A review and analysis of granular shear experiments under low effective stress conditions
文献类型：期刊论文
| 作者 | Cheng, XH; Xiao, SZ; Cao, AS; Hou, MY |
| 刊名 | GRANULAR MATTER
 |
| 出版日期 | 2019 |
| 卷号 | 21期号:4页码:- |
| DOI | 10.1007/s10035-019-0955-x |
| 英文摘要 | The constitutive law for granular materials is governed mainly by the intergranular friction, which depends strongly on the gravitational force or effective isotropic stress. Such experiments are mostly performed with relatively high effective isotropic stress. This fact poses serious limitations on the formulation of a materially objective constitutive model based on experiments performed on earth. This paper analyzes the limited experimental data of shear strength and rheology of granular materials, subject to low effective stress conditions obtained in microgravity mu g as well as in 1 g conditions. Results from these experiments show that granular materials may have an extremely high macroscopic peak friction angle and clear nonlinear S-shape non-Bingham fluidity in low effective stress conditions. In this paper, the classical limit equilibrium method is employed, and a rheological constitutive model is used to study experimental data. The limit equilibrium method enables the authors to correlate the bearing capacity of sand foundation with high peak friction angles under varying effective stress conditions. The calibrated analytical solution for the rheological constitutive model under low effective stress conditions, predicts a clear S-shape correlation of the viscous shear stress and shear strain rate. The mutation or inflection point takes place around the in-situ Niigata earthquake shear strain rate. The results of this paper are of great relevance to the assessment of seismic liquefaction hazards of infrastructure on earth. |
| WOS记录号 | WOS:000499950600001 |
| 源URL | [http://119.78.100.186/handle/113462/136012]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | 1.Norwegian Univ Sci & Technol NTNU, Dept Struct Engn, Trondheim, Norway 2.Tsinghua Univ, Dept Civil Engn, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Gansu, Peoples R China 4.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Key Lab Soft Matter Phys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, XH,Xiao, SZ,Cao, AS,et al. A review and analysis of granular shear experiments under low effective stress conditions[J]. GRANULAR MATTER,2019,21(4):-. |
| APA | Cheng, XH,Xiao, SZ,Cao, AS,&Hou, MY.(2019).A review and analysis of granular shear experiments under low effective stress conditions.GRANULAR MATTER,21(4),-. |
| MLA | Cheng, XH,et al."A review and analysis of granular shear experiments under low effective stress conditions".GRANULAR MATTER 21.4(2019):-. |
入库方式： OAI收割
来源：近代物理研究所
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