Bomb attacks carried out by terrorists, targeting high occupancy buildings, haveudbecome increasingly common in recent times. Large numbers of casualties andudproperty damage result from overpressure of the blast followed by failing of structuraludelements. Understanding the blast response of multi-storey buildings and evaluatingudtheir remaining life have therefore become important.udResponse and damage analysis of single structural components, such as columns orudslabs, to explosive loads have been examined in the literature, but the studies onudblast response and damage analysis of structural frames in multi-storey buildings isudlimited and this is necessary for assessing the vulnerability of them. This paperudinvestigates the blast response and damage evaluation of reinforced concrete (RC)udframes, designed for normal gravity loads, in order to evaluate their remaining life.udNumerical modelling and analysis were carried out using the explicit finite elementudsoftware, LS DYNA. The modelling and analysis takes into considerationudreinforcement details together and material performance under higher strain rates.udDamage indices for columns are calculated based on their residual and originaludcapacities. Numerical results generated in the can be used to identify relationshipsudbetween the blast load parameters and the column damage. Damage index curveudwill provide a simple means for assessing the damage to a typical multi-storeyudbuilding RC frame under an external bomb circumstance.
展开▼
