Vertical dynamic response of a static drill rooted nodular pile

被引：0
|
作者：
Wang K. [1 ,2 ]
Xiao S. [1 ,2 ]
Gao L. [1 ,2 ]
Wu J. [1 ,2 ]
机构：
[1] Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou
[2] Key Laboratory of soft soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University, Hangzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2019年 / 38卷 / 15期
关键词：
Cement soil; Dynamic response; Fictitious soil pile; Shear complex stiffness; Static drill rooted nodular pile;
D O I：
10.13465/j.cnki.jvs.2019.15.007
中图分类号：
学科分类号：
摘要：
Based on the planar strain model for radial heterogeneity of soil around a pile, the vertical dynamic response of a static drill rooted nodular pile was investigated. At first, by utilizing the shear complex stiffness transfer method, the shear complex stiffness at the pile side was gained. Then, considering the special structure of the pile, the pile-soil system was divided into finite micro-elements in longitudinal direction, and the pile bottom soil reaction exerted on the pile end was simulated with the fictitious soil pile model. Afterward, using Laplace transformation and the impedance function recursive method, considering the transverse inertia effect of the pile, the semi-analytical solution to the velocity response at the pile top under action of transient excitation was obtained by using the convolution theorem and Fourier transformation. Furthermore, the rationality of the obtained solution was verified, and it was compared with the degenerate solution and the measured curve. Finally, effects of pile pitch radius and spacing, and cement soil around pile's parameters on the dynamic response at the pile top were analyzed to raise relevant issues paid attention to in low-strain integrity tests of static drill rooted nodular piles. © 2019, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：49 / 56and86
页数：5637
相关论文
共 21 条
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