Rail grinding can effectively restrain the development of rail corrugation.At present,the formulation standard of grinding limit is mainly based on vehicle running stability and driving safety,and the negative impact of wheel-rail rolling noise is paid insufficient attention to the environment in the current standard of grinding limit.To obtain the limit value of metro rail corrugation grinding under the constraint of wheel-rail rolling noise and service conditions,a comprehensive evaluation model for rail corrugation grinding limit value is established.In the model,the continuous harmonic simulation rail corrugation is taken as the system input.According to the vehicle-track coupling dynamics,the relationship between wheel-rail action force and wheel-rail surface rough-ness is determined.The vibration response and wheel rail rolling noise of vehicle track coupling system are ana-lyzed and obtained,and effects of critical parameters are pointed out Then a prediction method of rail corruga-tion grinding limit for metro based on wheel-rail rolling noise is proposed Results show that the prediction of rail corrugation grinding limit considering the influence of wheel-rail rolling noise not only meets the requirements of vehicle running stability and traffic safety,but also ensures that the noise along the metro is in a reasonable range.Based on the characteristics of wheel-rail rolling noise that are most sensitive to rail corrugation,of metro corrugation grinding limits are comprehensively evaluated and the vehicle running stability when the load changes is improved.
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