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| 粉细砂的真三轴试验与强度特性 | |
| 引用本文： | 扈萍,黄茂松,马少坤,吕玺琳.粉细砂的真三轴试验与强度特性[J].岩土力学,2011,32(2):465-470. |
| 作者姓名： | 扈萍 黄茂松 马少坤 吕玺琳 |
| 作者单位： | 1. 济南大学,土木建筑学院,济南,250022 2. 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 3. 广西大学,资源与环境学院,南宁,530004 |
| 基金项目： | 济南大学博士基金，国家自然科学基金 |
| 摘 要： | 采用柔性真三轴仪对上海粉细砂进行了一系列不同中主应力系数条件下的真三轴试验,针对中主应力对粉细砂强度特性的影响进行了系统分析。基于真三轴试验结果对Mohr-Coulomb强度准则的形状函数进行了改进,并采用试验结果对强度准则进行验证。结果表明,建立在真三轴试验基础上的强度准则能更准确地反映砂土三维应力状态下的强度特性。 |
| 关 键 词： | 粉细砂 真三轴试验 中主应力 三维 强度 |
| 收稿时间： | 2009-09-22 |
True triaxial tests and strength characteristics of silty sand |
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| HU Ping,HUANG Mao-song,MA Shao-kun,L Xi-lin.True triaxial tests and strength characteristics of silty sand[J].Rock and Soil Mechanics,2011,32(2):465-470. | |
| Authors: | HU Ping HUANG Mao-song MA Shao-kun L Xi-lin |
| Institution: | 1. Scholl of Civil Engineering, University of Jinan, Jinan 250022, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 4. College of Resources and Environment, Guangxi University, Nanning 530004, China |
| Abstract: | In order to investigate the effect of intermediate principal stress on strength of sands, a series of true triaxial compression tests of Shanghai silty sand under different intermediate principal stress coefficients are performed on flexible true triaxial apparatus. Then the Lode angle dependent shape function of Mohr-Coulomb's strength criterion is modified based on true triaxial tests results; and the true triaxial test results of Shanghai silty sands are simulated. The results show that the strength criterion based on true triaxial tests can describe the strength characteristics of sand in true 3D state preferably. |
| Keywords: | silty sand true triaxial tests intermediate principal stress 3D strength |
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