Noise pollution along Wuhan-Guangzhou express railway and effect to residential environment

By measurement and analysis of the noise along Wuhan Guangzhou express railway, conclusions as follows can be educed: all of the noise on the boundary alongside express railway line measure up to GB12525; during the measurement, to those buildings in 2 noise environment functional area, day-time noise measures up to GB3096-93 hardly on the boundary of functional area, night-time noise goes beyond the limit, night-time burst noise goes beyond the limit badly (more than 18.4 dB(A)); the more train density, the more noise pollution to the buildings along express railway, to those buildings in 2 noise environment functional area, whether the day time noise can measure up to GB3096-93 is a question, and along with the delay of train finishing business, night-time noise goes beyond the limit longer time and higher value; noise barriers preferably reduce burst noise on the boundary alongside express railway line, and can reduce equivalent continuous A-weighted sound pressure level(Leq) too, so it is fit for the buildings near express railway line; noise barriers about 2-3 meters high only have a little effect to the noise of functional area, and have little effect to 2-3 floors´ noise of functional area.