n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Prediction of the debonding / slip load of composite deck slabs using fracture mechanics : technical paper
|Article Title||Prediction of the debonding / slip load of composite deck slabs using fracture mechanics : technical paper|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese|
|Affiliations||1 National Home Builders Registration Council and 2 University of Johannesburg|
|Publication Date||Oct 2012|
|Pages||112 - 116|
|Keyword(s)||Composite decks, Debonding, Fatigue, Linear elastic fracture mechanics and Shear bond failure|
The aim of this paper is to develop equations that can be used to predict the load at which debonding or slip occurs in composite deck slabs, failing as a result of shear bond rupture. Debonding is the separation of the bonded steel plate from the concrete. The expressions are based on end-slip of the shear span occurring prior to ultimate load. Shear bond failure is considered to be a result of breakdown of mechanical and frictional resistance force between the steel and the concrete interface. Linear elastic fracture mechanics (LEFM) is assumed and the eccentric axial force transmitted by the steel deck is calculated using rotational congruence. The theoretical debonding load results are found to be comparable with experimental results, and to be of use in formulating the response of composite slabs when subjected to fatigue load.
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