New Analytical Solution to Predict the Vertical Impedance of a Large-Diameter Pipe Pile in Soil Considering Wave Propagation in Visco-Elastic Continuum

IF 2.1 4区工程技术 Q2 GEOCHEMISTRY & GEOPHYSICS Journal of Earthquake and Tsunami Pub Date : 2021-06-07 DOI:10.1142/S1793431121400029

Cui Chunyi, Liang Zhimeng, Xu Chengshun, Xin Yu, Wang Benlong, Meng Kun

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引用次数: 3

Abstract

According to the theories of wave propagation in visco-elastic continuum and Rayleigh-Love rod, a simplified model in axisymmetric conditions for the longitudinal vibration of large-diameter pipe pile (LDPP) in radially heterogeneous surrounding soil with viscous damping is presented. The relevant analytical solution for dynamic impedance at pile head is derived by using complex stiffness transfer method, which is also validated via independent comparisons with previous solutions. Besides, parametric analyses are carried out to reveal both the radial heterogeneity of surrounding soil and the lateral inertia effect of pile shaft on the dynamic impedance of LDPP. The obtained analytical solutions are suitable for the longitudinal vibration issues of floating LDPP in visco-elastic surrounding soil with radial heterogeneity, which can be conveniently degenerated to describe the longitudinal vibration of a floating solid pile in soil with radial heterogeneity as well as a floating LDPP or solid pile in radially homogenous soil.

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考虑粘弹性连续介质中波传播的土中大直径管桩垂直阻抗新解析解

根据粘弹性连续介质和瑞利-洛夫杆的波传播理论，建立了大直径管桩在径向非均质土中纵向振动轴对称条件下的简化模型。采用复刚度传递法推导出相应的桩顶动力阻抗解析解，并与前人解进行独立比较验证。此外，通过参数分析揭示了周围土体的径向非均质性和桩身的侧向惯性效应对LDPP动力阻抗的影响。所得解析解适用于具有径向非均质性的粘弹性周围土中浮动LDPP的纵向振动问题，可以方便地简并描述径向非均质土中浮动实心桩的纵向振动问题，以及径向均质土中浮动LDPP或实心桩的纵向振动问题。

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来源期刊

Journal of Earthquake and Tsunami 地学-地球化学与地球物理

CiteScore

2.60

自引率

13.30%

发文量

审稿时长

>12 weeks

期刊介绍： Journal of Earthquake and Tsunami provides a common forum for scientists and engineers working in the areas of earthquakes and tsunamis to communicate and interact with one another and thereby enhance the opportunities for such cross-fertilization of ideas. The Journal publishes original papers pertaining to state-of-the-art research and development in Geological and Seismological Setting; Ground Motion, Site and Building Response; Tsunami Generation, Propagation, Damage and Mitigation, as well as Education and Risk Management following an earthquake or a tsunami. We welcome papers in the following categories: Geological and Seismological Aspects Tectonics: (Geology - earth processes) Fault processes and earthquake generation: seismology (earthquake processes) Earthquake wave propagation: geophysics Remote sensing Earthquake Engineering Geotechnical hazards and response Effects on buildings and structures Risk analysis and management Retrofitting and remediation Education and awareness Material Behaviour Soil Reinforced concrete Steel Tsunamis Tsunamigenic sources Tsunami propagation: Physical oceanography Run-up and damage: wave hydraulics.