高架道路对临街高层住宅声环境影响规律研究

Effects of Elevated Road on Noise Environment of Neighboring Street Residential Building

文章以Cadna/A为工具,分析了交通噪声与车流量和车速的关系,相对车速,交通噪声的增减程度对车流量的变化更为敏感;以车流量与车速的不同组合,模拟了临街高层住宅声环境质量的达标距离,可为城市道路规划提供一定的技术依据;并对交通噪声的垂直分布规律进行了研究,噪声值随高度增加先增大后减小,垂向面上会出现极大值,相对地面道路,高架道路噪声垂向极大值点会下移,极大值点和道路中心的连线与水平地面形成一定的角度。

Based on cadna/A, relationship of the traffic noise and traffic volume and speed is analyzed, compared with the speed, the increase and decrease rate of the traffic noise is more sensitive to the change of traffic; With different combinations of traffic volume and speed, the noise environmental quality standard distance is simulated, which provides technical basis for the planning and construction of urban roads ; Finally, the traffic noise vertical distribution is studied, noise value increases first and then decreases with height increasing, there will be a connection vertical position of maximum noise, relative to the ground road, the maximum point will moves down, it and the center of the road connect with the horizontal surface forms a certain angle.