| 基于扰动变量的非饱和原状土本构模型 |
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| 引用本文： | 金旭,赵成刚,蔡国庆,陈铁林.基于扰动变量的非饱和原状土本构模型[J].工程力学,2011(9):149-156,164. |
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| 作者姓名： | 金旭 赵成刚 蔡国庆 陈铁林 |
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| 作者单位： | 北京交通大学土木建筑学院; |
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| 基金项目： | 国家“973”项目(2010CB732100); 国家自然科学基金项目(50778013); 北京市自然基金项目(8082020) |
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| 摘 要： | 该文根据复合材料均匀化理论的思想建立了考虑水的滞后性与应力-应变特性相祸合的非饱和原状土本构模型。复合材料均匀化理论的主要思想是将变形的岩土材料视为由相对完整状态土（RISP）和完全调整状态土（FASP）混合而成的复合材料，RISP和FASP的力学性能分别与原状土和重塑土的力学性能相同。另外，在土体的变形过程中，RIS...
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| 关 键 词： | 非饱和原状土 扰动变量 本构模型 土结构性 土-水特征曲线 相对完整状态土 完全调整状态土 |
A CONSTITUTIVE MODEL FOR UNSATURATED NATURAL SOILS BASED ON DISTURBING VARIABLE |
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| JIN Xu,ZHAO Cheng-gang,CAI Guo-qing,Chen Tie-lin.A CONSTITUTIVE MODEL FOR UNSATURATED NATURAL SOILS BASED ON DISTURBING VARIABLE[J].Engineering Mechanics,2011(9):149-156,164. |
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| Authors: | JIN Xu ZHAO Cheng-gang CAI Guo-qing Chen Tie-lin |
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| Affiliation: | JIN Xu,ZHAO Cheng-gang,CAI Guo-qing,Chen Tie-lin(Department of Geotechnical Engineering,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | Based on the homogenization theory of composite materials,a constitutive model for unsaturated natural soils considering the coupling of hydraulic hysteresis and stress-strain behaviour is proposed.The main idea of the homogenization theory is to consider the deforming unsaturated natural soil as a mixture of two parts in relative intact(RISP) and fully adjusted states(FASP),whose mechanical properties are the same as those of natural and reconstituted soils,respectively.As the deformation progresses,RISP w... |
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| Keywords: | unsaturated natural soils disturbing variable constitutive model soil structure soil-water characteristic curve relative intact part fully adjusted part |
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