Seismic Vulnerability Assessment of Historical Unreinforced Masonry Buildings in Osijek using Capacity Spectrum Method

G. Pavića, M. Hadzima-Nyarkoa, I. Plaščakb, S. Pavićc aFaculty of Civil Engineering and Architecture, Osijek, J.J. Strossmayer University in Osijek, Department of Materials and Structures, 31 000 Osijek, Croatia bFaculty of Agrobiotechnical Science, Osijek J.J. Strossmayer University in Osijek, Department of Agricultural Technics, 31 000 Osijek, Croatia cFaculty of Humanities and Social Sciences, Osijek, J.J. Strossmayer University in Osijek, 31 000 Osijek, Croatia

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The limitation of deformation, the desired level of bearing capacity of the structural elements and the dissipation of the energy produced by an earthquake ensure sufficient bearing capacity, stiffness and ductility of structures. These requirements are met by buildings which are designed and constructed in accordance with the latest technical regulations for buildings exposed to the earthquake. Most of the existing buildings in the city of Osijek do not meet these requirements. It is possible to use a capacity spectrum method for the purpose of considering possible responses of such structures to earthquakes and their estimates of seismic vulnerability. Calculation of seismic vulnerability by this method is based on the expected behavior of the building, obtained by overlapping the demand curve and capacity curve. The performance point is the point at which the capacity curve intersects the reduced response curve, at which capacity and demand are equal. The values of spectral displacement obtained for the performance point of a specific building class are used as the input parameters for the fragility curve for different levels of damage. This method will be applied to the collected database of traditional unreinforced masonry buildings of the city Osijek in Croatia. The database is prepared and the main characteristics of the buildings are processed using geographic information system.

DOI:10.12693/APhysPolA.135.1138 topics: seismic vulnerability assessment, historical unreinforced masonry buildings, GIS