摘要
为研究长细比对玄武岩纤维增强聚合物(BFRP)网格增强工程水泥基复合材料(ECC)复合约束方形钢筋混凝土(RC)柱轴压性能的影响,通过试验研究和理论分析,探讨不同长细比下BFRP网格/ECC复合加固对RC柱的承载能力、延性和破坏模式的作用机制。试验设计了7个试件,包括未加固的对照组和不同长细比的加固组。结果显示:加固后的RC柱承载能力和延性显著提高,且加固层与混凝土界面黏结性能良好。试验数据和荷载-应变曲线表明,加固柱的承载能力和延性优于未加固柱,虽然长细比的增加会导致加固柱极限承载力略微下降,但影响相对较小,说明BFRP网格/ECC复合加固方法对不同长细比的柱均具有良好的适应性。
The slenderness ratio is an important parameter affecting the axial compression performance of reinforced concrete(RC)columns.Through experimental research,this study investigated the mecha-nisms by which basalt fiber reinforced polymer(BFRP)grids and engineered cementitious composite(ECC)reinforcement measures influenced the load-bearing capacity,ductility,and failure modes of RC columns under different slenderness ratios.Additionally,the effect of BFRP grid-reinforced composite confinement on the axial compression performance of square reinforced concrete columns was explored.The experimental design included seven specimens,comprising an unreinforced control group and several reinforced groups with varying slenderness ratios.The test results indicated that the load-bearing capacity and ductility of the reinforced RC columns were significantly improved,and the bonding performance at the interface between the reinforcement layer and concrete was satisfactory.Experimental data and load-strain curves showed that the load-bearing capacity and ductility of the reinforced columns outperformed those of the unreinforced columns.Although an increase in slenderness ratio led to a slight decrease in the ultimate load-bearing capacity of the reinforced columns,the impact was relatively small,demon-strating that the BFRP grid/ECC composite reinforcement method exhibited good adaptability for columns with different slenderness ratios.
作者
黄晓艳
邓朗妮
经凤明
马勇军
杨磊
赖世锦
方帅威
HUANG Xiaoyan;DENG Langni;JING Fengming;MA Yongjun;YANG Lei;LAI Shijin;FANG Shuaiwei(School of Civil Architecture and Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Liuzhou Oweim Machinery Co.,Ltd.,Liuzhou 545006,China;China Railway 12th Bureau Group Electrification Engineering Co.,Ltd.,Taiyuan 030024,China)
出处
《广西科技大学学报》
2025年第3期52-59,共8页
Journal of Guangxi University of Science and Technology
基金
广西科技计划(重大专项)项目(桂科AA22068066)资助。
关键词
BFRP网格
ECC
钢筋混凝土方柱
轴压性能
长细比
复合加固
BFRP grid
ECC
reinforced concrete square column
axial pressure performance
length to length ratio
reinforcement
作者简介
第一作者:黄晓艳,在读博士研究生,讲师,研究方向:结构健康监测及加固修复,E-mail:3162395710@qq.com。
