Abstract A novel approach is presented to describe the dynamic interaction system of a large-diameter floating pipe pile and surrounding soils, taking the three-dimensional wave effects into account. The corresponding analytical solutions for longitudinal complex impedance are obtained and subsequently validated via comparisons with existing solutions. Comparative analyses are also performed to illustrate the difference between the present and previous solutions, concerning the wave propagation effect in the radial direction on the longitudinal dynamic vibration of pile shaft. Furthermore, the effects of Poisson’s ratio and visco-elastic support beneath the pile toe, on the longitudinal dynamic vibration of pile shaft, are investigated. It is indicated that the presented approach and corresponding solutions provide a more wide-ranging application for longitudinal vibration analysis of a large-diameter floating pipe pile, which can also be reduced to analyze the longitudinal vibration problems of large-diameter floating solid pile and fixed- end pipe pile.

中文翻译：

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考虑三维波浪效应的粘弹性土中大直径浮管桩纵向振动新方法

摘要 提出了一种新的方法来描述大直径浮管桩与周围土体的动力相互作用系统，同时考虑三维波浪效应。获得纵向复阻抗的相应解析解，随后通过与现有解的比较进行验证。还进行了比较分析，以说明当前和以前的解决方案之间的差异，涉及径向方向上的波传播对桩轴纵向动力振动的影响。此外，研究了桩趾下方的泊松比和粘弹性支撑对桩身纵向动力振动的影响。