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Accession Number PB2014-100608
Title Fatigue Risks in the Connections of Sign Support Structures.
Publication Date May 2013
Media Count 204p
Personal Author B. Wan C. M. Foley J. A. Diekfuss
Abstract 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 structures. The engineering community can use the results of this research effort to design inspection intervals based upon risk and thereby better align inspection needs with limited fiscal and human resources.
Keywords Cracking
Finite element method
Mast-arm sign support structures
Statistical data
Structural analysis
Traffic sign supports

Source Agency Department of Transportation
NTIS Subject Category 50A - Highway Engineering
85H - Road Transportation
Corporate Author Marquette Univ., Milwaukee, WI.
Document Type Technical report
Title Note Final rept.
NTIS Issue Number 1404
Contract Number SPR-0092-09-07

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