Characteristics and predictions of accumulative deformation of structured soft soil under long-term cyclic loading
文献类型：期刊论文
| 作者 | Liu, Weizheng1,4; Tan, Jiming1; Lv, Weihua3; Chen, Cheng2; Qu, Shuai1 |
| 刊名 | SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 189页码:19 |
| 关键词 | Soft soil Accumulative deformation Soil structure Stress sensitivity Prediction model Simulation |
| ISSN号 | 0267-7261 |
| DOI | 10.1016/j.soildyn.2024.109088 |
| 英文摘要 | To address the long-term settlement of embankments over structured soft soil during the in-service stage, artificial structured soils with different interparticle bonding strengths and initial void ratios were prepared, and repeated triaxial loading tests were conducted to investigate the effects of bonding strength, initial void ratio, stress amplitude and cycle number on the accumulative deformation characteristics. The results show that the relationship between the accumulative plastic strain and cycle number can be classified into stable, critical and destructive types, and an empirical relationship between the stress sensitivity and dynamic stress ratio is established. Furthermore, two different empirical models for accumulative plastic strain are presented that incorporate soil structure. Reasonable agreement between the model predictions and the experimental results for different natural soft soils demonstrate that the proposed models can accurately capture the accumulative deformation behaviour of structured soils. In addition, considering the accumulated plastic deformation of soil subjected to cyclic loading as static creep, a simplified method for calculating three-dimensional cyclic accumulative deformation is proposed by implementing the proposed model in a finite-element simulation utilizing an implicit stress integration algorithm. Finally, the effects of the dynamic stress level and structural strength on the accumulative deformation are analyzed. This has important implications in controlling the long-term settlement of embankment in soft soil area. |
| 资助项目 | National Natural Science Foundation of China[52078500] ; Natural Science Foundation of Hunan Province[2024JJ5429] ; Science and Technology Research and Development Program Project of China Railway Engineering Group Limited[2021-Special-08] ; Science and Technology Research and Development Project of China State Railway Group Co., Ltd.[L2023G002] ; Open Foundation of National Engineering Research Center of High-Speed Railway Construction Technology[HSR202008] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001362991500001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43243]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Tan, Jiming |
| 作者单位 | 1.Cent South Univ, Sch Civil Engn, Changsha 410075, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 3.Nanjing Forestry Univ, Sch Civil Engn, Nanjing 210037, Peoples R China 4.Natl Engn Res Ctr High Speed Railway Construct Tec, Changsha 410075, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Weizheng,Tan, Jiming,Lv, Weihua,et al. Characteristics and predictions of accumulative deformation of structured soft soil under long-term cyclic loading[J]. SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,2025,189:19. |
| APA | Liu, Weizheng,Tan, Jiming,Lv, Weihua,Chen, Cheng,&Qu, Shuai.(2025).Characteristics and predictions of accumulative deformation of structured soft soil under long-term cyclic loading.SOIL DYNAMICS AND EARTHQUAKE ENGINEERING,189,19. |
| MLA | Liu, Weizheng,et al."Characteristics and predictions of accumulative deformation of structured soft soil under long-term cyclic loading".SOIL DYNAMICS AND EARTHQUAKE ENGINEERING 189(2025):19. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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