BFRP 和 CFRP 加固受弯混凝土界面疲劳性能试验
谢建和;黄昆泓;李自坚;张洹;许光辉
【期刊名称】《建筑科学与工程学报》 【年(卷),期】2015(000)004
【摘要】以纤维增强复合材料（FRP）片材外贴混凝土受弯构件为研究对象，探讨玄武岩纤维（BFRP）和碳纤维增强复合材料（CFRP）加固混凝土界面疲劳性能。通过实施四点弯曲加载试验，研究了BFRP和CFRP加固混凝土界面疲劳破坏模式、界面疲劳裂缝扩展规律以及构件跨中挠度和FRP应变随加载循环次数的变化规律，并对BFRP和CFRP加固混凝土界面的静载剥离承载力和疲劳寿命进行了分析，给出了BFRP和CFRP加固混凝土界面的疲劳强度。研究结果表明：与BFRP‐混凝土界面相比，CFRP‐混凝土界面的静载剥离承载力提高了约50％，其疲劳寿命也明显提高；既有疲劳历程对BFRP和CFRP加固混凝土界面的静载剥离承载力影响不大。%Taking the flexurally strengthened concrete members with fiber reinforced polymer (FRP) as the research object ,the fatigue behaviors of the concrete interface strengthened with basalt fiber reinforced polymer (BFRP ) and carbon fiber reinforced polymer (CFRP ) were investigated .Based on a series of four‐point bending loading tests ,the fatigue failure modes and the propagation law of interface crack strengthened with BFRP and CFRP , as well as the evolution of mid‐span deflection and FRP strain change rule with loading cycle numbers were studied .Moreover , the debonding load‐carrying capacity and the fatigue life of the
BFRP 和 CFRP 加固受弯混凝土界面疲劳性能试验
