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Response and damage evaluation of reinforced concrete frames subjected to blast loading

Jayasooriya, Ruwan, Thambiratnam, David, Perera, Nimal, & Kosse, Vladis (2009) Response and damage evaluation of reinforced concrete frames subjected to blast loading. In 34th Conference on Our World In Concrete & Structures, 16-18 August 2009, Hotel Park Royal, Singapore.

Abstract

Bomb attacks carried out by terrorists, targeting high occupancy buildings, have become increasingly common in recent times. Large numbers of casualties and property damage result from overpressure of the blast followed by failing of structural elements. Understanding the blast response of multi-storey buildings and evaluating their remaining life have therefore become important. Response and damage analysis of single structural components, such as columns or slabs, to explosive loads have been examined in the literature, but the studies on blast response and damage analysis of structural frames in multi-storey buildings is limited and this is necessary for assessing the vulnerability of them. This paper investigates the blast response and damage evaluation of reinforced concrete (RC) frames, designed for normal gravity loads, in order to evaluate their remaining life. Numerical modelling and analysis were carried out using the explicit finite element software, LS DYNA. The modelling and analysis takes into consideration reinforcement details together and material performance under higher strain rates. Damage indices for columns are calculated based on their residual and original capacities. Numerical results generated in the can be used to identify relationships between the blast load parameters and the column damage. Damage index curve will provide a simple means for assessing the damage to a typical multi-storey building RC frame under an external bomb circumstance.

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ID Code: 25836
Item Type: Conference Paper
Keywords: Blast analysis, Reinforced concrete frames, Finite element analysis, LS DYNA Modelling, Damage evolution, Residual capacity, Damage indices
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Institute for Sustainable Resources
Past > Schools > School of Engineering Systems
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2009 [please consult the authors]
Deposited On: 29 Sep 2009 08:32
Last Modified: 29 Feb 2012 23:54

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