Prediction and Analysis of Noise Impact and Noise Reduction Scheme Effect for Complex Road Types

In order to improve urban traffic efficiency, complex road types are increasingly common in cities. At the same time, it also increases the impact of noise. As an important noise reduction measure, noise barrier measures are widely used in traffic noise control. The prediction of noise reduction scheme in advance is conducive to the scientific and reasonable setting of noise barrier measures. In this paper, based on the impact of traffic noise from elevated roads on a residential building, the noise prediction software is used to simulate the scene, and the model is calibrated with the field measured data, and the noise contribution of elevated road and ground road to sensitive targets is quantitatively analyzed. On this basis, the noise reduction effects of different types of noise barrier measures, such as vertical, bending, semi-closed and fully-closed, on sensitive targets are analyzed. The effect of different additional length on noise reduction is further analyzed. The simulation analysis also focuses on the key buildings and floors that are seriously affected by road noise, providing sufficient technical support for the implementation of the subsequent overall noise reduction project.