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| 多种应力路径条件下上海粉细砂的室内试验 | |
| 引用本文： | 彭芳乐,白小宇,雷亮.多种应力路径条件下上海粉细砂的室内试验[J].同济大学学报(自然科学版),2011,39(12):1767-1772. |
| 作者姓名： | 彭芳乐 白小宇 雷亮 |
| 作者单位： | 1. 同济大学地下建筑与工程系,上海 200092;同济大学岩土及地下工程教育部重点实验室,上海 200092 2. 同济大学地下建筑与工程系,上海 200092;深圳市地铁集团有限公司,广东 深圳 518026 3. 同济大学地下建筑与工程系,上海,200092 |
| 基金项目： | 国家自然科学基金项目（50679056，40972176）,上海市曙光计划（05SG25） |
| 摘 要： | 通过多组排水条件下不同应力路径的平面应变压缩试验对上海粉细砂的变形强度特性进行了研究,试验结果表明:上海粉细砂的剪应变、体应变、塑性剪应变、塑性体应变、塑性功受应力路径的影响都比较明显,不能作为合适的硬化参数.根据多应力路径平面应变压缩试验结果提出了与应力路径不相关的修正塑性功参量及上海粉细砂本构模型的剪切硬化函数. |
| 关 键 词： | 上海粉细砂 平面应变压缩试验 应力路径 硬化参数 硬化函数 |
| 收稿时间： | 9/2/2010 12:40:56 AM |
| 修稿时间： | 2010/11/14 0:00:00 |
Laboratory Experimental Study on Shanghai Fine Sand Along Different Stress Paths |
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| PENG Fangle,BAI Xiaoyu and LEI Liang.Laboratory Experimental Study on Shanghai Fine Sand Along Different Stress Paths[J].Journal of Tongji University(Natural Science),2011,39(12):1767-1772. | |
| Authors: | PENG Fangle BAI Xiaoyu and LEI Liang |
| Institution: | Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China; China Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education,Tongji University,Shanghai 200092,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China;henzhen Metro Co.Ltd.,Shenzhen 518026,China;Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China; |
| Abstract: | The deformation and strength behaviour of Shanghai fine sand is studied through a series of plane strain compression(PSC) tests with different stress paths.The result from the PSC tests shows that the shear strain,volumetric strain,plastic shear strain,plastic volumetric strain and plastic work are all influenced by stress path for Shanghai fine sand.Therefore,none of the above quantities can be used as appropriate hardening parameter for Shanghai fine sand.Based on the experimental results from the PSC tes... |
| Keywords: | Shanghai fine sand plane strain compression tests stress-path hardening parameter hardening function |
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