Performance based investigation on the construction of anti-blast water wall

Abstract Improvised explosive device (IED) such as roadside bomb may be used in terrorist actions, which possess a threat to public safety. To mitigate the casualties and economic loss it might cause, protective technique has drawn more and more attention from the research and engineering community. Anti-blast water wall as one of water barricades, might be effective in mitigating the explosion effect due to its advantages of low cost and easy to construct etc. In this study, nine in-situ experiments were carried out in the explosion chamber to investigate the mitigating efficiency of explosion by using anti-blast water wall. Numerical models were also developed to simulate the testing by using commercial software LS-DYNA. The numerical model was calibrated and verified by the overpressure time histories recorded in the tests. In addition, parametric studies were carried out to investigate the influences of water/charge distance and height of water wall on the blast mitigation performance. Empirical formulae were derived based on the experimental and numerical results. Based on the equivalent static load method, design principles were proposed for the optimization of anti-blast water wall against blast loadings.

[1]  Robert D Willcox,et al.  Water as a Blast Shock Suppressant , 1998 .

[2]  M. Y. H. Bangash.  Impact and explosion : analysis and design , 1993 .

[3]  H. Hao,et al.  Numerical simulation of blast wave interaction with structure columns , 2007 .

[4]  A D Resnyansky,et al.  Experimental Study of Blast Mitigation in a Water Mist , 2006 .

[5]  K. C. Hung,et al.  Numerical study of water mitigation effects on blast wave , 2005 .

[6]  D. Ambrosini,et al.  Blast load assessment using hydrocodes , 2006 .

[7]  Anders Carlberg,et al.  Small Scale Tests on Mitigation Effects of Water in a Model of the KLOTZ Club Tunnel in Alvdalen , 1996 .

[8]  Michael A. Polcyn,et al.  Testing and Analysis Done in Support of the Development of a Container for On-Site Weapon Demilitarization , 1996 .

[9]  Zhao Han.  Water Mitigation Effects on Explosions in Confined Chambers , 2002 .

[10]  K. Yeo,et al.  Modeling Mitigation Effects of Watershield on Shock Waves , 1998 .

[11]  A. L. Furno,et al.  Coal Dust and Gas Explosion Suppression by Barriers , 1987 .

[12]  B. M. Dobratz,et al.  LLNL Explosives Handbook, Properties of Chemical Explosives and Explosive Simulants , 1985 .

[13]  Theodor Krauthammer,et al.  Mesh, gravity and load effects on finite element simulations of blast loaded reinforced concrete structures , 1997 .

[14]  Paul Phillips,et al.  Evaluation of the blast mitigating effects of fluid containers , 2015 .

[15]  Zhao Han.  Water Effects on Shock Wave Delay in Free Fields , 2001 .

[16]  Guirong Liu,et al.  Investigations into water mitigation using a meshless particle method , 2002 .

[17]  Guk-Rwang Won.  American Society for Testing and Materials , 1987 .

[18]  Hong Hao,et al.  Responses of Masonry Infill Walls Retrofitted with CFRP, Steel Wire Mesh and Laminated Bars to Blast Loadings , 2014 .

[19]  Qin Fang,et al.  AN IMPROVED ANALYTICAL METHOD FOR RESTRAINED RC STRUCTURES SUBJECTED TO STATIC AND DYNAMIC LOADS , 2014 .

[20]  Gui-Rong Liu,et al.  A comparison of simulation’s results with experiment on water mitigation of an explosion , 1999 .

[21]  Philippe Chabin,et al.  Blast Wave Mitigation by Water , 1998 .

[22]  J. K. Richmond,et al.  Suppression of coal-dust explosions by passive water barriers in a single-entry mine , 1974 .

[23]  Niels Olhoff,et al.  Minimization of vibration power transmission from rotating machinery to a flexible supporting plate , 2014 .

[24]  Robert E. Crawford,et al.  The Air Force manual for design and analysis of hardened structures. Final report Jun 71-May 74 , 1974 .

[25]  Hong Hao,et al.  Prediction of airblast loads on structures behind a protective barrier , 2008 .

[26]  T. C. Chapman,et al.  Blast wave simulation using AUTODYN2D: A parametric study , 1995 .

[27]  G. R. Abrahamson,et al.  The dynamics of explosion and its use , 1979 .

[28]  W A Keenan,et al.  Mitigation of Confined Explosion Effects by Placing Water in Proximity of Explosives , 1992 .