A kinematic approach for the complete shear behavior of short FRC coupling beams

Boyan I. Mihaylov, Jian Liu, Rémy Lobet

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

7 Citations (Scopus)

Abstract

Short coupling beams are susceptible to brittle shear failures that need to be suppressed with dense transverse and diagonal reinforcement. To reduce the amount of shear reinforcement and improve the service behavior, researchers have proposed a solution with steel fiber-reinforced concrete (FRC). However, while this solution is promising, there are no sufficiently simple mechanical models capable of describing the complete shear behavior of short FRC coupling beams. This paper proposes such a model based on first principles: kinematics, equilibrium, and constitutive relationships for the mechanism of shear resistance. The model is compared with tests from the literature and with a significantly more complex finite element model (FEM). It is shown that, while the proposed kinematic approach requires a straightforward input and negligible time for computations, it also provides a similar (or better) accuracy as the FEM with excellent shear strength predictions.

Original languageEnglish
Title of host publicationAmerican Concrete Institute, ACI Special Publication
EditorsDenis Mitchell, Abdeldjelil Belarbi
PublisherAmerican Concrete Institute
Pages121-140
Number of pages20
EditionSP 328
ISBN (Electronic)9781510882300
Publication statusPublished - 2018
Externally publishedYes
EventSymposium on Shear in Structural Concrete - American Concrete Institute Convention and Exposition 2018 - Salt Lake City, United States
Duration: 25 Mar 201829 Mar 2018

Publication series

NameAmerican Concrete Institute, ACI Special Publication
NumberSP 328
Volume2018-March
ISSN (Print)0193-2527

Conference

ConferenceSymposium on Shear in Structural Concrete - American Concrete Institute Convention and Exposition 2018
Country/TerritoryUnited States
CitySalt Lake City
Period25/03/1829/03/18

Keywords

  • Coupling beams
  • Deformation patterns
  • Fiber-reinforced concrete
  • Kinematic model
  • Shear behavior

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