Experimental and numerical investigations of the seismic response of a rock-soil mixture deposit slope
文献类型：期刊论文
| 作者 | Sun, Zhiliang; Kong, Lingwei; Guo, Aiguo; Xu, Guofang; Bai, Wei |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2019 |
| 卷号 | 78期号:24页码:- |
| 关键词 | Rock-soil mixture deposit Centrifuge modelling test Numerical simulation Acceleration amplification Failure mode |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-019-8717-y |
| 英文摘要 | Inertial instability-induced slope failure is one of the most destructive seismic hazards encountered in China. Depositional slopes are widely distributed across the south-western part of China. To study the seismic performance of rock-soil mixture deposit (RSMD) slopes in detail, physical and mechanical tests of air-dried RSMD, and a 1:50 geometric scale, generalised RSMD slope centrifugal shaking table modelling tests were conducted. The acceleration response, slope deformation, and instability mode of the air-dried RSMD slope under the continuous action of four earthquakes with different intensities are analysed. Besides, the dynamic finite-difference numerical simulations were performed with FLAC to simulate the centrifuge model test. The numerical simulation results were compared with the test results in terms of the horizontal acceleration response, time history of crest settlements, and the slope failure characteristics. The results show that the horizontal peak ground acceleration (PGA) amplification factors of the RSMD slope reflect typical elevation, and surface, amplification effects. In addition, the spectral distribution of the seismic wave has changed significantly with propagation along the slope elevation. The energy of input seismic wave in a frequency range close to the natural frequency of an RSMD slope is significantly amplified. During the test, it was observed that the failure of an air-dried RSMD slope occurred when the PGA reached 0.216 g, and the settlement at the crest of the slope was obvious. The failure mode was dominated by shallow collapse. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000501211200003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14805]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Zhiliang,Kong, Lingwei,Guo, Aiguo,et al. Experimental and numerical investigations of the seismic response of a rock-soil mixture deposit slope[J]. ENVIRONMENTAL EARTH SCIENCES,2019,78(24):-. |
| APA | Sun, Zhiliang,Kong, Lingwei,Guo, Aiguo,Xu, Guofang,&Bai, Wei.(2019).Experimental and numerical investigations of the seismic response of a rock-soil mixture deposit slope.ENVIRONMENTAL EARTH SCIENCES,78(24),-. |
| MLA | Sun, Zhiliang,et al."Experimental and numerical investigations of the seismic response of a rock-soil mixture deposit slope".ENVIRONMENTAL EARTH SCIENCES 78.24(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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