Modelling tyre-road contact stresses in pavement design and analysis

dc.contributor.authorDe Beer, M.
dc.contributor.authorVan Rensburg, Y.
dc.contributor.editorBehrens, Roger.
dc.contributor.editorCameron, Bill.
dc.contributor.editorFroschauer, Pauline.
dc.contributor.emailJMaina@csir.co.zaen_US
dc.contributor.otherSouthern African Transport Conference (32nd : 2013 : Pretoria, South Africa)
dc.contributor.otherMinister of Transport, South Africa
dc.contributor.upauthorMaina, J.W. (James)
dc.date.accessioned2014-02-04T10:18:48Z
dc.date.available2014-02-04T10:18:48Z
dc.date.created2013-07-08
dc.date.issuedJuly 2013en_US
dc.descriptionThis paper was transferred from the original CD ROM created for this conference. The material was published using Adobe Acrobat 10.1.0 Technology. The original CD ROM was produced by Document Transformation Technologies Postal Address: PO Box 560 Irene 0062 South Africa. Tel.: +27 12 667 2074 Fax: +27 12 667 2766 E-mail: nigel@doctech URL: http://www.doctech.co.zaen_US
dc.description.abstractPaper presented at the 32nd Annual Southern African Transport Conference 8-11 July 2013 "Transport and Sustainable Infrastructure", CSIR International Convention Centre, Pretoria, South Africa.en_US
dc.description.abstractGrowing traffic volumes, increasing construction and maintenance costs continually drive for more innovative approaches and methodologies towards sustainable road infrastructure. At the current price levels of around R6000 per metric tonne, bitumen, as a “raw” product, is by far the most costly element in flexible pavements, for example compared to Crushed stone, which is at approximately R170 per metric tonne. Since the asphalt layer or relatively thin bituminous seal acts as the stress barrier between rolling tyres and the road structure it needs to be durable so as to withstand current traffic loading and hence contact stresses, given the environmental forces also acting on it. For road infrastructure to perform as expected, it is important to optimize road pavement design, especially close to the surface of the pavement requiring accurate modelling of tyre-road contact stresses. The aim of this paper is to demonstrate modern ways to idealise tyre-road interaction based on Stress-In-Motion (SIM) results, in particular the way in which numerical analyses are used (and developed) to address non-uniformly distributed tyre contact stresses on the surface of the pavements. A tyre model is demonstrated whereby the SIM measured contact stress distribution is idealised with a multitude of circular and rectangular shapes, mimicking the non-uniform characteristics of the contact stresses inside the tyre contact patch. An example, in terms of pavement layer life and strain energy of distortion, is given highlighting the effects of different tyre-road models on a typical flexible road structure, compared to the traditional circular shape model of a single uniformly distributed contact stress (1D).en_US
dc.description.librarianmv2014en_US
dc.format.extent10 pagesen_US
dc.format.extent10 p.en_US
dc.format.mediumPDFen_US
dc.identifier.isbn978-1-920017-62-0
dc.identifier.urihttp://hdl.handle.net/2263/33272
dc.language.isoenen_US
dc.relation.ispartofSATC 2013en_US
dc.relation.ispartofseries2B_de Beeren_US
dc.rightsUniversity of Pretoriaen_US
dc.subjectGrowing traffic volumesen_US
dc.subjectSustainable road infrastructureen_US
dc.subjectTyre-road interactionen_US
dc.subjectPavement design and layouten_US
dc.subject.lcshTransportationen_US
dc.subject.lcshTransportation -- Africaen_US
dc.subject.lcshTransportation -- Southern Africaen_US
dc.titleModelling tyre-road contact stresses in pavement design and analysisen_US
dc.typePresentationen_US

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