Particle Breakage and the Undrained Shear Behavior of Sands
文献类型：期刊论文
| 作者 | Yu, Fangwei1,2
|
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2018-07-01 |
| 卷号 | 18期号:7页码:10 |
| 关键词 | Critical state Particle breakage Phase transformation Silica sand Undrained shear |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/(ASCE)GM.1943-5622.0001203 |
| 英文摘要 | This article presents particle breakage and the undrained shear behavior of sands, with the purpose of interpreting the undrained shear behavior of the precrushed sands by detecting the influence of particle breakage on the basis of the contractive stage, the dilative stage, and the whole shear stage of sand behavior. Particle breakage resulted in impairment of the dilatancy behavior of sand (or intensification of the contractancy behavior of sand) in influencing the stress-strain behavior of sand with intensification of the excess pore-water pressure. Under the same initial void ratio, the critical state was characterized by a reduction of the mean effective stress with increasing particle breakage in the e-logp plane. In view of all critical states on the same particle breakage, particle breakage resulted in the translation and rotation of the critical state line in the e-logp' plane, but the critical state followed and evolved downward along the two-segment critical state line in the q-p' plane with increasing particle breakage. In the q-p' plane, particle breakage had an insignificant influence on the phase transformation line, but the phase transformation state evolved downward along the phase transformation line with increasing particle breakage. During each shear stage (the contractive stage, the dilative stage, or the whole shear stage), particle breakage resulted in movement of the confining-pressure normalized loci of the delta excess pore-water pressure (Delta u) and delta deviator stress (Delta q) (Delta u-q) and the delta excess pore-water pressure (Delta u) and delta mean effective stress (Delta p') (Delta u-Delta p') toward and then along a linear reference line with an increase of the normalized delta excess pore-water pressure and a decrease of the normalized delta deviator stress and the normalized delta mean effective stress with increasing particle breakage. In addition, the divergence from the linear reference line was revealed to decrease and even vanish with increasing confining pressure. (C) 2018 American Society of Civil Engineers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000432256900030 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://ir.imde.ac.cn/handle/131551/21483]  |
| 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 | Yu, Fangwei |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Univ Tokyo, Dept Civil Engn, Tokyo 1138656, Japan |
| 推荐引用方式 GB/T 7714 | Yu, Fangwei. Particle Breakage and the Undrained Shear Behavior of Sands[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2018,18(7):10. |
| APA | Yu, Fangwei.(2018).Particle Breakage and the Undrained Shear Behavior of Sands.INTERNATIONAL JOURNAL OF GEOMECHANICS,18(7),10. |
| MLA | Yu, Fangwei."Particle Breakage and the Undrained Shear Behavior of Sands".INTERNATIONAL JOURNAL OF GEOMECHANICS 18.7(2018):10. |
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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