公路交通噪声预测模型FHWA、RLS90与规范模型的对比

Comparison of FHWA,RLS90 and MOT Model for Highway Traffic Noise Prediction

对山东省济南-菏泽高速公路的部分路段进行交通噪声24 h连续监测,并根据实测的交通量和车辆行驶速度,运用FHWA模型、RLS90模型和规范模型进行噪声预测,将实测值与预测值进行对比分析可知,规范模型的预测值准确性更强.对高速公路单车噪声源强进行进一步实测分析,结果表明规范模型的源强计算值和源强实测值比较接近.考虑优化车型分类方式,将未满载的大客车归为中型车进行噪声预测,可使规范模型噪声预测值更为准确.

Based on the actual monitoring traffic volume and running speed from 24 hours-traffic noise monitoring of Jinan to Heze expressway in Shandong province, traffic noise prediction results by using FHWA, RLS90 and MOT model were compared with the monitoring results. It was found that the prediction results of MOT model are the most accurate. Then further measurement and analysis of traffic noise intensity of different vehicles was carried out, the results show that traffic noise intensity calculated values by using MOT model are the most close to the actual monitoring values. If we take optimization of vehicle classification into account that treat non-fully loaded bus as midsize car, prediction results of MOT model can be more accurate.