Train-induced vibrations on urban metro and tram turnouts

Bruni, S; Anastasopoulos, I; Alfi, S; Van Leuven, A; Apostolou, M; Gazetas, G

dc.contributor.author	Bruni, S	en
dc.contributor.author	Anastasopoulos, I	en
dc.contributor.author	Alfi, S	en
dc.contributor.author	Van Leuven, A	en
dc.contributor.author	Apostolou, M	en
dc.contributor.author	Gazetas, G	en
dc.date.accessioned	2014-03-01T01:32:13Z
dc.date.available	2014-03-01T01:32:13Z
dc.date.issued	2009	en
dc.identifier.issn	0733-947X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20084
dc.subject	Dynamic analysis	en
dc.subject	Maintenance	en
dc.subject	Railroad tracks	en
dc.subject	Railroad trains	en
dc.subject	Soil-structure interaction	en
dc.subject	Vibration	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Transportation Science & Technology	en
dc.subject.other	Analysis method	en
dc.subject.other	Finite element models	en
dc.subject.other	Impact loadings	en
dc.subject.other	Induced vibrations	en
dc.subject.other	Multi-body models	en
dc.subject.other	Noise nuisance	en
dc.subject.other	Nonuniform	en
dc.subject.other	Parametric analysis	en
dc.subject.other	Railroad trains	en
dc.subject.other	Railway track	en
dc.subject.other	Simplified models	en
dc.subject.other	Three dimensional finite elements	en
dc.subject.other	Track irregularity	en
dc.subject.other	Train passages	en
dc.subject.other	Tram networks	en
dc.subject.other	Vibration	en
dc.subject.other	Vibration level	en
dc.subject.other	Wheel flanges	en
dc.subject.other	Wheel-rail contacts	en
dc.subject.other	Dynamic analysis	en
dc.subject.other	Flanges	en
dc.subject.other	Locomotives	en
dc.subject.other	Maintenance	en
dc.subject.other	Noise pollution	en
dc.subject.other	Rail laying	en
dc.subject.other	Railroad cars	en
dc.subject.other	Railroad tracks	en
dc.subject.other	Railroads	en
dc.subject.other	Soil structure interactions	en
dc.subject.other	Soils	en
dc.subject.other	Vehicle wheels	en
dc.subject.other	Dynamic response	en
dc.subject.other	dynamic analysis	en
dc.subject.other	dynamic response	en
dc.subject.other	finite element method	en
dc.subject.other	maintenance	en
dc.subject.other	numerical model	en
dc.subject.other	parameterization	en
dc.subject.other	railway transport	en
dc.subject.other	soil-structure interaction	en
dc.subject.other	urban transport	en
dc.subject.other	vibration	en
dc.title	Train-induced vibrations on urban metro and tram turnouts	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)TE.1943-5436.0000008	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000008	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	In contrast to standard track, where train-induced vibrations are mainly related to track irregularities, the dynamic response of turnouts is dominated by the nonuniform geometry of wheel-rail contact and variations in track flexibility. Such peculiarities are responsible for the development of strong vibrations during train passage. At the point of rail intersection (heart), where a gap is unavoidable to provide the necessary wheel flange clearance, the system is subjected to severe impact loading, critical for the design and maintenance of railway tracks. Especially in the case of urban turnouts, the vibration levels are also directly related to the exerted noise nuisance. This paper presents two analysis methods to simulate train-turnout interaction. The first is based on a multibody model of the trainset and of wheel-rail contact, utilizing a simplified finite element model for the turnout. The second focuses on the details of the turnout, which is modeled with three-dimensional finite elements, utilizing a simplified model to compute impact loading due to wheel passage over the flange-way gap. The two models are validated against line measurements on three different urban metro and tram networks. A parametric analysis is conducted to investigate the role of soil-structure interaction, which is shown be important for the dynamic response of the system. © 2009 ASCE.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Transportation Engineering	en
dc.identifier.doi	10.1061/(ASCE)TE.1943-5436.0000008	en
dc.identifier.isi	ISI:000267055200002	en
dc.identifier.volume	135	en
dc.identifier.issue	7	en
dc.identifier.spage	397	en
dc.identifier.epage	405	en