Wind loading effects and equivalent static wind loading on low-rise buildings

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2006-05

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Abstract

Wind-induced pressures acting on the Wind Engineering Research Field Laboratory (WERFL) of Texas Tech University are integrated over each surface to obtain three forces and moments at the base of the building along the three principal axes with its origin at the geometric center of the building. Mean and fluctuating pressure distributions around the WERFL building are investigated, and the pressure distributions producing maximum fluctuating along-wind loading, across-wind loading, and torsional moment are studied, and the correlation between these forces is studied, a method to investigate the load combination of these forces is proposed.

WERFL building is also used for estimation of wind loading effects and corresponding gust response factors and background factors, and a wind tunnel model of Tokyo Polytechnic University is also utilized. The gust factors and back ground factors of responses of these two buildings under wind loading are calculated respectively. The responses calculated by pressure time histories are compared to those calculated by applying ASCE7-05. Methods to investigate universal equivalent static wind load are applied to both buildings. Several equivalent static wind loading (ESWL) methods are compared, and the universal ESWL method is applied to WERFL building and another modified universal ESWL method is also utilized for WERFL building.

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