[1]丁建文,洪振舜,刘松玉.疏浚淤泥流动固化土的三轴剪切试验研究[J].东南大学学报(自然科学版),2011,41(5):1070-1074.[doi:10.3969/j.issn.1001-0505.2011.05.033]
 Ding Jianwen,Hong Zhenshun,Liu Songyu.Triaxial shear test of flow-solidified soil of dredged clays[J].Journal of Southeast University (Natural Science Edition),2011,41(5):1070-1074.[doi:10.3969/j.issn.1001-0505.2011.05.033]
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疏浚淤泥流动固化土的三轴剪切试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第5期
页码:
1070-1074
栏目:
交通运输工程
出版日期:
2011-09-20

文章信息/Info

Title:
Triaxial shear test of flow-solidified soil of dredged clays
作者:
丁建文洪振舜刘松玉
(东南大学交通学院,南京210096)
(东南大学岩土工程研究所,南京210096)
Author(s):
Ding JianwenHong ZhenshunLiu Songyu
(School of Transportation,Southeast University, Nanjing 210096, China)
(Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China)
关键词:
疏浚淤泥固化土三轴剪切试验强度包线双折线结构性
Keywords:
solidified soil of dredged clays triaxial shear test strength envelope double broken line structure
分类号:
U447
DOI:
10.3969/j.issn.1001-0505.2011.05.033
摘要:
为了分析高含水率疏浚淤泥流动固化土的强度特性,对疏浚淤泥流动固化土进行了三轴剪切试验研究.通过三轴试验仪,开展了不同配比和不同龄期的流动固化土的固结不排水(CU)三轴剪切试验.结果表明,疏浚淤泥流动固化土的抗剪强度包线由双折线组成,屈服前的强度包线与水平轴近似平行(平均夹角为4.8°),屈服后的强度包线与水平轴夹角增加了许多(平均为18.1°); 屈服后的强度包线几乎是一条过原点的直线.基于三轴剪切试验结果和传统的土的抗剪强度理论,给出了流动固化土的抗剪强度表达式.通过三轴试验,揭示了主应力差和孔隙水压力随围压增长的规律,明确了疏浚淤泥流动固化土的抗剪强度性状.
Abstract:
In order to investigate the strength properties of the flow-solidified soil of dredged clays with high water content, triaxial shear tests were carried out. The consolidation-undrained triaxial shear test for the flow-solidified soil with both different mixing proportion and different curing time were performed by triaxial apparatus. The experimental results show that the shear strength envelope is formed by double broken line for the solidified soil through triaxial shear test. The strength envelope is nearly parallel to the horizontal axis at pre-yield states (with an average angle of 4. 8°) and the angle between the strength envelope and horizontal axis increases greatly at post-yield states (with an average angle of 18. 1°). It can be found that the strength envelope at post-yield is almost a straight line passing through the origin. Subsequently, the shear strength expression is given for the flow-solidified soil based on experimental results and the traditional soil strength theory. Through numerous triaxial shear tests, the law of the deviator stress and the pore water pressure varying with the confining pressure is revealed, and the shear strength behavior of the flow-solidified soil of dredged clays is clearly demonstrated.

参考文献/References:

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相似文献/References:

[1]丁建文,万星,冯旭松,等.高含水率疏浚淤泥固化土的压缩模型[J].东南大学学报(自然科学版),2019,49(2):369.[doi:10.3969/j.issn.1001-0505.2019.02.024]
 Ding Jianwen,Wan Xing,Feng Xusong,et al.Compression model for solidified soil of dredged clays with high water content[J].Journal of Southeast University (Natural Science Edition),2019,49(5):369.[doi:10.3969/j.issn.1001-0505.2019.02.024]

备注/Memo

备注/Memo:
作者简介:丁建文(1975—),男,博士生,讲师;洪振舜(联系人),男,博士,教授,博士生导师,zshong@seu.edu.cn.
基金项目:国家高技术研究发展计划(863计划)资助项目(2007AA11Z135)、江苏省南水北调工程科技创新资助项目(KJCX-201003).
引文格式: 丁建文,洪振舜,刘松玉.疏浚淤泥流动固化土的三轴剪切试验研究[J].东南大学学报:自然科学版,2011,41(5):1070-1074.[doi:10.3969/j.issn.1001-0505.2011.05.033]
更新日期/Last Update: 2011-09-20