Seismic Fragility Assessment of Non-ductile Reinforced Concrete Buildings in Australia

This study aims to assess the seismic performance of typical reinforced concrete buildings constructed in Australia before the enforcement for seismic design. The response of both the primary lateral load resisting system and the gravity load resisting system is considered. A brief description of the modelling approaches adopted to simulate the response of the buildings’ components is provided. Nonlinear time history analyses are conducted and “cloud analysis” is used to develop the probabilistic seismic demand models. The results from the fragility assessment suggest that the low-rise buildings located on soft sites are the most vulnerable buildings.