Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Stefan Florin BALAN, Bogdan Felix APOSTOL, Alexandru TIGANESCU
Some buildings need special attention in attempting to protect them against strong seismic movements. Seismic isolation comes as a suitable solution to protect the integrity of the construction. For this accomplishment are needed some thorough data about the dynamic characteristics of the structure and site specificity. The characteristics of the buildings can be found from either design data, or from subsequent measurements on its structure. The study of seismic waves has become a design criterion in advanced seismic codes, using design spectra compatible with local conditions differentiated on qualitative stratigraphic description and quantitative waves velocity-based criteria. The results of the later important geophysical measurement campaigns are described and used in this work. To identify whether seismic isolation for buildings is efficient in an earthquakes-prone environment, very important is the analysis of the location they are, or will be. One of the most important elements to be evaluated is the natural period of the site. The conditions for an efficient seismic isolation are presented and discussed with examples. In the paper are also described the different types of seismic isolated structures in Bucharest, and the reason for selecting them.
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