期刊文献+

基于试样中部变形的p-q-s空间临界状态面试验研究 被引量:3

Critical state surface in p-q-s stress space based on deformation of middle part of specimens
下载PDF
导出
摘要 在一系列控制吸力的非饱和压实土三轴剪切试验中,应用数字图像测量技术获得了避开端部效应影响的试样中部1/3区域的强度及变形试验数据。由试验结果对非饱和土p–q–s三维应力空间临界状态面与LC屈服面交线在p–q平面、q–s平面和s–p平面的投影曲线进行了研究,进而全面地描述了非饱和土三维应力空间中的临界状态面的合理形态,修正了Alonso模型中的临界状态线表达式并进行了验证。 The digital image measurement technique is employed in a series of suction-controlled unsaturated compacted soil triaxial tests to get the strength and deformation test data of the middle part of specimens, avoiding the end effect. The projective shape of the spatial critical state lines on the three two-dimensional planes is further discussed, and the rational critical state surface shape of the unsaturated soil in the three-dimensional p-q-s space is fully demonstrated. The formula expression of the three-dimensional critical state surface in Alonso model is improved and also validated by use of the related data.
出处 《岩土工程学报》 EI CAS CSCD 北大核心 2009年第10期1607-1613,共7页 Chinese Journal of Geotechnical Engineering
基金 国家自然科学基金专项基金项目(50527803) 国家自然科学基金项目(50608014) 河北省自然科学基金项目(E2009000383)
关键词 非饱和土 吸力 三轴试验 数字图像测量:临界状态面 unsaturated soil suction triaxial test digital image measurement critical state surface
  • 相关文献

参考文献12

二级参考文献172

共引文献159

同被引文献26

  • 1陈正汉,孙树国,方祥位,周海清,谢云.非饱和土与特殊土测试技术新进展[J].岩土工程学报,2006,28(2):147-169. 被引量:68
  • 2崔颖,缪林昌.非饱和重塑土的临界状态研究[J].苏州科技学院学报(工程技术版),2006,19(2):26-29. 被引量:1
  • 3SHAO L T,LIU Y L,DONG J J.Strain measurement of soil specimen in triaxial test with digital image processing technology[C]// Proceedings of the 6th International Symposium on Test and Measurement.Dalian:[s.n.],2005:4 368-4 371.
  • 4SHAO L T,DONG J J,LIU Y L.Deformation measurement of unsaturated soil specimen in suction-controlled triaxial test based on digital image measurement method[C]// Proceedings of the 3rd Asian Conference on Unsaturated Soils.Nanjing:[s.n.],2007:505-512.
  • 5WHEELER S J,SIVAKUMAR V.An elasto-plastic critical state framework for unsaturated soil[J].Geotechnique,1995,45(1):35-53.
  • 6FREDLUND D G,MORGENSTERN N R.Stress state variables for unsaturated soils[J].Journal of the Geotechnical Engineering Division,ASCE,1977,103(5):447-466.
  • 7FREDLUND D G,MORGENSTERN N R,WIDGER R A.The shear strength of unsaturated soils[J].Canadian Geotechnical Journal,1978,15(3):313-321.
  • 8FREDLUND D G,MORGENSTEN N R.Constitutive relations for volume change in unsaturated soils[J].Canadian Geotechnical Journal,1976,13(3):261-276.
  • 9ALONSO E E,GENS A,JOSA A.A constitutive model for partially saturated soils[J].Geotechnique,1990,40(3):405-430.
  • 10中华人民共和国行业标准编写组.SL237-1999土工试验规程[s].北京:中国水利水电出版社,1999.

引证文献3

二级引证文献19

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部