Earthqake performance evaulation of a concrete frame building considering different soil conditions and strengthened

Occurrence of major material damage and loss of lives due to earthquakes in our country show that the earthquake safety of existing building stock is not enough. It is important to determine seismic performance of existing buildings and the buildings with poor performance should be strengthened to improve their earthquake safety. Adding shear walls to buildings is one of the strengthening method commonly preferred in Turkey. Seismic performance of a building depends on not only its behavior but also the soil classes on which it is constructed. In this study, the effect of different soil classes on seismic behavior of buildings using Nonlinear Static Procedure has been investigated. Also the effect of Shear Wall strengthening on seismic performance of building with different soil classes has been investigated. For this purpose, analytical model of a five-story reinforced concrete school building designed according to Turkish Seismic Code (TSC) 1975 has been prepared via SAP 2000 and seismic performance of the building has been investigated based on TSC 2007. Performance analysis has been conducted using Nonlinear Static Procedure for Z1, Z2, Z3 and Z4 soil class. According to the results, performance of the building is inadequate based on the TSC 2007 suggestion. Thus, the building should be strengthened and using shear Wall has been selected as strengthening method. As a result adding shear wall is enough to strength the building. For the firm soil effectiveness of shear Wall on seismic performance gets better and damage of structural elements decreases.