Research on the Value of Vibration Source Intensity for the Underground Line of Intercity Railway.

With the rapid development of intercity railway, there are many vibration-sensitive buildings such as schools, residences, hotels, etc. The track structure needs to be specially designed in accordance with different conditions to meet the requirements of vibration reduction, and the vibration source should be determined reasonably and accurately. In order to solve the inaccurate value problem of vibration source and improve the accuracy of prediction of vibration effect, in-situ test and simulation methods were adopted for the research. Firstly, field vibration data was measured on a rectangular tunnel section of an intercity railway, and the finite element analysis model was verified by the measured vibration source intensity data. Afterward, calibrated model was used to analyze the vibration source intensity data. Models of different types of tunnels and different vehicle speed were built, suggested vibration source data for intercity railway with different tunnels and speeds were proposed. [ABSTRACT FROM AUTHOR]