Mobile anti-vehicle barrier made of high-performance fibre-reinforced concrete. Issue 11 (August 2021)

• Record Type: Journal Article
• Authors: Konrád, Petr; Mára, Michal; Fornůsek, Jindřich; Nouzovský, Luboš; Zatloukal, Jan; Kohout, Tomáš; Vrtal, Pavel; Sovják, Radoslav; Konvalinka, Petr
• Is Part Of: Advances in structural engineering. Volume 24:Issue 11(2021)
• Page Start: 2364
• Page End: 2374
• Publication Date: 2021-08
• Subjects: barrier -- concrete -- crash -- fibre -- HPFRC -- impact -- mobile; Structural engineering -- Periodicals; Construction, Technique de la; Structural engineering; Periodicals; 624.1
• DOI: 10.1177/1369433221997728
• Languages: English
• ISSNs: 1369-4332

Abstract

The article presents a mobile anti-vehicle barrier created from a high-performance fibre-reinforced concrete, which resembles a historical design of the Czech Hedgehog barrier. The performance of this design when subjected to a moderate velocity vehicle impact was evaluated. A preliminary crash test provided basic data to perform an optimisation of the design using numerical simulations conducted in LS-DYNA. Several key observations were made regarding the crucial role of the barrier-surface interactions and overall barrier behaviour. Based on the simulations, improved geometry of the barrier was proposed and subjected to more full-scale crash tests with various barrier placements. The improved barrier design was able to stop an ordinary road vehicle weighing 1300 kg moving with a velocity of 48 km/h while retaining beneficial characteristics, most importantly low weight.