Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade
文献类型：期刊论文
| 作者 | Duan Jun-yi1; Yang Guo-lin1; Hu Min1; Lei Xiao-qin2 ; Lin Yu-liang1
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| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
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| 出版日期 | 2020-04-01 |
| 卷号 | 17期号:4页码:1001-1012 |
| ISSN号 | 1672-6316 |
| 关键词 | prokaryotic communities climate change water table dry-rewetting event 16S rRNA gene sequencing |
| DOI | 10.1007/s11629-019-5773-4 |
| 通讯作者 | Duan Jun-yi(junyidjy@163.com) ; Yang Guo-lin(yangguolin6301@163.com) |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | To study the mechanical and deformation characteristics of ballastless track subgrade filled with micro-expansion fillers in a water-immersed environment, a physical model of ballastless track subgrade was constructed on a 1:2 scale with expansive andesite fillers. A water immersion test was carried out to model the soaking of the expansive soil foundation caused by rising groundwater. The swelling behaviors of the foundation and their influences upon the mechanics and deformations of the subgrade were analyzed. The lateral swelling pressure of the foundation and the heave of the subgrade obviously increased due to the water immersion, and the values were closely related to the overlying load and lateral restraint. The heave deformation of the double-line ballastless track subgrade showed significant nonuniformity along the lateral direction, causing the track slab to incline with a maximum inclination angle of 1.55x10-3 deg. The heave of the foundation caused a heave in subgrade, but this transferred heave was significantly attenuated. The attenuation rate of the heave at the midline of the track slab was up to 13.38%. The attenuation characteristic can be fully utilized for the anti-heave deformation measures of railway subgrade in expansive soil areas. |
| 电子版国际标准刊号 | 1993-0321 |
| WOS关键词 | SPEED RAILWAY SUBGRADE ; GRANULAR PILE-ANCHORS ; EXPANSIVE SOIL ; COMPACTED BENTONITES ; DYNAMIC-BEHAVIOR ; HEAVE ; FIELD ; LAYER |
| 资助项目 | National Natural Science Foundation of China[51778641] ; National Natural Science Foundation of China[51878667] ; National Natural Science Foundation of China[51678571] ; Fundamental Research Funds for the Central Universities of Central South University[2020zzts401] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000525174500017 |
| 资助机构 | National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of Central South University |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34278]  |
| 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 | Duan Jun-yi; Yang Guo-lin |
| 作者单位 | 1.Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China; 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China |
| 推荐引用方式 GB/T 7714 | Duan Jun-yi,Yang Guo-lin,Hu Min,et al. Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(4):1001-1012. |
| APA | Duan Jun-yi,Yang Guo-lin,Hu Min,Lei Xiao-qin,&Lin Yu-liang.(2020).Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade.JOURNAL OF MOUNTAIN SCIENCE,17(4),1001-1012. |
| MLA | Duan Jun-yi,et al."Swelling characteristics of andesite foundation induced by water immersion and their influence on ballastless track subgrade".JOURNAL OF MOUNTAIN SCIENCE 17.4(2020):1001-1012. |
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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