不均等長方形ラ-メンの弾性座屈荷重略算法

Abstract

An approximate method is proposed to evaluate the elastic buckling strength of a multi-story, multi-bay rectangular frame with irregular arrangements of beam and column rigidities and column axial force distribution, combining two methods separately developed by Sakamoto and Wood for single-story, multi-bay frames and multi-story, single-bay frames, respectively.Sample calculations were made for a 14-story, 8-bay frahie desigued in the real practice, and 6-story, 2-bay frames in which one column was extremely slender or subjected to excessive axial force. It is shown that the proposed method gives very good estimates to the buckling strength although in the unsafe side, and that rather technical treatment is required in the process of calculation.