The rheological effect of soil is described by time-dependent modulus, and the expression of deformation modulus in the frequency domain is derived based on viscoelastic theory, so as to analyze the relationship between shear modulus and frequency. Considering the rheology of soil, a continuum dynamic model of pile-soil periodic structure is constructed, and the dispersion equation of shear wave in periodic structure is derived by using multiple scattering method. Through the analysis of numerical examples, the band gap characteristics of shear waves and the influence law of parameters in the row pile foundation of convective soil are studied. The results show that the low frequency shear wave velocity of the rheological soil row pile foundation increases, which makes the band gap position move to the high frequency section, and the greater the relaxation time of the soil, the higher the frequency position of the band gap and the smaller the width. When the filling ratio of the pile foundation is large, the rheology of soil is conducive to broaden the vibration band gap of pile row periodic structure.
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 1, January-February, 2023.
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Yang, H.Z., Wang, L.A. & Zhao, J.C. Analysis of the Effects of Rheology on the Band Structures of Periodic Pile Barriers in Cohesive Soils. Soil Mech Found Eng 60, 7–14 (2023). https://doi.org/10.1007/s11204-023-09857-4
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DOI: https://doi.org/10.1007/s11204-023-09857-4