摘要
通过制备出不同试样,并测试其在高温环境中的黏结强度问题,详细分析了不同工况时GFRP筋与混凝土黏结强度问题,并根据测试数据推导理论模型。研究结果得出:温度对GFRP筋与混凝土黏结效果有很大的影响,随着温度升高,两者之间黏结强度不断降低;温度升高使滑移量增加,并且当温度接近玻化温度点时,滑移量变化出现波动,根据测试数据构建了黏结滑移理论式。
Experimental methods are used to prepare different samples and test their bond strength in high temperature environments.The bond strength of GFRP bars and concrete under different conditions are analyzed in detail,and the theoretical model is derived based on the test data.The research results show that temperature has a great influence on the bonding effect between GFRP bars and concrete.As the temperature increases,the bonding strength between the two continuously decreases.The temperature increase causes the slippage to increase,and when the temperature approaches vitrification at the temperature point,the variation of the slip amount fluctuates.The theoretical formula of the bond slip is constructed based on the test data.
作者
陈旭元
李平
CHEN Xuyuan;LI Ping(School of Civil Engineering,Jiangsu University of Engineering and Technology,Nantong 226300,China;School of Civil and Transportation,Hohai University,Nanjing 210098,China)
出处
《混凝土》
CAS
北大核心
2021年第1期43-46,共4页
Concrete
基金
2018年南通市科技计划项目“高层建筑深基坑围护结构装配施工关键技术研究与应用”(JC2018097)
2018年江苏工院自然科学基金重点项目“深基坑维护结构装配施工关键技术研究”(GYKY/2018/4)。
