Seismic stability analysis of slopes with pre-existing slip surfaces
文献类型：期刊论文
| 作者 | Su, Li-jun1,2,3 ; Sun, Chang-ning1,3; Yu, Fang-wei1,3; Ali, Sarfraz4,5
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
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| 出版日期 | 2018-06-01 |
| 卷号 | 15期号:6页码:1331-1341 |
| 关键词 | Slope stability Pre-existing slip surface Seismic loading Limit analysis Yield acceleration Permanent displacement |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-017-4759-3 |
| 英文摘要 | In 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000435362700013 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23320]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Sun, Chang-ning |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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