高强钢组合K型偏心支撑框架耗能梁段长度研究

Study on the performance of link beam of high strength steel K-type eccentrically braced frame

建立了多个耗能梁段长度不同的高强钢组合K型偏心支撑框架有限元模型,对其滞回性能进行了非线性数值分析,研究了耗能梁段长度对高强钢组合K型偏心支撑框架承载力、强度退化、刚度退化、延性和耗能能力的影响规律.结果表明:耗能梁段长度不同,相应的高强钢组合K型偏心支撑框架抗震性能差异较大.最后,结合承载力、强度、刚度、延性及耗能能力,给出了高强钢组合K型偏心支撑框架相关设计建议,为工程设计提供参考.

Finite element models of high strength steel K-eccentrically braced frame （EBF） with different link in length is established, and nonlinear numerical analysis of their hysteretic performance is made. The influence between different link in length and bearing capacity, strength degradation, stiffness degradation, ductility and energy dissipation capacity of high strength steel K-EBF is also studied. Results show that：the seismic performance of high strength steel K-EBF differed much with link in different length. Finally, some design recommendations are given to combine with the capacity, strength, stiffness, ductility and energy dissipation capacity of the high strength steel K-EBF to provide reference for engineering design.