城市轨道交通列车噪声预测模型研究

以已建立的城市轨道交通噪声预测模型为基础,提出改进的噪声预测模型。明确了各预测参数,采用对数回归关系确定了各影响因子与等效声级的关系。运用预测模型对长春轻轨噪声进行了预测。通过与实测结果进行比较,预测值与实际结果的误差<1dB(A),表明所提出的预测模型可精确反映长春轻轨的噪声级。

Research on Noise Prediction Model for Urban Rail Transit

The noise produced from urban transit is always one of the most concerned puzzlements.This paper, based on the current noise prediction model for urban transit and the research achievements of foreign countries,sets up an improved calculation model by using theoretical analyses and practical data from direct measurement.In order to evaluate the practical effect of noise,the prediction characteristics are tested in the prediction of noise for Chang-Chun light rail transit.With contrast to the direct measurement,the prediction error is <1 dB(A),which indicates the improved prediction model is a considerably better agreement between practical and calculated values of noise levels.