Author : Urjal Das and Ankit Pal

When a bomb blast occurs in and around the buildings can cause the calamitous damage to the buildings superstructure as well as the sub structure such as the collapsing of walls, cracks on beams, columns, slab and shutting down all the crucial life saving system. Explosions have two different effects i.e. Direct effects that consists of collapse, leftover materials or parts of buildings, fire and smolder etc. and the circumlocutory effects consists of inhibit or stop from timely evacuation. By combining these two effects additionally bringing up more causalities. In addition, when the gas-chemical blast occurs it gave us the most ruinous results i.e. dynamic load is much greater than that of the original design loads. So, to counteract this ruinous results of the gas-chemical blast, much more hard work have been prepared throughout the previous few decades to extend methods of structural analysis and design to oppose the blast loads. Complete understanding of blast phenomenon and also the dynamic response of all structural elements are both mostly required to study and design the structure under blast load. This study gives us all the informative overview of explosions effects on the structure when subjected to the blast loading by comparing the three different models with two different blast loads and also the two different standoff distance.

Keywords: Blast load, Deflection, Stress, Strain, Standoff Distance, TNT.

Article published in International Journal of Current Engineering and Technology, Vol.10, No.3 (May/June 2020)