線形座屈解析を用いた鋼構造平面骨組の座屈設計 : その2 地震荷重に対する定式化とブレース付骨組への適用

概要

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We formulate a stability design procedure for plane steel frames subject to combination of vertical and earthquake loadings. The formulation is an extension of the basic framework for stability design using the linearized buckling analysis presented in Part 1 of this paper. Interaction of axial force and bending moment is taken into account, which is not negligible in the case of the combined loadings. In the numerical example, a braced frame with a slender column is designed in accordance with the current design code and the proposed method. Comparison of the design results demonstrate the possibility of reducing member sizes by the use of the present method. We also show the validity of the estimate of the inelastic buckling load obtained by the present approach by comparing it with the buckling load computed by the finite element method.
2005-04-30