- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | XU Jingmang, ZHENG Zhaoguang, LAI Jun, YANG Huaizhi, YAN Zheng, QIAN Yao, WANG Ping. Influence of Track Parameters on Wheel/Rail Contact Behavior of High-Speed Turnout[J]. Journal of Southwest Jiaotong University, 2022, 57(5): 990-999. doi: 10.3969/j.issn.0258-2724.20210449
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In order to investigate reasonable rail gauge and rail cant of No.18 turnout with 60N rail under the straight passing speed 350 km/h, based on the track line method and Kalker’s 3D non-Herz rolling contact theory, key sections of 60N rail turnout and measured LMA worn wheels were used to analyzed the wheel-rail contact geometric and mechanical characteristics under different rail gauges and different rail cant parameters. The calculation results were compared with those of CHN60 rail turnout. The results show that under the premise of ensuring safety, properly widening the rail gauge can improve the wheel-rail matching relationship, improve the stability of the train went through the turnout, reduce the wheel-rail contact stress and surface rolling contact fatigue factor when the wheelset-lateral displacement is greater than 8 mm, and extend the service life of the rail. When the rail cant is 1/30, 1/40 and 1/50, the wheel-rail contact parameters have little difference and the matching performance is better. When the rail cant is 1/10 and 1/20, the lateral irregularity and wheel-rail rolling contact fatigue factors are generally large, and the adaptability of 1/10 rail cant to wheel wear is poor. Compared with CHN60 rail turnout, the equivalent conicity of 60N rail turnout is generally smaller, and the stability of the train went through the turnout is better. Wheel wear is easy to lead to wheelspin in the wheel-rail transition section, resulting in switch rail damage.
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