SEISMIC VULNERABILITY ASSESSMENT OF REINFORCED CONCRETE STRUCTURE IN TABRIZ NORTH FAULT VICINITY

The aim of this paper is determining the probability of seismic vulnerability of two building, 8 and 5 storied, reinforced concrete residential building as examples of existing buildings in high risk area, in Tabriz. These structures have been modeled in 3D frame in SAP2000 software [17] and excitation with selected twenty ground motion records. Each record have 15 synthetic records. As a result, a total of 300 records were entered into SAP2000. We evaluate the ISDR at each storey and retain the maximum value to give an overall idea of the building damage level. By comparing structures response together and with damage states, it can be concluded that the structures reach to initially predicted performance. The study presented in this article summarizes the vulnerability analysis for the case studies of Tabriz in East Azerbaijan (the north-west of Iran). These buildings are of regular shape with 8 and 5 numbers of stories. The analysis consider seven damage states, from none to complete collapse, complying with Rossetto and Elnashai [15] classification.