An elastoplastic constitutive model for chalk with considering chalk-fluid physicochemical interaction
文献类型：会议论文
| 作者 | Ma, Tiantian1; Wei, Changfu2; Xia, Xiaolong1 |
| 出版日期 | 2016 |
| 会议日期 | OCT 23-26, 2015 |
| 会议地点 | Guilin, PEOPLES R CHINA |
| 页码 | 587-593 |
| 英文摘要 | Chalk is composed of multispecies electrically charged, and the behavior is sensitive to the saturating fluid. There is pronounced physicochemical interaction between the solid particle and fluid, rendering the chalk shows strong chemo-mechanical coupling effect and complex mechanical behavior. An elastoplastic model of chalk saturated with different fluids was developed based on the modified Cam-clay model, which could be effectively used to address the chemo-mechanical behavior. In this model, the generalized osmotic pressure was introduced to represent the microscopic physicochemical stress. Based on the generalized osmotic pressure, the intergranular stress equation is formulated that can effectively account for the physicochemical effect. The generalized osmotic pressure was treated as another hardening variable, and the hardening law of the yielding pressure was given. Compared with the experimental results, the model is capable of addressing the water weakening effect of the chalk. |
| 会议录 | UNSATURATED SOIL MECHANICS-FROM THEORY TO PRACTICE
 |
| 会议录出版者 | CRC PRESS-TAYLOR & FRANCIS GROUP |
| 会议录出版地 | BOCA RATON |
| 语种 | 英语 |
| WOS研究方向 | Engineering |
| WOS记录号 | WOS:000385791100091 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4877]  |
| 专题 | 岩土力学所知识全产出_会议论文 国家重点实验室知识产出_会议论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Guilin Univ Technol, Coll Civil & Architectural Engn |
| 推荐引用方式 GB/T 7714 | Ma, Tiantian,Wei, Changfu,Xia, Xiaolong. An elastoplastic constitutive model for chalk with considering chalk-fluid physicochemical interaction[C]. 见:. Guilin, PEOPLES R CHINA. OCT 23-26, 2015. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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