摘要
结构的层间屈服位移角是量化结构位移延性系数的重要参数,也是结构抗震性能评估的重要指标之一。为研究不同设计参数对盖板加强节点钢框架结构的层间屈服位移角的影响,采用有限元软件ABAQUS建立了4个系列共计12个足尺钢框架子结构有限元模型,并进行了滞回性能分析,基于FEMA 273建议的方法确定了钢框架子结构的层间屈服位移角。研究结果表明:结构层高对盖板加强节点钢框架层间屈服位移角影响较小,而结构跨数、跨度、钢梁截面对盖板加强节点钢框架的层间屈服位移角影响较大。
The interstory yield displacement angle of structure is an important parameter to quantify the ductility coefficient of structural displacement,and it is also one of the important indicators for evaluating the seismic performance of structure.In order to study the influence of different design parameters on the yield displacement angle of steel frame with cover-plate reinforced connections,the finite element software ABAQUS was adopted to construct finite element models of four groups involving 12 full-scale steel frame substructure.The hysteretic analysis were performed,and the interstory yield displacement angle of steel frame substructure were calculated based on the proposed methods of FEMA 273.The results showed that the story height had little influence on the interstory yield displacement angle of steel frame substructure with cover-plate reinforced connections,however,the number of spans,and the cross section of steel beam section had important effects on the interstory yield displacement angle.
出处
《钢结构》
北大核心
2015年第1期8-12,共5页
Steel Construction
基金
国家自然科学基金项目(51178285)
关键词
钢框架
盖板加强节点
显著屈服
层间位移角
有限元分析
steel frame
cover-plate reinforced connection
significant yielding
interstory displacement angle
finite element analysis
