轨道交通轮轨滚动噪声的预测

随着我国大规模的铁路提速改造工程的实施，以及大力发展高速客运专线，铁路列车的运行噪声给沿线的居住环境带来了严重影响。基于轮轨竖向及横向振动相互作用关系，根据结构声辐射理论，考虑大地反射的影响，推导了铁路轮轨滚动噪声声压级谱的理论表达式。为验证本模型的正确性，在轮轨高频振动响应和轮轨噪声计算两方面和有关文献实测结果进行了对比验证，此外还对我国既有线轮轨噪声进行了理论预测和现场实测，数值计算结果与实验结果具有较好的一致性。

Prediction of Wheel/Rail Rolling- noise During Rail Transit

With the actualization of the national higher speed railway program, and the development of passenger lines, the railway noise has impacted heavily on the residents along the lines. In the thesis, based on the basic relations of wheel/rail interaction, considering the effects of the ground reflection, the prediction expressions of the sound pressure level spectrum of the wheel/rail rolling-noise are derived by use of the structural sound radiation theory. In order to demonstrate the accuracy of the model, the calculation results of wheel/rail high-frequency response and wheel/rail noise are compared with the test results in authorized reference. The wheel/rail rolling-noise from existing railways in our country are predicted and measured. The numerical and measurement results are in good coincidance.