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Doppler effect in high-speed rail seismic wavefield and its application
We demonstrate by theoretical analysis that periodically distributed viaduct piers of high-speed rail result in the Doppler effect in the seismic wavefield of high-speed rail at specific frequencies and analyze the Doppler effect’s influence on the wavefield’s spectrum feature. We further verify our...
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Published in: | Science China. Earth sciences 2022-03, Vol.65 (3), p.414-425 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We demonstrate by theoretical analysis that periodically distributed viaduct piers of high-speed rail result in the Doppler effect in the seismic wavefield of high-speed rail at specific frequencies and analyze the Doppler effect’s influence on the wavefield’s spectrum feature. We further verify our theoretical prediction by using observational data of the high-speed rail seismic wavefield in Rongcheng, Hebei Province, China. We find that the wavefield component with a noticeable Doppler effect vibrates in the propagation direction and only has a unique apparent wave speed, indicating that P-wave is dominant. Furthermore, we propose a speed measurement method based on the Doppler effect and measure the wave speed of the medium along the rail. Measurement results are highly stable and consistent. |
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ISSN: | 1674-7313 1869-1897 |
DOI: | 10.1007/s11430-021-9843-0 |