Effects of Heat Softening on Initiation of Landslides
文献类型：期刊论文
| 作者 | Xiong CX; Lu XB(鲁晓兵) ; Huang WD; Wang, CH
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2014-11 |
| 卷号 | 11期号:6页码:1571-1578 |
| 通讯作者邮箱 | xiongchx@aliyun.com |
| 关键词 | Landslide Thermo-effect Slide surface Initiation |
| ISSN号 | 1672-6316 |
| 产权排序 | [Xiong Chuan-xiang] Fuzhou Univ, Sch Environm & Resources, Fuzhou 350108, Peoples R China; [Xiong Chuan-xiang] Fujian Prov Key Lab Remote Sensing Soil Eros & Di, Fuzhou 350108, Peoples R China; [Lu Xiao-bing] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; [Huang Wei-da] Fujian Acad Bldg Res, Fuzhou 350025, Peoples R China; [Wang Cheng-hua] Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China |
| 通讯作者 | Xiong, CX (reprint author), Fuzhou Univ, Sch Environm & Resources, Fuzhou 350108, Peoples R China. |
| 合作状况 | 国内 |
| 中文摘要 | Effects of heat softening on the initiation of slide surface (shear banding) in clayey slopes during fast deformation were discussed. Controlling equations considering heat, pore pressure and mechanical movement were presented. By perturbation method, the instability condition of localized zone (i.e. criterion for initiation of shear banding) for thermal related soils, such as clayey slope, was obtained. It is shown that slide surface initiates once the thermal-softening effects overcome the strain-hardening effects whether it is adiabatic or not. Without strain hardening effects, strain rate hardening obviously plays a role in initiation of shear band. During initiating process, heat is trapped inside the shear band, which leads rapidly to a pore pressure increase and fast loss of strength. The localized shear strain is concentrated in a narrow zone with a width of several centimeters at most and increases fast. This zone forms the sliding surface. Temperature can increase more than 2 degrees C, pore pressure can increase 160% in about 0.1s inside this zone. These changes cause the fast decrease in friction-coefficient by about 36% over the initial value. That is how shear band initiated and developed in clayey slopes. |
| 学科主题 | Environmental Sciences & Ecology |
| 分类号 | Q4 |
| 收录类别 | SCI |
| 资助信息 | This study was funded by the National Natural Science Foundation of China (Grant No. 11272314; No. 51239010), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20133514110004), and the Research Project of Chinese Ministry of Transport (Grant No. 201331849A130). |
| 原文出处 | http://dx.doi.org/10.1007/s11629-013-2769-3 |
| 语种 | 英语 |
| WOS记录号 | WOS:000345621100019 |
| 公开日期 | 2015-01-04 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49444]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 推荐引用方式 GB/T 7714 | Xiong CX,Lu XB,Huang WD,et al. Effects of Heat Softening on Initiation of Landslides[J]. JOURNAL OF MOUNTAIN SCIENCE,2014,11(6):1571-1578. |
| APA | Xiong CX,鲁晓兵,Huang WD,&Wang, CH.(2014).Effects of Heat Softening on Initiation of Landslides.JOURNAL OF MOUNTAIN SCIENCE,11(6),1571-1578. |
| MLA | Xiong CX,et al."Effects of Heat Softening on Initiation of Landslides".JOURNAL OF MOUNTAIN SCIENCE 11.6(2014):1571-1578. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。