Subway Embedded Track Geometric Irregularity Safety Limits
Abstract A coupling dynamic model of a subway train and an embedded track is established to study the safety limits of track irregularities. The simulated vehicle system was a 74-degrees of freedom multi-rigid body model, and the rail was a Timoshenko beam. The slab was a three-dimensional solid fin...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2021-10-01
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| Series: | Chinese Journal of Mechanical Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s10033-021-00614-y |
| _version_ | 1818425679622963200 |
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| author | Yuxiang Zhang Jian Han Huilai Song Yu Liu |
| author_facet | Yuxiang Zhang Jian Han Huilai Song Yu Liu |
| author_sort | Yuxiang Zhang |
| collection | DOAJ |
| description | Abstract A coupling dynamic model of a subway train and an embedded track is established to study the safety limits of track irregularities. The simulated vehicle system was a 74-degrees of freedom multi-rigid body model, and the rail was a Timoshenko beam. The slab was a three-dimensional solid finite element model. The sensitive wavelength irregularity was first studied, and then the safety limit of the sensitive wavelength was analyzed. The wheel-rail lateral force exhibited a substantial effect on the track alignment and gauge irregularity safety limit. The wheel-rail vertical force and the rate of wheel load reduction significantly affected the height and cross-level irregularity safety limit. The results demonstrate that the safety limits of the alignment, gauge, height, and cross-level embedded track geometric irregularity are 5.3 mm, [− 10.5, 8] mm, 5.6 mm, and 6 mm, respectively. |
| first_indexed | 2024-12-14T14:17:46Z |
| format | Article |
| id | doaj.art-ce5b21a8a4c84f4390b0c86d13d08f94 |
| institution | Directory Open Access Journal |
| issn | 1000-9345 2192-8258 |
| language | English |
| last_indexed | 2024-12-14T14:17:46Z |
| publishDate | 2021-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Chinese Journal of Mechanical Engineering |
| spelling | doaj.art-ce5b21a8a4c84f4390b0c86d13d08f942022-12-21T22:58:10ZengSpringerOpenChinese Journal of Mechanical Engineering1000-93452192-82582021-10-0134111010.1186/s10033-021-00614-ySubway Embedded Track Geometric Irregularity Safety LimitsYuxiang Zhang0Jian Han1Huilai Song2Yu Liu3School of Economics and Management, Southwest Jiaotong UniversitySchool of Mechanical Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversitySchool of Civil Engineering, Southwest Jiaotong UniversityAbstract A coupling dynamic model of a subway train and an embedded track is established to study the safety limits of track irregularities. The simulated vehicle system was a 74-degrees of freedom multi-rigid body model, and the rail was a Timoshenko beam. The slab was a three-dimensional solid finite element model. The sensitive wavelength irregularity was first studied, and then the safety limit of the sensitive wavelength was analyzed. The wheel-rail lateral force exhibited a substantial effect on the track alignment and gauge irregularity safety limit. The wheel-rail vertical force and the rate of wheel load reduction significantly affected the height and cross-level irregularity safety limit. The results demonstrate that the safety limits of the alignment, gauge, height, and cross-level embedded track geometric irregularity are 5.3 mm, [− 10.5, 8] mm, 5.6 mm, and 6 mm, respectively.https://doi.org/10.1186/s10033-021-00614-yEmbedded trackIrregularitySensitive wavelengthSafety limit |
| spellingShingle | Yuxiang Zhang Jian Han Huilai Song Yu Liu Subway Embedded Track Geometric Irregularity Safety Limits Chinese Journal of Mechanical Engineering Embedded track Irregularity Sensitive wavelength Safety limit |
| title | Subway Embedded Track Geometric Irregularity Safety Limits |
| title_full | Subway Embedded Track Geometric Irregularity Safety Limits |
| title_fullStr | Subway Embedded Track Geometric Irregularity Safety Limits |
| title_full_unstemmed | Subway Embedded Track Geometric Irregularity Safety Limits |
| title_short | Subway Embedded Track Geometric Irregularity Safety Limits |
| title_sort | subway embedded track geometric irregularity safety limits |
| topic | Embedded track Irregularity Sensitive wavelength Safety limit |
| url | https://doi.org/10.1186/s10033-021-00614-y |
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