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Nowadays considerable attention has been given to the behaviour of structures under blast loading. The use of explosives by terrorist groups is becoming a great threat to the society. The analysis and design of structures subjected to blast loads require a detailed understanding of the blast phenomena and the dynamic response of various structural elements. This paper aims on an overview of the effects of blast loading on reinforced concrete frames. The negative phase of the blast wave is usually not taken into consideration as the main structural damage is associated with the positive phase. But the negative phase of the blast wave should be taken into account if the overall structural performance of the structure is assessed and not only its structural integrity. The negative phase can either increase or decrease the deflections. In this paper a comparison and assessment was done to present the differences between the standard blast load model, neglecting the negative phase, and the blast load model, which takes both the positive phase and the negative phase into account. The responses of the frames were studied for two charge weights. The finite element package ANSYS was used to model the RC frames.
Nowadays considerable attention has been given to the behaviour of structures under blast loading. The use of explosives by terrorist groups is becoming a great threat to the society. The analysis and design of structures subjected to blast loads require a detailed understanding of the blast phenomena and the dynamic response of various structural elements. This paper aims on an overview of the effects of blast loading on reinforced concrete frames. The negative phase of the blast wave is usually not taken into consideration as the main structural damage is associated with the positive phase. But the negative phase of the blast wave should be taken into account if the overall structural performance of the structure is assessed and not only its structural integrity. The negative phase can either increase or decrease the deflections. In this paper a comparison and assessment was done to present the differences between the standard blast load model, neglecting the negative phase, and the blast load model, which takes both the positive phase and the negative phase into account. The responses of the frames were studied for two charge weights. The finite element package ANSYS was used to model the RC frames.
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