Large-scale shaking table tests on the seismic responses of soil slopes with various natural densities
文献类型：期刊论文
| 作者 | Su, Lijun1,2,3,4 ; Li, Cheng1,4; Zhang, Chonglei1,2
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| 刊名 | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
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| 出版日期 | 2021 |
| 卷号 | 140页码:106409 |
| ISSN号 | 0267-7261 |
| 关键词 | Shaking table test Density Failure process Dynamic response Spectral characteristic Mechanical property |
| DOI | 10.1016/j.soildyn.2020.106409 |
| 通讯作者 | Zhang, Chonglei(zhangchonglei@imde.ac.cn) |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | To distinguish how the natural density of soil affects the seismic response of a soil slope, three large-scale shaking table tests are conducted on slopes of different densities under seismic excitations. The natural density of the homogeneous dense slope (HDS, case #1) is 1.65 g/cm(3); that of the heterogeneous graded slope (HGS, case #2) increases from 1.35 g/cm(3) to 1.65 g/cm(3) with depth; that of the homogeneous loose slope (HLS, case #3) is 1.35 g/cm(3). The failure processes, acceleration response laws, spectral characteristics, dynamic strain responses and shear stress-strain behaviours observed during the three tests are compared. The results show that the soil density distribution has a significant effect on the seismic response of a slope. The HGS and HLS fail suddenly under peak ground accelerations (PGAs) of 0.6 g and 0.5 g, respectively. The failure zone in the upper HLS is larger than that in the HGS. The acceleration amplification effect of the HDS is weak, while those of the HGS and HLS gradually increase with the PGA. The position and energy required to produce a nonlinear acceleration amplification factor effect are closely related to the natural density of the slope. The acceleration amplification factors of the HGS and HLS show nonlinear effects at 0.50 times and 0.357 times the slope height, respectively, and the corresponding PGAs are 0.4 g and 0.3 g. With an increasing natural density, the acceleration amplification factor decreases gradually, and more energy is required for the slope to fail under earthquake activity. The acceleration response law is related to the shape and amplitude of the peak in the fast Fourier transform (FFT) spectrum. The dominant frequency differences among the FFT spectra show that the lower the natural density of the slope is, the lower the location of damage in the slope. Combining the results of the peak micro-strain and shear stress-strain behaviour of the three slopes, the shear modulus of the HDS is the highest, and that of the HLS is the lowest. |
| 电子版国际标准刊号 | 1879-341X |
| WOS关键词 | DYNAMIC-RESPONSE ; FAILURE MODE ; SPATIAL-DISTRIBUTION ; GROUND MOTION ; SHEAR MODULUS ; EARTHQUAKE ; BEHAVIOR ; AMPLIFICATION ; MECHANISM |
| 资助项目 | National Natural Science Foundation of China[41790432] ; National Natural Science Foundation of China[41761144077] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20030301] ; Youth Innovation Promotion Association CAS[2019364] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000599416500001 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/55096]  |
| 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 | Zhang, Chonglei |
| 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.China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Lijun,Li, Cheng,Zhang, Chonglei. Large-scale shaking table tests on the seismic responses of soil slopes with various natural densities[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2021,140:106409. |
| APA | Su, Lijun,Li, Cheng,&Zhang, Chonglei.(2021).Large-scale shaking table tests on the seismic responses of soil slopes with various natural densities.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,140,106409. |
| MLA | Su, Lijun,et al."Large-scale shaking table tests on the seismic responses of soil slopes with various natural densities".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 140(2021):106409. |
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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