Application of viscoelastic dampers for reducing dynamic response of high-speed railway bridges

A tétel rövid nézete
dc.contributor.authorTahiri, Mohamed
dc.contributor.authorKhamlichi, Abdellatif
dc.contributor.authorBezzazi, Mohammed
dc.contributor.statusnemhu_HU
dc.date.accessioned2021-04-06T11:03:40Z
dc.date.available2021-04-06T11:03:40Z
dc.date.issued2020-08-01
dc.description.abstractDue to the extensive development of high-speed railway lines which are operating at increasing velocities, the dynamic performance of railway bridges has become an important issue of scientific research. The aim of this study is to investigate the possibility of reducing the vertical acceleration and displacement of pre-stressed reinforced concrete bridges beams by using passive nonlinear viscoelastic dampers to retrofit them. The proposed solution is based on connecting the dampers directly to the abutments and the bottom surface of the bridge deck with an eccentricity between the neutral axis of the bridge and the contact point of the viscoelastic dampers. First, the dampers are modeled through the concept of linearized fractional derivatives to obtain energetic equivalent linear viscoelastic dampers. Optimization of the configuration of these dampers was performed then as function of the orientation angle and the eccentricity. Considering two bridges having different length that were studied in the literature with other systems of damping, it was found that the best orientation angle of dampers is close to 60°. It was found also that, in order to satisfy Eurocode 1 requirements, the total equivalent damping coefficient for the actual damping system is less than half of that required for systems using auxiliary beam to fix dampers, which indicates higher efficiency of the proposed solution.hu_HU
dc.identifier.doi10.1556/1848.2020.20004hu_HU
dc.identifier.issn2062-0810
dc.identifier.issue2hu_HU
dc.identifier.jtitleInternational Review of Applied Sciences and Engineering
dc.identifier.urihttp://hdl.handle.net/2437/305244
dc.identifier.urlhttps://akjournals.com/view/journals/1848/11/2/article-p95.xmlhu_HU
dc.identifier.volume11hu_HU
dc.language.isoenhu_HU
dc.publisherAkadémiai Kiadóhu_HU
dc.subjecthigh-speed railway bridgeshu_HU
dc.subjectfractional derivativehu_HU
dc.subjectviscoelastic dampershu_HU
dc.subjectenergyhu_HU
dc.subjectvibration controlhu_HU
dc.subjectresonancehu_HU
dc.titleApplication of viscoelastic dampers for reducing dynamic response of high-speed railway bridgeshu_HU
Fájlok
Eredeti köteg (ORIGINAL bundle)
Megjelenítve 1 - 1 (Összesen 1)
Nem elérhető
Név:
_International_Review_of_Applied_Sciences_and_Engineering__Application_of_viscoelastic_dampers_for_reducing_dynamic_response_of_high_speed_railway_bridges.pdf
Méret:
2.01 MB
Formátum:
Adobe Portable Document Format
Letöltés
Engedélyek köteg
Megjelenítve 1 - 1 (Összesen 1)
Nem elérhető
Név:
license.txt
Méret:
2.57 KB
Formátum:
Item-specific license agreed upon to submission
Leírás:
Letöltés
Gyűjtemények
International Review of Applied Sciences and Engineering