Under-Slung and Overhead Gantries for Span by Span Erection of Precast Segmental Bridge Decks.

The article reports on overhead and under-slung gantries used for span by span construction of precast segmental bridge decks. It mentions that the decks are the most common structural systems applied for precast segmental viaducts. It notes that the gantries' performance standard and configuration are directly affected by a method wherein segments are joined and activated to self-supporting spans. It also justifies the features of the frameworks and compares their application ranges.