A novel relationship between elastic modulus and void ratio associated with principal stress for coral calcareous sand
文献类型：期刊论文
| 作者 | Gao, Ran1,2; Ye, Jianhong1,2 |
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 16期号:3页码:1033-1048 |
| 关键词 | Coral calcareous sand (CCS) Elastic shear modulus Elastic bulk modulus Triaxial test Estimation formulation Ye formulation |
| ISSN号 | 1674-7755 |
| DOI | 10.1016/j.jrmge.2023.07.011 |
| 英文摘要 | Elastic moduli, e.g. shear modulus G and bulk modulus K, are important parameters of geotechnical materials, which are not only the indices for the evaluation of the deformation ability of soils but also the important basic parameters for the development of the constitutive models of geotechnical materials. In this study, a series of triaxial loading-unloading-reloading shear tests and isotropic loading-unloadingreloading tests are conducted to study several typical mechanical properties of coral calcareous sand (CCS), and the void ratio evolution during loading, unloading and reloading. The test results show that the stress-strain curves during multiple unloading processes are almost parallel, and their slopes are much greater than the deformation modulus at the initial stage of loading. The relationship between the confining pressure and the volumetric strain can be defined approximately by a hyperbolic equation under the condition of monotonic loading of confining pressure. Under the condition of confining pressure unloading, the evolution of void ratio is linear in the e-lnp' plane, and these lines are a series of almost parallel lines if there are multiple processes of unloading. Based on the experimental results, it is found that the modified Hardin formulae for the elastic modulus estimation have a significant deviation from the tested values for CCS. Based on the experimental results, it is proposed that the elastic modulus of soils should be determined by the intersection line of two spatial surfaces in the G/K-e-p'/pa space (pa: atmosphere pressure). "Ye formulation" is further proposed for the estimation of the elastic modulus of CCS. This new estimation formulation for soil elastic modulus would provide a new method to accurately describe the mechanical behavior of granular soils. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/). |
| 资助项目 | National Key Research and Development Program of China[2022YFC3102402] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001234767900001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41441]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Ye, Jianhong |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Ran,Ye, Jianhong. A novel relationship between elastic modulus and void ratio associated with principal stress for coral calcareous sand[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(3):1033-1048. |
| APA | Gao, Ran,&Ye, Jianhong.(2024).A novel relationship between elastic modulus and void ratio associated with principal stress for coral calcareous sand.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(3),1033-1048. |
| MLA | Gao, Ran,et al."A novel relationship between elastic modulus and void ratio associated with principal stress for coral calcareous sand".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.3(2024):1033-1048. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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