BLAST RESISTANT DESIGN OF STRUCTURE

Sajal Verma, Mainak Choudhury, Purnachandra Saha

Abstract: Blast is a wave of highly compressed air spreading outwards from an explosion. Blast attacks by terrorists, and domestic accidents like LPG gas cylinder bursts have become a concern due to their increased frequency and fatal effect on lives and properties. So it has been a paramount importance to design structures which can resist blast effect better, so that destruction is controlled in a better way. In this paper an attempt is made to review the various methods applied to different types of structure, such as, masonry, concrete, steel and the effectiveness of each method. The Indian code does not have enough provisions for dealing with blast load, so it is important to study the properties of blast loading as dynamic loading. The various methods discussed are FRP retrofit technique in masonry walls, unidirectional passive dampers in steel structures, varying core density in sandwich structures and composites materials. it is observed that FRP retrofit technique in blast protection and steel structure with passive dampers are effective as blast resistance technique since no visible damage, crack, or debonding occurred in any of the walls and steel structure as the internal energy is mainly dissipated by the dampers.

Keywords: Blast loading; Fiber reinforced polymers; Masonry; Damper; Sandwich structures; Blast protection

DOI: https://doi.org/10.15623/ijret.2015.0425010