Damage Assessment and Seismic Strengthening of Stone Masonry Historical Buildings in Bosnia and Herzegovina

摘要

Bosnia and Herzegovina is situated in seismic active region of South-East Europe, divided in seismic zones with PGA of 0.1-0.2 g for 500 years return period, even PGA of 0.30-0.35 g in some parts. Traditionally, a lot of historical buildings were made of stone-masonry. They exhibit stiff behavior when exposed to the seismic loading. In the case of stronger earthquake motion such buildings could suffer substantial or heavy damages. Some structural elements, as domes and arches, crack already by moderate earthquake but without the loss of stability. Generally, stone-masonry buildings in Bosnia and Herzegovina can be classified in vulnerability classes B and C according to European Macroseismic Scale EMS. Retrofit and strengthening of these buildings are important and complex task for structural engineers. Besides structural demands, special attention has to be paid to conservator's requests and conditions. Analytical and construction rehabilitation procedures of three historical stone masonry buildings, dated from Ottoman period, situated in different seismic regions of Bosnia and Herzegovina are presented here. For the strengthening of the building structures traditional and contemporary materials were implemented.