Effect of Blast Load on Soft Storey Building

Abstract

The number of terrorist activity have increased concern about safety of building. So, it’s became need to design building for blast load. This study compares the response of 3 dimensional soft storey building with Bare frame under blast loading. To design and analyse a structure for blast loading require a deep understanding of blast phenomena. The blast load was calculated by using IS code. This paper present numerical example of fictive structure exposed to blast load. Effect of variable blast source weight is calculated for 30m standoff distance. The blast load is analytically determined as pressure-time history and numerical model was created in SAP2000 for frame and soft storey building. The result shows that due to infill there is significant reduction in displacement, velocity and acceleration. The influence of blast load in terms of peak deflection, velocity and acceleration is determined and compared.