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Analysis of Rotary Vibration of Rigid Friction Pipe Pile in Unsaturated Soil
Mathematical Problems in Engineering ( IF 1.430 ) Pub Date : 2020-11-23 , DOI: 10.1155/2020/2807574
Fu-yao Zhao 1, 2, 3 , Peng Xiang 2
Affiliation  

Based on the mixture theory and previous work, the governing equation of the rotary vibration of rigid friction pipe pile in unsaturated soil is established. The analytical solution of this equation can be used to analyze the displacements and the complex stiffness of rotary vibration. The results show that the contribution to stiffness is as follows: solid < liquid < gas; and the contribution to rotational impedance is as follows: solid > liquid > gas. In addition, when the fluid permeability coefficient decreases, the stiffness decreases and the rotational impedance increases, but the influence is not obvious (especially the gas permeability coefficient). Four different kinds of degradation problems are also presented. Relevant conclusions can provide reference for engineering application.

中文翻译:

非饱和土中刚性摩擦管桩的旋转振动分析

基于混合理论和先前的工作,建立了非饱和土中刚性摩擦管桩旋转振动的控制方程。该方程的解析解可用于分析旋转振动的位移和复刚度。结果表明,对刚度的贡献如下:固体<液体<气体; 对旋转阻抗的贡献如下:固体>液体>气体。另外,当流体渗透系数降低时,刚度降低并且旋转阻抗增加,但是影响不明显(特别是气体渗透系数)。还提出了四种不同的降解问题。相关结论可为工程应用提供参考。
更新日期:2020-11-23
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