engleski

Seismic strengthening of stone masonry structures – state of the art

In Croatia, a great number of buildings are built in masonry. The majority of them were built before the development of seismic codes and a lot of them are vernacular, unreinforced structures. As a result, many of these buildings need to be evaluated and, if needed, strengthened. Today, codes and guidelines for the evaluation and retrofitting of existing masonry structures do exist but are not very comprehensive and require a lot of engineering subjective judgment to implement. Furthermore, the problem lies in the complexity of implementing retrofitting methods since most of the masonry buildings are in use (private or public) during the strengthening. Besides that, a great number of buildings in Croatia (i.e. City of Dubrovnik) and around the world built in stone masonry have a great heritage value so the requirements made by conservators play a part in the methods used as well. An overview of the most commonly used methods of seismic analysis and strengthening are presented in this paper. The main objective of this paper is to comprehend, gather and compare different state -of-the - art principles of seismic retrofitting of structures focusing on stone masonry. Different approaches are analyzed and compared in order to get closer to a unified method of evaluation and strengthening of existing structures.

stone masonry, buildings, seismic capacity, strengthening methods, retrofitting methods

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