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Macdonald Bridge Suspended Spans Deck Replacement: Construction Engineering Challenges and Solutions

 Macdonald Bridge Suspended Spans Deck Replacement: Construction Engineering Challenges and Solutions
Auteur(s): ,
Présenté pendant IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016, publié dans , pp. 1613-1620
DOI: 10.2749/stockholm.2016.1608
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The Angus L. Macdonald Bridge, a major suspension bridge that crosses Halifax Harbour in Halifax, Nova Scotia, opened to traffic in 1955. The bridge deck has reached the end of its service life, an...
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Détails bibliographiques

Auteur(s): (COWI Bridge North America)
(COWI Bridge North America)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Challenges in Design and Construction of an Innovative and Sustainable Built Environment, Stockholm, Sweden, 21-23 September 2016
Publié dans:
Page(s): 1613-1620 Nombre total de pages (du PDF): 8
Page(s): 1613-1620
Nombre total de pages (du PDF): 8
Année: 2016
DOI: 10.2749/stockholm.2016.1608
Abstrait:

The Angus L. Macdonald Bridge, a major suspension bridge that crosses Halifax Harbour in Halifax, Nova Scotia, opened to traffic in 1955. The bridge deck has reached the end of its service life, and the design of the new bridge superstructure and its replacement sequence were completed in 2014. The entire suspended structure and hangers are now being replaced sequentially during night and weekend closures while the bridge is opened for traffic during the daytime. The erection sequence is supported by sophisticated automated erection analysis models which take into account the geometry of the existing bridge, positioning of the erection equipment on the deck, and hanger and strand jack adjustments that are required during construction. Significant wind tunnel testing and analysis have been performed to ensure aerodynamic stability of the bridge during erection and in its final condition.

Mots-clé:
pont suspendu remplacement du tablier

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