Abstract
Considering the transverse inertia effect of pile, the vertical dynamic response of a large diameter pipe pile in viscoelastic soil layer is studied. The wave propagations in the outer and inner soil are simulated by three-dimensional elastodynamic theory and those in the pile are simulated by Rayleigh-Love rod theory. The vertical and radial displacements of the outer and inner soil are obtained by utilizing Laplace transform technique and differentiation on the governing equations of soils. Then, based on the continuous conditions between the pile and soils, the displacements of the pile are derived. The frequency domain velocity admittance and time domain velocity response of the pile top are also presented. The solution is compared to a classical rod model solution to verify the validity. The influences of the radii and Poisson ratio of pile on the transverse inertia effect of pile are analyzed. The parametric study shows that Poisson ratio and outer radius of pile have significant influence on the transverse inertia effect of large diameter pipe piles, while the inner radius has little effect.
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Foundation item: Project(U1134207) jointly supported by the National Natural Science Foundation and High Speed Railway Key Program of China; Project(NCET-12-0843) supported by the Program for New Century Excellent Talents in University of China; Projects(51378177, 51420105013) supported by the National Natural Science Foundation of China; Projects(2015B05014, 2014B02814) supported by the Fundamental Research Funds for the Central Universities, China
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Zheng, Cj., Liu, Hl., Ding, Xm. et al. Vertical vibration of a large diameter pipe pile considering transverse inertia effect of pile. J. Cent. South Univ. 23, 891–897 (2016). https://doi.org/10.1007/s11771-016-3136-7
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DOI: https://doi.org/10.1007/s11771-016-3136-7