Engineering Verification of Key Technologies for Rail Transit Stray Current Protection
[Objective] In order to solve the problem of stray current corrosion on metro lines, it is necessary to conduct engineering verification of the key technologies for stray current protection in urban rail transit. [Method] The high-insulation concrete is introduced. A new type of fully insulated rail...
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| Format: | Article |
| Language: | zho |
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Urban Mass Transit Magazine Press
2025-05-01
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| Series: | Chengshi guidao jiaotong yanjiu |
| Subjects: | |
| Online Access: | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.05.040.html |
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| _version_ | 1850040278257238016 |
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| author | JIN Shoujie MA Jiansheng OUYANG Kai LIU Yubei ZHAO Yunyun LIN Xiaohong |
| author_facet | JIN Shoujie MA Jiansheng OUYANG Kai LIU Yubei ZHAO Yunyun LIN Xiaohong |
| author_sort | JIN Shoujie |
| collection | DOAJ |
| description | [Objective] In order to solve the problem of stray current corrosion on metro lines, it is necessary to conduct engineering verification of the key technologies for stray current protection in urban rail transit. [Method] The high-insulation concrete is introduced. A new type of fully insulated rail fastener is designed, and static and dynamic test methods are used to verify the insulation performance of the track steel rail against the ground. The static test includes measuring the rail-to-ground resistance parameters, and the dynamic test simulates the metro operating conditions to detect the changes of rail-to-ground transition resistance during the actual metro operation. [Result & Conclusion] By setting a fully enclosed eaves structure rail pad and extending insulated gauge blocks, and other methods, the new type of fully insulated rail fastener can increase the creepage distance and improve the surface resistance of the rail fastener. Both the high-insulation concrete and the fully insulated rail fastener can effectively improve the rail-to-ground transition resistance. Compared with the traditional track installation schemes, the overall insulated fastener plus silicon-based nano-insulation wrapping scheme exhibits the most significant effect on improving the rail-to-ground transition resistance. The new type of insulating materials and the fastener system can maintain good insulation performance under different working conditions, and effectively reduce the leakage of track stray current. |
| format | Article |
| id | doaj-art-d4256a6f6fb242e6b35c63b452345c21 |
| institution | DOAJ |
| issn | 1007-869X |
| language | zho |
| publishDate | 2025-05-01 |
| publisher | Urban Mass Transit Magazine Press |
| record_format | Article |
| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-d4256a6f6fb242e6b35c63b452345c212025-08-20T02:56:08ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2025-05-0128523824310.16037/j.1007-869x.2025.05.040Engineering Verification of Key Technologies for Rail Transit Stray Current ProtectionJIN Shoujie0MA Jiansheng1OUYANG Kai2LIU Yubei3ZHAO Yunyun4LIN Xiaohong5Shenzhen Municipal Design & Research Institute Co., Ltd., 518029, Shenzhen, ChinaGuangzhou Metro Group Co., Ltd., 510006, Guangzhou, ChinaGuangzhou Metro Group Co., Ltd., 510006, Guangzhou, ChinaGuangzhou Metro Design & Research Institute Co., Ltd., 510030, Guangzhou, ChinaGuangzhou Metro Design & Research Institute Co., Ltd., 510030, Guangzhou, ChinaGuangzhou Metro Design & Research Institute Co., Ltd., 510030, Guangzhou, China[Objective] In order to solve the problem of stray current corrosion on metro lines, it is necessary to conduct engineering verification of the key technologies for stray current protection in urban rail transit. [Method] The high-insulation concrete is introduced. A new type of fully insulated rail fastener is designed, and static and dynamic test methods are used to verify the insulation performance of the track steel rail against the ground. The static test includes measuring the rail-to-ground resistance parameters, and the dynamic test simulates the metro operating conditions to detect the changes of rail-to-ground transition resistance during the actual metro operation. [Result & Conclusion] By setting a fully enclosed eaves structure rail pad and extending insulated gauge blocks, and other methods, the new type of fully insulated rail fastener can increase the creepage distance and improve the surface resistance of the rail fastener. Both the high-insulation concrete and the fully insulated rail fastener can effectively improve the rail-to-ground transition resistance. Compared with the traditional track installation schemes, the overall insulated fastener plus silicon-based nano-insulation wrapping scheme exhibits the most significant effect on improving the rail-to-ground transition resistance. The new type of insulating materials and the fastener system can maintain good insulation performance under different working conditions, and effectively reduce the leakage of track stray current.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.05.040.htmlurban rail transitstray currentkey protection technologiesinsulated rail fastener |
| spellingShingle | JIN Shoujie MA Jiansheng OUYANG Kai LIU Yubei ZHAO Yunyun LIN Xiaohong Engineering Verification of Key Technologies for Rail Transit Stray Current Protection Chengshi guidao jiaotong yanjiu urban rail transit stray current key protection technologies insulated rail fastener |
| title | Engineering Verification of Key Technologies for Rail Transit Stray Current Protection |
| title_full | Engineering Verification of Key Technologies for Rail Transit Stray Current Protection |
| title_fullStr | Engineering Verification of Key Technologies for Rail Transit Stray Current Protection |
| title_full_unstemmed | Engineering Verification of Key Technologies for Rail Transit Stray Current Protection |
| title_short | Engineering Verification of Key Technologies for Rail Transit Stray Current Protection |
| title_sort | engineering verification of key technologies for rail transit stray current protection |
| topic | urban rail transit stray current key protection technologies insulated rail fastener |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.05.040.html |
| work_keys_str_mv | AT jinshoujie engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection AT majiansheng engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection AT ouyangkai engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection AT liuyubei engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection AT zhaoyunyun engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection AT linxiaohong engineeringverificationofkeytechnologiesforrailtransitstraycurrentprotection |