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冻土弹塑性本构模型研究现状
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  • 英文篇名:State-of-art of research on elastoplastic constitutive models of frozen soil
  • 作者:李楠楠 ; 范彩霞 ; 白瑞强
  • 英文作者:LI Nannan;FAN Caixia;BAI Ruiqiang;Institute of Transportation, Inner Mongolia University;State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences;University of Chinese Academy of Sciences;
  • 关键词:冻土 ; 本构模型 ; 非线性 ; 弹塑性 ; 超塑性理论
  • 英文关键词:frozen soil;;constitutive model;;nonlinearity;;elastoplastic;;superplasticity theory
  • 中文刊名:冰川冻土
  • 英文刊名:Journal of Glaciology and Geocryology
  • 机构:内蒙古大学交通学院;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;中国科学院大学;
  • 出版日期:2019-05-30 18:07
  • 出版单位:冰川冻土
  • 年:2019
  • 期:03
  • 基金:国家自然科学基金项目(51769018);; 内蒙古自治区自然科学基金项目(2017MS0106);; 内蒙古自治区高等学校青年科技英才支持计划项目(NJYT-18-B02)资助
  • 语种:中文;
  • 页:148-158
  • 页数:11
  • CN:62-1072/P
  • ISSN:1000-0240
  • 分类号:P642.14
摘要
土体的本构模型是分析计算土工结构变形规律的关键。自剑桥模型提出以来,对于土体本构模型的研究,各国学者在不同环境条件下发展研究了适用于相应试验条件下的各类模型。随着寒区经济的发展,关于冻土力学性质的研究日益增多,许多学者借鉴常规融土的研究方法建立了不同条件下的冻土弹塑性本构模型。为了进一步理清冻土变形行为的特征,完善适用于冻土弹塑性行为的本构模拟理论和方法,作者总结和分析了各类冻土弹塑性本构模型的理论基础、建模方法、参数确定方法等内容,对进一步发展可准确描述冻土复杂力学行为的本构模型具有指导意义。
        The constitutive model, which is able to accurately describe the deformation behavior of soil, is the key to obtain the real stress-strain rules of geotechnical structures. Since the Cambridge model putting forward in 1963, many scholars have done a lot of research on the elastoplastic constitutive model of soil, and put forward a large number of soil elastoplastic constitutive models. With the development and construction in cold regions, the researchers use the constitutive simulation method of soil thawing, combining with the characteristics of frozen soil mechanical properties, such as temperature sensitive, high frozen strength and ice pressure and melting under high stress level to carry out a series of studies about elastoplastic behavior and constitutive simulation of frozen soil under rapid loading. Different elastoplastic constitutive models for frozen soil have been established. In order to further clarify the characteristics of frozen soil deformation behavior and improve the constitutive modeling theory and method applicable to the elastoplastic behavior of permafrost, in this paper, the existing elastoplastic constitutive models of frozen soil have been summarized and compared, mainly to summarize and analyze the theoretical foundation, modeling method and parameter determination of various frozen soil elastoplastic constitutive models. The content of the method is useful for further developing the constitutive model which can accurately describe the complex mechanical behavior of frozen soil.
引文
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