Review of Confederation Bridge ice forces: Winter 2008-2010

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Proceedings titleProceedings of the International Offshore and Polar Engineering Conference
Conference21st International Offshore and Polar Engineering Conference, ISOPE-2011, 19 June 2011 through 24 June 2011, Maui, HI
Pages10641070; # of pages: 7
SubjectConfederation bridge; Conical structures; Data acquisition system; Ice conditions; Ice forces; Ice loading; Interaction process; Measurement systems; Tilt data; Tilt measurement; Wind action; Wind data; Meteorological problems; Stress analysis; Ice
AbstractIce interactions with the Confederation Bridge for the winters 2008, 2009 and 2010 have been studied. Ice conditions for these winters were characterized by two average and one very mild. Tilt data from piers P23 and P24 in response to ice and wind actions were recorded by a data acquisition system. Video records of ice interactions with pier P23 and overall ice conditions adjacent to piers P23 and P24 allowed ice conditions and interaction processes to be related to tilt measurements. Wind data were analysed to correct for the tilt caused by wind actions on the bridge. Limit stress and limit force events were identified. An ice loading scenario that transitioned from limit force to limit stress resulted in the highest ice forces measured over the three years of monitoring, with forces of 3.1 MN and 4.3 MN at P23 and P24, respectively. This loading event corresponded to a likwly adfreeze condition. Copyright © 2011 by the International Society of Offshore and Polar Engineers (ISOPE).
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AffiliationNational Research Council Canada (NRC-CNRC); NRC Canadian Hydraulics Centre (CHC-CHC)
Peer reviewedYes
NPARC number21271225
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Record identifiera6ac7cb7-6738-4fc1-87ae-3e3ccf442113
Record created2014-03-24
Record modified2016-05-09
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