Analysis Of Hysteretic Performance For Corroded Reinforced Concrete Beams

Steel as the main reinforcement force material in the reinforced concrete members.corrosion degree greatly affects the durability and the working performance of reinforced concrete members,including hysteretic performance.At present,many scholars both at home and abroad study more about damage and earthquake action on the component level,but the study of damage cases component hysteretic performance system has yet to be further studied,supplement and perfect.In order to study changes withstand bending and shearing the role of simply supported beam before and after the hysteretic performance of steel corrosion.In this paper,select the reinforced concrete beam as the research object,based on the theory of reinforced concrete structure damage mechanism,with the help of Nacl solution electricity quickly corroded reinforced concrete beam specimens,and then to inverse symmetry beam specimen subjected to low-cyclic loading test,research on reinforcement corrosion rate has the effects on hysteretic performance of reinforced concrete beam specimens.On the basis of experimental study,using nonlinear finite element analysis based on the finite element simulation software,and contrast experiment and numerical simulation results,validate each other.The results of the experiment and simulation show: Different corrosion rate of reinforced concrete beam flexural failure modes are presented.With continuous vertical load,the beam energy dissipation capacity of specimens continue to decrease,after the maximum load,bearing capacity of presenting lower flat,after a sharp trend,and with the increase in the rate of steel corrosion,crack length and width of reinforced concrete beams increases,slip strength,stiffness,ductility decreased gradually,the slip between steel and concrete was more obvious.Shows the hysteretic behavior of the corroded reinforced concrete beam specimen is lower than never corroded beam specimens,The more serious the degree of reinforcement corrosion of beam specimens,the greater the amplitude of its hysteretic performance.