Numerical simulation of the wave-induced dynamic response of poro-elastoplastic seabed foundations and a composite breakwater

doi:10.1016/j.apm.2014.05.031

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	Numerical simulation of the wave-induced dynamic response of poro-elastoplastic seabed foundations and a composite breakwater
	Ye, Jianhong 1,2,3; Jeng, Dongsheng 4; Ren, Wang 2; Zhu Changqi2
刊名	APPLIED MATHEMATICAL MODELLING
	2015
卷号	39 期号:1 页码:322-347
关键词	Composite breakwater FSSI-CAS 2D Loose seabed foundations Pastor-Zienkiewicz Mark III Progressive liquefaction Residual liquefaction
ISSN号	0307-904X
DOI	10.1016/j.apm.2014.05.031
英文摘要	In this study, an integrated numerical model FSSI-CAS 2D (previously known as POROWSSI 2D) is developed for the problem of wave-elasto-plastic seabed-structure interactions, where the Volume Average Reynolds Average Navier-Stokes (VARANS) equation is taken as the governing equation for wave motion and porous flow in porous medium; the dynamic Biot's equation known as "u - p" is taken as the governing equation for the dynamics of porous seabed soil under wave loading. The Pastor-Zienkiewicz Mark III proposed by Pastor et al. (1990) [45] is used to describe the dynamic behaviour of poro-elasto-plastic seabed under wave loading. This developed integrated numerical model is validated by a centrifuge test conducted by Sassa and Sekiguchi (1999) [30]. The developed integrated numerical model is applied to investigate the wave-induced dynamic response of a composite breakwater and its elasto-plastic seabed foundation. The numerical results indicate that the pore pressure in an elasto-plastic seabed builds up under wave loading, leading to the reduction of the contact effective stresses between soil particles. The residual liquefaction occurs when the effective stresses decrease to a value approaching zero. The wave-induced residual liquefaction in seabed is progressive downward. A parameter considering the cohesion and friction angle of soil is defined to evaluate the residual liquefaction potential. Analysis results illustrate that the friction angle of soil has significant effect on the soil liquefaction; and Nevada dense sand becomes liquefied if the defined parameter exceeded 0.86. Parametric study shows that wave characteristics and soil properties have significant effects on the wave-induced progressive residual liquefaction in loose elasto-plastic seabed foundation. (C) 2014 Elsevier Inc. All rights reserved.
WOS研究方向	Engineering ; Mathematics ; Mechanics
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000347598700024
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3670]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Univ Dundee, Div Civil Engn; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn ; 4.Griffith Univ, Griffith Sch Engn
推荐引用方式 GB/T 7714	Ye, Jianhong,Jeng, Dongsheng,Ren, Wang,et al. Numerical simulation of the wave-induced dynamic response of poro-elastoplastic seabed foundations and a composite breakwater[J]. APPLIED MATHEMATICAL MODELLING,2015,39(1):322-347.
APA	Ye, Jianhong,Jeng, Dongsheng,Ren, Wang,&Zhu Changqi.(2015).Numerical simulation of the wave-induced dynamic response of poro-elastoplastic seabed foundations and a composite breakwater.APPLIED MATHEMATICAL MODELLING,39(1),322-347.
MLA	Ye, Jianhong,et al."Numerical simulation of the wave-induced dynamic response of poro-elastoplastic seabed foundations and a composite breakwater".APPLIED MATHEMATICAL MODELLING 39.1(2015):322-347.