全CFRP筋混凝土柱低周反复荷载试验研究  

Experimental study on concrete columns reinforced with CFRP bars under low cyclical loading

作　　者：江世永[1] 余晗健 姚未来 李雪阳[3] 

机构地区：[1]后勤工程学院训练部,重庆401311 [2]特种作战学院从化建设指挥部,广东广州510000 [3]后勤工程学院军事土木工程系,重庆401311

出　　处：《四川建筑科学研究》2017年第3期99-104,共6页Sichuan Building Science

基　　金：重庆市科技攻关重点项目(cstc2011ab0043)

摘　　要：对6根不同轴压比及剪跨比的CFRP筋混凝土柱进行了低周反复荷载试验,记录了试验现象,分析了试件的滞回曲线、骨架曲线、耗能性能和刚度退化。研究结果表明,CFRP筋混凝土柱的承载能力较强,轴压比和剪跨比对试件抗震性能的影响与钢筋混凝土柱类似,均为影响其抗震性能的重要因素。运用传统延性指标计算了试件的延性系数,分析发现,传统延性系数均不能全面描述试件的延性规律,引入改进综合性能指标,其能较好地反映不同轴压比和剪跨比对CFRP筋混凝土柱抗震性能的影响。Six concrete columns reinforced with CFRP（ carbon fiber reinforced plastics） bars with different axial compression ratios and shear span ratios were tested under the cyclical loading. The experimental phenomena were recorded, and hysteretic curves, skeleton curves, energy dissipation and stiffness degradation of the specimens were analyzed. The results show that concrete column reinforced with CFRP bars has a strong bearing capacity, the influence of axial compression ratio and shear span ratio on the seismic performance of the specimens is similar to that of reinforced concrete column. Axial compression ratio and shear span ratio are important factors affecting the seismic performance of the specimens. The ductility which is calculated by the traditional method is not suitable for the specimens by the analysis. The improved integrated performance index can better reflect the influence of different axial compression ratio and shear span ratio on the seismic performance of CFRP reinforced concrete columns.

关 键 词：碳纤维筋混凝土柱 低周反复荷载 抗震性能 改进综合性能指标 

分 类 号：TU375[建筑科学—结构工程]