Dynamic Response of Pile at Waterwave Load and Seismic Load

doi:10.16183/j.cnki.jsjtu.2020.142

Abstract

Abstract:

The pile foundation of offshore wind turbines is not only subjected to the cyclic action of wave load, but also the threat of seismic load. Therefore, the environment of pile in the ocean is complex. However, most theoretical investigations have often focused on the seabed response at water wave load or seismic load respectively. In this paper, a wave-seismic-pile-seabed coupling model is constructed by using the finite element method. The numerical analysis is based on the implicit dynamic analysis in Abaqus. Morison’s equations are used to simulate the effect of water wave on pile foundation. The Mohr-Coulomb model is adopted to simulate the seabed while the pile is considered as an elastic medium. The earthquake is applied on the bottom of the model as acceleration. The dynamic response of the pile embedded in seabed are studied, such as acceleration, displacement, shear force, and bending moment. The results show that seismic load has an important influence on the single pile foundation of offshore wind turbine. Under the action of earthquake load, the acceleration and displacement response of the pile are amplified to a certain extent. The properties of the soil and the parameters of the pile are crucial to the design of the single pile foundation for offshore wind turbines.

Key words: pile, wave load, seismic load, Morison’s equation, dynamic response

CLC Number:

TU42

LIU Chenchen, ZHANG Qi, LI Mingguang, ZHOU Xianglian, LI Weijie. Dynamic Response of Pile at Waterwave Load and Seismic Load[J]. Journal of Shanghai Jiao Tong University, 2021, 55(6): 638-644.

Figures/Tables 12

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References 8

[1]	刘宗贤, 李玉亭. 桩基础在阻尼与分层弹性地基场地土波动影响下的横向地震反应分析[J]. 地震工程与工程振动, 1994, 14(3):47-59.
	LIU Zongxian, LI Yuting. The lateral seismic response analysis for the pile foundation under the influence of damping and layer elasto-foundation bed site soil wave motion[J]. Earthquake Engineering and Engineering Vibration, 1994, 14(3):47-59.
[2]	KJØRLAUG R A, KAYNIA A M. Vertical earthquake response of megawatt-sized wind turbine with soil-structure interaction effects[J]. Earthquake Engineering & Structural Dynamics, 2015, 44(13):2341-2358.
[3]	吴小峰, 朱斌, 汪玉冰. 水平环境荷载与地震动联合作用下海上风机单桩基础动力响应模型试验[J]. 岩土力学, 2019, 40(10):3937-3944.
	WU Xiaofeng, ZHU Bin, WANG Yubing. Dynamic model test on monopile for offshore wind turbine under jointed lateral environmental load and seismic load[J]. Rock and Soil Mechanics, 2019, 40(10):3937-3944.
[4]	LU J F, JENG D S. Dynamic response of a porous seabed and an offshore pile to linear water waves[C]// Proceedings of ASME Conference on ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering, Estoril, Portugal: ASME, 2009: 615-622.
[5]	SUI T T, ZHANG C, GUO Y K, et al. Three-dimensional numerical model for wave-induced seabed response around mono-pile[J]. Ships and Offshore Structures, 2016, 11(6):667-678. doi: 10.1080/17445302.2015.1051312 URL
[6]	李琪, 周文杰, 童建国, 等. 台风环境中典型海上风机结构的动力响应数值分析[J]. 中国海洋平台, 2019, 34(3):32-39.
	LI Qi, ZHOU Wenjie, TONG Jianguo, et al. Numerical analysis on dynamic response of typical structure of offshore wind turbines under typhoon[J]. China Offshore Platform, 2019, 34(3):32-39.
[7]	MORISON J R, JOHNSON J W, SCHAAF S. The force exerted by surface waves on piles[J]. Journal of Petroleum Technology, 1950, 2(5):149-154. doi: 10.2118/950149-G URL
[8]	PEIRIS T P, THAMBIRATNAM D P, PERERA N, et al. Soil-pile interaction of pile embedded in deep-layered marine sediment under seismic excitation[J]. Structural Engineering International, 2014, 24(4):521-531. doi: 10.2749/101686614X13854694314720 URL

土层	厚度/ m	密度/ (kg·m^-3)	弹性模量/ MPa	泊松比	摩擦角/ (°)	黏聚力/ kPa
1	16	1631	10	0.4	0	39
2	6	1835	15	0.4	0	59
3	2	1886	21	0.4	0	83
4	2	1937	63	0.3	35	0
5	7	1937	248	0.3	50	0

物理量	数值
海水密度/(kg·m^-3)		1000
波高/m		1.5
波浪周期/s		5
水深/m		10
海床厚度/m		30
海床尺寸/(m×m)		50×50
土体密度/(kg·m^-3)		1850
土体泊松比		0.35
土体弹性模量/MPa		40
土体摩擦角/(°)		30
桩长/m		30
埋深/m		20
桩直径/m		2
桩密度/(kg·m^-3)		2300
桩泊松比		0.15
弹性模量/GPa		20

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