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.
AskariBNykyforchynAKlügelJ-U, et al. (2019) Analysis of the consequences of an airplane crash on an underground radioactive waste storage building. Nuclear Engineering and Design352: 110149.
2.
BaragettiSArcieriEV (2019a) A new mobile anti-ramming system. In: ASME 2019 international mechanical engineering congress and exposition. Volume 14: Design, systems, and complexity, Salt Lake City, Utah, 11–14 November 2019. American Society of Mechanical Engineers.
3.
BaragettiSArcieriEV (2019b) Study on a new mobile anti-terror barrier. Procedia Structural Integrity24: 91–100.
4.
BažantováZKolářKKonvalinkaP, et al. (2016a) Controlled hardening of silicate binders for the optimization of high performance composites. In: Key engineering materials, December2016, pp.281–285. Bäch, Switzerland: Trans Tech Publications Ltd.
5.
BažantováZKolářKKonvalinkaP, et al. (2016b) Multi-functional high-performance cement based composite. In: Key engineering materials, January2016, vol. 677, pp.53–56. Bäch, Switzerland: Trans Tech Publications.
6.
BelskiIChongTTBelskiA, et al. (2012) TRIZ wins a tender: Designing a crash barrier. In: TRIZ Future 2012, Lisbon, Portugal.
7.
BuckleyN (2004) The design and testing of a portable vehicle crash barrier. In: 38th annual 2004 international Carnahan conference on security technology, Albuquerque, NM, 11–14 October 2004, pp.47–55. New York: IEEE.
8.
ChenLXiaoYXiaoG, et al. (2015) Test and numerical simulation of truck collision with anti-ram bollards. International Journal of Impact Engineering75: 30–39.
9.
DinnellaNChiapponeSGuerrieriM (2020) The innovative “NDBA” concrete safety barrier able to withstand two subsequent TB81 crash tests. Engineering Failure Analysis115: 104660.
10.
DubánekMMinaříkPLakosilJ (2008) Utajená obrana železné opony: Československé opevnění 1945–1964 (in Czech). Prague: Mladá fronta a.s.
HuB (2017) An assessment of current maximum impact force models for anti-ram bollard systems subjected to truck impact. International Journal of Protective Structures8(3): 368–383.
13.
HuBLiGSunJ (2014) Numerical investigation of K4-rating shallow footing fixed anti-ram bollard system subjected to vehicle impact. International Journal of Impact Engineering63: 72–87.
KonrádPSovjákR (2019) Experimental procedure for determination of the energy dissipation capacity of ultra-high-performance fibre-reinforced concrete under localized impact loading. International Journal of Protective Structures10(2): 251–265.
16.
KovácsZ (2016) Barriers for physical perimeter protection of military facilities against vehicle born improvised explosive devices. Vojenské Reflexie11(1): 86–99.
17.
KravanjaSSovjákRKonrádP, et al. (2017) Penetration resistance of semi-infinite UHPFRC targets with various fiber volume fractions against projectile impact. Procedia Engineering193: 112–119.
18.
LakosilJSvobodaT (2017) Československé opevnění 1938 - Velká obrazová kniha (in Czech), 1st edn. Prague: Mladá fronta a.s.
19.
LovichováRMáraMFornůsekJ (2017) Projectile impact resistance of UHPFRC structures for various methods of fresh mixture placement. Procedia Engineering193: 80–87.
20.
MáraMKonrádPFornůsekJ, et al. (2020) Development of mobile road barrier made of ultra-high-performance fibre-reinforced concrete. Materials Today: Proceedings32: 162–167.
21.
SovjákRShanbhagDKonrádP, et al. (2017) Response of thin UHPFRC targets with various fibre volume fractions to deformable projectile impact. Procedia Engineering193: 3–10.
