Damage assessment of 3D reinforced concrete frame under external explosion loading

Jayasooriya, Ruwan, Thambiratnam, David, Perera, Nimal, & Kosse, Vladis (2010) Damage assessment of 3D reinforced concrete frame under external explosion loading. In 1st Makassar International Conference On Civil Engineering, 9-10 March 2010, Clarion Hotel, Makassar, Province of South Sulawesi, Indonesia.

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Multi-storey buildings are highly vulnerable to terrorist bombing attacks in various parts of the world. Large numbers of casualties and extensive property damage result not only from blast overpressure, but also from the failing of structural components. Understanding the blast response and damage consequences of reinforced concrete (RC) building frames is therefore important when assessing multi-storey buildings designed to resist normal gravity loads. However, limited research has been conducted to identify the blast response and damage of RC frames in order to assess the vulnerability of entire buildings.
This paper discusses the blast response and evaluation of damage of three-dimension (3D) RC rigid frame under potential blast loads scenarios. The explicit finite element modelling and analysis under time history blast pressure loads were carried out by LS DYNA code. Complete 3D RC frame was developed with relevant reinforcement details and material models with strain rate effect. Idealised triangular blast pressures calculated from standard manuals are applied on the front face of the model in the present investigation. The analysis results show the blast response, as displacements and material yielding of the structural elements in the RC frame. The level of damage is evaluated and classified according to the selected load case scenarios. Residual load carrying capacities are evaluated and level of damage was presented by the defined damage indices. This information is necessary to determine the vulnerability of existing multi-storey buildings with RC frames and to identify the level of damage under typical external explosion environments. It also provides basic guidance to the design of new buildings to resist blast loads.

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ID Code: 30157
Item Type: Conference Paper
Refereed: No
Keywords: Blast analysis, Damage evolution, , Residual capacity, , 3D Reinforced concrete frames, Finite element analysis, LS DYNA Modelling
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500) > Structural Engineering (090506)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Past > Schools > School of Urban Development
Copyright Owner: Copyright 2010 [please consult the authors]
Deposited On: 17 Mar 2010 22:19
Last Modified: 29 Feb 2012 14:16

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