Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways
The vibration effect of urban rail transit has gained attention from both academia and the industry sector. Long Elastic Sleeper Track (LEST) is a new structure for vibration reduction which has recently been designed and applied to Chinese subways. However, little research has been devoted to its v...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/6209518 |
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| _version_ | 1832549980091449344 |
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| author | Xiaopei Cai Dacheng Li Yanrong Zhang Qian Miao Rixin Cui |
| author_facet | Xiaopei Cai Dacheng Li Yanrong Zhang Qian Miao Rixin Cui |
| author_sort | Xiaopei Cai |
| collection | DOAJ |
| description | The vibration effect of urban rail transit has gained attention from both academia and the industry sector. Long Elastic Sleeper Track (LEST) is a new structure for vibration reduction which has recently been designed and applied to Chinese subways. However, little research has been devoted to its vibration reduction effect. In this study, field tests were conducted during peak transit hours on Beijing Subway Line 15 to examine the vibration reduction effects of the common ballastless track and LEST on both straight and curved sections. The results demonstrate that although LEST increases the wheel-rail vertical forces, rail vertical displacements, and rail accelerations to some extent, these effects do not threaten subway operational safety, and vibrations of track bed and tunnel wall are positively mitigated. LEST has an obvious vibration reduction effect at frequencies above 40 Hz. In straight track, the vibration of bottom of the tunnel wall measured in one-third octave bands is reduced by 10.52 dB, while the vibration at point on the tunnel wall at 1.5 m height is reduced by 9.60 dB. For the curved track, the vibrations at those two points are reduced by 9.35 dB and 8.44 dB, respectively. This indicates that LEST reduces vibrations slightly more for the straight track than for the curved track. |
| format | Article |
| id | doaj-art-20c0a71404bd425594ffebcae8f9fe4f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-20c0a71404bd425594ffebcae8f9fe4f2025-02-03T06:07:55ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/62095186209518Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in SubwaysXiaopei Cai0Dacheng Li1Yanrong Zhang2Qian Miao3Rixin Cui4School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaSchool of Civil Engineering, Beijing Jiaotong University, Beijing 100044, ChinaThe vibration effect of urban rail transit has gained attention from both academia and the industry sector. Long Elastic Sleeper Track (LEST) is a new structure for vibration reduction which has recently been designed and applied to Chinese subways. However, little research has been devoted to its vibration reduction effect. In this study, field tests were conducted during peak transit hours on Beijing Subway Line 15 to examine the vibration reduction effects of the common ballastless track and LEST on both straight and curved sections. The results demonstrate that although LEST increases the wheel-rail vertical forces, rail vertical displacements, and rail accelerations to some extent, these effects do not threaten subway operational safety, and vibrations of track bed and tunnel wall are positively mitigated. LEST has an obvious vibration reduction effect at frequencies above 40 Hz. In straight track, the vibration of bottom of the tunnel wall measured in one-third octave bands is reduced by 10.52 dB, while the vibration at point on the tunnel wall at 1.5 m height is reduced by 9.60 dB. For the curved track, the vibrations at those two points are reduced by 9.35 dB and 8.44 dB, respectively. This indicates that LEST reduces vibrations slightly more for the straight track than for the curved track.http://dx.doi.org/10.1155/2018/6209518 |
| spellingShingle | Xiaopei Cai Dacheng Li Yanrong Zhang Qian Miao Rixin Cui Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways Shock and Vibration |
| title | Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways |
| title_full | Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways |
| title_fullStr | Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways |
| title_full_unstemmed | Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways |
| title_short | Experimental Study on the Vibration Control Effect of Long Elastic Sleeper Track in Subways |
| title_sort | experimental study on the vibration control effect of long elastic sleeper track in subways |
| url | http://dx.doi.org/10.1155/2018/6209518 |
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