Abstract
With reference to some relevant domestic and abroad standards on EMU and high-speed railway vehicles, this paper makes a study on the aerodynamic evaluation standard and evaluation indexes of the metro with speed over 90km/h when it passes the tunnel. It also elaborates the principle of the generation of pressure wave undulation in the vehicle and makes suggestions on ride index improving including measures to enhance vehicle air tightness, increase tunnel cross section, control operation speed limit and improve line status.
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