建筑结构学报2024，Vol.45Issue(6)：1-15,15.DOI:10.14006/j.jzjgxb.2023.0464
钢筋混凝土框架结构屈服机制研究进展
Research progress on yield mechanism of RC frame structures
摘要
Abstract
In view of the problem that most reinforced concrete frame structures have failed to achieve'strong columns and weak beams'in many major earthquakes over the years,combined with the background information of China's seismic code revisions since the 1980s,this paper evaluates the research results of yield mechanisms of reinforced concrete frame structures at home and abroad,as well as the evolution of relevant regulations in the code.Firstly,the research background and relevant provisions of the GBJ 11-1989 about beam-column joints in frame structures are introduced.Secondly,the seismic damage phenomena and characteristics of some strong epicenter frame structures at home and abroad since the 21st century are summarized,several reflective research achievements in engineering and academia after earthquakes and relevant regulations at home and abroad are analyzed.Thirdly,based on the latest research trends on the yield mechanism of RC frame structures,the material constitutive equations at the micro level and the physical equations of components at the macro level are analyzed.Finally,it is pointed out that the capability design method based on the strength criterion has obvious defects in theory,and the overall yield mechanism of RC frame structures should be studied based on deformation failure criteria.In view of the problems existing in seismic design methods,this article proposes that the ratio of deformation capacity and demand can be used as index,which fully considers the component stiffness configuration and the influence of local stiffness degradation on internal force redistribution in the process of structural failure evolution,and theoretical and experimental research should be carried out from the node,component,and structural levels to comprehensively construct a new capacity design method based on deformation criteria.关键词
钢筋混凝土框架结构/屈服机制/变形准则/变形能力需求比/能力设计方法Key words
RC frame structure/yield mechanism/deformation criterion/ratio of deformation capacity and demand/capacity design method分类
建筑与水利引用本文复制引用
杨锐,罗开海,黄世敏..钢筋混凝土框架结构屈服机制研究进展[J].建筑结构学报,2024,45(6):1-15,15.基金项目
中国建筑科学研究院有限公司院士工作站科研基金项目(20220122330730021). （20220122330730021）
