On the basis of the researches of fire-protection experiments about CFRP reinforced concrete in foreign countries

a summary is given on the thermal characteristic parameters of CFRP at high temperatures.Moreover

by using the ANSYS software

a research of numerical simulation is given on the temperature field of CFRP reinforced concrete beam under high temperature and fire at different working conditions（having fire protection or not） and different working states（forms of painting fire-protection coating）.The results show that the time of fire resistance of the beam could exceed 2.5 hours when the depth of the fire-protection coating gets 40 millimeters

and painting fire-protection coatings at all the bottom side and two sides has the best result in fire-protection.The work in this paper makes it possible to further research the behavior and fire resistance of CFRP reinforced concrete structures

and it also has some guidance significations for the fire-protection design of CFRP reinforced concrete structures.