• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Soils and foundations >Effects of principal stress rotation on stress-strain behaviors of saturated clay under traffic-load-induced stress path
【24h】

Effects of principal stress rotation on stress-strain behaviors of saturated clay under traffic-load-induced stress path

机译：交通荷载引起的应力路径下主应力旋转对饱和黏土应力应变特性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A series of cyclic torsional shear tests using hollow cylinder apparatus (HCA) were performed to investigate the effect of principal stress rotation (PSR) on the stress-strain behaviors of saturated soft clay. The traffic-load-induced shear stress path was used in the cyclic test and the investigation mainly concerned the influence of PSR on the shear stiffness and non-coaxiality. It indicated that the effects of PSR substantially depends on the magnitude of deviatoric stress (q = {[(sigma(1) - sigma(2))(2) + (sigma(2) - sigma(3))(2) + (sigma(1) - sigma(3))(2)]/2}(1/2)) as well as the intermediate principal stress ratio (b = (sigma(2) - sigma(3))/(sigma(1) - sigma(3))). At low deviatoric stress, the trajectory envelope of deviatoric strain path translates with a nearly constant size, showing constant shear stiffness and strong non-coaxiality. However, at high deviatoric stress, the trajectory envelope of deviatoric strain rapidly expands towards instability, showing degenerating shear stiffness and weak non-coaxiality. Moreover, the excess pore water pressure increases and the shear stiffness decreases more rapidly as b value increases. The results can provide an experimental basis for constitutive modelling of clays under traffic-induced loadings. (C) 2018 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
机译：进行了一系列使用空心圆柱体装置（HCA）的循环扭转剪切试验，以研究主应力旋转（PSR）对饱和软黏土的应力-应变行为的影响。在循环试验中采用了交通荷载引起的剪切应力路径，研究主要涉及PSR对剪切刚度和非同轴度的影响。它表明PSR的影响主要取决于偏应力的大小（q = {[（（sigma（1）-sigma（2））（2）+（sigma（2）-sigma（3））（2）+ （sigma（1）-sigma（3））（2）] / 2}（1/2））以及中间主应力比（b =（sigma（2）-sigma（3））/（sigma（ 1）-sigma（3）））。在低偏应力下，偏应变路径的轨迹包络线以几乎恒定的大小平移，显示恒定的剪切刚度和强的非同轴性。然而，在高偏应力下，偏应变的轨迹包络线迅速向不稳定性扩展，显示出剪切刚度退化和弱的非同轴性。而且，随着b值的增加，多余的孔隙水压力增加，剪切刚度下降得更快。研究结果可为交通荷载作用下的黏土本构模型提供实验依据。 （C）2018年由Elsevier B.V.代表日本岩土工程学会制作和托管。

著录项

  • 来源
    《Soils and foundations》 |2019年第1期|41-55|共15页
  • 作者

    Qian Jiangu; Du Zibo; Lu Xilin; Gu Xiaoqiang; Huang Maosong;

  • 作者单位

    Tongji Univ, Dept Geotech Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China|Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China;

    Tongji Univ, Dept Geotech Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China|Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China|Zhengzhou Univ, Sch Civil Engn, 100 Sci Ave, Zhengzhou 450001, Henan, Peoples R China;

    Tongji Univ, Dept Geotech Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China|Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China;

    Tongji Univ, Dept Geotech Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China|Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China;

    Tongji Univ, Dept Geotech Engn, 1239 Siping Rd, Shanghai 200092, Peoples R China|Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Saturated clay; Hollow cylinder apparatus; Principal stress rotation; Intermediate principal stress ratio; Non-coaxiality;

    机译：饱和黏土;空心圆筒装置;主应力旋转;中间主应力比;非同轴度;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号