Horizontal seismic response of end-bearing piles in unsaturated soil foundation under SH waves

被引：0
|
作者：
Zou X. [1 ,2 ]
Yang Z. [1 ]
Wu W. [3 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] Key Laboratory of Building Safety and Energy Efficiency of Ministry of Education, Hunan University, Hunan, Changsha
[3] Faculty of Engineering, China University of Geosciences, Wuhan
来源：
Yantu Gongcheng Xuebao/Chinese Journal of Geotechnical Engineering | 2024年 / 46卷 / 01期
关键词：
end-bearing pile; Euler beam model; horizontal vibration; SH wave; unsaturated soil;
D O I：
10.11779/CJGE20221125
中图分类号：
学科分类号：
摘要：
In order to study the horizontal seismic response of end-bearing piles in unsaturated soils subjected to SH waves, the free field vibration of soils induced by SH waves is firstly obtained based on the one-dimensional wave theory. Then, considering the dynamic shear modulus of soils to change with saturation, an unsaturated soil-pile coupling vibration model is established by using the three-dimensional continuum mechanics and the Euler beam model. By introducing the potential function and the separation of variables, the expressions for the interaction and amplification factors of horizontal displacement of pile head and the pile curvature ratio are derived, and verified by comparison with the previous research results. Finally, the influences of soil saturation, pile length-diameter ratio and viscous damping of soils on the horizontal seismic characteristics of piles and their variation reasons are discussed. The results show that saturation and pile length-diameter ratio have significant effects on the interaction and amplification factors of horizontal displacement of pile head only in the high frequency range. With the increase of soil viscous damping, the interaction and amplification factors increase and decrease respectively only at the resonant frequency. © 2024 Chinese Society of Civil Engineering. All rights reserved.
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页码：72 / 80
页数：8
相关论文
共 17 条
  • [1] ZHENG Changjie, LIN Hao, CAO Guangwei, Et al., Analytical solution for dynamic response of offshore large-diameter pipe piles subjected to horizontal dynamic loads, Chinese Journal of Geotechnical Engineering, 44, 5, pp. 810-819, (2022)
  • [2] ZOU Xinjun, DU Haotong, WANG Yaxiong, Bearing behavior of a single pile in double-layered nonhomogeneous subsoil under V-T combined loads, Chinese Journal of Geotechnical Engineering, 40, 10, pp. 1843-1851, (2018)
  • [3] ZHENG C J, KOURETZIS G, LUAN L B, Et al., Kinematic response of pipe piles subjected to vertically propagating seismic P-waves, Acta Geotechnica, 16, 3, pp. 895-909, (2021)
  • [4] HE R, KAYNIA A M, ZHANG J S., Lateral free-field responses and kinematic interaction of monopiles to obliquely incident seismic waves in offshore engineering, Computers and Geotechnics, 132, (2021)
  • [5] ANOYATIS G, DI LAORA R, MANDOLINI A, Et al., Kinematic response of single piles for different boundary conditions: analytical solutions and normalization schemes, Soil Dynamics and Earthquake Engineering, 44, pp. 183-195, (2013)
  • [6] YANG Xiao, FANG Xiaowen, WANG Dejiang, Dynamic interaction of pile-soil-superstructure in liquefied soil under sh wave, Engineering Mechanics, 34, 1, pp. 101-108, (2017)
  • [7] LIU Hao, WU Wenbing, JIANG Guosheng, Et al., Influences of soil plug effect on apparent wave velocity of pipe piles during low-strain integrity, Chinese Journal of Geotechnical Engineering, 41, 2, pp. 383-389, (2019)
  • [8] ZHAO Mi, HUANG Yiming, WANG Piguang, Et al., Analytical solution for water-pile-soil interaction under horizontal dynamic loads on pile head, Chinese Journal of Geotechnical Engineering, 44, 5, pp. 907-915, (2022)
  • [9] YANG Zijian, WU Wenbing, LU Hongzhi, Et al., Horizontal vibration characteristics of tapered pile embedded in viscoelastic foundation, Journal of Harbin Institute of Technology, 53, 11, pp. 74-83, (2021)
  • [10] YAN Qifang, LIU Linchao, Lateral vibration of a single pile under SH harmonic seismic waves considering three-dimensional wave effect, Chinese Journal of Geotechnical Engineering, 34, 8, pp. 1483-1487, (2012)
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