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冰川冻土 ›› 2014, Vol. 36 ›› Issue (4): 934-943.doi: 10.7522/j.issn.1000-0240.2014.0113

• 冻土模型与冻土物理力学性质 • 上一篇    下一篇

季节冻土区压实黄土湿陷特性研究进展与展望

李国玉1, 马巍1, 穆彦虎1, 毛云程1,2, 陈赵育1,3, 王飞1, 房建宏4   

  1. 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;
    2. 甘肃省交通科学研究院有限公司, 甘肃 兰州 730050;
    3. 中国科学院大学, 北京 100049;
    4. 青海省交通科学研究院, 青海 西宁 810008
  • 收稿日期:2014-03-06 修回日期:2014-06-10 发布日期:2014-08-23
  • 作者简介:李国玉(1975-),男,甘肃靖远人,副研究员,2007年在中国科学院寒区旱区环境与工程研究所获博士学位,现主要从事冻土力学、寒区岩土工程与环境等方面的研究.E-mail:guoyuli@lzb.ac.cn
  • 基金资助:
    国家重点基础研究发展计划(973计划)项目(2012CB026106);甘肃省科技重大专项计划项目(143GKDA007);国家自然科学基金创新群体项目(41121061);中国科学院“西部之光”重点项目;冻土工程国家重点实验室自主课题(SKLFSE-ZY-11;SKLFSE-ZT-16)资助

Progress and prospects of the research on collapsibility of compacted loess in seasonally frozen ground regions

LI Guoyu1, MA Wei1, MU Yanhu1, MAO Yuncheng1,2, CHEN Zhaoyu1,3, WANG Fei1, FANG Jianhong4   

  1. 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. Gansu Provincial Transportation Research Institute Co., Ltd., Lanzhou 730050, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Qinghai Research Institute of Tranportation, Xining 810008, China
  • Received:2014-03-06 Revised:2014-06-10 Published:2014-08-23

摘要: 随着国家西部大开发的深入发展,国家重点基础工程向西部季节冻土区和湿陷性黄土地区推进,工程面临的黄土湿陷性问题和冻融灾害问题已成为研究和设计人员关注的焦点. 基于前期的研究基础,分析和总结了压实黄土湿陷机理、本构模型和强度理论、工程特性、干湿和冻融循环以及盐分对压实黄土工程特性的影响等方面的研究现状,提出季节冻土区黄土工程面临的问题和研究展望,为完善黄土地基湿陷机理解释和深化黄土力学与工程等研究提供新思路和新方法.

关键词: 黄土路基, 冻融循环, 干湿循环, 宏观和微观结构, 黄土湿陷性, 盐渍土

Abstract: With development in western China, some national key projects will be built in seasonally frozen ground regions and collapsible loess areas in western China. Engineering problems associated with freezing-thawing and loess collapsibility have become concerns by researcher and designer. Based on the previous studies, loess collapse mechanism, constitutive model, strength theory, engineering properties, impacts of freezing-thawing and wet-dry cycles and salt on engineering properties are analyzed and summarized in this paper. Meantime, some ongoing engineering problems and prospects are put forward in seasonally frozen ground regions and in loess areas, which provide new ideas and methods for improving the interpretation of collapsing mechanisms of loess subgrade and for expanding investigation on loess mechanics.

Key words: loess subgrade, freezing-thawing cycle, wet-dry cycle, macro- and micro-structure, loess collapsibility, saline soil

中图分类号: 

  • P642.13+1