Abstract
In order to investigate the splitting crack patterns due to the wedge action and dowel action of deformed bars and estimate the splitting bond strength, the two-dimensional non-linear finite element analysis was carried out on reinforced concrete members. The wedge force or dowel force was replaced by uniform or non-uniform internal pressure, respectively, and the subject of analysis was limited to concrete only. Concrete cover and bar spacing were selected as analytical parameters.The analytical results show that three splitting crack patterns proposed by Jirsa and Morita: V-notch, side splitting and corner splitting type are also observed by this analysis, and that the dowel action aggravate especially the side splitting failure. On the basis of the analytical results, a tentative equation to estimate the splitting bond strength was proposed.
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