Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope

doi:10.1016/j.jrmge.2019.06.012

	Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope
	Sun, Zhiliang 1,2; Kong, Lingwei 1,2; Guo, Aiguo 1,2; Alam, Mohammad 1,2
刊名	JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
	2020-04-01
卷号	12 期号:2 页码:381-394
关键词	Centrifuge model test Acceleration responses Excess pore pressure Deposit slope
ISSN号	1674-7755
DOI	10.1016/j.jrmge.2019.06.012
英文摘要	Partially submerged deposit slopes are often encountered in practical engineering applications. However, studies on evaluating their stability under seismic loading are still rare. In order to understand the seismic behavior of partially submerged deposit slopes, centrifuge shaking table model tests (50g) were employed. The responses of horizontal accelerations, accumulated excess pore pressures, deformation mode, and failure mode of the partially submerged deposit slope model were analyzed. In dynamic centrifuge model tests, EQ5 shaking event was applied numerically. The results indicated that in the saturated zone of the deposit slope, liquefaction did not occur, and the measured horizontal accelerations near the water table were amplified as a layer-magnification effect. It was also shown that the liquefaction-resistance of the deposit slope increased under multiple sequential ground motions, and the deformation depth of the deposit slope induced by earthquake increased gradually with increasing dynamic load amplitude. Except for the excessive crest settlement generated by strong shaking, an additional vertical permanent displacement was initiated at the slope crest due to the dissipation of excess pore pressure under seismic loading. The result of particle image velocimetry (PIV) analysis showed that an obvious internal arc-slip was generated around the water table of the partially submerged deposit slope under seismic loading. (C) 2020 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
资助项目	National Natural Science Foundation of China[41702348] ; National Natural Science Foundation of China[41372314] ; Natural Science Foundation of Hubei Province, China[2017CFB373]
WOS研究方向	Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000522675200013
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/23784]
专题	中科院武汉岩土力学所
通讯作者	Sun, Zhiliang
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zhiliang,Kong, Lingwei,Guo, Aiguo,et al. Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2020,12(2):381-394.
APA	Sun, Zhiliang,Kong, Lingwei,Guo, Aiguo,&Alam, Mohammad.(2020).Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,12(2),381-394.
MLA	Sun, Zhiliang,et al."Centrifuge model test and numerical interpretation of seismic responses of a partially submerged deposit slope".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 12.2(2020):381-394.