航空測量を用いて製作した縮尺音響模型による沿線騒音評価

抄録

Noise reduction along railway lines is important issues. Prediction of and countermeasures against noise around tunnel entrances have been studied. However, it is more difficult to estimate the effect of countermeasures against noise on the uneven ground surface around tunnel entrances than on flat terrain. In this study, based on the results of aerial laser surveying, an acoustic scale model of the uneven ground surface around the tunnel entrance was built, and the effect of the countermeasures against noise by raising the height of noise barrier and by the installation of sound-absorbing panel on the tunnel entrance hood was verified.