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原文传递 Structural Analysis of Sign Bridge Structures and Luminaire Supports. Final rept.

题名：	Structural Analysis of Sign Bridge Structures and Luminaire Supports. Final rept.
作者：	Foley-C.M.; Fournelle-R.A.; Ginal-S.J.; Peronto-J.L.
关键词：	Structural-analysis; Sign-supports; Fatigue-life; Luminaries-.;Overhead-signs; Cracking-; Failures-; Supports-; Performance-.
摘要：	The Wisconsin Department of Transportation has experienced failures of a high-mast luminary (HML) support structure and a full-span overhead sign support structure. Furthermore, cracking has been found in many sign support structures composed of welded round hallow structural shapes (HSS). The purpose of the research conducted was to provide fatigue life estimates for these structures, which could then shed light onto the causes of the cracking found and the failures experienced. The analytical and experimental effort conducted was also used to establish rational inspection intervals for these structures and recommend changes (as required) to the procedures for design of high-mast luminaries and full-span sign support structures targeted to improve in-service performance.
报告类型：	科技报告