城市轨道交通引起的室内噪声规范对比分析研究OA

With the rapid development of urban rail transit,transportation routes inevitably cross commercial and residential areas,and the indoor noise in buildings along the line caused by train operation is becoming increasingly serious.When measuring and evaluating indoor noise in buildings,using different standards can lead to different conclusions,so it is necessary to clarify the similarities and differences among commonly used standards.By conducting noise tests on three buildings along the elevated rail transit line,the differences in the limit values specified in several commonly used indoor noise standards in China were comparatively analyzed.The results showed that:(1)during the same train operation period,the 20-min equivalent sound level under intensive train operation was higher than the 1 h equivalent sound level during the same period,and the 1 h equivalent sound level showed a positive correlation with train operation density.(2)The limit values of the General Code for Building Environment(GB 55016-2021)were stricter than those of the Code for Sound Insulation Design of Civil Buildings(GB 50118-2010).(3)When evaluating the same test result using different standards,different conclusions were obtained.Therefore,when conducting acoustic environment assessment,it is necessary to choose appropriate standards based on multiple factors such as vibration sources and testing environment.