an analytical method for seismic vulnerability analysis of unreinforced masonry buildings

The damage caused by past earthquakes in iran indicates that school facilities, in particular masonry schools, are an important part of the built infrastructure that is vulnerable to earthquakes. however, researches focused on seismic loss assessment of masonry buildings in iran is scarce in the literature (see e.g. omidvar et al., 2012). as the supplement of astudy performed by azizi-bondarabadi et al. (2016) to generate empirical fragility curves for iranian unreinforced masonry (urm) school buildings, the objective of the present paper is to develop a new analytical method for providing validated fragility curves and subsequently performing an economic-based vulnerability assessment. using the availabledatabase of schools in iran, the empirical method has been developed for four building types from urm schools located in the province of yazd, iran. within the empirical method, the indices of the gndt ii level method (benedetti & petrini, 1984) and an index-based method developed in iran were first evaluated for 25 schools from the four typologies. the results were then correlated to calibrate the gndt ii level method. then, a procedure was proposed for combining thegndt ii level method and the macroseismic method (giovinazzi, 2005) correlating macroseismic intensity i and pga as well as the physical damage and the damage factor. finally and using this combination procedure, the calibrated results were employed to derive a relationship for the school typologies that is able to calculate the index v of the macroseismicmethod with respect to a simple index ri of the iranian method.