Abstract—Many of the existing reinforced concrete structures throughout the world are in urgent need of strengthening, repair or reconstruction because of deterioration due to various factors like corrosion, lack of detailing, failure of bonding between beam-column joints, increase in service loads, etc., leading to cracking, spalling, loss of strength, deflection, etc., Direct observation of these damaged structures has shown that damage occurs usually at the beam-column joints, with failure in bending or shear, depending on geometry and reinforcement distribution type. .A nonlinear finite element analysis that is a simulation technique is used in this work to evaluate the effectiveness of retrofitting technique called “wrapping technique” for using carbon fibres (FRP) for strengthening of RC beam-column connections damaged due to various reasons. After carrying out a nonlinear finite element analysis of a reinforced concrete frame (Controlled Specimen) and reinforced concrete frame where carbon fibres are attached to the beam column joint portion in different patterns ,the measured response histories of the original and strengthened specimens are then subsequently compared. It is seen that the strengthened specimens exhibit significant increase in strength, stiffness, and stability as compared to controlled specimens. It appears that the proposed simulation technique will have a significant impact in engineering practice in the near future.
Index Terms—Carbon fibres, retrofitting, finite element analysis, beam column joints.
Tara Senis with National Institute of Technology, Agartala, India
Umesh Mishra is with National Institute of Technology, Agartala, India
Shubhalakshmi B. S. is with Dayanand Sagar College of Engineering, Bangalore, India
Cite: Tara Sen, Umesh Mishra and Shubhalakshmi B.S., "Nonlinear Finite Element Analysis of Retrofitting of RCC Beam Column Joint using CFRP," International Journal of Engineering and Technology vol. 2, no. 5, pp. 459-467, 2010.