A Rate-sensitive Analysis Of R/C Beams Subjected To Blast Loads

TLDR: In this article, the behavior and response of structural reinforced concrete elements under severe blast loads are investigated numerically using the Timoshenko beam theory for the analysis of reinforced concrete beams, and a formally proposed rate-sensitive nonlinear material models are used to predict the dynamic property of structural steel and concrete under the blast loads.

Abstract: The behavior and response of structural reinforced concrete elements under severe blast loads are investigated numerically. The analytical approach utilizes the Timoshenko beam theory for the analysis of reinforced concrete beams. A formally proposed rate-sensitive nonlinear material models are used to predict the dynamic property of structural steel and concrete under the blast loads. Comparison between the rate-sensitive analysis and rate-in sensitive analysis in which the static strength of material is enhanced by a factor to roughly reflect the effect of strain-rate is given. The numerical results are also compared with the limited experimental data. It is demonstrated that the present consideration of the influence of strain-rate on the structural responses in design manuals leads to over conservative.