A Study on the Device Installed on the Barrier for The Environmental Noise Reduction in 400 km/h High Speed Railway

Abstract

Recently, the speed of high-speed railway has been rapidly increase with the development of high-speed train design and operating technology. This causes a lot of complaints related the environmental noise in residential areas near the high-speed railway. In order to operate the high-speed railway in accordance with the design speed, noise reduction technology should be developed to meet the noise characteristics of high-speed railway. And it is important to develop the prediction technology by grasping the noise radiation characteristics. In order to meet these requirements, in recent years, infra-research for 400 km/h high speed railway has been conducted. Reliable noise prediction and noise reduction techniques have been developed through this study. This paper is concerned with wind pressure safety and noise performance evaluation of the newly developed 400 km/h noise reduction device. The wind pressure safety and The noise performance of the developed device was confirmed by this paper.

Multi-Source Coupling Based Analysis of the Acoustic Radiation Characteristics of the Wheel–Rail Region of High-Speed Railways

“…As the train speed increases, the wheel-rail dynamic effect of the track structure becomes more significant, which leads to a reduced vehicle running quality, deteriorated line conditions, increased vibration and noise of the track structure, and critically aggravated noise pollution. With the improvement in people's living standards, the awareness regarding the environmental vibration and noise [1][2][3] induced by high-speed railways is growing. Therefore, the noise problem of high-speed railways is an urgent problem that must be solved during the high-speed railway development phase in China.…”