2方向水平地動を受ける立体構造物の動的崩壊過程 その1 振動実験と応答解析の比較

Abstract

It is very important for the aseismic safety of building structures to make clear the dynamicfailure process of space frame structures subjected to two directional horizontal ground motion, espec-ially in the case of the structure with weak columns.In this paper, dynamic behaviors of single story frame structures subjected to bi-directionalground motions were experimentally investigated by using a shaking table and compared with thebehaviors of the same structures subjected to uni-directional ground motion. The model structuresused here are composed of the roof weight and rigidly connected steel columns having rectangularsection, which have different frequency characteristics in each direction.The response analysis of space frame structures, in which a hysteresis rule similar to Ramberg-Osgood type, between an equivalent force and corresponding deformation of arbitrary cross-sectionalong columns is formulated, satisfactorily duplicates the dynamic behavior of space frame structures.