摘要
为研究内填耗能芯框中心支撑钢框架的抗震性能并与内填带耗能梁段交叉支撑钢框架和钢框架对比,利用有限元分析软件ABAQUS对3榀框架进行滞回模拟。首先建立引入钢材损伤的有限元实体模型对内填带耗能梁段交叉支撑双层单跨钢框架试验试件进行了模拟,有限元数值模拟结果与试验结果相吻合。在验证ABAQUS有限元数值模拟方法模拟结果可靠的基础上,分别建立了单层单跨的钢框架、带耗能梁段交叉支撑钢框架和内填耗能芯框中心支撑钢框架的有限元模型各1榀,得到了3榀钢框架在低周往复荷载作用下的滞回曲线,并对其水平承载力、抗侧刚度、延性及耗能能力进行了对比。结果表明:内填耗能芯框中心支撑钢框架具有较高的水平承载力、抗侧刚度、耗能能力和延性。
In order to investigate the seismic performance of concentrically braced steel frames filled with core steel frames （CCFBF） and compare with the steel frames embedded cross shape braces with link beams, the hys- teretic simulation of the two frames was carried out using the finite element analysis software ABAQUS. Firstly, a finite element model with damage criterions of concentrically braced steel frames filled with core steel frames （CLBBF） were established with the finite element software ABAQUS. The results from the finite element numeri- cal simulation are in agreement with the experimental results. The simulated results show the reliability and su- periority of this method. Then the finite element models of a concentrically braced steel frames filled with core steel frames, a steel frame embedded cross shape braces with link beams and a steel frame were established to carry out the nonlinear numerical analyses for they hysteretic behavior. The horizontal bearing load capacity, stiffness degeneration, ductility and energy dissipation capacity of three frames were compared. The results indi- cate that the concentrically braced steel frames filled with core steel frame has excellent horizontal bearing load capacity, lateral stiffness, ductility and energy dissipation capacity.
出处
《苏州科技大学学报（工程技术版）》
CAS
2017年第2期13-18,共6页
Journal of Suzhou University of Science and Technology（Engineering and Technology Edition）
关键词
内填耗能芯框中心支撑钢框架
抗震性能
损伤
有限元分析
concentrically braced steel frames filled with core steel frame （CCFBF）
seismic performance
dam-age criterions
finite element analysis
