橡胶弹簧浮置板道床对车内噪声影响现场试验研究

Field Test and Research on the Influence of Rubber Spring Floating Slab Track on Interior Noise

橡胶弹簧浮置板道床作为一种新型减振降噪的轨道结构，其对周围建筑物减振降噪效果明显。但是其对车内噪声的影响如何尚无明确结论，需进行下一步研究。本文为了测试其对车内噪声影响，在深圳地铁11号线前海湾至南山区间，分别对普通整体道床地段和橡胶弹簧浮置板道床地段进行噪声测试。结果表明：列车在经过普通整体道床地段时，车内噪声A计权声压级的平均值为81．7～83．8dB；经过橡胶弹簧浮置板轨道时，车内噪声A计权声压级的平均值为81．7～85．1dB。

As a new type of track structure with vibration and noise reduction, the rubber floating slab track has obvious effect on vibration and noise reduction of the surrounding buildings. However, its influence on the noise inside the metro vehicle is not yet clear, so we need to further research .In order to test its influence on the noise inside the metro vehicle, in the section of Qianhaiwanstation to Nanshanstation on Shenzhen Metro Line 11, noise tests werecarried out on the general slab track and the rubber spring floating trackrespectively.The re- sults show that the average A-weighted sound pressure level of the vehicle interior noise is 81.7 - 83.8dB when passing through the general slab track.When the vehicle passing through the rubber floating slab track, the value is 81.7 - 85.1dB.