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Nonlinear standing wave-induced liquefaction in loosely deposited seabed

文献类型：期刊论文

作者Yang, Guoxiang1; Ye, Jianhong1,2
刊名BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
出版日期2018
卷号77期号:1页码:205-223
关键词Pore pressure build-up Progressive residual liquefaction Loosely deposited seabed floor Nonlinear standing wave Pastor-Zienkiewicz Mark III FSSI-CAS 2D
ISSN号1435-9529
DOI10.1007/s10064-017-1038-z
英文摘要Wave-induced residual liquefaction in loose seabed floor brings great risk to the stability of offshore structures in extreme climates. Understanding the characteristics of wave-induced residual liquefaction due to pore pressure buildup in loose seabed is meaningful for engineers involved in the design of offshore structures. In this study, standing wave-induced residual liquefaction is investigated deeply and comprehensively adopting a validated integrated numerical model. The time history of standing wave-induced pore pressure, effective stress, shear stress, lateral pressure coefficient stress angle, and displacement of seabed surface are all quantitatively demonstrated. The variation process of progressive liquefaction, stress path, as well as the stress-strain relation also are illustrated in detail. It is shown that the integrated numerical model FSSI-CAS 2D (FSSI: fluid-structures-seabed interaction, CAS: Chinese Academy of Sciences) incorporating the PZIII soil model can effectively and precisely capture a series of nonlinear dynamic response characteristics of loose seabed floors under standing wave loading. The computational results further confirm that the wave-induced liquefaction in loose seabed soil is progressive downward, initiating at the seabed surface. In addition, it is found that two physical processes, including vertical distribution of oscillatory pore pressure and time history of stress angle possibly could be used to judge the occurrence of wave-induced residual liquefaction in loose seabeds. Furthermore, it is also found that the progressive liquefaction process is significantly affected by wave height, permeability and saturation of seabed soil.
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000424335400014
出版者SPRINGER HEIDELBERG
源URL[http://119.78.100.198/handle/2S6PX9GI/4210]  
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.China Univ Geosci Beijing, Sch Engn & Technol, Dept Civil Engn ;
2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式
GB/T 7714		 Yang, Guoxiang,Ye, Jianhong. Nonlinear standing wave-induced liquefaction in loosely deposited seabed[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2018,77(1):205-223.
APA Yang, Guoxiang,&Ye, Jianhong.(2018).Nonlinear standing wave-induced liquefaction in loosely deposited seabed.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,77(1),205-223.
MLA Yang, Guoxiang,et al."Nonlinear standing wave-induced liquefaction in loosely deposited seabed".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 77.1(2018):205-223.

入库方式： OAI收割

来源：武汉岩土力学研究所

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