Seismoisolation for Upgrading of Existing Historical Buildings and Churches

Abstract eng:
In the beginning of the 70-th a program of analytical and experimental investigations of structure seismoisolation was carried out in Earthquake Engineering Research Center, TsNIISK, Russian Construction State Committee. As a result of the research program different structural systems of seismoisolation are designed. Different seismoisolated structures were constructed taking into account the investigation results. More than 500 buildings and historical monuments are seismoisolated in Siberia, Far East, Crimea, Caucasus, Middle Asia and other earthquake hazardous areas of Russian Federation. Some examples of seismoisolation for upgrading of existing historical buildings, including a bahk building and churches in Irkutsk-city (Siberia) are presented. All steps of installment of the steel-rubber supports in the bank building and church foundations are given. Seismoisolation was used in the designs of two churches in Irkutsk-city as well: Kharlampiyevskaya (Mikhailo-Arkhangelskaya) and Spasskaya churches which are historical and cultural monuments built in 1779-1790 and 1706-1713 accordingly. The structural concept includes an asymmetric in plan, columnless brick masonry structure. The building consists of several parts with different design, connected by walls in one unit, except for the porch. Its walls do not have bonding with main building walls. Also two cultural centers have been strengthened in seismic high earthquake hazardous areas using steel-rubber seismic isolation. One is the Chechen Republic Cultural Center Building Complex, which was damaged during the war. The other building was the GornoAltaysk National Drama Theater. Both complexes are situated at sites with design seismic intensity MSK 9 degree.

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