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Fatigue Assessment of Steel Box Girder Based on Measured Stress of Health Monitoring System

Wang, C ; Zhong, J-Z ; Zhu, H-P

Wuhan Ligong Daxue Xuebao (Journal of Wuhan University of Technology), 2012-12, Vol.34 (12), p.103-107 [Periódico revisado por pares]

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Título:
Fatigue Assessment of Steel Box Girder Based on Measured Stress of Health Monitoring System
Autor: Wang, C ; Zhong, J-Z ; Zhu, H-P
Assuntos: Assessments ; Box girders ; Categories ; Fatigue (materials) ; Fatigue failure ; Health monitoring (engineering) ; Stresses ; Structural steels
É parte de: Wuhan Ligong Daxue Xuebao (Journal of Wuhan University of Technology), 2012-12, Vol.34 (12), p.103-107
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: This paper presented a method of fatigue assessment of steel box girder based on measured stress of health monitoring system. First, the day stress spectrum was acquired through statistically analyzing the measured stress time-history data based rain-flow counting method, and then the standard day stress spectrum can be obtained by statistical average analysis of a by multiple day stress spectrum. Based on linear cumulative damage criterion and fatigue strength curves of all kinds of detail category of steel box girder, its fatigue assessment is analyzed, and the result is updated with the change of transport condition. The proposed method is used to one bridge. And the result shows that the fatigue damage will occur at connection part between U-rib and diaphragm, so it is necessary to strengthen maintenance in the place.
Idioma: Chinês

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