Numerical investigation of a new structural configuration of a concrete barrier wall under the effect of blast loads

International Journal of Advanced Structural Engineering

دوره 11، شماره 1، آبان 2019   

نوع مقاله: Original Article

شناسه دیجیتال (DOI): 10.30495/ijase.2019.705776

نویسندگان

Ahmed K. Taha¹؛ Zhengguo Gao¹؛ Dahai Huang¹؛ M. S. Zahran²

¹School of Transportation Science and Engineering, Beihang University (Beijing University of Aeronautics and Astronautics), Beijing 100191, People’s Republic of China

²Department of Civil Engineering, Military Technical College, cairo, Egypt

چکیده

Abstract
In this study, a non-linear three-dimensional hydrocode numerical simulation was carried out using AUTODYN-3D, which
is an extensive code dealing with explosion problems. A high explosive material (comp-B) is blasted against several concrete
wall barriers. The model was first validated using referenced experimental tests and has shown good results. Several numerical
models were carried out to study the effect of changing the shape of wall barrier from flat to convex curve and concave
curve, and also investigated the effect of changing the angle of curvature. The results showed that changing the shape of a
wall barrier from flat to convex curve has the best performance in mitigating the effect of blast waves. It is also concluded
that convex walls with 60° angle of curvature have the best performance compared to other barrier walls.

کلیدواژه‌ها

Concrete · Explosion · Composition B · Wall barrier · Numerical simulation · Blast wave