Study on the design earthquake resistance and degree of earthquake damage of reinforced concrete viaducts

The design earthquake resistance and actual damage caused by the Hyogoken-Nambu earthquake were studied and compared for reinforced concrete rigid-frame viaducts between Sumiyoshi and Nada on the JR Tokaido Line, which sustained the heaviest damage of all railway structures during the Hanshin-awaji earthquake disaster in January 1995 in order to find the design earthquake resistance required to withstand this earthquake. As a result of using the elastic response acceleration converted according to the law of constant energy as an index of earthquake resistance, it was found that structures with an earthquake resistance of 1000-1200 gal suffered column deformation and settlement but did not collapse, and structures with an earthquake resistance of 1200 gal or more experienced only light damage such as cover concrete peeling or less. (C) 1997 Elsevier Science Ltd. All rights reserved.