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Evaluation of track stiffness with a vibrator for prediction of train-induced displacement on railway embankments
ÅF-Infrastruktur AB/Ingemansson.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
2009 (English)In: Soil Dynamics and Earthquake Engineering, ISSN 0267-7261, E-ISSN 1879-341X, Vol. 29, no 8, 1187-1197 p.Article in journal (Refereed) Published
Abstract [en]

A measuring car, the rolling stiffness measuring vehicle (RSMV), has been developed to investigate track conditions. The investigation described in this paper firstly attempts to understand whether the point flexibility of the track, i.e., the track-embankment-subsoil system, can be obtained by simultaneously measuring the force applied to an axle of the measuring car and the resulting acceleration response. Secondly, it attempts to determine the physical properties of the track by modelling it as a Bernoulli-Euler beam oil a Kelvin foundation. The final part of the paper investigates the possibility of predicting displacements on a railway embankment based oil the physical properties obtained after a train passage. Results from two sites in Sweden, Kumla and Kåhög, have been used. Investigations give encouraging results. However, as seen here, it can be difficult to analyse and obtain parameters if the resonance frequency of the system is low. The peak particle displacement of the ballast on the railway embankment was achieved with fair accuracy for both Kumla and Kåhög using the results from the accelerometer on the RSMV.

Place, publisher, year, edition, pages
2009. Vol. 29, no 8, 1187-1197 p.
Keyword [en]
Displacement, Embankment, Flexibility, Phase, Prediction, Railway, Stiffness, Train
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-9472DOI: 10.1016/j.soildyn.2008.11.010ISI: 000267246900001Scopus ID: 2-s2.0-67349260119OAI: oai:DiVA.org:kth-9472DiVA: diva2:114127
Note
QC 20100921. Uppdaterad från submitted till published (20100921).Available from: 2008-11-06 Created: 2008-11-06 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Train-Induced Vibrations on Embankments and in Buildings: Prediction and Validation of Some Models
Open this publication in new window or tab >>Train-Induced Vibrations on Embankments and in Buildings: Prediction and Validation of Some Models
2008 (English)Doctoral thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH, 2008. xvi, 54 p.
Series
Trita-JOB PHD, ISSN 1650-9501 ; 1010
Keyword
building, embankment, environment, flexibility, model, phase
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-4810 (URN)
Public defence
2008-06-10, Sal D3, KTH, Lindstedtsvägen, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC 20100921Available from: 2008-11-19 Created: 2008-11-19 Last updated: 2010-09-21Bibliographically approved

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