Subsidence estimation of breakwater built on loosely deposited sandy seabed foundation: Elastic model or elasto-plastic model

doi:10.1016/j.ijnaoe.2016.11.006

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	Subsidence estimation of breakwater built on loosely deposited sandy seabed foundation: Elastic model or elasto-plastic model
	Wu, Huaicheng 1; Shen, Jianhua 2; Zhang, Yuting 3
刊名	INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING
	2017
卷号	9 期号:4 页码:418-428
关键词	Loosely deposited seabed soil Consolidation Caisson breakwater Subsidence Biot's theory PZIII FSSI-CAS 2D
ISSN号	2092-6782
DOI	10.1016/j.ijnaoe.2016.11.006
英文摘要	In offshore area, newly deposited Quaternary loose seabed soils are widely distributed. There are a great number of offshore structures has been built on them in the past, or will be built on them in the future due to the fact that there would be no very dense seabed soil foundation could be chosen at planed sites sometimes. However, loosely deposited seabed foundation would bring great risk to the service ability of offshore structures after construction. Currently, the understanding on wave-induced liquefaction mechanism in loose seabed foundation has been greatly improved; however, the recognition on the consolidation characteristics and settlement estimation of loose seabed foundation under offshore structures is still limited. In this study, taking a semi-coupled numerical model FSSI-CAS 2D as the tool, the consolidation and settlement of loosely deposited sandy seabed foundation under an offshore breakwater is investigated. The advanced soil constitutive model Pastor-Zienkiewics Mark III (PZIII) is used to describe the quasi-static behavior of loose sandy seabed soil. The computational results show that PZIII model is capable of being used for settlement estimation problem of loosely deposited sandy seabed foundation. For loose sandy seabed foundation, elastic deformation is the dominant component in consolidation process. It is suggested that general elastic model is acceptable for subsidence estimation of offshore structures on loose seabed foundation; however, Young's modulus E must be dependent on the confining effective stress, rather than a constant in computation. Copyright (C) 2016 Society of Naval Architects of Korea. Production and hosting by Elsevier B.V.
WOS研究方向	Engineering
语种	英语
出版者	SOC NAVAL ARCHITECTS KOREA
WOS记录号	WOS:000406574900006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4096]
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.CCCC Fourth Harbor Engn Co Ltd; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.MOT, Tianjin Res Inst Water Transport Engn
推荐引用方式 GB/T 7714	Wu, Huaicheng,Shen, Jianhua,Zhang, Yuting. Subsidence estimation of breakwater built on loosely deposited sandy seabed foundation: Elastic model or elasto-plastic model[J]. INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING,2017,9(4):418-428.
APA	Wu, Huaicheng,Shen, Jianhua,&Zhang, Yuting.(2017).Subsidence estimation of breakwater built on loosely deposited sandy seabed foundation: Elastic model or elasto-plastic model.INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING,9(4),418-428.
MLA	Wu, Huaicheng,et al."Subsidence estimation of breakwater built on loosely deposited sandy seabed foundation: Elastic model or elasto-plastic model".INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING 9.4(2017):418-428.