A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration
This study used the 2D boundary element method in time domain to examine the screening effectiveness of open trenches on reducing vibration generated by a high-speed train. The parameters included configurations of the trench, train speed, the distance between the source and the trench, and the Pois...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2014/489090 |
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| _version_ | 1832555467365154816 |
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| author | Chih-hung Chiang Pei-hsun Tsai |
| author_facet | Chih-hung Chiang Pei-hsun Tsai |
| author_sort | Chih-hung Chiang |
| collection | DOAJ |
| description | This study used the 2D boundary element method in time domain to examine the screening effectiveness of open trenches on reducing vibration generated by a high-speed train. The parameters included configurations of the trench, train speed, the distance between the source and the trench, and the Poisson’s ratio of the soil. A reducing displacement level (in dB scale) was defined and used to evaluate the screening effectiveness of a wave barrier. The maximal reducing displacement level reached 25 dB when an open trench was used as a wave barrier. The depth of an open trench is a main influential parameter of screening effectiveness. The cutoff frequency of the displacement spectrum increases with decreasing trench depth. The maximal screening effectiveness occurs when the depth is 0.3-0.4 Rayleigh wavelength. Using an open trench as a wave barrier can reduce 10–25 dB of vibration amplitude at frequencies between 30 and 70 Hz. A considerable increase in screening effectiveness of the open trench was observed from 30 to 70 Hz, which matches the main frequencies of vibration induced by Taiwan High Speed Rail. The influence of trench width on screening effectiveness is nonsignificant except for frequencies from 30 to 40 Hz. Poisson’s ratio has various effects on the reduction of vibration at frequencies higher than 30 Hz. |
| format | Article |
| id | doaj-art-5cc0c333c82a44ce943734048a995d6b |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-5cc0c333c82a44ce943734048a995d6b2025-02-03T05:48:09ZengWileyShock and Vibration1070-96221875-92032014-01-01201410.1155/2014/489090489090A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced VibrationChih-hung Chiang0Pei-hsun Tsai1Department of Construction Engineering, Chaoyang University of Technology, 168 Jifong E. Road, Wufeng District, Taichung 41349, TaiwanDepartment of Construction Engineering, Chaoyang University of Technology, 168 Jifong E. Road, Wufeng District, Taichung 41349, TaiwanThis study used the 2D boundary element method in time domain to examine the screening effectiveness of open trenches on reducing vibration generated by a high-speed train. The parameters included configurations of the trench, train speed, the distance between the source and the trench, and the Poisson’s ratio of the soil. A reducing displacement level (in dB scale) was defined and used to evaluate the screening effectiveness of a wave barrier. The maximal reducing displacement level reached 25 dB when an open trench was used as a wave barrier. The depth of an open trench is a main influential parameter of screening effectiveness. The cutoff frequency of the displacement spectrum increases with decreasing trench depth. The maximal screening effectiveness occurs when the depth is 0.3-0.4 Rayleigh wavelength. Using an open trench as a wave barrier can reduce 10–25 dB of vibration amplitude at frequencies between 30 and 70 Hz. A considerable increase in screening effectiveness of the open trench was observed from 30 to 70 Hz, which matches the main frequencies of vibration induced by Taiwan High Speed Rail. The influence of trench width on screening effectiveness is nonsignificant except for frequencies from 30 to 40 Hz. Poisson’s ratio has various effects on the reduction of vibration at frequencies higher than 30 Hz.http://dx.doi.org/10.1155/2014/489090 |
| spellingShingle | Chih-hung Chiang Pei-hsun Tsai A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration Shock and Vibration |
| title | A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration |
| title_full | A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration |
| title_fullStr | A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration |
| title_full_unstemmed | A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration |
| title_short | A Numerical Study of the Screening Effectiveness of Open Trenches for High-Speed Train-Induced Vibration |
| title_sort | numerical study of the screening effectiveness of open trenches for high speed train induced vibration |
| url | http://dx.doi.org/10.1155/2014/489090 |
| work_keys_str_mv | AT chihhungchiang anumericalstudyofthescreeningeffectivenessofopentrenchesforhighspeedtraininducedvibration AT peihsuntsai anumericalstudyofthescreeningeffectivenessofopentrenchesforhighspeedtraininducedvibration AT chihhungchiang numericalstudyofthescreeningeffectivenessofopentrenchesforhighspeedtraininducedvibration AT peihsuntsai numericalstudyofthescreeningeffectivenessofopentrenchesforhighspeedtraininducedvibration |