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Study on Retrofitting of Concrete Beam Structure using Carbon Fibre Reinforced Polymer (CFRP)

Author(s):

Nagendra Dhooper , Lecturer at Goverment polytechnic college,sironj mp

Keywords:

FEM, FEA, CFRP

Abstract

Recent earthquakes have demonstrated that most of the reinforced concrete structures were severely damaged during earthquakes and they need major repair works. Beam-column structures, being the lateral and vertical load resisting members in reinforced concrete structures are particularly vulnerable to failures during earthquakes. The existing reinforced concrete beam column structures, which are not designed as per code IS 13920:1993 must be strengthened since they do not meet the ductility requirements. The Finite Element Method (FEM) has become a staple for predicting and simulating the physical behaviour of complex engineering systems. The commercial finite element analysis (FEA) programs have gained common acceptance among engineers in industry and researchers. The details of the finite element analysis of beam-column joints retrofitted with carbon fiber reinforced polymer sheets (CFRP) carried out using the package ANSYS are presented here. Four exterior reinforced concrete beam-column structures were modelled using ANSYS package. The first beam is the control specimen. This had reinforcement as per code IS 456:2000. Other beams are retrofitted with one layer, two layers and three layers of Carbon Fibre Reinforced Polymer (CFRP) respectively. During analysis both ends of beam are simply supported and concentrated load is applied at the midpoint, but in case of column, bottom end is fixed and other end is free. An axial load is applied at the top of the column. This performance is compared with the concrete beam-column structure which do not layered with Carbone Fibre reinforced Polymer (CFRP) sheet.

Other Details

Paper ID: IJSRDV5I60558
Published in: Volume : 5, Issue : 6
Publication Date: 01/09/2017
Page(s): 1110-1114

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