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Pre-design of laterally supported stair steps

2019Journal article Open access
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dc.contributor.authorSantos, José
dc.contributor.authorAndrade, Pedro
dc.contributor.authorEscórcio, Patrícia
dc.date.accessioned2021-06-11T11:02:28Z
dc.date.available2021-06-11T11:02:28Z
dc.date.issued2019
dc.description.abstractIt is becoming increasingly common to design monumental staircases and their steps with elevated stiffness and low mass, obtaining high natural frequencies, off the range of frequencies that are excitable by pedestrians. However, this sometimes leads to unacceptable levels of vibration, with impulsive responses. In many cases the dynamic behaviour of steps is almost independent from the rest of the staircase, causing a phenomenon de signated as local vibrations, which could be much more severe than the global vibrations of the staircase. In order to avoid this problem, this paper presents a simplified expression to pre-design stair steps which guarantee that excessive vibrations will not occur, without the need to perform a dynamic analysis. The ex pression was deduced based on the results of an experimental campaign, several numerical analyses and a theoretical analysis. During this study it was necessary to define an acceptable limit of vibrations specific for this type of vibration, which affects mainly the feet of pedestrians. The expression deduced is easy to apply because it depends only of vertical stiffness of the step. Finally, the pre-design expression is also applied to the staircase used in the experimental campaign, and it was concluded that it would be easy to avoid excessive vibrations, with a negligible cost increase.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSantos, J., Andrade, P., & Escórcio, P. (2019). Pre-design of laterally supported stair steps. Engineering Structures, 182, 51-61. 10.1016/j.engstruct.2018.12.018pt_PT
dc.identifier.doi10.1016/j.engstruct.2018.12.018pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.13/3469
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectVibrationspt_PT
dc.subjectImpulsive responsept_PT
dc.subjectFoot discomfortpt_PT
dc.subjectAcceptance criteriapt_PT
dc.subjectNumerical simulationspt_PT
dc.subject.pt_PT
dc.subjectFaculdade de Ciências Exatas e da Engenhariapt_PT
dc.titlePre-design of laterally supported stair stepspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage61pt_PT
oaire.citation.startPage51pt_PT
oaire.citation.titleEngineering Structurespt_PT
oaire.citation.volume182pt_PT
person.familyNameMARTINS NETO DOS SANTOS
person.familyNameEscórcio
person.givenNameJOSÉ MANUEL
person.givenNamePatrícia Carlota Costa
person.identifier.ciencia-idDE1C-64E5-4284
person.identifier.ciencia-idF41E-9118-47EE
person.identifier.orcid0000-0002-0038-162X
person.identifier.ridA-8313-2016
person.identifier.scopus-author-id54997983600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationabd4b512-8c9b-428c-be89-229c06afb6b8
relation.isAuthorOfPublication51688d6c-d5b7-495d-beab-85bc284ce3d7
relation.isAuthorOfPublication.latestForDiscovery51688d6c-d5b7-495d-beab-85bc284ce3d7

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