Abstract:
: In general, two different types of loads act on structure artificial and natural loads. Loads due to some material comes in artificial and wind, earthquakes are neutral load, but in this modern world blast load also consider. Blast load applied sudden and extreme on structure, cause of structure can be vary depending on situation either it is gas cylinder blast, chemical blast or terrorist activity and many more. During the explosion blast waves propagate rapidly and exert high-pressure of building surface that could damage the structural elements and lead to structural failure. The primary objective is to establish correlations between floor shape and blast resistance, offering insights into design improvements for enhanced structural performance. For this study four different shapes (L, T, C and Hexagon) of plans of building modelled in E-tabs. Midair blast was considered, and load pressure was calculated. A triangular function for blast load applied in E-tabs and analysis was performed. Deformed shape of structure, storey drift, shear force, overturning moment were analyzed and columns sections which are in front of blast, are also analyzed based on axial force. After all the analysis found that hexagon shape of floor plan performed batter than the other floor shape. Displacement was 65–70% lower than the C-shape. Overturning moment was 55–60% less than in T and C shapes. Storey drift was consistently minimal across all floors. Critical column forces were the lowest in axial force. Its symmetrical and closed layout ensured uniform force distribution, minimal stress concentration, and superior blast resistance.
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