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原生和次生各向异性对软黏土强度和变形特性影响研究

周建, 刘正义, 严佳佳

周建, 刘正义, 严佳佳. 原生和次生各向异性对软黏土强度和变形特性影响研究[J]. 岩土工程学报, 2013, 35(zk2): 666-670.
引用本文: 周建, 刘正义, 严佳佳. 原生和次生各向异性对软黏土强度和变形特性影响研究[J]. 岩土工程学报, 2013, 35(zk2): 666-670.
ZHOU Jian, LIU Zheng-yi, YAN Jia-jia. Effects of inherent and induced anisotropies on strength and deformation characteristics of soft clay[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 666-670.
Citation: ZHOU Jian, LIU Zheng-yi, YAN Jia-jia. Effects of inherent and induced anisotropies on strength and deformation characteristics of soft clay[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 666-670.

原生和次生各向异性对软黏土强度和变形特性影响研究  English Version

基金项目: 国家自然科学基金项目(50778162,51178422)
详细信息
    作者简介:

    周 建(1970- ),女,博士,副教授,硕士生导师,主要从事软黏土力学、地基处理、非饱和土本构模型等方面的研究。E-mail: dzhoujian@yahoo.com。

  • 中图分类号: TU435

Effects of inherent and induced anisotropies on strength and deformation characteristics of soft clay

  • 摘要: 为更好地区分原生各向异性和次生各向异性对软黏土的强度和变形特性的影响,对原生各向异性明显的原状软黏土和基本消除了原生各向异性的重塑黏土,利用空心圆柱扭剪仪进行了两种不同b值下主应力轴偏转角不同的不排水定轴剪切试验。试验结果表明原状黏土的内摩擦角以及归一化强度都随着主应力方向的变化先减小后增加,而重塑黏土变化不明显,说明主应力方向变化引起的次生各向异性对重塑黏土强度影响较小。此外,原生各向异性对土体的应力应变开展有较大影响,对孔压开展模式基本无影响,但会影响孔压开展幅值。近似各向同性的重塑土基本消除了原生各向异性,因此该试验可为主应力轴旋转等复杂应力路径条件下的土体各向异性的深入研究提供较好的参考。
    Abstract:

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出版历程
  • 收稿日期:  2013-07-16
  • 发布日期:  2013-11-24

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