Back Analyses of Damaged Retaining Structures for Railway by Hyogoken-Nambu Earthquake
Masaru TATEYAMA
During the Hyogoken-Nambu Earthquake of January 17, 1995, many important civil engineering structures, steel-reinforced concrete(RC) structures, RC buildings, subway structures and port structures, were seriously damaged. Also the earth structures, many retaining walls(RWs) and embankments were equally damaged. Particularly, serious damage was inflicted to a number of conventional masonry and unreinforced concrete gravity-type RWs. Many modern cantilever-type steel-reinforced concrete RWs were also damaged, while geogrid-reinforced soil RWs behaved very well during the earthquake. This paper describes the results of back analyses by the pseude-static limit equilibrium method on those different types of the four RWs.