The Reduction Of Peak Overpressure Using
Concrete Blast Barriers
Author(s)
R. Hájek & M. Foglar
Abstract
Due to the rise of terroristic attack threat, public buildings should be designed to
ensure as much safety of its visitors as possible. This paper is focused mainly on
understanding of blast wave dynamics in interaction with the solid building and
its equipment. Especially pressure wave reflections inside a confined space are of
particular interest. The effect of atmospheric overpressure on the human body is
also studied. A method for computer modelling of explosive events was
developed using LS-DYNA software. The FEM model was calibrated based on
experimental data. Multiple arrangements and shapes of concrete barriers were
then proposed for faster energy dissipation and effective reduction of the damage
and injuries caused by the explosion. The most promising arrangements
according to FEM modelling results were then selected for the experimental
program. This paper also includes a comparison of the experimental data and
results of numerical FEM analysis. The accuracy of the FEM model is then
discussed. Thanks to use of TNT explosive charge, the experimental results can
also be compared to other blast experiments without barriers. The effectiveness
of different barrier arrangements are compared and evaluated.
Keywords: explosion, air blast wave, overpressure, barrier.
Keywords
explosion, air blast wave, overpressure, barrier.
Related Book
Other papers in this volume
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