Seismic performance evaluation and retrofitting / strengthening of 142 public school buildings in Istanbul have been implemented within the World Bank funded Istanbul Seismic Risk Mitigation and Emergency Preparedness (ISMEP) Project. The most common retrofitting techniques applied to the school buildings following their seismic performance assessments in accordance with the national (Turkish Earthquake Resistant Design and Retrofitting Code-2007, [3]) and the international standards (FEMA273, FEMA356, ASCE41-06) are the reinforced concrete jacketing of the existing columns and shear walls and, the construction of new shear walls. In this study, a parametric evaluation of the retrofitting techniques applied to the school buildings is carried out. The amounts of RC jacketing (i.e. concrete and steel quantities) and the number of the newly added shear walls are statistically evaluated and the changes in the stiffness, fundamental period and the mass of the buildings as well as the resulting base shears are compared with the existing cases.
展开▼
