The fragility curves of a school building retrofitted by semi-rigid supported shear walls

In this study, the level of performance of a typical school building project which was commonly applied prior the 1999 Earthquakes, has been primarily determined by using the method of push-over analysis in accordance with the current Turkish Earthquake Code. The typical school building has been retrofitted by adding reinforced concrete shear walls to achieve the desired level of performance with the same analysis method. After that stage, it is assumed that the building which is supported by the semi-rigid foundation system, achieved the adequate performance level and the fragility curves were developed by nonlinear time history analyses. The main purpose of this study is to evaluate damage possibilities obtained in the framework of the performance-based approach for the existing condition of the school structure and its condition after the retrofitting. As a result of this study, it is possible to foresee the risk of damage to the structure at any level of earthquake.