Experimental and theoretical study of mechanical properties of root-soil interface for slope protection
文献类型：期刊论文
| 作者 | Su, Li-jun; Hu, Bing-li; Xie, Qi-jun; Yu, Fang-wei; Zhang, Chong-lei |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:11页码:2784-2795 |
| 关键词 | Ecological slope-protection Anchoring force Pullout experiment Pullout model Model prediction |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6077-4 |
| 通讯作者 | Xie, Qi-jun(qijunxie@imde.ac.cn) |
| 文献子类 | Article |
| 英文摘要 | Plant roots mechanically enhance the strength of soil and improve slope stability through anchoring. Given the popularization of ecological slope-protection technology, a quantitative study of how roots help to anchor soil is highly pertinent. The object of the present study is thus to investigate how roots and soil combine to affect the mechanical properties of the root-soil interface. Toward this end, pullout experiments of cedar roots of different diameters in soils of different density were conducted. The experimental results show that the maximum pullout force increases significantly with increasing root diameter, but only slightly increases with increasing soil density, which indicates that the root diameter has a greater impact on the maximum pullout force than soil density. Next, based on studies of fiber-reinforced composites, a root-soil pull-out model was proposed to study the evolution of shear stress on root-soil interface. This approach ensures that the model accurately reflects the dynamic stress distribution evolution at the root-soil interface and can calculate the pullout process of embedded root from soil. The accuracy of the model is verified by comparing the calculated results with experimental results. Finally, how soil density and root diameter affect the anchoring force was analyzed. The results indicate that the maximum anchoring force increases linearly with increasing root diameter, but nonlinearly with increasing soil density until reaching a fixed value. These results show that the root soil pull-out model has significant practical value in slope protection. |
| 电子版国际标准刊号 | 1993-0321 |
| WOS关键词 | BOND-SLIP ; TREE ROOTS ; PULLOUT ; REINFORCEMENT ; ANCHORAGE ; MODEL ; RESISTANCE ; STRENGTH ; FIBERS |
| 资助项目 | National Natural Science Foundation of China[41790432] ; NSFC-ICIMOD joint project[41761144077] ; Belt & Road international cooperation team project of CAS |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000588716900014 |
| 出版者 | SCIENCE PRESS |
| 资助机构 | National Natural Science Foundation of China ; NSFC-ICIMOD joint project ; Belt & Road international cooperation team project of CAS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50644]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.11 |
| 推荐引用方式 GB/T 7714 | Su, Li-jun,Hu, Bing-li,Xie, Qi-jun,et al. Experimental and theoretical study of mechanical properties of root-soil interface for slope protection[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(11):2784-2795. |
| APA | Su, Li-jun,Hu, Bing-li,Xie, Qi-jun,Yu, Fang-wei,&Zhang, Chong-lei.(2020).Experimental and theoretical study of mechanical properties of root-soil interface for slope protection.JOURNAL OF MOUNTAIN SCIENCE,17(11),2784-2795. |
| MLA | Su, Li-jun,et al."Experimental and theoretical study of mechanical properties of root-soil interface for slope protection".JOURNAL OF MOUNTAIN SCIENCE 17.11(2020):2784-2795. |
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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