濃尾地震における土木構造物の被害と復旧

Abstract

A destructive earthquake of magnitude greater than 8 was originated at the northwestern part of Gifu Prefecture, central part of Honshu, Japan on 28 Octorber 1891. The damaged area by this earthquake was spreaded over one third of Honshu. The remarkable fault was appeared. In the meizoseismic area 164,611 houses were totally destroyed, 123,162 were half destroyed, 7885 persons were killed, and 21334 persons injured. It caused serious damage to civil engineering constructions such as highways, railway bridges, embankments and revetments, etc. Further, land deformation and ground liquefaction were induced by severe ground vibrations. The damage to civil engineering constructions and restoration processes that followed were presented in this paper. The damages by this earthquake amounted to greater than a fiscal year's national budget. It seemed to take a period of about two years for restorations of total damaged places of bridges, highways, revetments, and embankments, etc, because their disasters were various kinds of settlements, cracks, slidings, and/or failures which were widely distributed.