岩土工程学报2017，Vol.39Issue(z1)：64-68,5.DOI:10.11779/CJGE2017S1013
取土器贯入扰动变形规律透明土试验研究
Tests on transparent soil for soil disturbance deformation induced by sampler penetration
摘要
Abstract
The soil disturbance deformation induced by sampler penetration has a significant influence on the physical and mechanical properities of soil in soil investigation engineering. A series of small-scale model tests with different sampler diameters and penetration rates are conducted to investigate the disturbance deformation characteristics of soil and the influence factors during sampler penetration by using transparent soils and PIV (particle image velocimetry) technique. The test results show that the disturbance deformation of soil increases with the depth of sampler penetration, and the disturbance deformation of soil in sampler is mainly upheaval, and the maximum upheaval deformation occurs at the depth about 20 mm. Increasing the sampler diameter can reduce the disturbance deformation of soil at sampler centerline effectively, but the reduced magnitude of deformation decreases with the sampler diameter. The sampler penetration rate has no effect on the disturbance deformation of non-structured soil.关键词
取土器/扰动变形/透明土/PIV技术/贯入速率Key words
soil sampler/disturbance deformation/transparent soil/PIV technique/penetration rate分类
建筑与水利引用本文复制引用
罗如平,吴跃东,刘坚,杨冬..取土器贯入扰动变形规律透明土试验研究[J].岩土工程学报,2017,39(z1):64-68,5.基金项目
国家自然科学基金项目(51279049) （51279049）
中央高校基本科研业务费项目(2015B025914) （2015B025914）
