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采用改进的直剪蠕变仪,在相同试验条件下分别测试了不同粒径和含水率的砂试样。试验结果表明:砂性土也具有一定的蠕变性质,其变形随时间的增加而增加,经过一段时间后才能达到稳定,且随砂土颗粒粒径的不同而不同,其中天然砂、粗砂的蠕变现象较其它颗粒的砂明显,同时含水率对砂土的蠕变特性影响不大。试验结果有助于进一步认识砂性土蠕变的特性及其影响因素。
An improved direct shear creep tester was used to test sand samples with different particle sizes and moisture contents under the same test conditions. The results show that the sandy soil also has a certain creep property. The deformation of the sandy soil increases with the increase of time. After a period of time, the deformation of the sandy soil can be stabilized and varies with the particle size of the sand. The natural sand, coarse sand Creep phenomenon than other particles of sand significantly, while the moisture content of creep characteristics of sand has little effect. The test results help to further understand the characteristics of creep of sandy soil and its influencing factors.