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Experimental and Analytical Investigation On Beam Column Joint Strengthening With GFRP Sheet
The common regions of intersecting elements are called joints. In Reinforced concrete buildings, the portion of columns that are common to beam at their intersections are called beam-column joints. Shear failure of beam-column joints is identified as the principal cause of collapse of many moment-resisting frame buildings during recent earthquakes. In this project, the efficiency and effectiveness of Glass Fiber-Reinforced Polymer (GFRP) sheets which increase the shear strength and ductility of seismically deficient beam-column joints have been studied. A brief review of literature has been carried out in following topics, behaviour of beam column joints under earthquake loading, effect of different types of fiber reinforced polymers, finite element modeling of fibre reinforced concrete. In this project, experimental study as well as analytical study has been done. In this project, two beam column joint specimens have been casted. The first specimen is considered as control specimen which is casted without GFRP wrapping. In the second specimen, before concreting, GFRP sheets pasted by epoxy adhesive are wrapped initially with reinforcement. The two specimens are checked for its load carrying capacity, load-deflection behaviour and cracking pattern. The comparison of results shows that GFRP sheets are very effective in improving shear resistance and deformation capacity of the corner beam-column joints and delaying their stiffness degradation. The corner as well as exterior beam-column joint is analyzed by using Ansys software with varying stiffness of beam-column joint. The behavior of exterior and corner beam-column joint subjected to cyclic loading is different. The results which will be obtained from the experiment and by software analysis will be characterized by plotting various graphs like load vs. deflection (deformations), Maximum stress and Stiffness variations. The failure modes and crack patterns are noted to get better understanding on the performance of beam column joints strengthened with GFRP sheets.
Keywords- GFRP Sheets, Ductility, Strength, Stiffness
Unique Identification Number - IJEDR1702283Page Number(s) - 1803-1813Pubished in - Volume 5 | Issue 2 | June 2017DOI (Digital Object Identifier) -    Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
S.Bharathi,  Mrs.M.Nithya,   "Experimental and Analytical Investigation On Beam Column Joint Strengthening With GFRP Sheet"
, International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.1803-1813, June 2017, Available at :http://www.ijedr.org/papers/IJEDR1702283.pdf