%0 Journal Article
%T 黏粒和砂粒混合土体的动态液化性能研究<br>Dynamic Liquefaction Properties of Sand-Clay Mixture
%A 唐小微
%A 李涛
%A 马玲
%A 张西文
%J 地震工程学报
%D 2015
%R 10.3969/j.issn.1000-0844.2015.01.0006
%X 现场和实验室观测表明,一定黏粒含量的砂土在一定条件下易发生动力液化的现象,且黏粒含量对砂土抗液化性能的影响较为复杂。通过CKC全数字闭环控制气动式三轴仪试验系统,对黏粒含量为0%、5%和10%的砂土进行动力三轴试验。结果表明,黏粒含量为5%时砂土的抗液化性能最差,并且黏粒含量对于孔压的发展具有较大影响。根据实验数据的分析,对砂土-黏土的混合土的液化和抗液化性能进行机理分析。<br>Field observations and laboratory studies indicate that sand with a certain amount clay can be easily dynamically liquefied under certain conditions and that the amount of clay has a complex impact on the liquefaction resistance of sand.Using a CKC dynamic tri-axial test system, the liquefaction resistance of sand samples with different clay content (0%, 5%, and 10%) was investigated.The results show that the sand sample with 5% clay had the lowest liquefaction resistance;the generation of pore water pressure is obviously effected by the clay content.The liquefaction mechanism of the sand-clay mixture is explained according to the experimental results.
%K 黏粒含量
%K 抗液化
%K 动三轴试验
%K 循环应力比&lt
%K br&gt
%K clay content
%K anti-liquefaction
%K dynamic tri-axial test
%K cyclic stress ratio
%U http://dzgcxb.ijournals.cn/ch/reader/view_abstract.aspx?file_no=20150102&flag=1