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Mathematical Problems in Engineering
Volume 2014 (2014), Article ID 926253, 22 pages
http://dx.doi.org/10.1155/2014/926253
Research Article

A Method for Estimation of Extreme Values of Wind Pressure on Buildings Based on the Generalized Extreme-Value Theory

State Key Laboratory for Disaster Deduction in Civil Engineering, Tongji University, Shanghai 200092, China

Received 22 August 2013; Revised 12 December 2013; Accepted 15 December 2013; Published 21 January 2014

Academic Editor: Usik Lee

Copyright © 2014 Yong Quan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

By analysis of statistical characteristics and probability density distribution of extreme values of wind pressures on the surfaces of a typical low-rise building model and a typical high-rise building model, characteristics of the commonly used methods for estimating the extreme-values of wind pressure are discussed. The relationship between the parameters of the extreme value distribution of wind pressure and its observation length is then deduced based on the generalized extreme value theory and the independence of the observed extreme values. A new method for estimating the extreme values is developed by dividing the time history sample of the wind pressure into several subsamples. The extreme values of the wind pressure coefficients calculated with the present method and those with the commonly used methods are compared and the results indicate that the present method can estimate the extreme values of non-Gaussian wind pressure more accurately than the commonly used ones.