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冰川冻土 ›› 2007, Vol. 29 ›› Issue (4): 636-639.

• 寒区科学与技术 • 上一篇    下一篇

高围压下冻结粘土的抗压强度试验研究

常小晓, 马巍, 王大雁   

  1. 中国科学院, 寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃, 兰州, 730000
  • 收稿日期:2006-12-11 修回日期:2007-01-20 出版日期:2007-08-25 发布日期:2012-04-26
  • 基金资助:
    国家自然科学基金重点项目(50534040);国家自然科学基金项目(40401013)资助

Study on the Strength of Frozen Clay at High Confining Pressure

CHANG Xiao-xiao, MA Wei, WANG Da-yan   

  1. State Key Laboratory of Frozen Soil Engineering, CAREERI, CAS, Lanzhou Gansu 730000, China
  • Received:2006-12-11 Revised:2007-01-20 Online:2007-08-25 Published:2012-04-26

摘要: 以取自华东某地的深部粘土为研究对象,根据室内单轴和三轴压缩试验的试验结果,分析了高围压下冻结粘土的应力-应变行为与单轴压缩条件下应力-应变行为的异同,并讨论了围压和温度对冻结粘土强度的作用.

关键词: 冻结粘土, 高围压, 单轴压缩试验, 三轴压缩试验

Abstract: A large test program was conducted on the deep clay in East China to investigate the mechanic behaviour in the process of axial compression and triaxial compression.At the same time,the effect of negative temperature and confining pressure on the strength of frozen clay was analyzed.It is found that the stress-strain curves at high confining pressure belong to the strain hardening type and the strength of frozen clay responds intimately to the confining pressure in the range of the tested confined stress.With respect to temperature,the strength increases with temperature decreasing.

Key words: frozen clay, high confining pressure, axial compression experiment, triaxial compression experiment

中图分类号: 

  • P642.14