详情

原文传递 Fatigue Risks in the Connections of Sign Support Structures.

题名：	Fatigue Risks in the Connections of Sign Support Structures.
作者：	Diekfuss, J. A.; Foley, C. M.; Wan, B.
关键词：	Cracking; Design; Fatigue; Finite Element Method; Implementation; Inspections; Reliability; Risk; Statistical Data; Structural Analysis; Testing; Traffic Sign Supports
摘要：	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.
报告类型：	科技报告