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Seismic stability analysis of slopes with pre-existing slip surfaces
Su, Li-jun1,2,3; Sun, Chang-ning1,3; Yu, Fang-wei1,3; Ali, Sarfraz4,5
2018
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume15Issue:6Pages:1331-1341
SubtypeArticle
AbstractIn analyzing seismic stability of a slope with upper bound limit analysis method, the slip surface is often assumed as a log-spiral or plane slip surface. However, due to the presence of a weak layer and unfavorable geological structural surface or a bedrock interface with overlying soft strata, the preexisting slip surface of the slope may be irregular and composed of a series of planes rather than strictly log-spiral or plane shape. A computational model is developed for analyzing the seismic stability of slopes with pre-existing slip surfaces. This model is based on the upper bound limit analysis method and can consider the effect of anchor bolts. The soil or rock is deemed to follow the Mohr-Coulomb yield criterion. The slope is divided into multiple block elements along the slip surface. According to the displacement compatibility and the associated flow rule, a kinematic velocity field of the slope can be obtained computationally. The proposed model allows not only calculation of the rate of external work owing to the combined effect of self-weight and seismic loading, but also that of the energy dissipation rate caused by the slip surface, interfaces of block elements and anchorage effect of the anchors. Considering a direct relationship between the rate of external work and the energy dissipation rate, the expressions of yield acceleration and permanent displacement of anchored slopes can be derived. Finally, the validity of this proposed model is illustrated by analysis on three typical slopes. The results showed that the proposed model is more easily formulated and does not need to solve complex equations or time consuming iterations compared with previous methods based on the conditions of force equilibrium.
KeywordSlope stability Pre-existing slip surface Seismic loading Limit analysis Yield acceleration Permanent displacement
DOI10.1007/s11629-017-4759-3
Indexed BySCI
WOS KeywordGRAVITY RETAINING WALLS ; REINFORCED SLOPES ; BEARING CAPACITY ; KINEMATICAL APPROACH ; LIMIT ANALYSIS ; DISPLACEMENTS ; DESIGN ; CHARTS ; LOADS ; EMBANKMENTS
Language英语
Quartile4区
Funding ProjectNSFC-ICIMOD joint project[41761144077] ; Light of West "Belt & Road" international cooperation team project of Chinese Academy of Sciences ; Hundred Talents Program of Chinese Academy of Sciences ; NSFC (National Natural Science Foundation of China)[51278397]
TOP
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000435362700013
Funding OrganizationNSFC-ICIMOD joint project ; Light of West "Belt & Road" international cooperation team project of Chinese Academy of Sciences ; Hundred Talents Program of Chinese Academy of Sciences ; NSFC (National Natural Science Foundation of China)
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23320
Collection山地灾害与地表过程重点实验室
Corresponding AuthorSun, Chang-ning
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.NUST, SAGE, Islamabad, Pakistan
5.NUST, RCC, Islamabad, Pakistan
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Su, Li-jun,Sun, Chang-ning,Yu, Fang-wei,et al. Seismic stability analysis of slopes with pre-existing slip surfaces[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(6):1331-1341.
APA Su, Li-jun,Sun, Chang-ning,Yu, Fang-wei,&Ali, Sarfraz.(2018).Seismic stability analysis of slopes with pre-existing slip surfaces.JOURNAL OF MOUNTAIN SCIENCE,15(6),1331-1341.
MLA Su, Li-jun,et al."Seismic stability analysis of slopes with pre-existing slip surfaces".JOURNAL OF MOUNTAIN SCIENCE 15.6(2018):1331-1341.
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