Monitoring and Evaluation of High-Speed Railway Turnout Grinding Effect Based on Field Test and Simulation

Turnouts are the weak spot in high-speed rail systems, and it is simple for phenomenon of wheel–rail force carbody lateral acceleration over-limit to arise when train passes through, which affects service life running stability train. In this paper, turnout with selected analysis, profiles wheel monitored. Then, vehicle–turnout coupled multi-body dynamics model simulated. Additionally, portable vibration analyzer, comprehensive inspection train, contact dynamic stress tester monitors data evaluates impact grinding on railway. The results study demonstrated that good agreement standard following grinding, point equivalent conicity both improved. When ground at high speed without polygonal wear, were clearly Using tester, analyzer monitoring changes acceleration, definitely better after grinding. Similar pattern simulation, train’s steadiness increased by