摘要
为研究焊接箍筋混凝土柱的滞回性能,以剪跨比、轴压比、配箍率和混凝土强度为设计参数,对12个焊接箍筋混凝土柱进行低周反复加载试验。观察各试件的破坏形态,实测试件的荷载-位移滞回曲线,探讨各设计参数对位移延性系数、强度、刚度和耗能系数等滞回性能指标的影响规律。研究结果表明:各试件的滞回曲线均较饱满,表现出良好的滞回性能;剪跨比对试件滞回性能指标的影响最为显著,轴压比的影响次之,配箍率和混凝土强度的影响较小。
To study hysteretic performance of concrete columns with welded closed stirrup,12 specimens with different shear ratios,axial compression ratios,stirrup ratios and strength of concrete were tested under quasi-static loading.The failure modes of the specimens were observed,the load-displacement hysteresis curve were measured,the influence of design parameters on the hysteretic performance indexes including displacement ductility coefficient,strength,stiffness and energy dissipation coefficient were discussed.It was shown that all hysteretic curves of concrete columns with welded confined stirrups were full with little pinch phenomenon.The impact of shear span ratio on the hysteresis performance index of the specimen was most significant,followed by axial compression ratio,and the impact of stirrup ratio and concrete strength was less.
作者
李泽良
颜军
LI Zeliang;YAN Jun(School of Civil Engineering and Architecture,Suqian College,Suqian 223800,China)
出处
《工业建筑》
CSCD
北大核心
2019年第8期100-107,共8页
Industrial Construction
基金
江苏省高校自然科学研究项目(16KJB560016)
宿迁市科技计划项目(H201620)
宿迁学院科研基金项目(2015KY12)
关键词
焊接箍筋
混凝土柱
滞回性能
剪跨比
轴压比
welded closed stirrup
concrete columns
hysteretic performance
shear-span ratio
axial compression ratio
