Research on Typical Problems and Countermeasures of Setting Sound Barrier in Existing Railway
With the sound barrier project of an existing railway as the research object,aiming at the typical problems that are easy to occur during the installation of the sound barrier,the solutions were proposed,namely,the optimal design scheme of reinforced concrete plugging plates,special design scheme of pile foundation structure in hard rock layer section and sound barrier encountering culvert section,safety protection measures such as hard isolation installed during construction of sound barriers adjacent to existing railways.At the same time,the noise reduction effect and standard compliance of the sound barrier after the installation of the sound barrier were analyzed by on-site measurement.The results showed that the noise reduction effect was obvious after the installation of the sound barrier,about 5.6 dB(A)at a distance of 30 m from the centerline of the railway track,and about 4.4 dB(A)at a distance of 60 m,the implementation of the sound barrier could meet the standard limit requirements of the railway boundary and the functional area of the sound environment.The research can be helpful for the sound barrier installation project of existing railway.
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