Construction Challenges in Super Large Double-Deck Bridges -- Minpu Bridge Construction Practice

The Minpu Bridge, acrossing the Huangpu River in Shanghai, is a double-deck cable-stayed bridge with main span of 708 meters, carrying 8 traffic lanes on the upper deck and 6 lanes on the lower deck . A composite truss of steel web members and fiber reinforced concrete embedded with steel frames for the upper and lower decks, is first used in a long span cable-stayed bridge. Composite truss structure, as well as all-welded connection methods for the main span, is applied. This paper presents the main features and key technologies that have been successfully studied and applied.