EXPERIMENT THAT VERIFY NOISE DECREASING EFFECT OF DEVELOPED NOISE REDUCTION DEVICE FOR RAILWAY

Abstract

This paper explains the development and full-size model test result of a noise reduction device for Shinkansen. The device is developed by altering the upper shape of existing soundproofing wall, aiming effective noise decrease for Shinkansen running at the higher speed. The relation between soundproofing wall shape and noise reduction was estimated by numerical analyses and full-scale model experiment, and from the experiment results, more effective wall shape was designed.
Full-size model test showed that the developed device did not show any advantage for pantograph originated noise compared to equal-height extensive board, but it was effective for the noise from rail, reducing about 4.5dB.