(50)剛体回転を伴う非剛床で連結された多構面鉄骨架構の弾塑性地震応答

概要

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Several similar frames or bents are connected in one line by flexible floor or roof system in steel building structures such as a gymnasium and a thermal power plant. Vertical braces are often added to the frames or bents as earthquake resisting elements, but they are sometimes not located uniformly due to the circumstances of building use, and this causes considerable eccentricity between centers of mass and stiffness or resistance. This paper presents an analytical model suitable for inelastic response analysis of such a type of building structure, where not only shear deformation of each floor but also an overall rigid-body rotation of floor system can be considered. Inelastic responses of 8,000 cases are numerically simulated for various combinations of floor stiffness and structural eccentricity, and the results are examined to discuss how much floor stiffness is enough to ignore the floor deformation in the design of this kind of building structure.
一般社団法人日本建築学会の論文
1999-03-10