The report presents the findings of field studies into the impactive loading generated by heavy haul coal traffic on a prestressed concrete girder bridge. The studies were conducted on Denison Creek bridge in Central Queensland, which carries a single ballasted track of continuously welded rail on prestressed concrete sleepers. Various defects were cut into one rail to model real defects such as wheel flats, wheel burns on rails and broken or misaligned rails. Impacts from trains were measured via strain gauge readings taken at girder soffits. The readings show that impacts may often exceed code values. The report discusses the implications for bridge design, referring particularly to partially prestressed structures.
Effects of Rail Defects on Prestressed Concrete Bridge Live Load Stresses
1988
53 pages
Report
No indication
English
Highway Engineering , Construction Equipment, Materials, & Supplies , Railroad Transportation , Stresses , Railroad bridges , Loads(Forces) , Prestressed concrete , Girder bridges , Cargo transportation , Coal , Defects , Impacts , Design criteria , Strain gages , Measurement , Tables(Data) , Australia , Foreign technology , Superstructures , Rails
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