Continuum and discrete element coupling approach to analyzing seismic responses of a slope covered by deposits
文献类型：期刊论文
| 作者 | Zhang Hua ; Lu Yang |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2010-09 |
| 卷号 | 7期号:3页码:264–275 |
| 关键词 | Slope deposit continuum discrete element method dynamic coupling rock/soil interface |
| ISSN号 | 1672-6316 |
| 通讯作者 | Lu, Y |
| 英文摘要 | Numerical analyses of earthquake effects on the deformation, stability, and load transfer of a slope covered by deposits are traditionally based on the assumption that the slope is a continuum. It would be problematic, however, to extend these approaches to the simulation of the slide, collapse and disintegration of the deposits under seismic loading. Contrary to this, a discrete element method (DEM) provides a means to consider large displacement and rotation of the non-continuum. To take the advantages of both methods of continuum and non-continuum analyses, seismic responses of a slope covered by deposits are studied by coupling a two-dimensional (2-D) finite difference method and a 2-D DEM, with the bedrock being modelled by the finite difference grids and the deposits being represented by disks. A smooth transition across the boundaries of the continuous/discontinuous domains is obtained by imposing the compatibility condition and equilibrium condition along their interfaces. In the course of computation, the same time-step value is chosen for both continuous and discontinuous domains. The free-field boundaries are adopted for lateral grids of bedrock domain to eliminate the radiation damping effect. When the static equilibrium under gravity load is obtained, dynamic calculation begins under excitation of the seismic wave input from the continuum model bottom. In this way, responses to the earthquake of a slope covered by deposits are analyzed dynamically. Combined with field monitoring data, deformation and stability of the slope are discussed. The effects of the relevant parameters of spectrum characteristic, duration, and peak acceleration of seismic waves are further investigated and explained from the simulations. |
| 语种 | 英语 |
| 公开日期 | 2013-08-12 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5899]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2010_Vol7 No.3 |
| 推荐引用方式 GB/T 7714 | Zhang Hua,Lu Yang. Continuum and discrete element coupling approach to analyzing seismic responses of a slope covered by deposits[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(3):264–275. |
| APA | Zhang Hua,&Lu Yang.(2010).Continuum and discrete element coupling approach to analyzing seismic responses of a slope covered by deposits.JOURNAL OF MOUNTAIN SCIENCE,7(3),264–275. |
| MLA | Zhang Hua,et al."Continuum and discrete element coupling approach to analyzing seismic responses of a slope covered by deposits".JOURNAL OF MOUNTAIN SCIENCE 7.3(2010):264–275. |
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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