全CFRP筋混凝土柱低周反复荷载试验研究  

Experimental Research of Concrete Columns Reinforced with CFRP Bars under Horizontal Cyclic Loading Test

作　　者：宋荣基 江世永[2] 余晗健 董宇 

机构地区：[1]后勤工程学院军事土木工程系 [2]后勤工程学院训练部 [3]72359部队

出　　处：《后勤工程学院学报》2015年第3期26-31,共6页Journal of Logistical Engineering University

基　　金：重庆市科技攻关重点项目(CSTC 2011AB0043)

摘　　要：考虑轴压比、剪跨比和配箍形式的影响,对6根全CFRP筋混凝土柱进行低周反复荷载试验,通过分析滞回曲线、骨架曲线、位移延性系数和耗能能力等特征,研究CFRP筋混凝土柱的抗震性能。试验结果表明:CFRP筋混凝土柱具有较强承载能力和变形能力;轴压比和剪跨比是影响试件抗震性能的主要因素,轴压比越小,试件的变形和耗能能力越强,刚度退化越平缓,剪跨比越大,试件的变形能力越强;通用屈服弯矩法计算得到的延性系数能够较好反映CFRP筋混凝土柱的延性,轴压比越小、剪跨比越大,试件的延性越好;新型螺旋式矩形箍筋在试件延性及耗能方面表现良好,可以应用于工程实际。To study aseismic behavior of concrete columns reinforced with CFRP bars, six concrete columns were tested under horizontal cyclic loading, hysteretic curves and skeleton curves were analyzed and ductility coefficient and energy dissipation were calculated, considering the influences of axial compression ratio, shear span ratio and the stirrup type. The experimental results show that the specimens have good bearing and deformation capacity; axial compression ratio and shear span ratio obviously affect the aseismic behavior-the higher capacity of deformation and energy dissipation the specimens have, the gentler the rigidity curves tend to be, the higher the shear span ratio will be, the higher capacity of deformation they have; the ductility coefficient calculated by yield bending moment method reflects that the ductility of the specimens is good and the ductility of the specimen becomes better as the axial compression ratio decreases and the shear span ratio increases; the new type of spiral square stirrups which show excellent performance in the capability of ductility and energy dissipation can be used in practice.

关 键 词：CFRP筋混凝土柱 抗震性能 轴压比 剪跨比 螺旋式矩形箍筋 

分 类 号：TU317.1[建筑科学—结构工程]