Abstract
To study the vibration isolation effect of miniature concrete vibration-isolated piles for rail transit on shallow surfaces, the evaluation parameters were set, and a model was tested to analyze different geometric parameters of vibration-isolated piles. The results show the following. When the ratio of the pile length to the wavelength is between 1.024 and 1.125, an increase in the pile length has less effect on the vibration isolation effect. When the ratio of the pile spacing to the wavelength is between 0.013 and 0.080, the vibration effect can be maintained at a good level. When the ratio of the spacing to the wavelength is greater than 0.080, the vibration isolation effect gradually decreases with an increase in the pile spacing. When the ratio of the pile section width to the wavelength is greater than 0.058, an increase in the pile section width gradually weakens the effect of the vibration isolation. Finally, when the ratio of the vibration-isolated pile section width to the pile length and the ratio between the pile spacing and the pile length are both small, vibration-isolated piles can obtain a good vibration isolation effect. Using elongated and densely arranged single-row piles can provide a good vibration isolation effect. If the location of a vibration-isolated pile is not close to the source of vibration, the pile can obtain a better vibration isolation effect. When the ratio of the vibration source distance to the pile length is in the range of 0.9–1.2, setting vibration-isolated piles at a certain distance from the vibration source can achieve a better vibration isolation effect.
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Acknowledgements
This paper was supported by the Youth Talent Projects of Colleges in Hebei Province of China (No. BJ2016018) and the Hebei University of Architecture Graduate Innovation Fund (No. XA201913).
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Liu, Jl., Wang, Ay., Yu, Cq., Zhao, Q., Zhang, J. (2020). Research on the Influences of the Geometric Parameters of the Vibration Isolation Effect of Miniature Concrete Vibration-Isolated Piles for Rail Transit. In: Tutumluer, E., Chen, X., Xiao, Y. (eds) Advances in Environmental Vibration and Transportation Geodynamics. Lecture Notes in Civil Engineering, vol 66. Springer, Singapore. https://doi.org/10.1007/978-981-15-2349-6_2
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DOI: https://doi.org/10.1007/978-981-15-2349-6_2
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