Wind Design of Low-Rise Buildings: Peak Estimation of Non-Gaussian Wind Effects
Published: March 01, 2001
Abstract: This paper is a condensed version of G2001-1853, Peak Non-Gaussian Wind Effects for Database-Assisted Low-Rise Building Design, for publication in the Journal of Engineering Mechanics.Original paper abstract was:Procedures for estimating the peaks of the stochastic response of tall buildings to wind loading are based on the assumption that the response is Gaussian. Those procedures are therefore inapplicable to low-rise buildings, in which wind-induced internal forces have generally non-Gaussian marginal distributions. An automated procedure is developed for obtaining efficiently sample statistics of internal force peaks for low-rise building design and codification. The procedure is designed for use in software for calculating internal force time series by the database-assisted design approach. A preliminary step in the development of the procedure is the identification of the appropriate marginal probability distribution of the time series using the probability plot correlation coefficient method. The result obtained is that the gamma distribution and a normal distribution are appropriate for estimating the peaks corresponding, respectively, to the longer and shorter tail of the time series histograms. The distribution of the peaks is then estimated by using the standard translation processes approach. Because estimates obtained from this approach are based on the entire information contained in the time series, they are more stable than estimates based on observed peaks. The procedure can be used to establish minimum acceptable requirements with respect to the duration and sampling rate of the time series of interest, so that the software used for database-assisted design be both efficient and accurate.
Conference: America's Conference on Wind Engineering
Proceedings: Proceedings of the Americas Conference on Wind Engineering
Dates: March 1, 2001
Keywords: building codes;building technology;database-assisted design;low-rise buildings;non-Gaussian procedures;probability distribution;stochastic procedure;structural reliability;wind loads
Research Areas: Building and Fire Research