A debris-flow impact pressure model combining material characteristics and flow dynamic parameters
文献类型：期刊论文
| 作者 | Tang, Jin-bo ; Hu, Kai-heng1
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 15期号:12页码:2721-2729 |
| 关键词 | Debris flows Impact pressure Dynamical responses Mechanical impedance |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-018-5114-z |
| 产权排序 | 1 |
| 通讯作者 | Hu, Kai-heng(khhu@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | Impact force is a crucial factor to be considered in debris-resisting structure design. The impact of debris flow against a structural barrier depends not only on the flow dynamics but also on the barrier material. Based on the structural vibration equation and energy conservation law, a simple model for calculating debris-flow impact pressure is proposed, which includes the mechanical impedance of the material, debris-flow velocity and Froude number. Twenty-five impact tests have been conducted using different kinds of materials: steel, black granite, white granite, marble and polyvinyl chloride (PVC) board, and the ratio of the maximum impact time to the vibration period of the structure is determined for the model. It is found that the ratio's square root shows a linear relationship with the material solid Froude number. This indicates that the impedance of the structures plays an important role in the flow-barrier interaction. Moreover, the debrisflow impact force is found to decrease with the travel time of the elastic stress wave though the structures. |
| WOS关键词 | JIANGJIA RAVINE ; PARTICLE-SIZE ; FORCE |
| 资助项目 | National Natural Science Foundation of China[41771045] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000453393800013 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24739]  |
| 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 | Hu, Kai-heng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China; 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tang, Jin-bo,Hu, Kai-heng. A debris-flow impact pressure model combining material characteristics and flow dynamic parameters[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(12):2721-2729. |
| APA | Tang, Jin-bo,&Hu, Kai-heng.(2018).A debris-flow impact pressure model combining material characteristics and flow dynamic parameters.JOURNAL OF MOUNTAIN SCIENCE,15(12),2721-2729. |
| MLA | Tang, Jin-bo,et al."A debris-flow impact pressure model combining material characteristics and flow dynamic parameters".JOURNAL OF MOUNTAIN SCIENCE 15.12(2018):2721-2729. |
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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