International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 07 Issue: 03 | Mar 2020
p-ISSN: 2395-0072
www.irjet.net
MODELLING ANALYSIS AND RETROFITTING OF FLANGED BEAMS WITH GFRP CONFINEMENT Bharath Kumar M1, Ranjith Singh J2, Karthick B3 1PG
Student, Dept. of Structural Engg, CSI College of Engineering, Tamil Nadu, India, Professor, Dept of Structural Engg, CSI College of Engineering, Tamil Nadu, India, 3Head of the Department, Dept. of Structural Engg, CSI College of Engineering, Tamil Nadu, India, 2Associate
---------------------------------------------------------------------------------***----------------------------------------------------------------------------Abstract: In order to improve the quality of the reinforced fatigue loading) and durability Other factors include concrete structure it is better to repair or upgrade the convenience in mass production with high quality control structure by retrofitting. Retrofitting is one of the best and relative economy. The most commonly used fibers in options to make an existing inadequate building safe against the production of FRP are glass, carbon and aramid. These future probable earthquake or other environmental forces. fibers are usually bonded together with the help of such Retrofitting is the modification of existing structure to make binding agents as resins and cements and are used to them more resistance to seismic action, motion of ground produce rods, strands, sheets, mats and pultruded profiles. and failure of soil due to earthquake or other natural These find very large application in load bearing calamities such as tornadoes cyclones and winds with high structures, repair and rehabilitation of existing structures. velocity caused by thunder storm, snow fall, hailstorms, etc. The properties of gfrp are shown in Table 1. The analyses is done to investigate the improvements in the structural behavior of the RC flanged beams retrofitted with Table-1: Properties of GFRP types of FRP such as glass fibers And Steel Plates. The project aims in the performance of 3D RC Flanged beam, With Material Tensile Tensile Laminate different types of retrofitting in shear deficient beams using Strength Modulus Thickness Ansys (Structural static) software. And the results are (MPa) (GPa) (mm) compared. Glass Fiber 3240 72.4 0.36 Epoxy resin 72.4 3.18 KEY WORDS: GFRP, T BEAMS, RETROFITTING GFRP 575 26.1 1.3 1 .INTRODUCTION 2.1 Why GFRP? One High strength non-metallic fibers, such as carbon, glass and aramid fibers, encapsulated in a polymer GFRP has a very high strength to weight ratio. And matrix in the form of wires, bars, strands or grids have Lightweight, Low weights of 2 to 4 lbs. per square foot shown great potentials as reinforcement for concrete, means faster installation, less structural framing, and particularly where durability is of main concern. It is lower shipping costs and is good Resistance towards salt commonly known as fiber reinforced polymer or, in short, water, chemicals, and the environment - unaffected by acid FRP. Despite being a recent development, numerous rain, salts, and most chemicals and Seamless Construction, investigations have already been reported in the literature Domes and cupolas are resined together to form a oneon various aspects of its structural use. Fiber-reinforced piece, watertight structure. These are Able to Mold polymers (FRP) have been used for structural Complex Shapes Virtually any shape or form can be reinforcement materials and also for bridge construction molded. And is Low Maintenance Research shows no loss materials such as bridge decks and materials. of laminate properties after 30 years. They have Durability Stromberg GFRP stood up to category 5 hurricane Floyd 2. GFRP with no damage, while nearby structures were destroyed. Fiber Reinforced Polymer (FRP) materials are well recognized as a vital constituent of the modern concrete structures. The superiority of the FRP materials, in comparison with other conventional building materials like timber, steel and reinforced concrete, lies in its improved structural performance, in terms of stability, stiffness, strength (including improved resistance to
Š 2020, IRJET
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Table-2: Properties of concrete Description Design Mix Ratio W/C Ratio Average Compressive Strength of Concrete Cubes
M 20 grade (m) 1:1.76:3.14 0.45 28.75
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