[1]付艳斌,宋博通,朱合华.卸载作用下淤泥质黏土流变规律试验研究[J].深圳大学学报理工版,2009,26(4):400-404.
 FU Yan-bin,SONG Bo-tong,and ZHU He-hua.Experimental study on rheological property of muddy clay under unloading[J].Journal of Shenzhen University Science and Engineering,2009,26(4):400-404.
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卸载作用下淤泥质黏土流变规律试验研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第26卷
期数:
2009年4期
页码:
400-404
栏目:
土木建筑工程
出版日期:
2009-10-31

文章信息/Info

Title:
Experimental study on rheological property of muddy clay under unloading
文章编号:
1000-2618(2009)04-0400-05
作者:
付艳斌1宋博通1朱合华2
1)深圳大学土木工程学院,深圳 518060;
2)同济大学地下建筑与工程系,上海 200092
Author(s):
FU Yan-bin1SONG Bo-tong1and ZHU He-hua2
1)College of Civil Engineering,Shenzhen University,Shenzhen 518060,P. R. China
2)Key Laboratory of Geotechnical and Underground,Engineering Ministry of Education,Tongji University,Shanghai 200092,P. R. China
关键词:
卸载土体饱和淤泥质软土基坑开挖回弹模量压缩模量
Keywords:
unloading soilsaturated muddy clayfoundation excavationrebound moduluscompressive modulus
分类号:
TU 528.041; TU 528.044
文献标志码:
A
摘要:
利用常规压缩仪对上海饱和淤泥质软土进行一维分级卸载实验,得到淤泥质黏土在卸载作用下的应力应变关系,及回弹变形与回弹模量的时效性规律.试验结果表明,回弹变形与卸载比近似呈线性关系;土样在卸载瞬间,回弹速率最大,其后随时间迅速衰减;回弹模量随时间近似呈指数衰减,可用指数方程进行归一化拟合;卸载后的回弹模量远大于压缩模量,其最小比值介于2~7之间.
Abstract:
One-dimensional unloading tests were carried out on saturated muddy clay samples from Shanghai by means of routine compressometer. Stress-strain relationship and time-dependency properties of rebound deformation and rebound modulus of muddy clay samples were obtained. The results show that rebound deformation is approximately linear related to unload ratio. Rebound speed reaches the maximum when soil sample is unloaded,and then it decreases quickly with time. The change of rebound modulus with time is normalized to fit with an exponential equation. Rebound modulus much greater than compressive modulus,and the retios under differcst unloading are of the range between 2 and 7.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2009-02-04;修回日期:2009-09-20
基金项目:国家高新技术研究发展计划资助项目(2006AA11Z102);深圳市科技计划资助项目(SY200806270077A)
作者简介:付艳斌(1977-),男(汉族),湖北省随州市人,深圳大学讲师、博士. E-mail:fuyanbin999@163.com
更新日期/Last Update: 2009-11-09