Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway
As the axle weight of the locomotive continues to increase, the wheel-rail wear is intensified, and rail corrugation on the small radius curve becomes more and more common. Based on the theory of vehicle system dynamics, by establishing C<sub>0</sub>-C<sub>0</sub> 30 t axle h...
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Editorial Department of Electric Drive for Locomotives
2020-07-01
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| Series: | 机车电传动 |
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| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2020.04.110 |
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| author | Zhiwei LIU Jianxin LIU Jiufeng CAI Azhong ZHANG |
| author_facet | Zhiwei LIU Jianxin LIU Jiufeng CAI Azhong ZHANG |
| author_sort | Zhiwei LIU |
| collection | DOAJ |
| description | As the axle weight of the locomotive continues to increase, the wheel-rail wear is intensified, and rail corrugation on the small radius curve becomes more and more common. Based on the theory of vehicle system dynamics, by establishing C<sub>0</sub>-C<sub>0</sub> 30 t axle heavy haul locomotive model, and using MATLAB software to simulate rail corrugation on the small radius curve as the external disturbance input, the influence of the small radius curve with rail corrugation on locomotive curve passing safety of heavy haul railway was studied. The results showed that the vertical force of the wheel-rail increased with the increasing of the wave depth, and decreased with the increasing of the wavelength. When the locomotive passed the small radius curve rail at a speed of not less than 70 km/h, it was highly probable that the wheel and rail would be instantaneously detached. In order to ensure the safety of the locomotive curve passing, the dynamic wheel load shedding rate, derailment coefficient and overturning coefficient were used as evaluation indexes. For the rail corrugation of different wave depths and wavelengths, the driving speed was proposed, that is, for rail corrugation with wave length of 300 mm and wave depth of 0.8 mm, the safe passing speed of locomotive couldn’t exceed 70 km/h; when rail corrugation is further developed and wave depth reaches 1.0 mm, the safe passing speed of locomotive couldn’t exceed 60 km/h. |
| format | Article |
| id | doaj-art-7ed3c2978da6412eaf9f9b60fb664bc3 |
| institution | Kabale University |
| issn | 1000-128X |
| language | zho |
| publishDate | 2020-07-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-7ed3c2978da6412eaf9f9b60fb664bc32025-08-20T03:48:58ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2020-07-0112212720922009Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul RailwayZhiwei LIUJianxin LIUJiufeng CAIAzhong ZHANGAs the axle weight of the locomotive continues to increase, the wheel-rail wear is intensified, and rail corrugation on the small radius curve becomes more and more common. Based on the theory of vehicle system dynamics, by establishing C<sub>0</sub>-C<sub>0</sub> 30 t axle heavy haul locomotive model, and using MATLAB software to simulate rail corrugation on the small radius curve as the external disturbance input, the influence of the small radius curve with rail corrugation on locomotive curve passing safety of heavy haul railway was studied. The results showed that the vertical force of the wheel-rail increased with the increasing of the wave depth, and decreased with the increasing of the wavelength. When the locomotive passed the small radius curve rail at a speed of not less than 70 km/h, it was highly probable that the wheel and rail would be instantaneously detached. In order to ensure the safety of the locomotive curve passing, the dynamic wheel load shedding rate, derailment coefficient and overturning coefficient were used as evaluation indexes. For the rail corrugation of different wave depths and wavelengths, the driving speed was proposed, that is, for rail corrugation with wave length of 300 mm and wave depth of 0.8 mm, the safe passing speed of locomotive couldn’t exceed 70 km/h; when rail corrugation is further developed and wave depth reaches 1.0 mm, the safe passing speed of locomotive couldn’t exceed 60 km/h.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2020.04.110heavy haul railwaysmall radius curverail corrugationheavy haul trainwheel-rail vertical forcecurve passing safetytrack irregularitysimulation |
| spellingShingle | Zhiwei LIU Jianxin LIU Jiufeng CAI Azhong ZHANG Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway 机车电传动 heavy haul railway small radius curve rail corrugation heavy haul train wheel-rail vertical force curve passing safety track irregularity simulation |
| title | Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway |
| title_full | Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway |
| title_fullStr | Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway |
| title_full_unstemmed | Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway |
| title_short | Study on the Influence of the Small Radius Curve Rail Corruqation on Locomotive Curve Passing Safety of Heavy Haul Railway |
| title_sort | study on the influence of the small radius curve rail corruqation on locomotive curve passing safety of heavy haul railway |
| topic | heavy haul railway small radius curve rail corrugation heavy haul train wheel-rail vertical force curve passing safety track irregularity simulation |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128x.2020.04.110 |
| work_keys_str_mv | AT zhiweiliu studyontheinfluenceofthesmallradiuscurverailcorruqationonlocomotivecurvepassingsafetyofheavyhaulrailway AT jianxinliu studyontheinfluenceofthesmallradiuscurverailcorruqationonlocomotivecurvepassingsafetyofheavyhaulrailway AT jiufengcai studyontheinfluenceofthesmallradiuscurverailcorruqationonlocomotivecurvepassingsafetyofheavyhaulrailway AT azhongzhang studyontheinfluenceofthesmallradiuscurverailcorruqationonlocomotivecurvepassingsafetyofheavyhaulrailway |