[1]王艳芳,蔡燕燕,蔡正银.饱和砂土蠕变特性实验[J].华侨大学学报(自然科学版),2017,38(1):31-37.[doi:10.11830/ISSN.1000-5013.201701006]
 WANG Yanfang,CAI Yanyan,CAI Zhengyin.Experimental Investigation of Creep Properties of Saturated Sand[J].Journal of Huaqiao University(Natural Science),2017,38(1):31-37.[doi:10.11830/ISSN.1000-5013.201701006]
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饱和砂土蠕变特性实验()
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《华侨大学学报(自然科学版)》[ISSN:1000-5013/CN:35-1079/N]

卷:
第38卷
期数:
2017年第1期
页码:
31-37
栏目:
出版日期:
2017-01-09

文章信息/Info

Title:
Experimental Investigation of Creep Properties of Saturated Sand
文章编号:
1000-5013(2017)01-0031-07
作者:
王艳芳1 蔡燕燕2 蔡正银3
1. 南京大学 金陵学院, 江苏 南京 210093;2. 华侨大学 福建省隧道与城市地下空间工程技术研究中心, 福建 厦门 361021;3. 南京水利科学研究院 岩土工程研究所, 江苏 南京 210014
Author(s):
WANG Yanfang1 CAI Yanyan2 CAI Zhengyin3
1. Jinling College, Nanjing University, Nanjing 210093, China; 2. Fujian Engineering Technology Research Center for Tunnel and Underground Space, Huaqiao University, Xiamen 361021, China; 3. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210014, China
关键词:
砂土 排水蠕变特性 剪胀 密实度 Mesri蠕变
Keywords:
sand drained creep property shear dilatancy dense degree Mesri creep
分类号:
TU447
DOI:
10.11830/ISSN.1000-5013.201701006
文献标志码:
A
摘要:
为证实和进一步了解砂土蠕变规律,利用室内改装的应力控制式三轴仪研究饱和砂土排水蠕变特性.实验结果表明:砂土蠕变受围压和密实度的影响较大,低围压下,砂样更易发生剪胀;密实砂蠕变变形量明显比中密砂小,密实砂比中密砂更易剪胀;侧向减载条件比轴向加载更易剪胀;在应力水平不超过0.8的情况下,Mesri蠕变模型对砂土蠕变规律拟合效果较好.
Abstract:
In order to verify and investigate further the sandy soil creep properties, the stress-controlled triaxial apparatuses are used to study the drainage creep of saturated sand. The result shows that the creep of saturated sand is significantly affected by confining pressure and dense degree. Under low confining pressure, the sample shear dilatancy occurs easily. The creep deformation of dense sand is significantly smaller than the deformation of middle dense sand, the dense sand shear dilatancy occurs more frequently by comparison with middle dense sand. When the stress level is less than 0.8, the Mesri creep model is fitted well for sandy soil creep.

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备注/Memo

备注/Memo:
收稿日期: 2016-05-28
通信作者: 王艳芳(1983-),女,副教授,博士,主要从事岩土工程方面的研究.E-mail:wyf_02@163.com.
基金项目: 国家自然科学基金资助项目(51308234)
更新日期/Last Update: 2017-01-20