Horizontal vibration of partially embedded piles in unsaturated foundation

被引：0
|
作者：
Yang Z.-J. [1 ]
Liu H. [1 ]
Zhang Y.-P. [1 ]
Qiu M. [3 ]
Wu W.-B. [1 ,2 ]
机构：
[1] Faculty of Engineering, China University of Geosciences, Wuhan
[2] Zhejiang Institute, China University of Geosciences, Hangzhou
[3] CCCC Second Maritime Engineering Bureau Co. Ltd., Wuhan
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2023年 / 36卷 / 01期
关键词：
dynamic impedance; horizontal vibration; partially embedded pile; Timoshenko beam model; unsaturated soil;
D O I：
10.16385/j.cnki.issn.1004-4523.2023.01.026
中图分类号：
学科分类号：
摘要：
In this paper, the horizontal vibration of partially embedded piles in unsaturated soil is mainly studied. In order to simulate the real service state of high bearing platform piles of bridge pile foundation, considering the combined action of horizontal harmonic load and vertical static load, the coupled vibration theoretical model of unsaturated soil and partially embedded piles is established by using Timoshenko beam model and three dimensional continuum model. The analytical solution of horizontal dynamic response of pile is obtained by the decomposition technique of potential technique and the transfer matrix method. The rationality of the solution is verified by comparing the proposed solution with the results of previous scholars. Based on the established theoretical model, the influence of vertical load, embedding ratio and saturation on the horizontal dynamic characteristics of partially embedded piles are discussed in detail. The results show that: the stiffness factor decreases rapidly with the increasement of vertical load, but the damping factor decreases slightly at the time; Both stiffness factor and damping factor decrease with the increase of embedding ratio; The horizontal displacement, rotation angle, bending moment and shear amplitude of the pile increase with the increasement of the embedding ratio, and the amplitude position moves upward gradually; When the saturation is greater than 0.9, the stiffness factor increases rapidly with the increase of saturation, and the damping factor basically remains unchanged. © 2023 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：247 / 255
页数：8
相关论文
共 21 条
  • [1] Lee B K, Jeong J S, Fan L G, Et al., Free vibrations of tapered piles embedded partially in Winkler type foundations, Journal of Civil Engineering, 3, 2, pp. 195-203, (1999)
  • [2] Catal H H., Free vibration of partially supported piles with the effects of bending moment, axial and shear force, Engineering Structures, 24, 12, pp. 1615-1622, (2002)
  • [3] Catal H H., Free vibration of semi-rigid connected and partially embedded piles with the effects of the bending moment, axial and shear force, Engineering Structures, 28, 14, pp. 1911-1918, (2006)
  • [4] Yesilce Y, Catal H H., Free vibration of piles embedded in soil having different modulus of subgrade reaction, Applied Mathematical Modelling, 32, 5, pp. 889-900, (2008)
  • [5] Sapountzakis E J, Kampitsis A E., Nonlinear dynamic analysis of Timoshenko beam columns partially supported on tensionless Winkler foundation, Computers & Structures, 88, 21, pp. 1206-1219, (2010)
  • [6] Ren Qing, Huang Maosong, Han Dongxiao, Horizontal vibration characteristics of partially embedded pile group foundation considering axial forces, Chinese Journal of Rock Mechanics and Engineering, 30, 9, pp. 1932-1944, (2011)
  • [7] Huang Maosong, Zhong Rui, Coupled horizontal-rocking vibration of partially embedded pile group and its effect on resonance of offshore wind turbine structures, Chinese Journal of Geotechnical Engineering, 36, 2, pp. 286-294, (2014)
  • [8] Xiong Hui, Yang Feng, Analysis of horizontal vibration response of liquefied soil pile foundation under Winkler foundation model, Rock and Soil Mechanics, 41, 1, pp. 103-110, (2020)
  • [9] Liu Y Y, Wang X H, Zhang M., Lateral vibration of pile groups partially embedded in layered saturated soils [J], International Journal of Geomechanics, 15, 4, (2015)
  • [10] Hu A F, Fu P, Xia C Q, Et al., Lateral dynamic response of a partially embedded pile subjected to combined loads in saturated soil, Marine Georesources and Geotechnology, 35, 6, pp. 788-798, (2017)
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