基于欧洲规范3中三维钢框架塑性铰分析的局部屈曲检验

Local Buckling Check According to Eurocode-3 for Plastic-Hinge Analysis of 3-D Steel Frames

根据欧洲规范3,对于I形截面三维钢框架塑性铰,建议采用局部屈曲检验的方法。提出轴力和双向弯矩下横截面应力分布的实用方法,可直接采用横截面分类的概念。欧洲规范3中,对于满足横截面要求的塑性铰整体分析也适用于局部屈曲检验。按照所提出的方法,通过二阶塑性铰分析,对2个不同构件尺寸的三维钢构架进行研究。介绍了大量塑性铰局部屈曲检验的情况。

This paper proposes a way to local buckling check according to Eurocode-3 for plastic-hinge analysis of 3-D steel frames with I-shaped sections. A useful technique for determination of stress distribution on cross-sections under axial force and bi-bending moments is proposed so that the concept of classification of cross-sections may be directly used. Cross-section requirements for plastic global analysis in Eurocode-3 are applied for a local buckling check. Two three-dimension steel frames with diverse con...