摘要
提出一种可用于计算道路路侧交通噪声的计算机仿真模型.将实测的车辆速度、类型和到达时间等微观交通数据作为输入量,利用车辆行驶模型更新车辆各仿真时刻的运行状态,借助车辆噪声模型计算车辆单体对测点的贡献值,进而求解整个车流的噪声值.该模型不但可以全面反映交通噪声起伏变化的时间分布特征,而且还可以预测和分析复杂交通条件下的噪声指标.通过实测数据对比分析,证明模型预测结果与实测数据吻合良好,预测精度为-0.4±1.0 dBA.
In this paper, a computer simulation model for predicting roadside tratttc noise is presenteu. This model will be input as micro--traffic data, for example, measured vehicle speed, category and arrival time, uses vehicle movement model to update each vehicle＇s running states in each time, utilizes vehicle noise model to calculate noise level produced by each vehicle according to its running states, calculates the whole noise of traffic flow. This model not only can comprehensively reflect time distri- bution characteristic of traffic noise, but also can predict and analyze noise evaluation indicator under complex transportation condition. Good agreement has been achieved between measured and predicted noise level value and the precise is -0.4 4±1.0 dBA.
出处
《武汉理工大学学报（交通科学与工程版）》
2010年第2期350-353,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
关键词
道路交通噪声
噪声预测模型
计算机仿真
车辆噪声
highway traffic noise
noise prediction model
computer simulation
vehicle noise
