摘要
轮轨噪声在轨道交通噪声中占主要部分。根据国内外对轮轨噪声理论的研究,分析了城市轨道交通轮轨噪声的产生机理及滚动噪声与振动之间的关系,并就增加轨道结构弹性能降低轨道结构振动作了叙述。运用轨道部件的振动加速度功率谱密度函数与轮轨噪声功率谱密度之间的关系,分析了轨道结构弹性对降噪的作用。对治理轮轨噪声提出一些建议。
Urban rail transit is convenient and fast for the passengers, but the vibration and noise is not to be neglected. Wheel/rail noise is the most serious part generated by urban rail transit. On the basis of the theory about wheel/rail noise, the paper analyses the mechanism of wheel/rail noise and the relationship between rolling noise and vibration of railway track components, and describes a way to reduce the vibration energy by enhancing the elasticity of track. Because the relationship between the acceleration SDF( spectrum density function) of track component vibration and the wheel/rail rolling noise SDF could be used to analyze the effect of track elasticity, it is possible to give access to the research of reducing vibration and noise in urban rail transit system.
出处
《城市轨道交通研究》
2003年第5期74-78,共5页
Urban Mass Transit
基金
国家教委<高等学校骨干教师资助计划>资助
编号:GG-0823-10247-1220
