Unified bond stress-slip model for reinforced concrete

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

60 Scopus Citations
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  • Yu-Fei Wu
  • Xue-Mei Zhao


Original languageEnglish
Pages (from-to)1951-1962
Journal / PublicationJournal of Structural Engineering (United States)
Issue number11
Online published28 Sep 2012
Publication statusPublished - Nov 2013


Abstract Despite extensive investigations of bond stress versus slip modeling for RC structures, most existing bond stress-slip models are incomplete, discontinuous, and insufficiently accurate. These problems can cause nonconvergence and other difficulties in computational simulations of concrete structures that use bond-slip models. Through systematical analyses of an existing database of bond-slip behavior and data regressions, this work develops a unified bond stress-slip model that overcomes these difficulties and is suitable for numerical simulations. The model is given by a single and mathematically continuous equation that does not distinguish between plain and confined concrete or splitting and pullout failure because such judgments are arrived at automatically by evaluating the model parameters. Furthermore, the model outperforms the existing models in the precision of its predictions. © 2013 American Society of Civil Engineers.

Research Area(s)

  • Bond strength, Bond stress-slip model, Confinement effect, Reinforced concrete