中文摘要：

为改善CFRP布加固混凝土梁板的抗火性能，选用厚涂型防火涂料作为CFRP布加固混凝土梁板的防火保护层的措施．以常温下正截面抗力标准值与频遇组合效应标准值的比值K、常温加固后抗力提高幅度β和防火涂料层厚度Co为参数，通过ANSYS有限元程序和matlab程序对火灾下CFRP布加固的混凝土梁板进行了大量的计算．提出了考虑K、β和耐火极限ta要求的CFRP布加固混凝土梁板厚涂防火涂料层厚度c0的取值建议．

英文摘要：

For improving the fire - resistance of concrete beams and slabs strengthened with CFRP sheets, it is proposed that the thick fireproofing coating showld be utilized. Some parameters such as the ratio K of characteristic value for resistance to characteristic value for frequent combination of load at normal temperature K, the increase amplitude of load - carrying β of strengthened structures at normal temperature and the thickness of fireproofing coating c 0 were determined for investigation. Thus, concrete beams and slabs strengthened with CFRP sheets subjected to fire were calculated based on FEM programs of ANSYS and Matlab. The recommendation on the thickness of fireproofing coating c 0 for concrete beams and slabs strengthened with CFRP sheets was developed considering the parameters of K, β and the fire - resistance limit tu .