A set of vulnerability curves for seismic risk assessment of current buildings in urban zones of iran

Abstract eng:
The vulnerability curves correlate the hazard with the damage, described for example by a mean damage grade, which represent the behaviour of any possible building, defined only by one parameter: the vulnerability index. Considering that the risk can be defined as the combination of hazard and vulnerability, a good knowledge about the vulnerability of affected buildings is an essential part of any risk assessment study. In Iran, with its peculiar urban patterns and architectural tradition that vary from place to place, seismic vulnerability particularly concerns certain types of constructions (e.g. very common non-reinforced masonry houses, building of cultural heritage, old inhabited buildings in town centres, adobe housing and many reinforced concrete buildings constructed between about 1960 and 1980, that are characterised by poor material, design and quality of execution). The main goal of the present work is to propose a set of vulnerability curves that can be used in a large scale seismic risk assessment. We will focus on the vulnerability assessment of current buildings. The existing standard vulnerability curves are adapted to Iranian constructions. To this end, the existing damage data in Iranian cities (mainly after Bam earthquake) are analyzed. Considering the gathered data, the damage probability matrix for the main types of Iranian construction is developed when enough data were available. The proposed vulnerability curves can be enriched in the same manner with new data if available and then be used as a key element of a seismic risk assessment study of urban zones in Iran.

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