Experimental And Finite Element Analysis Of Fire And Strengthening Of Reinforced Concrete Beams

Based on the previous work, this issue take the advantage of program ANSYS tomake finite element analysis according to the experiment of reinforced concrete beamunder fire and reinforcement after fire. According to the result of finite element methodby ANSYS and the experiment, we tried to comprehend the behaviors of the beamunder fire and the reinforcement by CFRP (carbon fiber reinforced polymer) after fire.The main content includes:(1)By collecting and collating fire documents obtained by foreign and nativeresearchers, thermal and mechanical properties at high temperature of steel and concreteare summarized and concluded.(2)Introduce the experiment of reinforced concrete beam under fire andreinforcement by CFRP after fire.(3)Introduce the element type, material property needed in the program ANSYSanalysis as well as the modeling process.(4)According to the result of temperature field of beam section calculated byANSYS and measured in the experiment, we tried to obtain the character of temperaturefield of beam section under fire.(5)Obtain the relationship of load-displacement by ANSYS, and compare the resultwith the data measured in the experiment.(6)According to the structure damage experiment of reinforced beam after fire, wemade finite element analysis by ANSYS to obtain the relationship betweenload-displacement; the result coped with the experiment result.