FraMCoS 9 2016 Berkeley, California, USA

Prediction of Analytical Bond Strength of Lap Splices in Tension

A significant experimental and analytical evidence of anchorage bond of ribbed bars under monotonic and cyclic loading has been generated from various sources. While additional test data have resulted in an increase in the accuracy of current statistical approaches, splice…

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Year 2016
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Abstract

A significant experimental and analytical evidence of anchorage bond of ribbed bars under monotonic and cyclic loading has been generated from various sources. While additional test data have resulted in an increase in the accuracy of current statistical approaches, splice strength remains not fully understood. A number of factors such as type of rebar and concrete, state of stress in materials, concrete cover, spacing of rebars, number of layers of rebars, direction of casting, position of bar, Poisson’s effect, diameter of rebar, cyclic loading, bar geometry and rib geometry influence the bond strength. The objective is to develop a model that predicts the bond strength incorporating all influencing parameters for design applications along with size effect of rebar. Mechanics based standard splice strength model has been proposed from a large database. Overall, it provides specifications in the codes of practice, and modeling of bond of lap splices in RC structures and hence the development or bond length.