基于微观交通仿真的交叉口交通噪声模拟方法

文章提出了一种基于微观交通流仿真的交通噪声模拟方法。应用Paramics微观交通仿真软件模拟了车流量从100veh/h逐级增大到1000veh/h过程中信号灯控制的十字交叉口交通状况,并将模拟所得的交通流数据作为交通噪声模拟计算的输入参数对交通噪声进行了计算。对比分析了不同车流量下十字交叉口附近交通噪声的特性及变化情况。研究发现:在非饱和车流情况下,交通噪声水平随车流量的增大而增大,并与车流量的对数呈线性关系,交通噪声的波动范围随车流量的增大而缩小,车流量达到饱和后,交通噪声不增反降。噪声污染级随车流量的增大呈现出先增大后减小的特征,峰值出现在车流量为400veh/h～500veh/h之间。

Intersection Traffic Noise Simulation Method Based on Microscopic Traffic Simulation

A traffic noise simulation method which based on microscopic traffic simulation is proposed. Paramics, one of the microscopic traffic simulation software, is applied to simulate the traffic flow on the signalized intersection where the traffic flow increase from 100veh/h to 1.000veh/h step by step, and the traffic noise level is calculated based on the simulative traffic flow datum. It is found that when the traffic flow is unsaturated, the traffic noise level increased with the traffic flow, and linear relationship with the logarithm of traffic flow, but therange of the traffic noise level is decreased with the increase in the traffic flow. The traffic noise level will not increase but decrease when the traffic flow is saturated. The noise pollution level shows the characteristics of increased first and then decreased with the increase in the traffic flow, and the peak value appears when the traffic flow is between 400veh/h to 500veh/h.