Seismic Vunurability Assesment of Buildings Based on Fragility Curves: A Review

In recent literature, there is increasing number of probabilistic seismic risk assessments performed. the basic ideas of the procedure for performing a probabilistic safety analysis (psa) of critical structures which could be used also for normal industrial and residential buildings, dams, nuclear power plants or other structures just within the concept of performance based seismic design (pbsd). one of the methods to investigate the vulnerability of existing buildings is touse fracture curves, which can have many applications before and after earthquakes. these curves are used to assess seismic hazard, prioritize structural rehabilitation, crisis management planning, and multi-risk approaches for different natural hazardous zones to estimate the amount of post-earthquake damage based on probabilistic based seismic analysis. this paper investigates the practices and methodologies for assessing seismic vulnerability of the existing steel andconcrete structures, in areas exposed to high seismicity and deals with the trend of its development.