岩土工程学报2017，Vol.39Issue(z1)：48-52,5.DOI:10.11779/CJGE2017S1010
细粒含量及固结应力对饱和砂土动剪切模量和阻尼比影响试验研究
Experimental study on influences of fines content and consolidation stress on shear modulus and damping ratio of saturated sand
摘要
Abstract
The dynamic shear modulus and damping ratio are the two main parameters for describing the dynamic characteristics of soil. The tests on the saturated sand under isotropically consolidation by TSH-100 resonant column apparatus made by GCTS Instruments Ltd. from the USA are performed, and the effects of fines contents (FC) and consolidation stress on the dynamic shear modulus and damping ratio are analyzed. The results show that under different consolidation stress levels, the effects of fines contents on the dynamic shear modulus and damping ratio of sand are the same. When 0≤FC≤10%, the dynamic shear modulus of sand decreases and the damping ratio increases with the increase of fines content. When 10%<FC≤40%, the dynamic shear modulus of sand increases and the damping ratio decreases with the increase of fines content. Under the same fines content, the dynamic shear modulus of sand increases and the damping ratio decreases with the increase of consolidation stress.关键词
GCTS共振柱/饱和砂土/细粒含量/固结应力/动剪切模量/阻尼比Key words
GCTS resonant column/saturated sand/fines content/consolidation stress/dynamic shear modulus/damping ratio分类
建筑与水利引用本文复制引用
毕昇,陈国兴,周正龙,吴琪..细粒含量及固结应力对饱和砂土动剪切模量和阻尼比影响试验研究[J].岩土工程学报,2017,39(z1):48-52,5.基金项目
国家自然科学基金项目(41172258,51438004) （41172258,51438004）
国家科技重大专项(2013Zx06002001-09) （2013Zx06002001-09）
