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结合水对海积软土流变性质的影响
引用本文:何俊,肖树芳.结合水对海积软土流变性质的影响[J].吉林大学学报(地球科学版),2003,33(2):204-207.
作者姓名:何俊  肖树芳
作者单位:吉林大学建设工程学院,吉林,长春,130026
基金项目:国家自然科学基金资助项目 (40 172 0 92 )
摘    要:海积软土的变形和强度性质与时间有明显的相关性,其原因之一是其中含量较多的结合水。土在一定压力下先排出自由水,然后是结合水,结合水膜厚度发生改变。压力改变结合水膜厚度,引起粘滞系数改变。通过剪切增变试验得到了粘滞系数与压力呈线性关系。研究粘滞系数与压力之间关系对修正或建立较为符合实际的本构模型有一定意义。

关 键 词:海积软土  流变性质  变形  强度  时间  结合水  压力  粘滞系数
文章编号:1671-5888(2003)02-0204-04
修稿时间:2002年6月5日

SOME INFLUENCE OF BOND WATER ON RHEOLOGICAL PROPERTIES OF MARINE SOFT SOILS
HE Jun,XIAO Sh u-fang.SOME INFLUENCE OF BOND WATER ON RHEOLOGICAL PROPERTIES OF MARINE SOFT SOILS[J].Journal of Jilin Unviersity:Earth Science Edition,2003,33(2):204-207.
Authors:HE Jun  XIAO Sh u-fang
Abstract:The deformation and stren gt h properties of marine soft soil are apparently related to time factor, which is somewhat accounted to the multitudinous bond water in the soils. Under certain stress, gravitational water is drained out first, followed by the bond water. T he thickness of bond water will change accordingly. Due to the stress, the thick ness of bond water changed, then does the coefficient of viscosity. Through the shear creep test, the linear relationship between the coefficient of viscosity a nd stress is found. The relationship is discussed in this paper, and the consti tutivemodel can be set up which is accord with the actual engineering.
Keywords:marine soft soil  bond water  coefficient of viscosity
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