Seismic Analysis About CFRP Reinforced Frame Joint Performance Based On ANSYS Software

Reinforced concrete structure is widely performed as strong column and weak beam.These structures due to poor seismic performance, which can not be neglected safetyhidden danger. Even though the design contents the seismic code provisions of the strongcolumn weak beam requirements, it is very difficult for in-situ reinforced concrete framestructure beam-column joints that completely avoid the end-column plastic hinge, inorder to achieve beam hinge mechanism, the existing node structure takes reinforcementmeasures to improve their seismic performance. This can make “strong beam and weakcolumn” into "strong column and weak beam". Therefore, it is very necessary to studythe seismic performance and reinforcement method of such structures.According to ANSYS establish intermediate node, edge node and corner node modelof the end-column carbon fiber reinforcement. Analysis of end-column reinforced carbonfiber cause beams, columns, plates of steel stress changes and cracks in concretesituations. Through the reinforcement nodes and ordinary nodes damage pattern, strength,ductility and other aspects of the contrast, the purpose is to study on seismic performanceof frame joints improvement effect and evaluation of end-column carbon fiber reinforcedthe effect of strong column weak-beam. The results show that: the carbon fiberreinforcement end column frame node can achieve a beam hinge mechanism and reflectthe strong column and weak beam principle. End-column reinforced with carbon fiberframe node is an effective reinforcement method.In addition, ordinary nodes and CFRP nodes are calculated under four kinds of theaxial compressive ratio, in order to study the different axial compression ratio of framenode strong column weak-beam effect. Through the reinforcement nodes and ordinarynodes comparatively study of the deformation, capacity, ductility, etc, analysis of theaxial compression ratio impact on the seismic performance. The results show that theeffect of axial compression ratio for CFRP reinforcement is significant; the node carryingcapacity of large axial compression ratio increased significantly, while the node of thelow axial compression ratio has little effect. Ductility improvement effect is very good,by contrast, the low axial compression ratio ductility increased more significantly.