地震時における多層骨組の最大変形とエネルギー応答

概要

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The structural behavior of structures under earthquakes can be clearly described on the basis of the balance of the input energy by earthquakes and the energy absorption capacity of structures. In practical seismic design, not only cumulative inelastic deformations which can be directly related to the energy absorption capacity but also the maximum plastic deformations and residual inelastic deformation must be precisely estimated. In this paper, the deformation responses of the multi-story moment frames are obtained by numerical analyses and the relationship between cumulative deformations and the maximum deformations are made clear. The structural types are identified to be composite structures composed of elastic(flexible) elements and elastic-plastic(stiff) elements. The most important parameter which governs the deformation response is found to be the shear stress ratio between the flexible and stiff elements.
1999-01-30