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- W2479738963 abstract "This article presents another system of arch construction by rotation of the semiarches that has been used in several HSR bridges in Spain. It has proved to be very adequate for arched spans in the span range from 100 to 200 m. Using provisional stay cables anchored in the contiguous pier foundations, the semi-arches placed vertically on their springers over provisional hinges are rotated until meeting at the keystone, where they connected. As an example of this technique it is described a viaduct over the River Tera designed by CFC, a 645 m long structure that crosses a reservoir, where a 150 m span without intermediate supports was required. An arch made out of high-strength structural steel (S460) was used to span it. The modulation of structure length was well solved using 75 m long spans with a prestressed concrete box section girder to be built by the incremental launching. Taking into account that the river crossing length (150 m) is the double of this value, the arch solution allows for a constant span length using the arch central section as an intermediate deck support, then keeping the same deck construction solution in the entire deck. Figure 1. General view" @default.
- W2479738963 created "2016-08-23" @default.
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- W2479738963 date "2015-01-01" @default.
- W2479738963 modified "2023-09-27" @default.
- W2479738963 title "Long Railway Viaducts with special spans. Part 2: Arch construction by tilting" @default.
- W2479738963 hasPublicationYear "2015" @default.
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