梁降伏型RC骨組における2方向地震力同時性の近似評価方法

概要

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A computer program was developed to simulate 3-dimensional nonlinear earthquake response of reinforced concrete structures. The interaction between biaxial bending moment and axial force at the two ends of column members was considered using inelastic fiber elements, the hysteresis relations of which were based on those of the materials. The column fiber section was divided into 9 lumped concrete and 4 lumped steel elements. In this paper, 16-, 8- and 4-story RC space frames were designed using "weak beam-strong column" concept, and analyzed under bi-directional earthquake motions. An approximate method is presented for estimating the biaxial effect in the beam-yielding structures from independent uni-directional equivalent single-degree-of-freedom analysis and input acceleration. The elastic and inelastic responses spectra of the one mass system are also presented.
一般社団法人日本建築学会の論文
1991-03-15