CAJ | 학술논문

为了给结构加固补强提供真实可靠的参考，考虑结构自身持续荷载作用及海水干湿循环作用，对CFRP与高强混凝土的界面黏结性能进行研究。利用5％浓度的NaCl溶液模拟海水，利用发明的持载装置施加持续荷载，采用双面剪切试验方法对CFRP－高强混凝土的界面黏结性能变化规律进行分析。研究结果表明：随着干湿次数增加，界面破坏方式发生改变，黏结强度、剥离荷载、界面极限端部滑移逐渐降低；施加持续荷载作用将导致界面损伤加重，并加速界面破坏方式的转变速度。
위료급결구가고보강제공진실가고적삼고，고필결구자신지속하재작용급해수간습순배작용，대CFRP여고강혼응토적계면점결성능진행연구。이용5％농도적NaCl용액모의해수，이용발명적지재장치시가지속하재，채용쌍면전절시험방법대CFRP－고강혼응토적계면점결성능변화규률진행분석。연구결과표명：수착간습차수증가，계면파배방식발생개변，점결강도、박리하재、계면겁한단부활이축점강저；시가지속하재작용장도치계면손상가중，병가속계면파배방식적전변속도。
In order to provide reliable reference for the reinforcement of building structures,the bond behavior of high strength concrete with CFRP was studied,considering the effect of wet-dry cycles and sustained load.The 5% NaCl solution was used to simulate seawater,and the self-designed loading device was adopted to apply sustained load.Based on this,the bond performance of high strength concrete with CFRP was analyzed with the doubled-sided shear test.The results indicate that with the increase of wet-dry cycles,the failure mode of in-terface alters and,the bonding strength,peel load and the terminal slip reduces gradually.Moreover,sustained load will aggravate interface damage and accelerate the transition speed of the failure mode of interface.