【摘要】 采取1/3倍距法布设测点,使用多通道噪声分析系统,对城市轨道交通噪声进行地面和轨面上的水平测试及垂向测试,取得其距离衰减规律、声级垂向分布等特性,新的测试点位布设方案取得了比传统测试方案更详细的测试结果。研究结果对于城市轨道交通噪声特性的研究及其控制方法的确定具有重要的学术意义和工程价值,同时对城市轨道交通噪声的测试方案进行了有益的探索。更多还原

【Abstract】 A 1/3-times-distance noise receive points method and a multi-channel noise acquisition & analysis system were used to get the property of the urban rail traffic noise,The noise propagation regular and the noise distributing on hight were getted.It is proved much better to measure the noise by new method of points setting than using the traditional method.更多还原