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通过5个长为1600mm、截面尺寸为450mm×100mm的GFRP筋混凝土板进行试验,其中1个板进行静力加载试验,另外4个板进行疲劳加载试验,研究了应力比对玻璃纤维增强聚合物(GFRP)筋混凝土板疲劳性能的影响,并在此基础上,基于Palmgren-Miner和Carten-Dolan两种理论,进行了GFRP筋混凝土板正截面疲劳损伤理论分析。结果表明,与Palmgren-Miner理论分析结果相比,Carten-Dolan理论对GFRP筋混凝土板疲劳寿命的预测结果更接近于试验结果并偏于保守。
Five GFRP bars with a length of 1600mm and a cross-section of 450mm × 100mm were tested on concrete slabs, one of which was subjected to static loading test and the other four were subjected to fatigue loading test. The effect of stress ratio on the properties of glass fiber reinforced polymer (GFRP) reinforced concrete slabs. On the basis of the above results, the theoretical analysis of the normal section fatigue damage of GFRP reinforced concrete slab was carried out based on the two theories of Palmgren-Miner and Carten-Dolan. The results show that, compared with the results of Palmgren-Miner theory, Carten-Dolan theory predicts the fatigue life of GFRP reinforced concrete slab more close to the experimental results and more conservative.