Glue steel angle can improve the carrying capacity and stiffness of specimens without substantially increasing the size of section.To investigate the performance of fire-damaged RC continuous T-beams with high-strength rebar strengthened with steel angle

3specimens were experimentally studied.Wherein one beam is unexposed to fire

one beam is exposed to ISO 834 for 60min without strengthening

and one beam is exposed to ISO 834 for 60 min strengthened with steel angle.The test results showed that the initial bending stiffness of the fire-damaged specimen had an obviously decrease than the unexposed beam

after strengthening with steel angle its initial bending stiffness had a light increase compared to the unexposed beam.The carrying capacity had a 59.5%increase than the unexposed beam

while the ultimate deformation had a77.0% decrease

the deformation ductility factor had a 53.8% decrease

and the energy ductility factor had a 52.6% decrease.