United States Department of Transportation
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Simulation of Degradation and Failure of Suspension Bridge Main Cables Due to Natural and Anthropogenic Hazards
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2022-10-01
[PDF-7.38 MB]
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Corporate Contributors:United States. Department of Transportation. Federal Highway Administration ; Rutgers University. Center for Advanced Infrastructure and Transportation ; United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
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Edition:Final Report Sept. 1, 2019 – August 31, 2022
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Abstract:This project focused on the creation of a numerical model able to emulate the static and dynamic behavior of the mechanical components (wires embedded in the cable) which are subjected to high temperature fields. Fire incidents on suspension bridges have become an increasing risk to safety. The vehicles that catch fire contain flammables having potential to affect a suspension bridge’s structural members. In many cases, these are hydrocarbon fires, which are known to burn at higher temperatures. Case studies have shown fires do occur mid-span or near the anchorage. The duration of these fires easily reaches an hour, which can lead to damage in the main cables. When not in close proximity to the main cables, fires can present danger to the suspenders, deck, and other structural components that will require repair or accelerated maintenance. Moreover, the economic impacts of suspension bridge fires must be considered. Not only is productivity of the community hindered, but also the toll revenue loss creates concern for bridge owners.
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