碳纤维布约束混凝土短柱轴压性能试验研究
Experimental Study on Axial Compression Performance of Concrete Short Columns Confined by Carbon Fiber Cloth
黄京 1陈顺超 1王筱玥 1邵现晖 1李正垣 2聂良鹏2
作者信息
- 1. 西南林业大学土木工程学院,云南昆明 650224
- 2. 云南通衢工程检测有限公司,云南昆明 650200
- 折叠
摘要
采用碳纤维布,对6组混凝土短柱进行环向粘贴加固,考察了碳纤维布加固对短柱的轴心抗压极限承载能力的提升效果:分析了碳纤维布加固对短柱的破坏形态和荷载应变关系;通过各组试件试验结果的对比,分析了碳纤维布的用量、布置形式对轴心抗压承载力的影响.实验表明:随着包裹间距的减小,混凝土圆柱轴心受压逐渐增大,层数相同的情况下,加固面积越大,约束混凝土抗压强度和变形能力越大,对混凝土的加固效果越明显,因此加固过程中,可以采用CFRP纤维布增加混凝土圆柱的轴压性能.
Abstract
Carbon fiber fabric was utilized to reinforce six groups of short concrete columns through circumferential wrapping,investigating the effect of carbon fiber fabric reinforcement on the axial compressive ultimate bearing capacity of the columns.The study analyzed the failure modes and load-strain relationships of the columns reinforced with carbon fiber fabric.Through comparative analysis of test results from each group of specimens,the impact of carbon fiber fabric quantity and arrangement on axial compressive bearing capacity was examined.Experimental findings revealed that as the wrapping spacing decreased,the axial compression of concrete cylinders increased progressively.Under equal layer conditions,larger reinforcement areas resulted in greater constraint on concrete compressive strength and deformation capacity,thereby exhibiting a more significant strengthening effect on concrete.Consequently,during the reinforcement process,CFRP fabric can be employed to augment the axial compression performance of concrete columns.
关键词
混凝土圆柱/碳纤维布/加固/轴压承载力Key words
Concrete cylinder/Carbon fiber fabric/Strengthening/Axial compressive bearing capacity引用本文复制引用
基金项目
云南省交通厅科技项目(云交科教便[2020]91号)
出版年
2024
NETL
NSTL
万方数据