Torsional Vibration of a Pipe Pile in Arbitrary Layered Saturated Soil Based on the Additional Mass Model

IF 3.6 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

International Journal for Numerical and Analytical Methods in Geomechanics Pub Date : 2025-09-29 DOI:10.1002/nag.70093

Chuanhai Zhan, Ming Sun, Zhiqing Zhang, Hao Liu, Yunpeng Zhang, M. Hesham El Naggar, Meijuan Xu, Wenbing Wu

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Abstract

This study systematically investigates the torsional vibration characteristics of pipe piles embedded in arbitrary layered saturated soils using an additional mass model to account for soil plug effects. A coupled pile‐soil torsional vibration model is developed by integrating Biot's poroelastic theory and the additional mass model, considering viscous damping in both the pile shaft and surrounding soil. Analytical solutions for the torsional dynamic complex impedance at the pile head in the frequency domain are derived using Laplace transforms, separation of variables, and impedance function recursion. The degenerate form of the solution is validated against existing results for solid piles in saturated soils, confirming its accuracy. Parametric analyses are conducted to evaluate the effects of pile geometry, soil properties, and soil plug characteristics on the torsional dynamic stiffness and damping of the pile head, providing insights into the influence mechanisms of key factors in layered saturated soil systems.

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基于附加质量模型的任意层状饱和土中管桩扭振分析

本文采用附加质量模型系统地研究了埋于任意层状饱和土中的管桩的扭转振动特性，以考虑土塞效应。结合Biot的孔弹性理论和附加质量模型，考虑桩身和周围土体的粘性阻尼，建立了桩土耦合扭振模型。利用拉普拉斯变换、分离变量法和阻抗函数递推法，推导了桩顶扭转动力复阻抗的频域解析解。将解的简并形式与已有的饱和土中实心桩的结果进行了验证，证实了其准确性。通过参数分析，评价桩体几何形状、土体性质和土塞特性对桩顶扭转动力刚度和阻尼的影响，深入了解层状饱和土体系中关键因素的影响机制。

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来源期刊

International Journal for Numerical and Analytical Methods in Geomechanics 工程技术-材料科学：综合

CiteScore

6.40

自引率

12.50%

发文量

160

审稿时长

9 months

期刊介绍： The journal welcomes manuscripts that substantially contribute to the understanding of the complex mechanical behaviour of geomaterials (soils, rocks, concrete, ice, snow, and powders), through innovative experimental techniques, and/or through the development of novel numerical or hybrid experimental/numerical modelling concepts in geomechanics. Topics of interest include instabilities and localization, interface and surface phenomena, fracture and failure, multi-physics and other time-dependent phenomena, micromechanics and multi-scale methods, and inverse analysis and stochastic methods. Papers related to energy and environmental issues are particularly welcome. The illustration of the proposed methods and techniques to engineering problems is encouraged. However, manuscripts dealing with applications of existing methods, or proposing incremental improvements to existing methods – in particular marginal extensions of existing analytical solutions or numerical methods – will not be considered for review.