SEISMIC ASSESSMENT AND STRENGTHENING OF AN EXISTING MULTI-STOREY MASONRY BUILDING IN SARAJEVO , BOSNIA AND HERZEGOVINA
The paper discussed the behaviour of a typical multi-storey masonry residential building in Sarajevo as part of the massive construction during the 50's and 60's in the Western Balkans. It is noted that these kinds of buildings have been designed without utilizing any seismic codes. Structural walls are located mainly in one direction. As, such buildings represent a large portion of residential unreinforced masonry building stock in a wider region, which most probably do not satisfy the latest code provisions, this leads to the necessity for investigation of their seismic vulnerability. Global numerical models of the building taking into account nonlinear material characteristics have been created. Time History Analysis was done in Finite Element Method (FEM) program, while Pushover Analysis was done in Equivalent Frame Model (EFM) as well. Several comparisons were done and results were found to be in a very good correlation. The paper's aim was to assess the seismic safety of this type of structure. As the building showed inadequate behaviour in X-direction strengthening proposals have been made.