An innovative approach of using UHPC for metro viaducts

Author(s) : S. Montens, J. Olive, P.-E. Gautier, S. Bernardi
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. ResplendinoT.Ch.
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 699 - 706
Total Pages : 8
Language : English

Abstract: Systra had developed since 1996 a concept of U-shape viaduct, used for more than 300 km of metro viaducts throughout the world. In order to continuously improve the transportation infrastructures, SYSTRA has developed recently, with inputs from Lafarge Holcim, a new structural and architectural concept for metro viaducts, using UHPC.
The deck and the piers are made of a combination of UHPC and ordinary concrete. The lateral beams have openings in order to: clear the view from the metro passengers across the lateral beams, improve the architectural aspect and allow various esthetical expressions, and optimize the UHPC use. Thanks to this new design, the span between piers is about 45m to 50m (instead of formerly 35m for SYSTRA classical U-shape viaducts). This longer typical span facilitates the crossing of crossroads and various obstacles. Globally the carbon print of the UHPC viaduct is less pronounced than the classical viaducts, due to a better durability of UHPC.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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