摘要
为研究耗能段长度变化对单斜杆式偏心支撑钢框架滞回性能的影响,应用有限元软件ABAQUS建立6个不同耗能段长度的单斜杆式偏心支撑钢框架模型并对其进行非线性数值分析,研究耗能段长度变化对单斜杆式偏心支撑钢框架承载力、刚度、耗能能力和延性的影响。研究表明:单斜杆式偏心支撑钢框架具有良好的滞回性能,耗能段长度变化对单斜杆式偏心支撑钢框架的承载力、刚度、耗能能力及延性均有较大影响;随着耗能段长度的增加,单斜杆式偏心支撑钢框的承载力及刚度呈降低趋势,耗能能力和延性系数先增大后降低。最后根据有限元分析结果给出了单斜杆式偏心支撑钢框架耗能段长度的合理取值范围。
In order to study the influence of the length of the energy dissipation section on the hysteretic behavior of single diagonal eccentrically braced steel frames,the software ABAQUS was used to establish six finite element models of single diagonal eccentrically braced steel frames with different length of the energy dissipation section for numerical analysis,the influence of the energy dissipation section length on the bearing capacity,stiffness,ductility and energy dissipation capacity of single diagonal eccentrically braced steel frames was studied. The results showed that single diagonal eccentrically braced steel frames had good energy dissipation capacity and the length of energy dissipation section had great influence on the bearing capacity,stiffness,ductility and energy dissipation capacity of single diagonal eccentrically braced steel frames. With the increase of energy dissipation section,single diagonal eccentrically braced steel frames＇ stiffness and bearing capacity showed a trend of lower,ductility coefficient and the ratio coefficient increased first and then decreased.According to the results of the finite element analysis,the reasonable length of single diagonal eccentrically braced steel frames energy dissipation section was obtained.
出处
《钢结构》
北大核心
2017年第8期15-19,共5页
Steel Construction
基金
陕西理工大学科研计划资助项目(SLGKY2017-14)
关键词
单斜杆式偏心支撑钢框架
耗能段长度
非线性数值分析
滞回性能
single diagonal eccentrically braced steel frames
length of energy dissipation section
nonlinear numerical analysis
hysteretic behavior
