| 残积土特殊应力路径的三轴试验研究 |
| |
| 引用本文： | 方祥位,陈正汉,申春妮,孙树国,王权民.残积土特殊应力路径的三轴试验研究[J].岩土力学,2005,26(6):932-936. |
| |
| 作者姓名： | 方祥位 陈正汉 申春妮 孙树国 王权民 |
| |
| 作者单位： | 后勤工程学院 军事建筑工程系 重庆 400041 |
| |
| 摘 要： | 利用先进的GDS应力路径三轴仪，探讨了花岗岩残积土在特殊应力路径下的三轴试验特性。做了2种应力路径下的三轴排水剪切试验：平均应力等于常数、偏应力变化的剪切试验以及偏应力等于常数、平均应力变化的剪切试验。试验结果表明：平均应力等于常数的试验其偏应力-轴应变曲线为双曲线型，偏应力等于常数的试验其平均应力-轴应变曲线为幂函数型；发现花岗岩残积土具有剪缩特性，回弹体积模量随偏应力增大而显著提高。
|
| 关 键 词： | 残积土 应力路径 三轴剪切 平均应力 偏应力 |
| 文章编号： | 1000-7598-(2005)06-0932-05 |
| 收稿时间： | 2004-05-25 |
| 修稿时间： | 2004年5月25日 |
Test study on residual soil under special stress paths |
| |
| FANG Xiang-wei,CHEN Zheng-Han,Shen Chun-ni,SUN Shu-guo,WANG Quan-min.Test study on residual soil under special stress paths[J].Rock and Soil Mechanics,2005,26(6):932-936. |
| |
| Authors: | FANG Xiang-wei CHEN Zheng-Han Shen Chun-ni SUN Shu-guo WANG Quan-min |
| |
| Institution: | Department of Architecture and Civil Engineering, Logistical Engineering University, Chongqing 400041,China |
| |
| Abstract: | Some mechanical properties of granite residual soil were studied under special stress paths using advanced GDS stress path triaxial apparatus. The triaxial drained shear tests were conducted under two types of stress paths. The first set of tests was that mean stress p was constant while deviator stress q changed; the second set of tests was that q was constant while p changed. The test results show that the deviator stress-axial strain curve is hyperbola for the first set of tests; however, the mean stress-axial strain curve is power function for the second set of tests. The granite residual soil has shear shrinkage property. The rebound bulk modulus increases notably with deviator stress. |
| |
| Keywords: | residual soil stress path triaxial shear mean stress deviator stress |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
