颗粒链结构形态土体强度模型研究

卫振海 王梦恕 张顶立

卫振海 王梦恕 张顶立. 颗粒链结构形态土体强度模型研究[J]. 工程力学, 2012, 29(增刊Ⅱ): 85-92. DOI: 10.6052/j.issn.1000-4750.2011.11.S028
引用本文: 卫振海 王梦恕 张顶立. 颗粒链结构形态土体强度模型研究[J]. 工程力学, 2012, 29(增刊Ⅱ): 85-92. DOI: 10.6052/j.issn.1000-4750.2011.11.S028
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WEI Zhen-hai. STUDY ON SOIL STRENGTH MODEL IN PARTICLE CHAIN STRUCTURE[J]. Engineering Mechanics, 2012, 29(增刊Ⅱ): 85-92. DOI: 10.6052/j.issn.1000-4750.2011.11.S028
Citation: WEI Zhen-hai. STUDY ON SOIL STRENGTH MODEL IN PARTICLE CHAIN STRUCTURE[J]. Engineering Mechanics, 2012, 29(增刊Ⅱ): 85-92. DOI: 10.6052/j.issn.1000-4750.2011.11.S028
shu

颗粒链结构形态土体强度模型研究

  • (1. 北京交通大学土木建筑工程学院，北京 100044；2. 后勤指挥学院后方专业勤务系，北京 100858)

详细信息

  • 中图分类号: TU318; TU43

STUDY ON SOIL STRENGTH MODEL IN PARTICLE CHAIN STRUCTURE

  • (1. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. School of Rear Professional Service, Logistics Command Academy, Beijing 100858, China)

摘要

    摘要
  • 摘要: 具有结构性的土体强度问题一直是岩土领域研究的重要问题。岩土的结构非常复杂，其中颗粒相互连接构成颗粒链状态是重要结构形态之一。该文通过建立的土体结构的颗粒链模型，对一般类型的颗粒链和摩擦型类型颗粒链的形成条件进行了分析，得到了摩擦型颗粒链形成稳定链的条件。并以此为基础，试图建立了基于颗粒稳定链的土体强度理论。分析发现摩擦型颗粒材料中颗粒形成稳定链的条件，既和颗粒构成的组构关系有关，也和颗粒的形态有关；颗粒链的强度会影响到土体的宏观强度；土体中颗粒稳定链的长度、密度和方向分布等因素是影响土体强度的重要因素，并且这些因素是反映和描述土体结构性的重要参数。基于颗粒稳定链的土体强度理论，从某一方面揭示了摩擦型颗粒材料承担荷载的本质。
    Abstract: The structural soil strength has always been an important issue in the soil and rock research. The soil and rock is structurally complicated, with a particle chain structure formed by the interconnection of soil particles as one of the dominant morphologies. The analysis for the formation conditions of the particle chain structure of a general type and a friction type is made through building a soil particle chain model, which is used to obtain the conditions for the friction-type particle chain to become stable. On this basis, we attempt to work out soil strength theory for a stable particle chain. It is found from the analysis that the conditions for friction-type soil particles to form a stable chain are related to the fabric relationship of particle composition and also to particle morphology; the strength of a particle chain can influence the soil macro-strength; the length, density and directional distribution of stable particle chains in the soil are important factors for soil strength and also important parameters to characterize the above-mentioned soil structure. The nature of friction-type particle materials to withstand the load is revealed from a particular perspective based on this soil strength theory for a stable particle chain.
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    • 参考文献(14)
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出版历程
  • 收稿日期:  2011-04-18
  • 修回日期:  2012-07-17
  • 刊出日期:  2012-12-24

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