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Fatigue Risks In The Connections Of Sign Support Structures, Christopher M. Foley, Joseph A. Diekfuss, Baolin Wan
Fatigue Risks In The Connections Of Sign Support Structures, Christopher M. Foley, Joseph A. Diekfuss, Baolin Wan
Transportation Reports with the Wisconsin Department of Transportation
This research effort develops a reliability-based approach for prescribing inspection intervals for mast-arm sign support structures corresponding to user-specified levels of fatigue-induced fracture risk. The resulting level of risk for a particular structure is dependent upon its geographical location, the type of connection it contains, the orientation of its mast-arm relative to north and the number of years it has been in service. The results of this research effort indicate that implementation of state-of-the-art reliability-based assessment procedures can contribute very valuable procedures for assigning inspection protocols (i.e. inspection intervals) that are based upon probabilities of finding fatigue-induced cracking in these …