Finite Element Analysis of Increasing Column Section and CFRP Reinforcement Method under Different Axial Compression Ratio

[摘要] Eight less stirrups in the core area frame joints are simulated by ABAQUS finite element numerical software. The composite reinforcement method is strengthened with carbon fiber and increasing column section, the axial compression ratio of reinforced specimens is 0.3, 0.45 and 0.6 respectively. The results of the load-displacement curve, ductility and stiffness are analyzed, and it is found that the different axial compression ratio has great influence on the bearing capacity of increasing column section strengthening method, and has little influence on carbon fiber reinforcement method. The different strengthening schemes improve the ultimate bearing capacity and ductility of frame joints in a certain extent, composite reinforcement joints strengthening method to improve the most significant, followed by increasing column section, reinforcement method of carbon fiber reinforced joints to increase the minimum.

[发布机构] School of Civil Engineering, Shenyang Jianzhu University, Shenyang; 110168, China^1

[效力级别] 机械制造 [学科分类] 材料科学（综合）

[关键词] Carbon fiber reinforced;Cfrp reinforcements;Composite reinforcement;Load-displacement curve;Numerical software;Reinforcement method;Strengthening methods;Ultimate bearing capacity