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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Precast cantilever construction method versus in situ cantilever construction method (Viaduct of the Coruxas; viaduc of Darro)
Author(s): Pérez-Fadón Martínez, S.; Herrero Beneítez, J. E.
Appears on pages(s): 105 - 118
Abstract:This article compares two bridge construction procedures by cantilever. The construction where segments are concreted on formwork ""in situ"", versus the construction where segments are precast and erected with a launching girder. As basis of comparison, two similar span bridges constructed simultaneously are used. The Viaduct of Darro in Granada, and the Viaduct of Las Coruxas inm Asturias. A brief description is given of the two construction methods. The differences in Dimensions, Geometric Control, the Schedule and Costs are analyzed. The conclusion is reached that up to a clearance of 125 m, the construction with precast segments takes the half construction time than ""in situ"" segments. The cost depends on whether the company has skilled workers and equipment for one procedure or another. If the company has both, the cost is about 10 per cent less for precast segments.
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