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不同固结路径温州黏土固有不排水强度性状试验研究

史剑, 钱森, 曾玲玲, 洪振舜

史剑, 钱森, 曾玲玲, 洪振舜. 不同固结路径温州黏土固有不排水强度性状试验研究[J]. 岩土工程学报, 2014, 36(9): 1674-1679. DOI: 10.11779/CJGE201409014
引用本文: 史剑, 钱森, 曾玲玲, 洪振舜. 不同固结路径温州黏土固有不排水强度性状试验研究[J]. 岩土工程学报, 2014, 36(9): 1674-1679. DOI: 10.11779/CJGE201409014
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SHI Jian, QIAN Sen, ZENG Ling-ling, HONG Zhen-shun. Undrained shear behaviors of reconstituted Wenzhou clay under different consolidation stress paths[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1674-1679. DOI: 10.11779/CJGE201409014
Citation: SHI Jian, QIAN Sen, ZENG Ling-ling, HONG Zhen-shun. Undrained shear behaviors of reconstituted Wenzhou clay under different consolidation stress paths[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1674-1679. DOI: 10.11779/CJGE201409014
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不同固结路径温州黏土固有不排水强度性状试验研究  English Version

  • 1. 东南大学岩土工程研究所,江苏 南京 210096;
    2. 福州大学土木工程学院,福建 福州 350108

基金项目: 国家自然科学基金项目（41372309,41172240）
详细信息
    作者简介:

    史 剑(1988- ),男,博士,主要从事土的基本特性与本构关系研究。Email: scorpiojian@126.com。

  • 中图分类号: TU411

Undrained shear behaviors of reconstituted Wenzhou clay under different consolidation stress paths

  • 1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China;
    2. College of Civil Engineering, Fuzhou University, Fuzhou 350108, China

摘要

    摘要
  • 摘要: 为研究初始条件和应力状态对重塑黏土固有不排水强度性状的影响,采用应力路径三轴仪对室内制备的温州黏土进行一系列不同固结路径下的三轴固结不排水剪切试验。通过室内试验研究探讨温州黏土不同固结路径下不同平均有效应力固结后三轴不排水剪切应力应变关系和不排水强度特性;引入不同平均有效应力p’下的孔隙指数Iv与不排水强度比R*su=Su/ p’,分析不同固结路径下不排水强度Su的变化规律,并与Chandler提出的固有强度线ISuL进行比较分析。结果表明：相同平均有效应力p’下,不同固结路径下不排水剪切强度Su和不排水强度比R*su=Su/ p’随固结路径的变化而变化;当不排水强度比Su/ p’=0.33时,孔隙指数Iv与固结不排水强度Su之间的关系与Chandler的固有强度线ISuL一致。
    Abstract: To investigate the effects of the initial conditions and stress states on the intrinsic undrained strength behaviors of reconstituted clay, a series of consolidated undrained triaxial compression tests are performed on reconstituted Wenzhou clay under different consolidation conditions. The undrained shear stress-strain relationship and undrained strength are investigated. The void index Iv and the undrained strength ratios R*su=Su/ p’ with different mean effective stresses p’ are used to compare the undrained strength Su under different consolidation conditions with the Chandler intrinsic strength line ISuL. The results indicate that the undrained shear stress-strain curves change with the consolidation stress paths under the same mean effective stresses p’. The undrained shear strengths and undrained strength ratios R*su=Su/ p’ are also greatly affected by the consolidation stress paths. When Su/ p’=0.33, the relationship between the void index Iv and the undrained strength Su is identical to the Chandler intrinsic strength line ISuL.
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    • 参考文献(27)
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出版历程
  • 收稿日期:  2013-12-19
  • 发布日期:  2014-09-21

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