Modelling and numerical simulation of high strength fibre reinforced concrete corbels

Abstract

In the present study, new constitutive models for high strength steel fibre reinforced concrete (HSSFRC) have been formulated by means of a regression analysis of many experimental data (from literature) by using SPSS-statistical program. This proposed constitutive models have been employed for formulating the material finite element models to study the behaviour of HSSFRC corbels. The corbel is considered in a plane stress state and eight-node Serendipity element has been employed to represent the concrete, a strain hardening plasticity approach is used to model the compression behaviour, the yield condition is formulated in terms of the first two stress invariants, a tensile strength criterion is used to predict crack initiation. The numerical results of proposed material models and corbels behaviour compared with published experimental results showed good agreement.