Concepts for Durable Post-Tensioned Bridges over Highways in Ontario, Canada
|
|
|||||||||||
Détails bibliographiques
| Auteur(s): |
Konstantinos Kris Mermigas
(Ontario Ministry of Transportation, Ontario, Canada)
|
||||
|---|---|---|---|---|---|
| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Publié dans: | IABSE Symposium Vancouver 2017 | ||||
|
|||||
| Page(s): | 2466-2474 | ||||
| Nombre total de pages (du PDF): | 9 | ||||
| Année: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.2466 | ||||
| Abstrait: |
Cast-in-place post-tensioned concrete bridges present certain advantages over slab-on-girder bridges and they make up 20% of the Ontario Ministry of Transportation’s bridge inventory. Despite their excellent performance, relatively few are currently built. This paper presents two concepts for cast-in-place post-tensioned concrete bridge replacements over existing highways which overcome some perceived shortcomings. The first concept is two-span cast-in-place voided slab underpass with monolithic pier columns and integral abutments on caissons. The superstructure is cast 1.2 m above the final profile to allow for falsework clearance over three lanes of highway in each direction, and jacked down to the final alignment. The second concept is a single-cell box girder underpass with two spans of 37.5 m, monolithic pier column, and integral abutments. |
||||