弯剪作用下偏心支撑框架塑性分析

Plastic analysis of the eccentrically braced steel frames under the shear force and the bending moment

基于耗能梁段的塑性设计模型,考虑钢材的应变硬化效应影响,提出一种改进的偏心支撑耗能梁段塑性模型。并基于此模型对钢框架偏心支撑在弯矩、剪力共同作用下不同屈服模型进行了研究,推导出三种形式偏心支撑耗能梁段的受内力公式,丰富了现有的耗能梁段塑性设计方法,与其在实际复杂应力状态下的受力更加接近。

An improved model of the link beam of the EBSF has been proposed in this paper. The dissipative principles and characteristics of the EBSF have been analyzed based on this model, considering both the strain hardening effect and the interactive action between the bending moment and the shear force. Three different types of EBSF have been analyzed using this method in order to get their plastic performance under the earthquake.