Vibration Attenuation Characters in Deep Holes under Road Traffic Load

Abstract:

Through the field vibration measurement of 50m and 80m deep holes under road traffic load, the attenuation law of displacement in holes with depth under traffic and traffic-free conditions was discussed in the time and frequency domains. Some conclusions were drawn as follows: RMS attenuation factor was close to 0.2 and the displacement is obviously reduced at a depth of about 40m; the peak frequency decreased as the depth gradually increased. Compared with the attenuation law in elastic half-space Rayleigh wave, it was found that the horizontal displacement reduced more slowly than the elastic half-space Rayleigh wave and the attenuation factor was gradually close to the attenuation curve of the elastic half-space Rayleigh wave with the increase of the depth; the attenuation factor of the vertical displacement gradually reduced as the depth increased and reduced much faster than elastic half-space Rayleigh wave.

• Periodical: Applied Mechanics and Materials (Volumes 353-356)
• Pages: 761-767
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.353-356.761
• Online since: August 2013
• Authors: Zheng Jun Mei
• Keywords: Attenuation Law, Deep Hole Vibration, Rayleigh Wave

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