Repository logo
 
Publication

Three-dimensional modelling of slab-track systems based on dynamic experimental tests

2021-11Journal article Restricted access
Simple item page
dc.contributor.authorThölken, D.
dc.contributor.authorAbdalla Filho, João Elias
dc.contributor.authorPombo, João
dc.contributor.authorSainz-Aja, J.
dc.contributor.authorCarrascal, I.
dc.contributor.authorPolanco, J.
dc.contributor.authorEsen, A.
dc.contributor.authorLaghrouche, O.
dc.contributor.authorWoodward, P.
dc.date.accessioned2021-11-02T10:22:33Z
dc.date.available2021-11-02T10:22:33Z
dc.date.issued2021-11
dc.description.abstractThe accurate computational modelling of railway systems is crucial for analysis and design, which allows for excellent and enduring performance of such systems. It is capable of providing the industry with data for improving speed, comfort, load capacity and reliability. Further, as accurate solutions serve as an aid to improve railway systems, they contribute to quality services, social welfare, cost effectiveness and sustainability. An important component of a railway system is the track, which, in general, requires high investments for construction and maintenance. This work develops calibrated three-dimensional (3D) Finite Element (FE) models for slab track systems which can be employed for analysis and design with great level of reliability. These models are developed based on full-scale dynamic tests performed under the application of loads which simulate the passage of high-speed trains. The components considered are the rails, rail pads, slab track, grout, Hydraulicaly Bonded Layer (HBL), Frost Protection Layer (FPL) and subgrade. The FE models are built and calibrated in order to reproduce the measured displacement and acceleration test results. Due to the uncertainties in some material properties, a parametric analysis is also performed to establish to which material characteristics of the system the model is more sensitive to. It has been found that the Young’s moduli for the FPL layer and subgrade are the most important parameters. Further, the stiffness properties of rail pads play a paramount role in the accuracy of the model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationTHÕLKEN, D.; [et al] – Three-dimensional modelling of slab-track systems based on dynamic experimental tests. Transportation Geotechnics. ISSN 2214-3912. Vol. 31 (2021), pp. 1-12pt_PT
dc.identifier.doi10.1016/j.trgeo.2021.100663pt_PT
dc.identifier.issn2214-3912
dc.identifier.urihttp://hdl.handle.net/10400.21/13942
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationUIDB/ 50022/2020 - FCT through IDMEC, under LAETApt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S2214391221001537pt_PT
dc.subjectRailway dynamicspt_PT
dc.subjectSlab-trackspt_PT
dc.subjectFull-scale testspt_PT
dc.subjectDynamic finite element modellingpt_PT
dc.subjectParametric analysispt_PT
dc.titleThree-dimensional modelling of slab-track systems based on dynamic experimental testspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage12pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleTransportation Geotechnicspt_PT
oaire.citation.volume31pt_PT
person.familyNameAbdalla Filho
person.familyNamePombo
person.givenNameJoão Elias
person.givenNameJoão
person.identifier.ciencia-id3E1A-F8C1-9B8D
person.identifier.orcid0000-0002-0560-2890
person.identifier.orcid0000-0002-5877-1989
person.identifier.ridB-9140-2013
person.identifier.scopus-author-id16022941000
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication56140977-2167-4c82-b864-5e613540621c
relation.isAuthorOfPublication4b7bfa25-4662-4995-8146-4b45c39ffc53
relation.isAuthorOfPublication.latestForDiscovery56140977-2167-4c82-b864-5e613540621c

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Three-dimensional_JPombo.pdf
Size:
5.95 MB
Format:
Adobe Portable Document Format
Download

Collections

ISEL - Eng. Mecan. - Artigos