Abstract
In order to analyze the contact stresses between dowels and surrounding concrete in the dowel-jointed cement concrete pavement, the 3-D finite element model is used to simulate the stress concentration in concrete around the dowel bars under traffic loading. The stress and strain responses on the concrete surface have been calculated and they are also verified with self-design full-scale experiments. Results show that the strain data from the numerical simulation agrees well with the full-scale experiment. As a result, the research indicates that the 3-D finite element model is an efficient and accurate method to calculate the interaction characteristics between dowel bars and surrounding concrete. Besides, the high press stress concentration on the concrete up dowels and the tensile stress concentration on the concrete besides dowels will cause the initial crack development in the concrete material surrounding the dowels, which is the main reason leading to the dowel bar deterioration. In this paper, a more concrete and detailed numerical analysis method will be provided to analysis the stresses concentration at steel-concrete interface in the concrete structure.
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