Analysis of Multi-Storey RC Building Subjected to Blast Load using Time History Method


Authors : Megha S. Mahaladkar, Ramya K.

Volume/Issue : Volume 4 - 2019, Issue 6 - June

Google Scholar : https://goo.gl/DF9R4u

Scribd : https://bit.ly/2XJqFXY

The impact of the blast load on the structure due to the increase of terrorist activities is a serious issue causing failure of the buildings and loss of life. Depending upon the location of blast within or nearby buildings the structure undergoes ravaging failure due to explosion. In the present study, G+5 storeyed building is subjected to 200, 400 and 600 kg charge weight of the blast load with a standoff distance of 20, 40 and 60m. IS:4991 – 1968 is used to determine the blast parameters. The time history analysis is carried out using ETABS 2016 software. The response of the structure is determined in terms of displacement v/s time, velocity v/s time and acceleration v/s time, storey drift, column forces and storey displacement. Depending on the source of the blast load and the charge weight of the explosive, response of the building and safe standoff distance is found. To make the building more resistible for blast load, various structural systems like shear wall and steel bracings are implemented.

Keywords : Blast load; Standoff distance; Charge Weight; ETABS 2016.

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