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Design of the Canada Line Extradosed Transit Bridge

 Design of the Canada Line Extradosed Transit Bridge
Autor(en): , ,
Beitrag für 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008, veröffentlicht in , S. 268-269
DOI: 10.2749/222137908796292579
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In 2005, TransLink procured the new Canada Line rapid transit system that will connect Richmond, the Vancouver International Airport and downtown Vancouver. The Line is scheduled for completion in ...
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Autor(en):


Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: 17th IABSE Congress: Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, USA, 17-19 September 2008
Veröffentlicht in:
Seite(n): 268-269 Anzahl der Seiten (im PDF): 8
Seite(n): 268-269
Anzahl der Seiten (im PDF): 8
Jahr: 2008
DOI: 10.2749/222137908796292579
Abstrakt:

In 2005, TransLink procured the new Canada Line rapid transit system that will connect Richmond, the Vancouver International Airport and downtown Vancouver. The Line is scheduled for completion in 2009. An extradosed precast segmental box girder bridge was designed for the longest span on the Line, which crosses the Fraser River North Arm. The North Arm Bridge which carries two rail tracks and a suspended walkway/bikeway, is 562 m long with a 180 m main span, 139 m side spans and 52 m transition spans. A single plane of extradosed cables anchored to two 22 m tall pylons supports the main and side spans. New to North America, this bridge form provided an appropriate solution considering the design constraints. In this paper, the extradosed bridge form is introduced prior to describing the design constraints that led to its use for the North Arm Bridge. The analysis of dynamic train-structure interaction, cable anchorage details and the precast segmental composite steel/concrete pylons are also described.

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Schrägseile extradosed

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