钢结构构件弯扭屈曲问题的计算和分析

Analysis of Lateral-Torsional Buckling of Steel Structural Members

本文导出了适用于梁、柱和压弯构件弯扭屈曲计算的统一表达式。该式考虑因素较全面,应用范围广泛,补充了现有梁、柱弯扭屈曲计算公式,提出了压弯构件弯扭屈曲的计算公式。此外,并建议对钢结构设计规范中所采用的C_3值进行修正。

In this paper, a unified formula for computing lateral-torsional buckling of beams, columns and members subjected to compression and bending has been derived. The formula has wide applicability as it takes more factors into consideration. The various currently used formulae for lateral-torsional buckling of beams and columns have been complemented, and the formula for computing member sub jected to compression and bending has been presented. Besides, the values of coefficient G3 given in the Design Code of Steel Structure are proposed to have a change.