中文摘要：

通过玻璃纤维聚合物（GFRP）筋混凝土板的疲劳试验,分析了疲劳循环次数对GFRP筋混凝土板剩余承载力、跨中挠度、GFRP筋应变、混凝土应变和裂缝的开展等的影响.试验结果表明,在疲劳荷载作用下,随着疲劳循环次数的增加,疲劳上限荷载对应的试件的跨中挠度不断增大,GFRP筋应变和受压区混凝土应变也大幅度增加,裂缝宽度显著变大.200万次疲劳循环后,试件的剩余承载力约为静力荷载作用下试件承载力的67%.

英文摘要：

Based on the fatigue test of GFRP bars reinforced concrete slabs, the effects of the fatigue cycles on residual load-carrying capacity, deflection at mid-span, GFRP bar strain, compressive concrete strain and development of cracks were analyzed. Test results indicate that under fatigue loads, with the increasing of fatigue cycles, the mid-span deflection, GFRP bar strain and compressive concrete strain of the specimen corresponding to the upper load increase, the crack widths increase obviously. After the fatigue cycles of 2 millions, the residual load-carrying capacity is as low as 67% that of specimen under static load.