地震時における柔剛混合構造せん断型多層骨組の損傷集中特性

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The energy input to the structure exerted by an earthquake is the most important quantity as a loading effect against the structure. The total energy input of a structure by an earthquake is the same amount as the energy absorbed by the structure. And the total energy input is a very stable amount which is mainly influenced by the total mass and the fundamental natural period of the structure. The total damage of structures under earthquakes can be clearly described by the energy spectrum governed by the total mass and fundamental natural period of the structure, irrespective of the structural behaviors being elastic or inelastic. On the other hand, the damage distribution of multi-story frames is very sensitive to the strength distribution of structures. The flexible-stiff mixed structure, which is composed of flexible lements with law rigidity and large elastic deformation capacity, and stiff elements with high rigidity and high energy absorption capacity, can be considered to be a preferable structural form in efficiency of energy absorption. The relationship between the maximum deformation and cumulative inelastic deformation of the flexible-stiff multi-story shear type frames were obtained already. In this paper, the damage concentration characteristics of flexible-stiff mixed multi-story shear type frames are made clear. The most important parameter, which governs the damage concentration characteristics, is the shear stress ratio between the flexible elements and stiff elements.
2000-10-30

地震時における柔剛混合構造せん断型多層骨組の損傷集中特性

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