FE modeling of inelastic behavior of reinforced high-strength concrete continuous beams
作者： Tiejiong Lou , Sergio M.R. Lopes , Adelino V. Lopes
DOI: 10.12989/SEM.2014.49.3.373
关键词: Materials science 、 Composite material 、 Timoshenko beam theory 、 Structural engineering 、 Beam (structure) 、 Stiffness 、 Neutral axis 、 Flexural strength 、 Reinforcement 、 Ultimate tensile strength 、 Moment redistribution
摘要: A finite element model for predicting the entire nonlinear behavior of reinforced high-strength concrete continuous beams is described. The based on moment-curvature relations pre-generated through section analysis, and formulated utilizing Timoshenko beam theory. validity verified with experimental results a series specimens. Some important aspects having different tensile reinforcement ratios are evaluated. In addition, parametric study carried out practical dimensions to examine effect degree moment redistribution. analysis shows that in affects significantly member behavior, namely, flexural cracking stiffness, ductility, neutral axis depth redistribution moments. It also found relation between at critical negative positive regions has great influence redistribution, while importance this factor neglected various codes.
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