CONSTRUCTION OF AN URBAN EXPRESSWAY ABOVE 30M WIDE STREETS IN NAGOYA

Most of Nagoya City's expressway is built above streets which are 30- 50m wide. The Y-shaped double-deck structure chosen uses box girders with sound absorption boards to reduce noise. The structure of the foundations is illustrated. The alterations necessary to traffic flow, underground services and footpaths are discussed. Details are given of the erection of girders. The process of lifting girders to a height of 28m using rolling-up jacks is illustrated. The construction of a single deck branch of the expressway is also described. This includes the girder structure, foundation structure and the construction of underground sludge tanks. The placing of girders using setting beams is described. For the covering abstract see IRRD 873033.