Journal ArticleDOI
Prediction of Failure Load of R/C Beams Strengthened with FRP Plate Due to Stress Concentration at the Plate End
TLDR
In this paper, a method for calculating shear and normal stress concentration at the cutoff point of a composite plate is presented, which is based on linear elastic behavior of the materials.Abstract:
Epoxy-bonding a composite plate to the tension face is an effective technique for repair and retrofit of reinforced concrete beams. Experiments have indicated local failure of the concrete layer between the plate and longitudinal reinforcement in retrofitted beams. This mode of failure is caused by local stress concentration at the plate end as well as at the flexural cracks. This paper presents a method for calculating shear and normal stress concentration at the cutoff point of the plate. This method has been developed based on linear elastic behavior of the materials. The effect of the large flexural cracks along the beam has also been investigated. The model has been used to find the shear stress concentration at these cracks. The predicted results have been compared with both the finite element method and experimental results. The analytical models provide closed form solutions for calculating stresses at the plate ends that can easily be incorporated into design equations.read more
Citations
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Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures
Charles E. Bakis,Damian I. Kachlakev,Morris Schupack,P. N. Balaguru,Duane J. Gee,Vistasp M. Karbhari,David Scott,Craig A. Ballinger,T. Russell Gentry,Howard S. Kliger,Rajan Sen,Lawrence C. Bank,Arie Gerritse,James G. Korff,Mohsen Shahawy,Karl Gillette,Michael W. Lee,Carol K. Shield,Brahim Benmokrane,William J. Gold,Ibrahim M. Mahfouz,Khaled Soudki,Gregg J. Blaszak,Charles H. Goodspeed,Henry N. Marsh,R. Taerwe,Gordon L. Brown,F. Grace,Orange S. Marshall,Vicki L. Brown,Mark F. Green,Houssam Toutanji,Thomas I. Campbell,Mark E. Greenwood,Ayman Mosallam,Taketo Uomoto,Charles W. Dolan,Doug D. Gremel,Antoine E. Naaman,Miroslav Vadovic,Michael S. Guglielmo,Antonio Nanni,David R. Vanderpool,Rami M. Elhassan,Issam E. Harik,Kenneth W. Neale,Milan Vatovec,Salem S. Faza,Mark P. Henderson,Stephanie L. Walkup,Edward R. Fyfe,Bohdan N. Horeczko,Max L. Porter,David White,David M. Gale,Srinivasa L. Iyer,Sami H. Rizkalla,John P. Busel +57 more
TL;DR: The Emerging Technology Series as mentioned in this paper is a series of information and recommendations based on available test data, technical reports, limited experience with field applications, and the opinions of committee members, with a focus on the development and appropriate use of new and emerging technologies.
Journal ArticleDOI
Anchorage strength models for FRP and steel plates bonded to concrete
TL;DR: In this paper, the authors present a review of current anchorage strength models for both fiber-reinforced polymer (FRP) and steel-to-concrete bonded joints under shear and propose a new simple and rational model based on an existing fracture mechanics analysis and experimental observations.
Journal ArticleDOI
FRP-strengthened RC beams. I: review of debonding strength models
Scott T Smith,Jinguang Teng +1 more
TL;DR: A comprehensive review of existing plate debonding strength models is presented and each model is summarised and classified into one of the three categories based on the approach taken, and its theoretical basis clarified.
Journal ArticleDOI
Interfacial stresses in plated beams
Scott T Smith,Jinguang Teng +1 more
TL;DR: In this paper, the authors present a closed-form solution for debonding failure of reinforced concrete (RC) beams, which is intended for application to beams made of all kinds of materials bonded with a thin plate and numerical comparison between the existing solutions and the present new solution enable a clear appreciation of the effects of various parameters.
Journal ArticleDOI
Progress on understanding debonding problems in reinforced concrete and steel members strengthened using FRP composites
TL;DR: A review of the progress achieved in this area regarding applications to both reinforced concrete and steel members is provided in this paper, where the potential of brittle debonding failures is considered in the design process.