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碳纤维布约束混凝土短柱轴压性能试验研究

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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.
Experimental Study on Axial Compression Performance of Concrete Short Columns Confined by Carbon Fiber Cloth
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.

Concrete cylinderCarbon fiber fabricStrengtheningAxial compressive bearing capacity

黄京、陈顺超、王筱玥、邵现晖、李正垣、聂良鹏

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西南林业大学土木工程学院,云南昆明 650224

云南通衢工程检测有限公司,云南昆明 650200

混凝土圆柱 碳纤维布 加固 轴压承载力

云南省交通厅科技项目

云交科教便[2020]91号

2024

重庆建筑
重庆市建筑科学研究院

重庆建筑

影响因子:0.292
ISSN:1671-9107
年,卷(期):2024.23(5)
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