Enhance Structural Strength and Ductility for Blast Load Mitigation

Abstract

The study focuses on understanding the behaviour of structures under blast stress to enhance their
resilience against explosive events. Explosions, whether caused by bombs or gas-chemical
reactions, can severely damage buildings. This damage includes the destruction of external and
internal structural frameworks, collapsing walls, shattering windows, and disabling life-safety
systems. Occupants face risks such as direct impact from the blast, structure collapse, flying
debris, fire, and smoke. Indirect effects can compound the danger, hindering or preventing rapid
evacuation. Major disasters induced by explosions impose stress conditions beyond the original
design loads of structures. This dynamic aspect makes it challenging to ensure structural integrity
and occupant safety in the event of an explosion. Over the past three decades, efforts have been
made to develop structural analysis and design methods that can withstand blast loads. These
approaches aim to mitigate the impact of explosions and protect structures and occupants. The
study aims to understand how armoured structures behave under blast stress, to design structures
capable of responding effectively to explosions. The study contributes to the development of
strategies for designing blast-resistant structures, which are essential for ensuring the safety and
resilience of buildings in areas prone to security threats or industrial accidents. In this study, we
consider RCC structure and pre-stress structure and find out their behaviour and we got pre-stress
structure is more capable than RCC structure to withstand the blast load. These analyses have
been done in Staad Pro software with different parameters such as bending moment, share force
and displacement.