Research on the Method of Estimating Vibration Attenuation Coefficient of Soil Based on Soil Parameters

A formulaic connection between α₀ and the dynamic parameters of the foundation soil was established according to the vibration attenuation formula in the existing code, and α₀ was uniquely determined by the parameters of the foundation soil itself. The effectiveness and accuracy of the proposed method were verified by the method of theoretical derivation, field test and the comparison with the existing literature. The research results show that: (1) The amplitude of the vibration response is influenced greatly by the geometric attenuation coefficient ζ₀. However, the influence induced by ζ₀ to the transfer ratio between the two points on the transmission path can be neglected; (2) the soil attenuation coefficient calculated by the dynamic characteristics of soil is of higher reliability; (3) the effective vibration depth of the soil varies with the frequencies, and the low frequency vibration almost affects each layer of the soil, and the high frequency vibration signal mainly affects the top layer of the soil.