Quasi-Plane-Hypothesis of Strain Coordination for RC Beam Strengthened with External-Bonded or Near-Surface Mounted Carbon Fiber Reinforced Plastic Strip

Zeng, Xian Tao; Ren, Zhen Hua

Paper Titles

Application Research on Transformed Section Method in Stress Redistribution Deduced by Creep in Concrete Beam Reinforced with FRP, p.35
Analyzing Effective Length Factor of OBS Members, p.40
Nonlinear Finite Element Analysis of the Bearing Capacity of a New Type of Column under Axial Load, p.45
Analysis on Pre-Stressed Friction Loss in Bending Channel under Contact Pressure Non-Uniform Distribution Hypothesis, p.49
Quasi-Plane-Hypothesis of Strain Coordination for RC Beam Strengthened with External-Bonded or Near-Surface Mounted Carbon Fiber Reinforced Plastic Strip, p.54
Analysis on Deviation Rectification and Reinforcement of Buildings, p.59
Research on the Construction Technology of High Brick Chimney, p.65
The Research on Strengthening Technique for Aged RC Beam, p.70
Block Shear Behaviours of Stainless Steel Channel Bolted Joints with Four Bolts, p.74

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Paper Title:

Quasi-Plane-Hypothesis of Strain Coordination for RC Beam Strengthened with External-Bonded or Near-Surface Mounted Carbon Fiber Reinforced Plastic Strip

Periodical	Advanced Materials Research (Volumes 255 - 260)
Main Theme	Advances in Civil Engineering
Edited by	Jingying Zhao
Pages	54-58
DOI	10.4028/www.scientific.net/AMR.255-260.54
Citation	Zhen Hua Ren et al., 2011, Advanced Materials Research, 255-260, 54
Online since	May, 2011
Authors	Zhen Hua Ren, Xian Tao Zeng
Keywords	Carbon Fiber Reinforced Plastic (CFRP), Concrete Beam, External-Bonded, Near-Surface Mounted, Quasi-Plane-Hypothesis, Strain Coordination, Strengthening
Price	US$ 28,-

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Abstract

Rehabilitation of existing structures with fiber reinforced plastics (FRP) has been growing in popularity because they offer superior performance in terms of resistance to corrosion and high stiffness-to-weight ratio. This paper presents strain coordination results of (two groups)15 reinforced concrete beams strengthened with different methods including external-bonded and near-surface mounted carbon FRP strip in order to investigate the strain coordination of CFRP and steel rebar of RC beam. Because there is relative slipping between RC beam and CFRP, the strain of CFRP and steel rebar of RC beam satisfies the quasi-plane-hypothesis, that is, the strain of longitudinal fiber that parallels to the neutral axis of plated beam within the scope of effective height (h₀) of the cross section is in direct proportion to the distance from the fiber to the neutral axis, the strain of FRP and steel rebar satisfies the equation: , the value of is equal to 1.1~1.3 according to the test results.