Empuje con doble curvatura, planta y alzado, en viaducto de línea de alta velocidad Orense-Monforte-Lugo, Variante de San Julián

The construction sequence by means of incremental-launching for curved plan alignment and a straight and convex parabolic elevation, has required the adaptation of the traditional method of launching towards a hybrid method that, preserving the inherent advantages of the primary construction system, has allowed to work with these unusual geometrical conditions. The establishment of the launching procedure in two phases: launching on a transitional trajectory affected by the vertical flexibility of the deck, and the further rectification of the deck elevation by a sequential controlled support descent, has provided viability for this method with a highly competitive result.