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dc.contributor.authorGarcia-Sanchez, David
dc.contributor.authorSañudo, Roberto
dc.contributor.authorMiranda, Marina
dc.contributor.authorTárrago, Nerea
dc.contributor.authorLenart, Stanislav
dc.date.accessioned2021-01-14T11:45:11Z
dc.date.available2021-01-14T11:45:11Z
dc.date.issued2021-02-15
dc.identifier.citationGarcia-Sanchez, David, Roberto Sañudo, Marina Miranda, Nerea Tárrago, and Stanislav Lenart. “Rail Expansion Devices and Maximum Dilation Length in Railway Bridges. An Experimental Study.” Engineering Structures 229 (February 2021): 111605. doi:10.1016/j.engstruct.2020.111605.en
dc.identifier.issn0141-0296en
dc.identifier.urihttp://hdl.handle.net/11556/1053
dc.description.abstractThe use of rail expansion devices (RED) interrupts the continuity of the welded rail, causing an irregularity with the consequent reduction in comfort, but with the benefit of a significant stress reduction in the rails. Currently the Spanish Railway Administrator uses three types of RED according to their range: 300 (small RED), 600 (medium RED) and 1200 mm (large RED) for all railway structures in the network. Their use has led to the construction of railway bridges and viaducts of maximum free expansion length of just over 1100 m. Development of new high-speed railway lines increasingly demands longer structures. Thus, the maximum allowed free expansion length should be increased. This problem can be faced from two fronts: (1) the improvement of the performance of REDs by developing new designs and (2) the enhanced prediction of the bridges and viaducts real movements caused by retraction, creep and temperature. It is precisely this last approach that has been developed by analysing and reviewing some existing structures. Forty-four bridges and viaducts on the Spanish High- Speed Railway network. Specifically, the railway Lines Madrid-Barcelona, Cordoba-Malaga and Madrid- Valladolid, have been analysed to know the degree of strain of the existing REDs. With these measurements, the possibility of increasing the length of maximum free expansion of the deck has been examined and it has been proven to be possible as predicted strains were higher than the measured ones. Recommendations given have served to developed longer railway structures in Spain.en
dc.description.sponsorshipThe authors would like to thank ADIF, Louis Berger (a WSP Company) for their help and availability during the time when measurements and the study were carried out. The second author would like to thanks to the Spanish Ministry of Science, Innovation and Universities, (Call for Grants 2018, RETOS INVESTIGACION) for his support with the project reference RTI2018- 096809-J-I00 within the Spanish programme of Research Development and Innovation oriented to Challenges for Society (Young Researches, JIN Type). The fifth author acknowledges the financial support from the Ministry of Infrastructure of the Republic of Slovenia, Slovenian Research Agency (project V2-1740).en
dc.language.isoengen
dc.publisherElsevier Ltden
dc.titleRail expansion devices and maximum dilation length in railway bridges. An experimental studyen
dc.typearticleen
dc.identifier.doi10.1016/j.engstruct.2020.111605en
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsRail Expansion device (RED)en
dc.subject.keywordsHigh speed lineen
dc.subject.keywordsFree expansionen
dc.subject.keywordsRestricted expansionen
dc.subject.keywordsRail thermic stressen
dc.subject.keywordsBridgeen
dc.subject.keywordsViaducten
dc.journal.titleEngineering Structuresen
dc.page.initial111605en
dc.volume.number229en


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