[1]卞夏,洪振舜,曾玲玲.初始含水率对重塑黏土孔压特性影响试验研究[J].东南大学学报(自然科学版),2012,42(4):749-754.[doi:10.3969/j.issn.1001-0505.2012.04.033]
 Bian Xia,Hong Zhenshun,Zeng Lingling.Experimental study on pore-water pressure behavior of reconstituted clays with different initial water contents[J].Journal of Southeast University (Natural Science Edition),2012,42(4):749-754.[doi:10.3969/j.issn.1001-0505.2012.04.033]
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初始含水率对重塑黏土孔压特性影响试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第4期
页码:
749-754
栏目:
土木工程
出版日期:
2012-07-20

文章信息/Info

Title:
Experimental study on pore-water pressure behavior of reconstituted clays with different initial water contents
作者:
卞夏1 洪振舜1 曾玲玲2
1 东南大学岩土工程研究所, 南京 210096; 2 福州大学土木工程学院, 福州350108
Author(s):
Bian Xia1 Hong Zhenshun1 Zeng Lingling2
1 Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
2 College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
关键词:
重塑黏土 初始含水率 三轴试验 孔隙水压力 应力比
Keywords:
reconstituted clay initial water content triaxial test pore-water pressure stress ratio
分类号:
TU411
DOI:
10.3969/j.issn.1001-0505.2012.04.033
摘要:
针对具有不同初始含水率的2种重塑黏土进行三轴固结不排水剪切试验(CU试验),得到了不同初始含水率重塑土三轴不排水剪切试验过程中孔隙水压力与轴向应变的关系曲线.通过对孔隙水压力分别随平均正应力和偏应力的变化规律进行深入研究,发现不同初始含水率重塑土归一化孔压u/p’00与有效应力比η之间均呈很好的线性关系.同时采用Balasubramaniam提出的归一化方法能够很好地将给定初始含水率不同固结压力下的孔压曲线进行归一化; 而初始含水率与u/p00曲线的斜率C之间则呈近似线性减小的关系.最终基于Wood提出的孔压公式,提出了考虑初始含水率影响的孔压系数a的确定方法.
Abstract:
Based on a series of isotropically consolidated undrained triaxial compression shear tests(CU tests), the pore pressure-axial strain curves of reconstituted clays with different initial water contents are obtained. A strong linear correlation between normalized pore pressure u/p’00 and effective stress ratio η is found by studying on the relationship between pore pressure and mean pressure or deviator pressure. Furthermore, the normalized method proposed by Balasubramaniam is used in the clay, and the slope of u/p00 curve shows a linear decrease tendency with initial water content. Finally, using the equation of pore pressure proposed by Wood, a method for determining the pore pressure parameter a considering the influence of initial water content is suggested.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 卞夏(1988—),男,博士生; 洪振舜(联系人),男,博士,教授,博士生导师,zshong@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(41172240,41102168).
引文格式: 卞夏,洪振舜,曾玲玲.初始含水率对重塑黏土孔压特性影响试验研究[J].东南大学学报:自然科学版,2012,42(4):749-754. [doi:10.3969/j.issn.1001-0505.2012.04.033]
更新日期/Last Update: 2012-07-20