An experimental investigation of the mechanical behavior and a hyperplastic constitutive model of frozen loess (SCI)
文献类型：期刊论文
| 作者 | Lai Y. M. ; Xu X. T. ; Yu W. B. ; Qi J. L. |
| 刊名 | International Journal of Engineering Science
 |
| 出版日期 | 2014 |
| 卷号 | 84期号:29-53 |
| 英文摘要 | For the engineering construction in cold regions, it is essential to understand the mechanical properties of frozen soil. In order to investigate the mechanical characteristics of frozen loess, three kinds of laboratory tests were carried out at -6 degrees C. These included constant-confining pressure triaxial compression tests, isotropic compression tests, and constant-slope stress path tests. The test results show that the direction of the plastic strain increment is influenced by stress path. The influence of the mechanism of the confining pressures on the strength and deformation of frozen loess is investigated in detail. An analytical method to determine pressure crushing and melting of the ice in frozen soil is proposed. In order to apply the hyperplasticity theory to modeling constitutive behavior of frozen soil, a new systematical approach to derive the yield criterion and flow rule from dissipation function is proposed based on the properties of homogenous function. From the mechanical characteristics of frozen loess, Gibbs free energy function and dissipation function of frozen loess are established by applying the hyperplasticity theory. An elasto-plastic incremental constitutive model for frozen loess is derived from the two thermodynamic functions and a method of determining the corresponding parameters is also given. Simulated results show that the constitutive model, proposed in this paper, describes well the deformation behavior of frozen loess under different stress levels and stress paths. (C) 2014 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.casnw.net/handle/362004/24961]  |
| 专题 | 寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文 |
| 推荐引用方式 GB/T 7714 | Lai Y. M.,Xu X. T.,Yu W. B.,et al. An experimental investigation of the mechanical behavior and a hyperplastic constitutive model of frozen loess (SCI)[J]. International Journal of Engineering Science,2014,84(29-53). |
| APA | Lai Y. M.,Xu X. T.,Yu W. B.,&Qi J. L..(2014).An experimental investigation of the mechanical behavior and a hyperplastic constitutive model of frozen loess (SCI).International Journal of Engineering Science,84(29-53). |
| MLA | Lai Y. M.,et al."An experimental investigation of the mechanical behavior and a hyperplastic constitutive model of frozen loess (SCI)".International Journal of Engineering Science 84.29-53(2014). |
入库方式： OAI收割
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。