介绍了两种消声钢轨的具体构造,及五种构造方案的消声对比试验结果。测试数据说明在道轨上加设消声套后取得了良好的消声效果。 The concrete structures of two kinds of muffler rails are introduced, and the comparison results of muffling of five construction schemes are also presented. The test data shows that after adding the muffler cover on the track, a good noise reduction effect has been achieved.