摘要
偏心支撑钢框架是在中心支撑钢框架的基础上发展起来的一种新型结构体系,它能够有效改善钢框架在大震作用下的抗震性能。本文基于已有耗能梁段的塑性设计模型,考虑钢材的应变硬化效应影响,提出了一种改进的偏心支撑耗能梁段塑性模型,并基于此模型对不同形式的偏心支撑钢框架在弯矩、剪力共同作用下的屈服模型进行了研究,推导出其塑性设计公式。
The eccentrically braced steel frames （EBSF） are a new structural system based on the concentrically braced frames, which improves the seismic performance of the steel frames under the earthquake. 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 as well as their plastic design under the earthquake.
出处
《四川建筑科学研究》
北大核心
2005年第6期42-45,共4页
Sichuan Building Science
关键词
偏心支撑钢框架
耗能梁段
塑性设计
支撑形式
eccentrically braced steel frame
link beam
plastic design brace shape
