The Development of New Building Vulnerability Relationships Using The CEQID Database

In literature, different vulnerability relationships exist which provide the probability of exceedance of a damage state given an intensity measure. Relationships can be obtained in different ways, using actual data or using mechanical models. This paper provides empirical vulnerability relationships starting from observed data that have been collected after different earthquakes and grouped in the Cambridge Earthquake Impact Database (CEQID). Relationships have been obtained for different building classes and for two different intensity measures (macroseismic intensity and peak ground acceleration). Moreover, analyses have been conducted considering two different probability density function distributions (binomial and beta) to define the probability of occurrence of a damage state given the intensity measure.