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Train-Induced Vibrations on Embankments and in Buildings: Prediction and Validation of Some Models
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
Responsible organisation
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 [en]
building, embankment, environment, flexibility, model, phase
National Category
Building Technologies
Identifiers
URN: urn:nbn:se:kth:diva-4810OAI: oai:DiVA.org:kth-4810DiVA: diva2:14090
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
List of papers
1. Validation of an empirical model for prediction of train-induced ground vibrations
Open this publication in new window or tab >>Validation of an empirical model for prediction of train-induced ground vibrations
2006 (English)In: Soil Dynamics and Earthquake Engineering, ISSN 0267-7261, E-ISSN 1879-341X, Vol. 26, 983-990 p.Article in journal (Refereed) Published
Abstract [en]

This paper presents a validation of EnVib-01, an empirical model to predict train-induced ground vibrations in a preliminary design phase. The model is simple to use and gives a quick assessment of the magnitude and the distribution of the ground motion that can be expected in the vicinity of the track. It can be of use during planning of a new track or before allowing trains to run faster with heavier cargo on an existing railway line. The model has been validated from two field measurements in Sweden. The strengths and weaknesses of the model, which has shown promising results, are discussed.

Keyword
train, ground vibration, prediction, empirical model
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-9470 (URN)10.1016/j.soildyn.2006.03.005 (DOI)000241235900001 ()2-s2.0-33746860336 (Scopus ID)
Note
QC 20100921Available from: 2008-11-05 Created: 2008-11-05 Last updated: 2017-12-14Bibliographically approved
2. Prediction of train-induced vibrations inside buildings using transfer functions
Open this publication in new window or tab >>Prediction of train-induced vibrations inside buildings using transfer functions
2007 (English)In: Soil Dynamics and Earthquake Engineering, ISSN 0267-7261, E-ISSN 1879-341X, Vol. 27, no 2, 93-98 p.Article in journal (Refereed) Published
Abstract [en]

This article presents a study of the use of transfer functions to predict vibrations inside a building due to train-induced ground vibrations. It is proposed that knowing the transfer function of a building, the vibrations inside a similar building can be predicted given a known ground motion outside. A comparison has been conducted between predicted and measured vibrations inside a building in south-western Sweden due to freight and passenger trains. The transfer function was derived by using a stationary vibrating source. The average particle velocity (1 s-r.m.s.) inside the house was calculated with the transfer functions with an average error of -10%, -0.02mm/s. Prediction was achieved with a standard deviation of 23%, 0.06mm/s when no filtering of the data was used. Further work is needed to ascertain the accuracy of this method.

Keyword
train, ground vibration, prediction, transfer function, building
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-9471 (URN)10.1016/j.soildyn.2006.06.003 (DOI)000242516700001 ()2-s2.0-33750434869 (Scopus ID)
Note
QC 20100921Available from: 2008-11-05 Created: 2008-11-05 Last updated: 2017-12-14Bibliographically approved
3. Evaluation of track stiffness with a vibrator for prediction of train-induced displacement on railway embankments
Open this publication in new window or tab >>Evaluation of track stiffness with a vibrator for prediction of train-induced displacement on railway embankments
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.

Keyword
Displacement, Embankment, Flexibility, Phase, Prediction, Railway, Stiffness, Train
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-9472 (URN)10.1016/j.soildyn.2008.11.010 (DOI)000267246900001 ()2-s2.0-67349260119 (Scopus ID)
Note
QC 20100921. Uppdaterad från submitted till published (20100921).Available from: 2008-11-06 Created: 2008-11-06 Last updated: 2017-12-14Bibliographically approved
4. Identification of effective properties of the railway substructure in the low-frequency range using a heavy oscillating unit on the track
Open this publication in new window or tab >>Identification of effective properties of the railway substructure in the low-frequency range using a heavy oscillating unit on the track
2010 (English)In: Archive of applied mechanics (1991), ISSN 0939-1533, E-ISSN 1432-0681, Vol. 80, no 9, 959-968 p.Article in journal (Refereed) Published
Abstract [en]

As the demand for predictions of train-induced vibrations is increasing, it is essential that adequate parameters of the railway structure are given as input in the predictions. Gathering this information can be quite time-consuming and costly, especially when predictions are required for the low-frequency emission. This article presents a procedure for deriving the effective properties of the foundation under the sleepers of a railway track from measurements taken with a heavy oscillating unit on the track. The unit consists of two masses inside a modified freight car that exert a dynamic force in the range 3-30 Hz on one of the two axles. The ratio of force applied on the axle over the resulting response measured with an accelerometer is studied. The foundation of the sleepers is modelled using a frequency-dependent complex-valued dynamic stiffness.

Keyword
Embankment, Flexibility, Railway, Stiffness, Track, Train
National Category
Building Technologies
Identifiers
urn:nbn:se:kth:diva-9473 (URN)10.1007/s00419-009-0348-4 (DOI)000280226000001 ()2-s2.0-77957869462 (Scopus ID)
Note
QC 20100921. Uppdaterad från submitted till published (20100921).Available from: 2008-11-06 Created: 2008-11-06 Last updated: 2017-12-14Bibliographically approved

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