文章摘要
任懿,杨海天,牛斌,阎军.基于均匀化方法的土工格栅等效本构关系研究[J].,2009,(3):317-321
基于均匀化方法的土工格栅等效本构关系研究
A homogenization-based investigation on equivalent constitutive relationship of geogrid
  
DOI:10.7511/dllgxb200903002
中文关键词: 土工格栅  均匀化  本构关系
英文关键词: geogrid homogenization constitutive relationship
基金项目:国家自然科学基金资助项目(10772035,10721062,10472019);“九七三”国家重点基础研究规划资助项目(2005CB321704);辽宁省中青年学术带头人基金资助项目.
作者单位
任懿,杨海天,牛斌,阎军  
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中文摘要:
      土工格栅在岩土、交通、水利等工程中发挥着重要作用.将土工格栅与土看做一种广义复合材料,选取恰当的代表单胞,采用基于周期结构多尺度渐近分析的均匀化技术,建立了预测弹性等效本构参数的数值计算模型.利用该模型,可方便合理地考虑各组分材料性质、尺寸对宏观等效弹性参数的影响,从而为土工格栅等效弹性参数的试验研究及土工格栅的设计提供有益的理论参考,其思路也可推广于格栅与土体宏观等效蠕变本构特性的预测.
英文摘要:
      Geogrid plays an important role in geotechnical, transportation and water conservancy projects. Geogrid and soil are regarded as a kind of general composite material for which the representative cell is selected reasonably. A numerical model to evaluate equivalent elastic constitutive parameters is developed via a multi-scale asymptotic analysis for periodic structures-based homogenizing technology, and the effects of properties and sizes of component materials on the macro-equivalent elastic constitutive parameters can be taken into account conveniently. The work presented here may provide valuable reference for the further application of geogrid and help in the promotion of the forecast of the geogrid and soil macro-equivalent creep constitutive properties.
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