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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Monitoring and Fatigue Analysis of Suspension Bridge Rocker Arms
The Seaway International Bridge in Cornwall, Ontario, consists of two distinct bridges, the South Channel Bridge (SCB) and the North Channel Bridge (NCB), that link the Akwesasne Mohawk Territory to the United States and Canada across the St. Lawrence River. Both the bridges are maintained by Seaway International Bridge Corporation (SIBC). The Federal Bridge Corporation (FBCL) and the Saint Lawrence Seaway Development Corporation (SLSDC) collaborate to manage the SIBC. The South Channel Bridge first opened in 1958 and is a suspension bridge with a total length of 1061 m and a roadway width of 8.2 m. The stiffening truss of the bridge deck is connected to the towers by eight rocker arms. The rocker arms have pin-ended connections and therefore are expected to primarily be subjected to axial loads. One of the rocker arms developed fatigue cracks and fractured in 2015 causing the deck to descend 150 mm at the expansion joint. The entire rocker arm assembly was replaced, and by 2021 concerns about the other seven rocker arms led to the installation of a monitoring system consisting of 32 vibrating wire strain gauges. This paper will review some key findings from the monitoring and the fatigue analysis used to assess the remaining life of the rocker arms.
Monitoring and Fatigue Analysis of Suspension Bridge Rocker Arms
The Seaway International Bridge in Cornwall, Ontario, consists of two distinct bridges, the South Channel Bridge (SCB) and the North Channel Bridge (NCB), that link the Akwesasne Mohawk Territory to the United States and Canada across the St. Lawrence River. Both the bridges are maintained by Seaway International Bridge Corporation (SIBC). The Federal Bridge Corporation (FBCL) and the Saint Lawrence Seaway Development Corporation (SLSDC) collaborate to manage the SIBC. The South Channel Bridge first opened in 1958 and is a suspension bridge with a total length of 1061 m and a roadway width of 8.2 m. The stiffening truss of the bridge deck is connected to the towers by eight rocker arms. The rocker arms have pin-ended connections and therefore are expected to primarily be subjected to axial loads. One of the rocker arms developed fatigue cracks and fractured in 2015 causing the deck to descend 150 mm at the expansion joint. The entire rocker arm assembly was replaced, and by 2021 concerns about the other seven rocker arms led to the installation of a monitoring system consisting of 32 vibrating wire strain gauges. This paper will review some key findings from the monitoring and the fatigue analysis used to assess the remaining life of the rocker arms.
Monitoring and Fatigue Analysis of Suspension Bridge Rocker Arms
Lecture Notes in Civil Engineering
Desjardins, Serge (Herausgeber:in) / Poitras, Gérard J. (Herausgeber:in) / El Damatty, Ashraf (Herausgeber:in) / Elshaer, Ahmed (Herausgeber:in) / Neupane, Sushant (Autor:in) / MacDougall, Colin (Autor:in)
Canadian Society of Civil Engineering Annual Conference ; 2023 ; Moncton, NB, Canada
Proceedings of the Canadian Society for Civil Engineering Annual Conference 2023, Volume 12 ; Kapitel: 29 ; 361-374
13.12.2024
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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