非線形弾性復元力特性を有する鋼構造骨組のサブストラクチャ擬似動的実験

概要

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In the previous study, the authors proposed a novel beam-column joint system, or an elastic hinge joint system. This joint system exhibits a self-centering behavior; that is, it has a nonlinear hysteresis character of force-rotation restoration. Steel structural frames with such a joint system can be used to control the structural damage as well as to reduce the residual strain after severe earthquakes. The objective of the present study is to investigate the response of steel structural frame with the proposed elastic hinge joint system to earthquakes, based on a substructure pseudo-dynamic test. The results show a nonlinear elastic hysteresis character of the relation between moment and rotation angle at the joint, as a theoretical model predicts. The maximum shear force and acceleration at each story of the structure induced by earthquakes are both reduced by such a behavior of the joint system.
一般社団法人日本建築学会の論文
2011-03-25