Analytical Assessment of Extreme Loads on Reinforced Concrete Frame

Jayant Wala , A.Vijay

Abstract

Terrorist attack, now a days is becoming a common phenomenon for the world and it is a challenge for a structural engineer to design blast resistant structures. It is very difficult to design blast proof structure but blast resistant structure is possible to design. A bomb explosion near to structure or within the structure can cause catastrophic damage on entire building frames, walls, slabs, doors, glass panels and surrounding structures. This leads to severe loss of life and injuries for the people. Blast effect depends upon the standoff distance and explosive types. Large catastrophic damage from the gas explosion applies more load than designed loads. Blast load is also dynamic load which can be applied as a lateral load or in the pressure form on front face of the building. The analysis and design of blast resistant structure requires detailed understanding of blast loads and dynamic response of various structural elements. This paper deals with the blast response of reinforced concrete frame at different standoff distance and different charge weight for multi-story and single storey. Variation in deformation, velocity, acceleration of the structure is explained on the basis of analytical results.