Based on reinforced concrete beams (RC beams) strengthened with CFRP laminates,a new method for calculating the reliability of RC beams is presented.The reliability of the new part and the original part are calculated,and the influence of the material properties,the content and Post-Strain of CFRP on the reliability and consistency of the new part and the original part are analyzed.The results show that,under concrete crushing failure,with improved material properties and content of CFRP,the reliability of the original part stays almost unchanged,while the reliability of the new part increases.The reliability of the various parts reaches good consistency when CFRP ultimate tensile strain average is 0.014,CFRP material partial coefficient is 1.5,and CFRP ratio is the minimum design value.%对于粘贴CFRP片材加固的RC梁,给出了加固梁可靠度计算的一种新方法.分别计算原有部分和新加部分的可靠度,分析了CFRP材料性能、片材用量、滞后应变等因素对新旧部分的可靠度及其协调一致的影响.结果表明,在混凝土压坏的破坏模式下,提高CFRP材料性能及用量,原有部分可靠度基本保持不变,新加部分可靠度提高;在CFRP极限拉应变平均值取0.014,材料分项系数取1.5,配布率取最小设计配布率时,各部分可靠度能够协调一致.
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