Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | Faculty of Construction and Environment | en_US |
| dc.contributor.advisor | Chau, K. T. (CEE) | - |
| dc.creator | Cheng, Ka Man | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/9524 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | - |
| dc.rights | All rights reserved | en_US |
| dc.title | Field measurements and analysis of surface rail induced vertical ground vibrations | en_US |
| dcterms.abstract | In Hong Kong, buildings are built close to the rail or even on top on the rail station. However, vibrations from moving trains may cause damage to the adjacent structures, unwanted vibration and noise to the public. The study of vibration induced by surface train is important to identify the amplitudes and dominant frequencies of the vibration. Accurate prediction can help the rolling stock, rail and building designers to minimize the vibration and improve the building vibration mitigation systems. Analytical model studied in this paper can help designer to predict the vibration easily without building up a complex numerical model. To study the characteristics of surface train induced vertical ground vibration field measurements were carried out in Pak Shek Kwok, Hong Kong. It is affected by factors including: (a) train type, (b) distance of observation from the rail and (c) location of observation. The analytical model proposed by Weitsman (1970) and Krylov & Ferguson (1994) were reviewed in this paper. Using the same parameters given in Krylov & Ferguson (1994), different results were obtained. FFT output frequency, number of sleepers considered, inaccurate approximated equation to calculate the non-contact distance, undefined vibration spectra unit, and uncertainties in soil parameters contribute to the inaccuracies of the prediction of ground vibration of Krylov & Ferguson (1994) models. This paper identified the factors that contribute to the prediction and not mentioned in Krylov & Ferguson study. Directions of future study is proposed such as to review and standardize the output frequency of FFT , limit the number of sleepers considered, and create a more accurate estimated equation to calculate contactless distance. | en_US |
| dcterms.extent | ix, 65 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2017 | en_US |
| dcterms.educationalLevel | M.Sc. | en_US |
| dcterms.educationalLevel | All Master | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.LCSH | Railroad trains -- Vibration | en_US |
| dcterms.LCSH | Buildings -- Vibration | en_US |
| dcterms.LCSH | Vibration -- Measurement | en_US |
| dcterms.accessRights | restricted access | en_US |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 991022142757403411.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 1.7 MB | Adobe PDF | View/Open |
Copyright Undertaking
As a bona fide Library user, I declare that:
- I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
- I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
- I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.
By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.
Please use this identifier to cite or link to this item:
https://theses.lib.polyu.edu.hk/handle/200/9524