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SEISMIC ASSESSMENT OF ARCH BRIDGE ACROSS KORANA RIVER IN SELIŠTE

The reinforced concrete arch bridge across Korana River in Selište was built in 1957, designed by the famous Croatian bridge builder prof. Kruno Tonković. Main structural elements of this bridge are twin reinforced concrete arches with span of 60.1 m and rise of 16.1m. Sickle shaped arches have solid cross sections 0.9m deep at arch abutments and 1.47m at the arch crown. The bridge was designed and constructed according to 1950’s design codes with no seismic actions taken into the account. According to the current Croatian seismological chart, peak ground acceleration at the location of the bridge is 0.12g. For this reason the bridge was assessed for seismic actions with nonlinear static pushover method and results were evaluated within demands defined by current European seismic design codes.

Seismic assessment; existing bridge; reinforced concrete arch bridge; 1950’s design codes; nonlinear static pushover analysis; current European seismic design codes

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