鉄骨筋違の履歴特性の定式化 : その 1 定式化関数の誘導

概要

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Hysteretic behavior of single braces has been formulated mathematically. This study focuses on braces having a rectangular or wide-flange cross section designed to buckle about its weak axis and a slenderness ratio of between 30 and 150. The formulation is based primarily on experimental results derived by Wakabayashi et al. (ref. 23). The idealized loop is composed of one mechanism line in tension and compression ranges respectively, the linear elastic range, and the full plastic range in tension. Deterioration of strength and rigidity under load reversal is evaluated appropriately by translation rules of the mechanism lines. The hysteresis loops have the following characteristics, showing good agreement with the experimental results. (1) The axial force of a brace is expressed by simple functions with respect to the axial displacement, and the hysteretic rule is simple. (2) Parameters controling the hysteretic characteristics are expressed in terms of the nondimensional slenderness ratio of the brace only. (3) Deterioration of strength and rigidity under load reversal, which is distinctive in the braces, is adequately estimated. (4) Transient state caused by random input is duplicated consistently with sufficient accuracy.
一般社団法人日本建築学会の論文
1982-06-30