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为了研究沥青面层施工时高温对CFRP板加固箱梁桥顶板剥离破坏的影响,在室内对粘贴CFRP板前、后的钢筋混凝土梁进行了高温剥离破坏模拟试验和理论分析,开展了不同锚固方案下高温对粘贴CFRP板的钢筋混凝土试验梁碳纤维板剥离破坏形态研究。研究结果表明:经过高温阶段后粘贴CFRP板的试验梁在极限承载力发挥效力方面均比未粘贴CFRP板的提高,梁两端和跨中加压条同时附加螺栓锚固方案碳纤维板剥离时承载力发挥效力最显著;附加锚固试验梁剥离极限承载力与所分析的剥离极限承载力理论值接近。
In order to study the effect of high temperature on the peel-off failure of the roof of CFRP-reinforced box girder bridge during the construction of asphalt pavement, the simulation test and theoretical analysis of the high-temperature peel-off failure of the reinforced concrete beam before and after the CFRP board affixing were carried out indoors. Study on Peeling Failure Forms of Carbon Fiber Reinforced Polymer Test Beams Bonded with CFRP Board under High Temperature. The results show that the test beams affixed with CFRP plate after the high temperature stage are better than the non-affixed CFRP plates in the ultimate bearing capacity, and the bolt anchoring scheme is added at both ends of the beam and the mid- The effect of the most significant effect; additional anchoring test beam stripping limit bearing capacity and analysis of the theoretical value of the ultimate bearing capacity of stripping close.