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Title: Red Line South. Doha Metro (Qatar). Complex cast-in-situ structures

Author(s): Jordi Revoltós Fort, Javier Antón Díaz, Silvia Criado Catalina, Juan Miguel Cereceda Boudet, Manuel Palomo Herrero

Publication: ACHE

Volume: 68

Issue: 282

Appears on pages(s): 129 - 138

Keywords: Variable width, Metro, Open section, Variable depth, Staged structure


Date: 5/1/2017

The Doha Metro Red Line South runs on a viaduct along most of the line. At the beginning, the design consisted of typical precast spans, but external constraints made complex structures necessary. For this reason, several cast in-situ bridges were built. Some of them have variable width (either simply-supported decks or continuous ones up to three spans), whereas other bridges are of variable depth, so they can reach 59m for a double track section and 75m for single track. The most complex bridge is the variable-depth one for the double track railway because the structural behaviour depends on several resistant mechanisms.

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