Shear characteristics of calcareous gravelly sand considering particle breakage
文献类型：期刊论文
| 作者 | Shen, Jian-Hua3; Wang, Xing1,2; Cui, Jie1,2; Wang, Xin-Zhi3; Zhu, Chang-Qi3 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 81期号:3页码:29 |
| 关键词 | Calcareous gravelly sand Strain-softening characteristics Dilatancy characteristics Friction angle Secant modulus Particle breakage |
| ISSN号 | 1435-9529 |
| DOI | 10.1007/s10064-022-02603-4 |
| 英文摘要 | Calcareous sand is a special geomaterial susceptible to breakage. In this study, calcareous gravelly sand (CGS) was subjected to multiple consolidated-drained triaxial shear tests under different relative densities (Dr) and effective confining pressures (sigma'(3)). The purpose was to investigate the effects of particle breakage on the shear characteristics of calcareous sand. According to the results, the strain-softening and dilatancy characteristics of CGS gradually weakened with increasing sigma'(3) and decreasing Dr. Within sigma'(3) <= 400 kPa, the peak-state friction angle (phi(p)) of calcareous sand collected from the island-reefs in the South China Sea had a range of 37.8-62.9 degrees. Moreover, fp decreased with increasing sigma'(3) and decreasing Dr. A physical model was built to predict the secant modulus (E-50) of CGS based on its Dr and sigma'(3). Particles 1-2 mm in size had the largest breakage extent, and mainly broke into particles of 0.5-1 mm and 0.075-0.25 mm. The applicability of inverse proportional function for describing the relationship between plastic work and relative breakage ratio for CGS was validated. Neither Dr nor sigma'(3) greatly affected their relationship. Increasing particle breakage weakened the strain- softening and dilatancy characteristics of CGS and reduced its phi(p) but enhanced its deformation resistance. The findings of this study provide a theoretical basis for infrastructure construction on the island-reefs in the South China Sea. |
| 资助项目 | National Natural Science Foundation of China[41772336] ; National Natural Science Foundation of China[42177151] ; National Natural Science Foundation of China[41772337] ; China Postdoctoral Science Foundation[2020M682653] ; China Postdoctoral Science Foundation[2021T140142] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515110663] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000763417400001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34588]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Xing |
| 作者单位 | 1.Guangzhou Univ, Earthquake Engn Res & Test Ctr, Guangzhou 510405, Peoples R China 2.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Jian-Hua,Wang, Xing,Cui, Jie,et al. Shear characteristics of calcareous gravelly sand considering particle breakage[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(3):29. |
| APA | Shen, Jian-Hua,Wang, Xing,Cui, Jie,Wang, Xin-Zhi,&Zhu, Chang-Qi.(2022).Shear characteristics of calcareous gravelly sand considering particle breakage.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(3),29. |
| MLA | Shen, Jian-Hua,et al."Shear characteristics of calcareous gravelly sand considering particle breakage".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.3(2022):29. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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