Finite element modelling of reinforcement with bond

This paper presents an efficient numerical model for simulating the bond between reinforcing bars and concrete. It is based on the one-dimensional geometry of reinforcing bars, and it considers interface surface properties. In spite of its relative simplicity, it allows the application of the same physical models as in the case of a full surface interface. An arbitrary bond-slip relationship can be implemented within the model. Four sample analyses are presented: reinforcement bar pull-out experiment, an example of a beam collapsing due to shear failure, an analysis of the shear strength of pre-stressed hollow core slabs and an assessment of serviceability of a pre-stressed concrete slab in the newly built ice hockey arena in Prague.