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胶凝砂砾石料等向加卸载试验研究
发表时间：2015-01-31 浏览量：2075 下载量：774
| 全部作者： | 蔡新，杨杰，郭兴文 |
| 作者单位： | 河海大学水利水电学院，水文水资源与水利工程科学国家重点实验室；河海大学力学与材料学院 |
| 摘 要： | 为研究胶凝砂砾石料等向加卸载过程中的应力、变形特性，进行不同胶凝掺量（60，80 kg/m3）的胶凝砂砾石料等向加卸载试验，结果表明：胶凝砂砾石料等向加卸载曲线出现滞回圈，且随着应力增加，滞回圈变大，滞回圈形状相似。基于试验结果，重点分析加卸载过程中胶凝砂砾石料表现出的弹性与非线性特性，为胶凝砂砾石料宏观弹塑性模型的建立提供参考。 |
| 关 键 词： | 水工结构；胶凝砂砾石料；等向加卸载试验；弹塑性模型 |
| Title： | Research on isotropic loading and unloading triaxial tests of cement sand and gravel material |
| Author： | CAI Xin, YANG Jie, GUO Xingwen |
| Organization： | State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, College of Water Conservancy and Hydropower Engineering, Hohai University; College of Mechanics and Materials, Hohai University |
| Abstract： | Aiming to study stress and deformation characteristics in the isotropic loading and unloading process, the isotropic loading and unloading triaxial tests of cement sand and gravel material with different cement contents （60, 80 kg/m3）were carried out. The experimental results showed that the hysteresis loop of cement sand and gravel material was formed in the process of isotropic loading and unloading triaxial tests and becomes larger with increased stress. At the same time, the shape of these hysteresis loops was geometrically similar. According to these results, we focused on the analysis of the elastic and inelastic characteristic in the process of isotropic loading and unloading triaxial tests of cement sand and gravel material, which could contribute to the establishment of the elastic-plastic model of such material. |
| Key words： | hydraulic structures; cement sand and gravel material; isotropic loading and unloading triaxial tests; elastic-plastic model |
| 发表期数： | 2015年1月第2期 |
| 引用格式： | 蔡新，杨杰，郭兴文. 胶凝砂砾石料等向加卸载试验研究[J]. 中国科技论文在线精品论文，2015，8（2）：127-130. |
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