摘要
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。
By using the improved direct shear creep apparatus, the creep characteristics of sandy soil with different grain sizes and moisture contents are measured under the same test conditions. The test results show that the sandy soil is of the certain creep characteristics, and its deformation increases with the time and gets the stability after a period of time, which usually varies with the sand particle sizes. The creep phenomenon of the natural sand and coarse sand is more obvious than that of the other particles of sand. The moisture content has little effect on the creep characteristics of the sands. The test results may make a contribution to understand the characteristics and the influence factors of the creep properties of sandy soil.
出处
《工程勘察》
CSCD
2012年第12期8-11,共4页
Geotechnical Investigation & Surveying
关键词
砂土
干砂
湿砂
蠕变特性
sand
dry sand
wet sand
creep property
