The Overall Seismic Performance Study Of RC Frame Structuer After Strengthened Based On ANSYS

The reinforced concrete frame structure is one of the common structures form of industrial andcivil buildings. Because of its better integrity and ductility, the reinforced concrete frames arewidely used in earthquake-proof areas.With the frequent occurrence of earthquakes in recentyears, the concrete frames have been varying degrees of damage because of unreasonabledesign,improper use,disrepair and other reasons. In order to improve the seismic performance ofthe reinforced concrete frames after strengthened has become the focus of research in domesticand foreign. CFRP strengthened method and steel reinforcement method are currently the mostcommonly used method of reinforcement, which both have their advantages anddisadvantages.In summary,the reinforced concrete frame structure reinforced both with CFRPand steel plate to improve the overall seismic performance has become an important researchdirection.In this test,three reinforced concrete frame models established by ANSYS are imposed by thelow level of cyclic loading experiment. The mechanical properties of indicators and load-displacement curve of no reinforcement model KJ-1are compared with the test value,in order tovalidate the model of reasonable correctness.The hysteresis curve, the skeleton curve, theductility, the energy dissipation capacity, the stiffness,the bearing capacity and other mechanicalproperties of No reinforcement model KJ-1, model KJ-2reinforced by CFRP and model KJ-3whose beam reinforced by CFRP and the column reinforced by steel plate are compared witheach other,so as to study the impact on the overall seismic performance of the RC framestructure after reinforced.The results show that: the mechanical properties and he load-displacement curve of the no reinforcement model KJ-1fits well with the experimental results,verify the validity of the model;The CFRP reinforced method and the composite reinforcement method can improve the bearingcapacity, ductility and energy dissipation capacity, delay the degradation of the bearing capacityand stiffness. So that it improve the seismic capacity of the frame structure.The carrying capacity,ductility and energy dissipation capacity of composite reinforcement methods have been betterimproved than the CFRP reinforced method. The steel plate is better than the carbon fiber in thecolumn.