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冰川冻土 ›› 2017, Vol. 39 ›› Issue (1): 92-101.doi: 10.7522/j.issn.1000-0240.2017.0012

• 寒区科学与技术 • 上一篇    下一篇

循环荷载下冻土变形特性研究现状及冻土开挖问题

栗晓林1,4, 王红坚2, 邹少军2, 马浩诚3, 牛永红1   

  1. 1. 中国科学院 西北生态环境资源研究院 冻土工程国家重点实验室, 甘肃 兰州 730000;
    2. 陆军工程兵科研一所, 江苏 无锡 214035;
    3. 兰州交通大学博文学院 土木工程系, 甘肃 榆中 730101;
    4. 中国科学院大学, 北京 100049
  • 收稿日期:2016-09-10 修回日期:2016-12-12 出版日期:2017-02-25 发布日期:2017-06-03
  • 通讯作者: 牛永红,E-mail:yhniu@lzb.ac.cn. E-mail:yhniu@lzb.ac.cn
  • 作者简介:栗晓林(1990-),男,山西大同人,2014年毕业于内蒙古科技大学,现为中国科学院西北生态环境资源研究院在读硕士研究生,从事寒区工程和冻土力学方面的研究.E-mail:lxlin1102@126.com
  • 基金资助:
    国家自然科学基金项目(41071045);冻土工程国家重点实验室自主研究课题(SKLFSE-ZY-15)资助

Research state of deformation characteristics of frozen soil under cyclic loading and problems in frozen soil excavation

LI Xiaolin1,4, WANG Hongjian2, ZOU Shaojun2, MA Haocheng3, NIU Yonghong1   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. The First Engineers Scientific Research Institute of Army, PLA, Wuxi 214035, Jiangsu, China;
    3. Department of Civil Engineering, Lanzhou Jiaotong University Bowen College, Yuzhong 730101, China;
    4. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-09-10 Revised:2016-12-12 Online:2017-02-25 Published:2017-06-03

摘要: 讨论了循环荷载作用下冻土的变形特性,总结了前人对冻土变形特性的研究成果。重点阐述了影响冻土变形特性的主要因素,包括土质、含水量、含冰量、温度、围压、动应力振幅和频率对冻土变形特性的影响及其研究现状和主要结论。简要论述了冻土开挖方面的研究情况,并强调了冻土机械开挖方法的重要性。最后针对高效开挖冻土的实际需求,提出了进行冻土变形特性进一步研究的几点建议。

关键词: 冻土变形, 循环荷载, 影响因素, 冻土开挖

Abstract: The deformation characteristics of frozen soil under cyclic loading are discussed, with the research achievements of predecessors on the deformation properties of frozen soil. The state of research and main conclusions on the impacts of the main factors, such as soil type, moisture content, ice content, temperature, confining pressure, amplitude and frequency of cyclic loading, are deeply studied. The importance of mechanical excavation method of frozen soil is stressed after a brief discussion of the present of the excavation practices in frozen soil. At last, some suggestions are presented for further studies on the deformation characteristics of frozen soil, aiming at improving the efficiency of frozen soil excavation.

Key words: frozen soil deformation, cyclic loading, influence factors, frozen soil excavation

中图分类号: 

  • P642.14