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Article Dans Une Revue Engineering Structures Année : 2011

Modeling of steel and concrete strains between primary cracks for the prediction of cover-controlled cracking in RC-beams

Résumé

After cracking, the intact concrete between two consecutive primary cracks remains elastic and the maximum concrete stress is less than the tensile strength of concrete. However, under increasing loading, cover-controlled cracks occur at the steel–concrete interface causing a loss of bond and hence a loss of tension stiffness. The cover-controlled cracks are internal concrete cracks that initiate at steel rib location and are contained within the concrete cover. In this paper, steel and concrete strain distribution between two consecutive primary cracks are modeled based on a linear assumed distribution of the bond stress at the steel–concrete interface. The accurate calculation of the tensile concrete strain allows introducing new criteria for cover-control cracking initiation based on a peak value of steel stress calculated at crack location.

Domaines

Génie civil

Dates et versions

hal-02326035 , version 1 (22-10-2019)

Identifiants

Citer

Arnaud Castel, Raoul François. Modeling of steel and concrete strains between primary cracks for the prediction of cover-controlled cracking in RC-beams. Engineering Structures, 2011, 33 (12), pp.3668-3675. ⟨10.1016/j.engstruct.2011.08.001⟩. ⟨hal-02326035⟩
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