摘要
CFRP筋具有强度高、重量轻、耐氯腐蚀性好等优点,被建议取代钢筋应用于建筑结构中。为了促进CFRP筋混凝土结构的应用与发展,本文对CFRP筋混凝土梁的受弯性能进行了试验研究。明晰了CFRP筋混凝土梁失效演化过程,讨论了箍筋间距对CFRP筋混凝土梁破坏模式、应力应变状态和荷载位移曲线的影响。结果表明:箍筋充分的约束作用可以使得CFRP筋混凝土梁在破坏后具有一定的延性特征,因此建议箍筋的间距控制在200mm以内。
The fibre-reinforced polymer(FRP)bars which have many merits of high strength,light weight,and good chloride corrosion resistance are recommended to replace steel bars in building structures.In order to promote the application and development of CFRP bar reinforced concrete structures,this paper conducts experimental research on the bending performance of CFRP bar reinforced concrete beams.The failure evolution process of CFRP bar reinforced concrete beams has been clarified.And the influence of the stirrup spacing on the failure mode,stress-strain state,and load-displacement curve of CFRP bar reinforced concrete beams has been discussed.The results indicate that sufficient confinement of stirrups can enable CFRP bar reinforced concrete beams to exhibit certain ductility characteristics after failure.Therefore,it is recommended to control the stirrup spacing within 200mm.
作者
仇志敏
谭宾峰
潘泽洲
黄凤玲
蔡立鳌
杜天朗
QIU Zhi-min;TAN Bin-feng;PAN Ze-zhou;HUANG Feng-ling;CAI Li-ao;DU Tian-lang(Zhenzhong Construction Group Co.,Ltd.,Guangzhou 511445;School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006)
出处
《广州建筑》
2023年第3期65-68,共4页
GUANGZHOU ARCHITECTURE
基金
广州市科技计划项目(202002030120)。
