Experimental study of the mechanical behavior of calcareous sand under repeated loading-unloading
文献类型：期刊论文
| 作者 | Wang, Xing2; Cui, Jie2; Zhu, Chang-Qi1; Wu, Yang2; Wang, Xin-Zhi1 |
| 刊名 | BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
 |
| 出版日期 | 2021-02-20 |
| 页码 | 17 |
| ISSN号 | 1435-9529 |
| 关键词 | Calcareous sand Loading mode Deviatoric stress level Effective confining pressure Volume-contraction during unloading Unloading rebound modulus |
| DOI | 10.1007/s10064-021-02119-3 |
| 英文摘要 | Understanding the mechanical behavior of calcareous sand under repeated loading-unloading is important to engineering design for island-reef underground caverns and pile foundation projects. In this study, we conducted conventional consolidated-drained triaxial shear tests on calcareous sand collected from the South China Sea under different effective confining pressures, and then, we performed multiple sets of triaxial repeated loading-unloading tests on calcareous sands with equivalent physical properties under different deviatoric stress levels and effective confining pressures. Based on the results, we conducted an in-depth investigation of the effects of the loading mode and effective confining pressure on the strain softening behavior and shear strength angle of calcareous sand. We studied the variation in the unloading rebound modulus as the effective confining pressure and deviatoric stress level changed, verified the applicability of the Dunkan-Chang model's estimation equation for the unloading rebound modulus to calcareous sand, and established the relationship among the volume contraction during unloading, the effective confining pressure, and the deviatoric stress level. The results of this study provide an important basis for selecting appropriate parameters for island-reef construction engineering. |
| 资助项目 | China Postdoctoral Science Foundation[2020M682653] ; National Natural Science Foundation of China[41877271] ; National Natural Science Foundation of China[51908153] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA13010301] ; Guangzhou City Technology and Science Program[201904010278] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000619745900002 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/25768]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China 2.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xing,Cui, Jie,Zhu, Chang-Qi,et al. Experimental study of the mechanical behavior of calcareous sand under repeated loading-unloading[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2021:17. |
| APA | Wang, Xing,Cui, Jie,Zhu, Chang-Qi,Wu, Yang,&Wang, Xin-Zhi.(2021).Experimental study of the mechanical behavior of calcareous sand under repeated loading-unloading.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,17. |
| MLA | Wang, Xing,et al."Experimental study of the mechanical behavior of calcareous sand under repeated loading-unloading".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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