摘要
对一个单层单跨剪切屈服型高强钢组合K型偏心支撑框架试件的滞回性能进行了低周往复循环试验研究,并且建立了多个层数不同的高强钢组合K型偏心支撑框架和Q345钢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,对两种结构的承载力、强度退化、刚度退化、延性、耗能能力以及用钢量进行了对比。研究表明:在满足抗震要求的前提下,高强钢组合K型偏心支撑框架的抗震性能良好,略差于相同设计条件下Q345钢K型偏心支撑框架的,但是构件截面较小,可以节省钢材、降低造价,具有较高的经济效益。
The hysteretic behavior of K-type eccentrically braced frames with high strength steel combination （K-HSS- EBFs） with one-bay and single story was studied under cyclic loading. The finite element models with different stories both of K-HSS-EBFs and Q345 K-EBFs were established to carry out the nonlinear numerical analyses for they hysteretic behavior. The bearing load capacity, stiffness degeneration, ductility, energy dissipation capacity and the usage of the steel of two structures were compared. The results indicate that the seismic performance of the K-HSS-EBFs is good,but slightly lower than that of Q345 K-EBFs with the same design conditions. The K-HSS-EBFs have smaller section of structural members and well meet the demands of the design codes and have highly economic efficiency by saving steel.
出处
《建筑结构》
CSCD
北大核心
2014年第17期7-14,6,共9页
Building Structure
基金
国家自然科学基金项目(51178382)
关键词
高强钢
偏心支撑
有限元
滞回性能
用钢量
high strength steel
eccentrical brace
finite element
hysteretic behavior
usage of steel
