engleski

SEISMIC ASSESSMENT OF ARCH BRIDGE ACROSS SLUNJČICA RIVER IN SLUNJ

This paper represents a successful structural work designed by prof. Kruno Tonković – reinforced concrete arch bridge across Slunjčica River in Slunj built in 1961. Main structural elements of this bridge are twin reinforced concrete arches with span of 72m and rise of 10m with solid cross sections 1.2m deep at arch abutments and only 0.85m at the arch crown. The bridge was designed and constructed according to 1960’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; 1960’s design codes; nonlinear static pushover analysis; current European seismic design codes

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