すべての部材の準静的な最大荷重効果を同時に再現するユニバーサルな等価静的風荷重算定の試み

概要

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This paper discusses equivalent static wind load that reproduces the maximum load effect on structural members. Current methods for estimating equivalent static wind load are mainly aimed at a certain load effect on a structural member or wind force. In practical design, innumerable maximum load effects can be considered. Therefore, strictly speaking, innumerable equivalent static wind loads also have to be considered for each of these load effects. In this study, the equivalent static wind load that reproduces maximum load effects is shown by a combination of the eigen modes calculated by POD analysis to the fluctuating wind pressure. Applying a singular value decomposition to a matrix of eigen modes by the influence function optimizes the equivalent static wind load combination. This method is applied to large cantilevered roof models. The maximum load effects for bending moment and shear force are focused to estimate the equivalent static wind load. The solution shows the equivalent static wind load that simultaneously reproduces both maximum shear force and maximum bending moment for all structural members.
2005-04-30