Effects of Three-Dimensional Cyclic Stresses on Permanent Deformation of Natural Undisturbed Clay
文献类型：期刊论文
| 作者 | Liu, Bingheng; Kong, Lingwei; Xu, Guofang; Sun, Zhiliang |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2022-12-01 |
| 卷号 | 22期号:12 |
| 关键词 | Natural undisturbed clay Permanent deformation Three-dimensional cyclic stresses True triaxial tests Coefficient of intermediate principal stress Stress path |
| ISSN号 | 1532-3641 |
| 英文摘要 | The cyclic stresses in subgrade soil induced by traffic loads are three-dimensional-cyclic major, intermediate, and minor principal stresses. To investigate the permanent deformation of natural undisturbed clay under three-dimensional cyclic stresses, a series of undrained true triaxial tests was carried out, using a true triaxial apparatus that could apply cyclic major, intermediate, and minor principal stresses simultaneously. The emphasis was on the effects of the cyclic stress ratio (CSR), the coefficient of cyclic intermediate principal stress (b(cyc)), and the reciprocal slope of the stress path in the p-q plane (xi) on the permanent deformation characteristics. The test results show that b(cyc) reduces the accumulation of permanent major principal strain (epsilon(p)(1)) remarkably. For given values of the number of loading cycles (N), CSR, and xi, epsilon(p)(1) decreases approximately linearly with increasing b(cyc). xi also limits the accumulation of epsilon(p)(1). Furthermore, the ratio of epsilon(p)(1) for a given value of xi to epsilon(p)(1) for xi = 1 decreases from 1.095 to 0.887 when xi increases from 0.67 to 1.5, and the relationship between epsilon(p)(1)(xi)/epsilon(p)(1)(xi=1) and xi is described by a linear formula. A critical value of b(cyc) is observed at which epsilon(p)(2) changes from tension to compression, that is, epsilon(p)(2) is zero at the critical value of b(cyc). The difference among the critical values of b(cyc) in all the tests is relatively small, and the mean critical value of b(cyc) is 0.328. Moreover, an empirical formula is established for predicting the permanent major principal strain under three-dimensional cyclic stresses. (C) 2022 American Society of Civil Engineers. |
| 学科主题 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000867614400010 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34796]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Liu, Bingheng,Kong, Lingwei,Xu, Guofang,et al. Effects of Three-Dimensional Cyclic Stresses on Permanent Deformation of Natural Undisturbed Clay[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2022,22(12). |
| APA | Liu, Bingheng,Kong, Lingwei,Xu, Guofang,&Sun, Zhiliang.(2022).Effects of Three-Dimensional Cyclic Stresses on Permanent Deformation of Natural Undisturbed Clay.INTERNATIONAL JOURNAL OF GEOMECHANICS,22(12). |
| MLA | Liu, Bingheng,et al."Effects of Three-Dimensional Cyclic Stresses on Permanent Deformation of Natural Undisturbed Clay".INTERNATIONAL JOURNAL OF GEOMECHANICS 22.12(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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