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冰川冻土 ›› 1995, Vol. 17 ›› Issue (3): 263-267.

• 研究论文 • 上一篇    下一篇

扭转荷载下冻土的强度特性

彭万巍1, 张建明1, 张长庆1, 康国瑾2, 王正贵2, 彭蕊2   

  1. 1. 中国科学院兰州冰川冻土研究所冻土工程国家重点实验室, 730000;
    2. 兰州大学, 730000
  • 收稿日期:1994-03-29 修回日期:1994-06-03 出版日期:1995-08-25 发布日期:2012-04-26

Strength Characteristics of Frozen Soil under Torsional Loading

Peng Wanwei1, Zhang Jianming1, Zhang Changqing1, Kang Guojin2, Wang Zhengui2, Peng Rui2   

  1. 1. State Key Laboratory of Frozon Soil Engineering, LIGG, CAS, 730000;
    2. Lanzhou University, 730000
  • Received:1994-03-29 Revised:1994-06-03 Online:1995-08-25 Published:2012-04-26

摘要: 对冻结黄土的一系列扭转试验结果表明:冻土受纯剪时的抗剪强度与其抗压、抗拉强度具有相同的规律。其抗剪强度随温度降低和破坏剪应变的减小而增大,同时也随扭速的加快而呈非线性递增。文中还给出了各影响因素的相关分析式。

关键词: 冻土, 扭转, 强度特性

Abstract: A series of torsion test data of frozen loess have been analyzed in this paper.The resultsindicate that the torsional strength is the same as that of the compressive or tensile one. Thestrength increases with lowing of temperature and decreasing of failure strain,Also it in-creases nonlinearly with increasing of rotative speed.The regressive equations relating to in-fluence factors are presented in this paper.

Key words: frozen loess, tortion test, strength characteristics