Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2016 , Vol. 50 >Issue 11: 1737 - 1741

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2016.11.013

Analysis of a Single Pile Response in a Saturated Seabed Under Short-Crested Wave

Expand
  • 1.Department of Civil Engineering
    2.State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Received date: 2015-12-14

  Online published: 2021-04-25

Fold

Abstract

A 3D FEM model of a single pile in saturated sandy seabed was proposed to study the reponse of pile. Meanwhile, the quasi-static method and fluid-soil coupling and contact behavior on interface was considered. Based on numerical results, responses of the pore water pressure and stress of seabed soil under wave was studied, and the deformation and internal force of the single pile were discussed. Besides, two different methods to model the pile-soil interface were discussed with a comparison of the free field seabed model and seabed model with a totally embeded pile. The results show that the pore water pressure increases significantly near the mudline and bottom of pile. Responses of pore pressure and bending moment are evidently larger in the coupling model, but the displacement response is smaller. Moreover, the totally embeded pile model is mainly affected by seabed, as the wave dominatedly acts on the model with a pile out of the seabed.

Key words： short-crested wave; saturated sandy seabed; single pile; interface; interaction; pile and soil couple

Cite this article

HU Xiang, CHEN Jingjian, WANG Jianhua . Analysis of a Single Pile Response in a Saturated Seabed Under Short-Crested Wave[J]. Journal of Shanghai Jiaotong University, 2016 , 50(11) : 1737 -1741 . DOI: 10.16183/j.cnki.jsjtu.2016.11.013

References

[1] BEA R G, WRIGHT S G. Wave-induced slides in south pass block 70, Mississippi Delta[J]. Journal of Geotechnical Engineering, 1983, 109(4): 619-644.
[2] 赵刚. 胜利作业三号平台“9·7”倾斜事故分析[J]. 现代职业安全, 2011(7): 100-102.
[2] ZHAO Gang. Case study about“9·7”inclination of the Shengli No. 3work platform[J]. Mordern occupation safety, 2011(7): 100-102.
[3] YAMAMOTO T, KONING H L, SELLMEIJER H, et al. On the response of a pore-elastic bed to water waves[J]. Journal of Fluid Mechanics, 1978, 87(1): 193-206.
[4] JENG D S, HSU J R C. Wave-induced soil response in a nearly saturated seabed of finite thickness[J]. Geotechnique, 1996, 46(3): 427-440.
[5] TSAI C P, Wave-induced liquefaction potential in a porous seabed in front of a breakwater[J]. Ocean Eng, 1997, 24(10): 887-917.
[6] BHATTACHARYA S. Experimental validation of soil-structure interaction of offshore wind turbines[J]. Soil Dynamics and Earthquake Engineering, 2011, 31(5): 805-816.
[7] LI X J, GAO F P, YANG B. Wave-induced pore pressure and soil liquefaction around pile foundation[J]. International Journal of Offshore and Polar Engineering, 2011, 21(3): 233-239.
[8] JIANG L, WANG K H. Hydrodynamic interactions of cnoidal waves with a vertical cylinder[J]. Appl Ocean Res, 1996, 17(5): 277-289.
[9] MORISON J R, O’BRIEN M P, Johnson J W, et al. The forces exerted by surface waves on piles[J]. Petroleum Technol Petroleum Trans AIME, 1950, 2(5): 149-154.
[10] 胡翔, 陈锦剑. 波浪荷载下海底单桩与土共同作用的数值分析[J]. 岩土工程学报, 2015, 37(Z2): 217-221.
[10] HU Xiang, CHEN Jingjian. Numerical analysis of interactive behavior between pile and seabed soil under wave load[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(Z2): 217-221.
[11] JENG D S, CHA D H. Effects of dynamic soil behavior and save non-linearity on the wave-induced pore pressure and effective stresses in porous seabed[J]. Ocean Engineering, 2003, 30(16): 2065-2089.
[12] HSU J R C. Third-order approximation to short-crested waves[J]. Journal of Fluid Mechanics, 1979, 90(90): 179-196.
[13] 中华人民共和国交通运输部. 海港水文规范: JTJ213-98[S]. 北京: 人民交通出版社, 1998.
Options
Outlines

/

〈 〉