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在已建立的轮轨噪声预测模型STTIN的基础上,对高速列车在板式轨道上运行时的轮轨噪声进行了预测分析,并对高速列车在板式轨道上运行时产生的轮轨噪声与在有砟轨道上运行时的轮轨噪声进行了比较。发现钢轨辐射的主要是中、高频噪声,车轮辐射的主要是高频噪声,而轨道板则辐射中、低频噪声;钢轨、车轮和轨道板对总噪声的贡献不同,其中钢轨贡献最大,轨道板最小;无砟轨道的轨道旁噪声级与有砟轨道的相比高出约6.2 dB,铁路边界处近地面噪声级高出约3.5 dB,可见板式轨道噪声明显高于有砟轨道。
Based on the established forecasting model of wheel-rail noise (STTIN), the wheel-rail noise during high-speed train running on the slab track is predicted and analyzed, and the wheel-rail noise generated when the high- Wheel and rail noise during orbital run was compared. It is found that the main radiation of the rail is medium-to-high-frequency noise and the radiation of the wheel is mainly high-frequency noise while the orbital plate radiates medium and low-frequency noise. The contribution of rail, wheel and rail plate to the total noise is different, The minimum noise level of the ballastless track is about 6.2 dB higher than that of the ballasted track, and the noise near the ground is about 3.5 dB above the railway boundary. The noise of the slab track is obviously higher than that of the ballasted track.