In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Reinforced concrete beams strengthened with FRP. Shear design using the strut-and-tie mechanism and genetic algorithms
Author(s): Perera Velamazán, R.; Vique García, J.; Arteaga Iriarte, A.; de Diego Villalón, A.
Appears on pages(s): 65 - 83
Keywords: Shear strengthening, FRP, strut-and-tie mechanism, genetic algorithms, design, concrete.
Abstract:The use of composite materials to strengthen reinforced concrete structures has become increasingly popular in recent years. Three types of strengthening - bending, confinement and shear - have been addressed in the design guides published to date, although the third has been insufficiently developed. Further theoretical and experimental study is needed to obtain a fuller understanding of the mechanisms involved. In the theoretical study described in this paper, a strut and tie-based model was developed to determine the shear strength of reinforced concrete beams strengthened with fibre-reinforced polymer (FRP) bonded plates The contribution made by the concrete is reinforced by the effect of the tie, i.e., account is taken of the contributions of both the internal and external reinforcement, corresponding to the optimal strut-and-tie resisting mechanism. The optimal strength mechanism is found by solving an optimization problem with gene tic algorithms that define the optimal strut and tie geometry. The model proposed was validated by estimating the shear strength of experimentally tested FRP-strengthened beams. Model predictions were also compared to the predictions directly obtained by applying the methods set out in a number of concrete standards and design guides on FRP strengthening.
ACI International Partner, ACHE Spain, International Partner Access.
View Resource »