Post-Cyclic Mechanical Behaviors of Undisturbed Soft Clay with Different Degrees of Reconsolidation
文献类型：期刊论文
| 作者 | Lu, Yuan1,2; Chen, Jian1,2,3,4,5,6; Huang, Juehao1,2,3,5,6; Feng, Libo7; Yu, Song8; Li, Jianbin9; Ma, Chao1 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 11期号:16页码:19 |
| 关键词 | undisturbed soft clay cyclic loading cyclic stress ratio degree of reconsolidation post-cyclic shear characteristics microstructure |
| DOI | 10.3390/app11167612 |
| 英文摘要 | Soft soil is often subjected to cyclic loading such as that imposed during storms, under traffic, or in an earthquake. Furthermore, the cyclic-loading-induced excess pore water pressure can be partially dissipated after cyclic loading. Thus, different reconsolidation processes should be considered. A series of static and dynamic triaxial tests were conducted on undisturbed soft soil to determine the post-cyclic mechanical behavior thereof, such as the variation of undrained shear strength, the development of excess pore water pressure, and the evolution of effective stress path. The effects of consolidated confining pressure, cyclic stress ratio, and degree of reconsolidation were analyzed. Results show that the trend of all stress-strain curves is similar under different conditions. The effect of the degree of reconsolidation is such that, with increasing the degree of reconsolidation, the shear strength is enhanced. Meanwhile, compared with undrained shear strength without cyclic loading, the shear strength after cyclic loading with full reconsolidation is increased. These factors also have a significant effect on the undrained shear strength: the greater both the confining pressure and cyclic stress ratio are, the higher the undrained shear strength. A positive excess pore water pressure is always observed during post-cyclic shearing process, irrespective of different factors. The S-shaped effective stress paths under different test conditions are observed and cross the critical state line. The microstructures of undisturbed soil and post-cyclic specimens with different degrees of reconsolidation were quantitatively investigated. Besides that, the degree of influence of different factors on the post-cyclic undrained strength was analyzed. Based on the test results, the undrained shear strength with cyclic load-history was well predicted by existing models. |
| 资助项目 | National Natural Science Foundation of China[52079135] ; National Natural Science Foundation of China[51909259] ; National Natural Science Foundation of China[52008122] ; International Partnership Program of the Chinese Academy of Sciences[131551KYSB20180042] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000688708500001 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/27849]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Huang, Juehao |
| 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, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, Hubei Key Lab Geoenvironm Engn, Wuhan 430071, Peoples R China 4.China Pakistan Joint Res Ctr Earth Sci, Islamabad 45320, Pakistan 5.Ningbo Univ Technol, State Key Lab Geomech & Geotech Engn, Soft Soil Res Ctr, Ningbo 315211, Peoples R China 6.Natl Local Joint Engn Res Ctr Underwater Tunnelin, Wuhan 430063, Peoples R China 7.Jinhua Jinhua Yiwu Dongyang Rail Transit Co Ltd, Jinhua 321000, Zhejiang, Peoples R China 8.China Railway Major Bridge Reconnaissance & Desig, Wuhan 430050, Peoples R China 9.Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yuan,Chen, Jian,Huang, Juehao,et al. Post-Cyclic Mechanical Behaviors of Undisturbed Soft Clay with Different Degrees of Reconsolidation[J]. APPLIED SCIENCES-BASEL,2021,11(16):19. |
| APA | Lu, Yuan.,Chen, Jian.,Huang, Juehao.,Feng, Libo.,Yu, Song.,...&Ma, Chao.(2021).Post-Cyclic Mechanical Behaviors of Undisturbed Soft Clay with Different Degrees of Reconsolidation.APPLIED SCIENCES-BASEL,11(16),19. |
| MLA | Lu, Yuan,et al."Post-Cyclic Mechanical Behaviors of Undisturbed Soft Clay with Different Degrees of Reconsolidation".APPLIED SCIENCES-BASEL 11.16(2021):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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