Environmental Vibration Characteristics Analysis Of Beijing-Tianjin Inter-City High-Speed Railway

With the development of high-speed railway in our country, the related environmental problems would be the noise, vibration and electromagnetic radiation which generate negative influence to eco-environment. This article studies the related questions about the vibration of high-speed railway.The basic work of resolving the environmental problems by high-speed railway vibration is to study the property and attenuation regulation of it. This article analyzes three kind of reasons in environment vibration of different intensities by measuring the vibration of roadbed, bridge and their transition piece which is lkm from the north to the Wuqing Station located in Beijing and Tianjin city border high-speed railroad. In addition, it concludes the chart about the attenuation tendency of environment vibration with the distance and figures out the formula by measuring the Zhangjiachang viaduct structure of Beijing and Tianjin city border high-speed railroad. What's more, by using the forecasting model, this article predicts the tendency of the environment vibration with the distance and compares with the real result, then discusses which correction factor is proper to our country's high-speed railway.The result shows that among the roadbed, bridge and their transition piece, the vibration from the train going through the transition piece of roadbed and bridge is the smallest, and the largest when it's roadbed. Lastly, the vibration attenuates with the increasing distance. It attenuates faster in 30m from the vibration source, it's about 20db, and 3.8db when it's between 30m to 60m. The result in this article will contribute to the evolution of our country's high-speed railway.