【摘要】 通过建立轨道交通噪声理论计算模型,研究了轮轨相互作用关系及由轮轨表面不平顺而引起的滚动噪声,给出了车轮、钢轨辐射噪声声压级谱关系式,利用有关文献中给定的实验数据,计算了因轮轨表面粗糙度而引起的城市轨道交通噪声,计算结果表明大约在1700Hz以下频段,主要以钢轨振动噪声为主,而在1700Hz以上频段,车轮振动噪声占主导地位。更多还原

【Abstract】 Relationship of wheel/rail interaction and rolling noise due to the roughness of running surfaces of the wheel and the rail are studied by means of establishment of calculation model for the rail transit noise. Sound pressure level spectrums emitting by the wheel and the rail are deduced. Make use of the date in authorized reference, the urban rail transit noise due to the roughness of running surfaces of the wheel and the rail are calculated, and it is shown that below the 1700HZ the rail is the primary source in the total wheel/rail noise,above the 1700HZ the wheel is the primary source.更多还原