南宁非饱和膨胀土剪切蠕变特性试验研究

范志强; 肖宏彬

doi:10.13204/j.gyjz200911017

南宁非饱和膨胀土剪切蠕变特性试验研究

doi: 10.13204/j.gyjz200911017

范志强¹,
肖宏彬^2,3

1.
1. 中国建筑第五工程局有限公司,长沙 410004;
2.
2. 湖南工业大学岩土工程研究所,株洲 412008;
3.
3. 中南林业科技大学,长沙 410004

基金项目:

国家自然科学基金资助项目(50978097);湖南省自然科学基金资助项目(08JJ3092);湖南省科技厅基金资助项目(2007FJ3077)

详细信息

作者简介:
范志强，男，1976年10月出生，工程师，硕士研究生。E-mail:jsfzq@163.com

计量
- 文章访问数: 60
- HTML全文浏览量: 5
- PDF下载量: 104
- 被引次数: 0
出版历程
- 收稿日期: 2009-03-14
- 刊出日期: 2009-11-20

EXPERIMENTAL STUDY ON SHEAR CREEP CHARACTERISTICS OF NANNING UNSATURATED EXPANSIVE SOILS

Fan Zhiqiang¹,
Xiao Hongbin^2,3

1.
1. China Construction Fifth Engineering Division Corp. ,Ltd. ,Changsha 410004,China;
2.
2. Institute of Geotechnical Engineering,Hunan University of Technology,Zhuzhou 412008,China;
3.
3. Central South University of Forestry and Technology,Changsha 410004,China

摘要

摘要: 通过改装的剪应力控制式直剪仪对南宁非饱和膨胀土进行系列室内试验研究,探讨非饱和膨胀土的非线性流变特性。试验结果表明:当剪应力小于或等于25.5 kPa时,土体表现为衰减蠕变,当剪应力高于25.5 kPa时,土体具有明显的非线性流变特性。同时,通过对剪切蠕变曲线的拟合发现,南宁非饱和膨胀土的流变可以用Bu体模型来描述,并能得出其相应的本构方程和蠕变方程。
- 非饱和 /
- 膨胀土 /
- 剪切 /
- 非线性 /
- Bu体模型
Abstract: On the basis of a series of indoor tests for unsaturated Nanning expansive soils through creep testing apparatus controlled by shearing force,nonliner rheological characteristics of the expansive soils were researched.The results show that the soil performs for attenuation when shear stress is less than or equal to 25.5 kPa,but the soil has obvious non linear rheological behavior when shear stress is higher than 25.5 kPa.Through the experiment creep curve can be described by Burgers model,the constitutive equation and the creep equation of the expansive soils also be obtained.
- unsaturated /
- expansive soil /
- shear /
- nonlinear /
- Bu model

HTML全文

参考文献(11)

张玉芳.京珠高速公路108滑坡及防治工程分析[J].西南交通大学学报,2003,38(6):633-637.

[2] 朱宝龙,胡厚田,姚勇.类软土单轴剪切蠕变特性研究[J].西南科技大学学报,2006,21(2):1-6,39.

[3] 王祥秋,高文苏,陈秋南,等.地基土非线性流变特性试验与归一化模型研究[J].湘潭矿业学院学报,2001,16(2):56-59.

[4] 马莉英,肖树芳,王清.黄土的流变模拟与研究[J].实验力学,2004,19(2):178-182.

[5] 曾庆国,张春顺,肖宏彬.南宁膨胀土的次固结特性试验研究[J].公路工程,2008,33(1):10-13.

[6] Xiao Hong-bin,Zeng Qing-guo,Zhang Chun-shun,et al.ContrastiveExperiment Study on Rheological Characteristics for Nanning ExpansiveSoil[C]//AN International Conference on Geotechnical Engineering.Changsha:Central South University,2007:389-398.

[7] Xiao Hong-bin,Miao Peng,Fan Zhi-qiang.Research on Strength andDeformation of Unsaturated Expansive Soils with the Tri-axialApparatus[C]//An International Conference on GeotechnicalEngineering.Changsha:Central South University,2007:373-380.

[8] Xiao Hong-bin,Miao Peng,Zhang Chun-shun.Research onMeasurement and Disciplinarian of Vertical Swelling Force of ExpansiveSoils by Ameliorative Experiments[C]//An International Conference onGeotechnical Engineering.Changsha:Central South University,2007:381-388.

[9] 范志强,肖宏彬,张亦静.南宁非饱和膨胀土压缩蠕变特性试验研究[J].湖南工业大学学报,2009,23(1):1-5.

[10] 古任国,房营光.一种改进的土体直剪蠕变仪及应用[J].岩石力学与工程学报,2006,25(S.2):3552-3558.

[11] 周德培.流变力学原理及其在岩土工程中的运用[M].成都:西南交通大学出版社,1996.

施引文献

资源附件(0)

访问统计