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Recent Brittle Fractures in Steel Bridges and Preventative Mitigation Strategies
Brittle fracture results in unplanned loss of service, very costly repairs, concern regarding the future safety of the structure, and potentially loss of life. These types of failures are most critical when there is no evidence of fatigue cracking leading up to the fracture. Hence, the failure occurs without warning and the details are essentially non-inspectable. In these cases, it appears desirable to take a proactive approach and introduce preventative retrofits to reduce the potential for future crack development. These efforts will help ensure that the likelihood of unexpected fractures is minimized. This paper examines the behavior of two bridge structures in which brittle fractures have developed in recent times, discusses the causes of the failures, and offers suggestions preventative mitigation techniques. In situations where considerable uncertainty exists in the prediction of accumulated damage or in the ability to reliably inspect critical details, preemptive retrofit strategies appear to be highly desirable.
Recent Brittle Fractures in Steel Bridges and Preventative Mitigation Strategies
Brittle fracture results in unplanned loss of service, very costly repairs, concern regarding the future safety of the structure, and potentially loss of life. These types of failures are most critical when there is no evidence of fatigue cracking leading up to the fracture. Hence, the failure occurs without warning and the details are essentially non-inspectable. In these cases, it appears desirable to take a proactive approach and introduce preventative retrofits to reduce the potential for future crack development. These efforts will help ensure that the likelihood of unexpected fractures is minimized. This paper examines the behavior of two bridge structures in which brittle fractures have developed in recent times, discusses the causes of the failures, and offers suggestions preventative mitigation techniques. In situations where considerable uncertainty exists in the prediction of accumulated damage or in the ability to reliably inspect critical details, preemptive retrofit strategies appear to be highly desirable.
Recent Brittle Fractures in Steel Bridges and Preventative Mitigation Strategies
Connor, J. Robert (author) / Fisher, John W. (author) / Wright, William J. (author)
Structures Congress 2005 ; 2005 ; New York, New York, United States
Structures Congress 2005 ; 1-17
2005-04-18
Conference paper
Electronic Resource
English
Recent Brittle Fractures in Steel Bridges and Preventative Mitigation Strategies
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