Seismic behaviors of soil slope in permafrost regions using a large-scale shaking table
文献类型：期刊论文
| 作者 | Sun, Hong1,2; Niu, FuJun2; Zhang, KaiJian1,2; Ge, XiuRun1 |
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 14期号:4页码:1513-1520 |
| ISSN号 | 1612-510X |
| 关键词 | Qinghai-Tibet Plateau Permafrost Soil layer at gentle gradient Landslide Shaking table Model test |
| DOI | 10.1007/s10346-017-0823-x |
| 通讯作者 | Sun, Hong(sunhong@sjtu.edu.cn) |
| 英文摘要 | Large-scale shaking table model tests were carried out to study the dynamic behaviors of slopes and failure mechanism of landslide in permafrost regions. The model slope was constituted of silty clay layer stacked on an ice layer with 8 degrees surface slope. Acceleration, displacement, and pore pressure were measured subjected to vertical and horizontal seismic loadings. The horizontal wave has a stronger influence on the failure of the model than the vertical wave motion, and the natural frequency of vibration in the horizontal direction decreased obviously at the failure state. The model slope has three components of different nonlinear mechanical properties, which are the soil layer, soil-ice interface, and ice layer. The amplification factor of peak ground acceleration is obviously smaller at the soil-ice interface than that at the soil and ice layer. The acceleration responses are nonlinear because of the nonlinear soil properties and degradation of modulus with increasing horizontal acceleration. Especially, excess pore pressure generation was observed near the soil-ice interface of the slope subjected to higher input acceleration, which resulted in the decrease of the effective stress. Failure surface appeared to be the soil-ice interface, which was consistent with the field observations of landslides in permafrost regions. Slope failure could be defined based on the massive movement of the slope, characterized by integral sliding pattern along the soil-ice interface without the distinct deformation inside the sliding body. The results show that the sliding of the slope with soil layer at gentle gradient is mainly triggered by the combined action of horizontal seismic wave, existence of soil-ice interface, and pore pressure generation in permafrost regions. |
| 收录类别 | SCI |
| WOS关键词 | LAYER DETACHMENT FAILURES ; NORTHERN CANADA ; ALASKA ; FLOWS |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Geological ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000407929600018 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557652 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Sun, Hong |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hong,Niu, FuJun,Zhang, KaiJian,et al. Seismic behaviors of soil slope in permafrost regions using a large-scale shaking table[J]. LANDSLIDES,2017,14(4):1513-1520. |
| APA | Sun, Hong,Niu, FuJun,Zhang, KaiJian,&Ge, XiuRun.(2017).Seismic behaviors of soil slope in permafrost regions using a large-scale shaking table.LANDSLIDES,14(4),1513-1520. |
| MLA | Sun, Hong,et al."Seismic behaviors of soil slope in permafrost regions using a large-scale shaking table".LANDSLIDES 14.4(2017):1513-1520. |
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来源：寒区旱区环境与工程研究所
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