Abstract:Based on the test results of temperature field distribution inside concrete in fire,mechanical and bond behaviors of glass fiber reinforced polymer(GFRP) bars under high temperature,fire endurance time that concrtete structure requires at different fire-resistance grade,some suggestions about fire-resistance design for concrete structures reinforced with GFRP bars are proposed.When structures require higher fire-resistance grade,the GFRP bars are not suitable for reinforced concrete structures.