Abstract
Several similar frames or bents are connected in a single line by a flexible floor or roof system in steel industrial buildings such as 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 and/or resistance. First, 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. Second, a substructure on-line test system is used to simulate inelastic response such a building. Numerical analysis using hysteresis models and an equivalent linear analysis are carried out. The analysis results are compared with the results of substructure on-line test.
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