The effects of fastening strength on the variation in stress-free temperature in continuous welded rail

dc.contributor.authorGrabe, Petrus Johannes
dc.contributor.authorJacobs, Dylan
dc.contributor.emailhannes.grabe@up.ac.zaen_ZA
dc.date.accessioned2016-08-11T05:26:28Z
dc.date.available2016-08-11T05:26:28Z
dc.date.issued2016-03
dc.description.abstractContinuous welded rail (CWR) is a fundamental component of any modern track structure and has several advantages over former types of rail joining processes. The reduction in maintenance and related costs has become the most attractive property of CWR although careful monitoring and maintenance of CWR is essential to ensure safe train operations. Management of the stress-free temperature (SFT) of any section of CWR in order to prevent rail breaks and lateral buckling that could lead to derailments is a vital duty of the track maintenance team. Variations in the SFT are influenced by a number of external factors. This paper describes experimental field and laboratory tests carried out to investigate to what extent the fastening strength influences the variation in SFT in CWR track on Fist fastenings and two types of pads. The research established a nonlinear relationship between clamping force and rail movement through the fasteners as well as a strongly linear relationship between clamping force and the variation in SFT. It is also demonstrated that although the friction coefficient of the pad has an influence on rail movement through the fastener, the primary factor influencing SFT variations is the clip force. This paper concludes by quantifying the relationship between clamping force and the expected variation in SFT with clear guidelines on the management of the SFT in CWR.en_ZA
dc.description.departmentCivil Engineeringen_ZA
dc.description.librarianhb2016en_ZA
dc.description.urihttp://pif.sagepub.comen_ZA
dc.identifier.citationGrabe, PJ & Jacobs, D 2016, 'The effects of fastening strength on the variation in stress-free temperature in continuous welded rail', Proceedings of the Institution of Mechanical Engineers, Part F : Journal of Rail and Rapid Transit, vol. 230, no. 3, pp. 840-851.en_ZA
dc.identifier.issn0954-4097 (print)
dc.identifier.issn2041-3017 (online)
dc.identifier.other10.1177/0954409715570715
dc.identifier.urihttp://hdl.handle.net/2263/56250
dc.language.isoenen_ZA
dc.publisherSageen_ZA
dc.rights© 2016 by Sage Publicationsen_ZA
dc.subjectRailway tracken_ZA
dc.subjectFastening systemen_ZA
dc.subjectTemperature effectsen_ZA
dc.subjectRail stressen_ZA
dc.subjectStress-free temperature (SFT)en_ZA
dc.subjectContinuous welded rail (CWR)en_ZA
dc.subject.otherEngineering, built environment and information technology articles SDG-09
dc.subject.otherSDG-09: Industry, innovation and infrastructure
dc.titleThe effects of fastening strength on the variation in stress-free temperature in continuous welded railen_ZA
dc.typePostprint Articleen_ZA

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