CFRP加固钢筋混凝土腹板受拉L形柱的试验研究  

Experimental Study on Reinforced Concrete Web Plate Tensioned L-Shaped Columns Strengthened with CFRP

作　　者：崔熙光[1] 万广宇[1] 田虹 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]营口市建设工程质量监督站,辽宁营口115000

出　　处：《沈阳建筑大学学报（自然科学版）》2008年第3期402-406,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅课题(2005351)

摘　　要：目的研究碳纤维布(CFRP)加固钢筋混凝土异形柱的受力和变形性能,分析碳纤维粘贴量和配筋率对其抗压弯承载力的影响,并且探讨构件截面几何参数、材料强度、材料用量等与腹板受拉L形截面柱抗压弯承载力之间的定量关系.方法通过相同截面不同配筋量和碳纤维布粘贴量的试件进行单调一次短期加载对比试验,分析各因素对构件承载力和延性等的影响,运用力的平衡和材料的本构关系建立了构件承载力计算的力学模型.结果得到具有对比性的荷载-柱中挠度、材料应变-荷载的关系曲线并进行分析,得出碳纤维布加固钢筋混凝土腹板受拉L形截面柱正截面抗压弯承载力计算公式.结论采用碳纤维布加固钢筋混凝土腹板受拉L形截面柱以提高其正截面抗压弯承载力是可行的,L形截面柱加固的承载力计算公式对类似的工程设计具有借鉴作用.This paper aims to study the stress and distorted performance of reinforced concrete shaped columns strengthened with CFRP, and discusses the quantitative relation between the component section, geometric parameter, materials strength, material usage and web plate tensioned L-shaped columns, compressing and bending resistance bearing capacity. According to the contrast test of monotone once short period feed between identical section using different ratio of reinforecement and craf specimen with CFRP, analyse the influencing factors on the structure bearing capacity and tensibility, etc; and utilizing the relation between force balance and material constitutive relationship, establish the calculated mechanical model of the structure bearing capacity. In response to the experimental results, achieve the contrast relational curve ineluding load-column, deflection, material strain-load and obtain the compressing resistance calculated formula of reinforced concrete L-shaped columns strengthened with CFRP. The reinforced system is so feasible to increase right section, compressing and bending resistance bearing capacity. In the future, we may draw lessons of the calculated formula of reinforced concrete L-shaped columns strengthened with CFRP.

关 键 词：钢筋混凝土 L形截面柱 碳纤维布 加固 

分 类 号：TU375.3[建筑科学—结构工程]