Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel
Abstract To investigate the dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge (CB) considering resilient wheels, the mechanical connection characteristics of rim and web are discussed firstly. Based on the train–track–bridge interaction theory, t...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-86572-0 |
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| author | Yuexing Wu Qianhua Pu Zhaowei Chen Xinmin Hong Xinzhong Wang |
| author_facet | Yuexing Wu Qianhua Pu Zhaowei Chen Xinmin Hong Xinzhong Wang |
| author_sort | Yuexing Wu |
| collection | DOAJ |
| description | Abstract To investigate the dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge (CB) considering resilient wheels, the mechanical connection characteristics of rim and web are discussed firstly. Based on the train–track–bridge interaction theory, the coupled dynamic model of metro train-CB considering resilient wheels is established. Then, the vehicle–bridge coupled dynamic characteristics under the excitation of long-short wave track irregularity are researched. Finally, from the perspective of dynamics, the safe operating speed threshold of metro trains passing through curved bridge considering resilient wheels (RW) is discussed. Results show that the vertical wheel–rail force of RW is reduced, but the lateral wheel–rail force is amplified compared with the solid wheels (SW). The vertical vibration acceleration of the wheel is reduced, but the lateral vibration acceleration is increased. It is recommended that the speed of metro trains running on curved bridge is not more than 60 km/h. The vehicle–bridge coupling dynamic response is aggravated with the speed and load of metro train. The vibration of the inner side of the curved bridge is greater than that of the outer side, and the vibration reduction effect of the RW on the inner side is more significant than that on the outer side. The RW has a vibration absorption effect on the wheel–rail vertical and the vibration of the curved bridge force within 40–140 Hz. |
| format | Article |
| id | doaj-art-233570078ffa43469914b53aa5334293 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-233570078ffa43469914b53aa53342932025-02-02T12:21:47ZengNature PortfolioScientific Reports2045-23222025-01-0115112010.1038/s41598-025-86572-0Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheelYuexing Wu0Qianhua Pu1Zhaowei Chen2Xinmin Hong3Xinzhong Wang4School of Civil Engineering, Hunan City UniversitySchool of Civil Engineering, Southwest Jiaotong UniversityState Key Laboratory of Mountain Bridge and Tunnel Engineering, Chongqing Jiaotong UniversitySchool of Civil Engineering, Hunan City UniversitySchool of Civil Engineering, Hunan City UniversityAbstract To investigate the dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge (CB) considering resilient wheels, the mechanical connection characteristics of rim and web are discussed firstly. Based on the train–track–bridge interaction theory, the coupled dynamic model of metro train-CB considering resilient wheels is established. Then, the vehicle–bridge coupled dynamic characteristics under the excitation of long-short wave track irregularity are researched. Finally, from the perspective of dynamics, the safe operating speed threshold of metro trains passing through curved bridge considering resilient wheels (RW) is discussed. Results show that the vertical wheel–rail force of RW is reduced, but the lateral wheel–rail force is amplified compared with the solid wheels (SW). The vertical vibration acceleration of the wheel is reduced, but the lateral vibration acceleration is increased. It is recommended that the speed of metro trains running on curved bridge is not more than 60 km/h. The vehicle–bridge coupling dynamic response is aggravated with the speed and load of metro train. The vibration of the inner side of the curved bridge is greater than that of the outer side, and the vibration reduction effect of the RW on the inner side is more significant than that on the outer side. The RW has a vibration absorption effect on the wheel–rail vertical and the vibration of the curved bridge force within 40–140 Hz.https://doi.org/10.1038/s41598-025-86572-0Metro trainResilient wheelCurved bridgeSafe operation speed thresholdVehicle–track–bridge coupled vibration |
| spellingShingle | Yuexing Wu Qianhua Pu Zhaowei Chen Xinmin Hong Xinzhong Wang Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel Scientific Reports Metro train Resilient wheel Curved bridge Safe operation speed threshold Vehicle–track–bridge coupled vibration |
| title | Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| title_full | Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| title_fullStr | Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| title_full_unstemmed | Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| title_short | Dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| title_sort | dynamic characteristics and safe operation speed threshold of metro train passing through curved bridge considering resilient wheel |
| topic | Metro train Resilient wheel Curved bridge Safe operation speed threshold Vehicle–track–bridge coupled vibration |
| url | https://doi.org/10.1038/s41598-025-86572-0 |
| work_keys_str_mv | AT yuexingwu dynamiccharacteristicsandsafeoperationspeedthresholdofmetrotrainpassingthroughcurvedbridgeconsideringresilientwheel AT qianhuapu dynamiccharacteristicsandsafeoperationspeedthresholdofmetrotrainpassingthroughcurvedbridgeconsideringresilientwheel AT zhaoweichen dynamiccharacteristicsandsafeoperationspeedthresholdofmetrotrainpassingthroughcurvedbridgeconsideringresilientwheel AT xinminhong dynamiccharacteristicsandsafeoperationspeedthresholdofmetrotrainpassingthroughcurvedbridgeconsideringresilientwheel AT xinzhongwang dynamiccharacteristicsandsafeoperationspeedthresholdofmetrotrainpassingthroughcurvedbridgeconsideringresilientwheel |