| 重塑膨胀土的三向膨胀力试验研究 |
| |
| 引用本文： | 谢云,陈正汉,孙树国,李刚,方祥位.重塑膨胀土的三向膨胀力试验研究[J].岩土力学,2007,28(8):1636-1642. |
| |
| 作者姓名： | 谢云 陈正汉 孙树国 李刚 方祥位 |
| |
| 作者单位： | 后勤工程学院，重庆 400041 |
| |
| 摘 要： | 用三向胀缩仪对南阳陶岔重塑膨胀土做了12个三向膨胀力试验，9个湿胀干缩试验和9个控制变形的膨胀力试验。试验结果表明，三向膨胀力不等，水平膨胀力小于竖向膨胀力；湿胀干缩使重塑膨胀土的膨胀力降低，第一次干湿循环后膨胀力减小最多；微小的位移可以使膨胀力大大降低，膨胀力与位移呈对数关系；给出了膨胀力与初始含水率和干密度的关系式。
|
| 关 键 词： | 三向胀缩仪 膨胀土 竖向膨胀力 水平膨胀力 干湿循环 控制变形的膨胀力试验 |
| 文章编号： | 1000-7598-（2007）08-1636-07 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-22 |
Test research on three-dimensional swelling pressure of remolded expansive clay |
| |
| XIE Yun,CHEN Zheng-han,SUN Shu-guo,LI Gang,FANG Xiang-wei.Test research on three-dimensional swelling pressure of remolded expansive clay[J].Rock and Soil Mechanics,2007,28(8):1636-1642. |
| |
| Authors: | XIE Yun CHEN Zheng-han SUN Shu-guo LI Gang FANG Xiang-wei |
| |
| Institution: | Department of Civil Engineering, Logistical Engineering University, Chongqing 400041, China |
| |
| Abstract: | A series of tests were conducted for the unsaturated expansive soil using three-dimensional swell-shrinking device.The three-dimensional swell-shrinking characteristics of remolded expansive soils was studied.According to the test results,three-dimensional swelling pressures are unequal.The lateral swelling pressure is smaller than vertical swelling pressure.The swelling pressure of remolded expansive soil is decreasing with wet-dry cycles.And a small strain could bring obvious decreasing of swelling pressure.The logarithmic relation between lateral pressure and strain is proposed.A formula of vertical swelling pressure with initial water content and dry density is given. |
| |
| Keywords: | three-dimensional swell-shrinking device expansive soil vertical swelling pressure lateral swelling pressure swelling pressure test with deformation controlled |
| 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 |
