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UH模型在路堤软基变形分析中的应用

冯兴, 姚仰平, 李汝宁, 霍海峰

冯兴, 姚仰平, 李汝宁, 霍海峰. UH模型在路堤软基变形分析中的应用[J]. 岩土工程学报, 2017, 39(z2): 25-28. DOI: 10.11779/CJGE2017S2007
引用本文: 冯兴, 姚仰平, 李汝宁, 霍海峰. UH模型在路堤软基变形分析中的应用[J]. 岩土工程学报, 2017, 39(z2): 25-28. DOI: 10.11779/CJGE2017S2007
shu
FENG Xing, YAO Yang-ping, LI Ru-ning, HUO Hai-feng. Application of UH model to analysis of deformation of embankment on soft soils[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 25-28. DOI: 10.11779/CJGE2017S2007
Citation: FENG Xing, YAO Yang-ping, LI Ru-ning, HUO Hai-feng. Application of UH model to analysis of deformation of embankment on soft soils[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(z2): 25-28. DOI: 10.11779/CJGE2017S2007
shu

UH模型在路堤软基变形分析中的应用  English Version

  • 1. 中国民航大学机场学院,天津 300300;
    2. 北京航空航天大学交通科学与工程学院,北京 100191;
    3. 中国北方发动机研究所,天津 300400

基金项目: 国家自然科学基金项目（11672015,51308534）; 中央高校基本科研业务费项目（3122014C014）; 中国民航大学机场工程科研基地开放基金项目（JCGC2015KFJJ004）; 中国民航大学科研启动基金项目（2013QD12X）
详细信息
    作者简介:

    冯 兴(1980- ),女,河北石家庄人,博士,主要从事岩土工程数值计算研究。E-mail: fxing_sjz@foxmail.com。

Application of UH model to analysis of deformation of embankment on soft soils

  • 1. School of Airport, Civil Aviation University of China, Tianjin 300300, China;
    2. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China;
    3. China North Engine Research Institute, Tianjin 300400, China

摘要

    摘要
  • 摘要: 姚仰平等提出的统一硬化模型（UH模型）能够合理考虑土的复杂应力路径和应力历史对土体变形和强度的影响,它不仅能够描述正常固结土的特性,而且能够描述超固结土的硬化、软化、剪缩和剪胀等应力应变特性。通过在UH模型有限元程序中引入初始超固结比OCR,将OCR作为一个控制参数,采用该有限元程序对具有不同OCR地基土层的路堤软基进行了三维有限元分析,比较了与应用修正剑桥模型（MCC模型）计算的软基土体沉降随时间的变化曲线、地基表面点沉降量、竖向位置结点的水平位移的不同,得到了地基土体沉降变形规律,并与工程实测数据做了对比,说明了UH模型在分析实际路堤软基工程方面的合理性。
    Abstract: The unified hardening model (UH model) proposed by Yao et al. is the constitutive model which can consider the influence of the complex stress path and stress history on the deformation and strength of clays reasonably. It can describe the characteristics of the normal consolidated clays and the overconsolidated clays well, including stress-strain relationships, shear dilatancy and shrinkage, strain hardening and softening. The initial overconsolidation ratio (OCR) is introduced into the finite element program of UH model. By regarding OCR as the control parameter, the three-dimension finite element analysis of embankment on soft soil with different OCRs is performed by the program. The settling curves with the time, the settlements of each point on the surface of subgrade and the horizontal displacements at vertical points are compared using the UH model and the MCC model. The settlements of subgrade soil deformation are attained. The results of UH model are compared with the measured data, and it is illustrated that the UH model is rational in analyzing the actual embankment engineering on soft soil.
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    • 参考文献(8)
  • [1] HUANG W X, FITYUS S, BISHOP D, et al. Finite-Element parametric study of the consolidation behavior of a trial embankment on soft clay[J]. International Journal of Geomechanics, 2006, 6(5): 1-14.
    [2] OLIVEIRA P J V, LEMOS L J L. Numerical analysis of an embankment on soft soils considering large displacements[J]. Computers and Geotechnics, 2011, 38: 88-93.
    [3] 孙德安, 甄文战, 黄文雄. 三维弹塑性模型在路堤软基固结分析中应用[J]. 岩土力学, 2009, 30(3): 669-674. (SUN De-an, ZHEN Wen-zhan, HUANG Wen-xiong. Application of 3D elastoplastic model to analysis of consolidation behavior of embankment on soft soils[J]. Rock and Soil Mechanics, 2009, 30(3): 669-674. (in Chinese))
    [4] YAO Yang-ping, HOU Wei, ZHOU An-nan. UH model: three-dimensional unified hardening model for overconsolidated clays[J]. Géotechnique, 2009, 59(5): 451-469.
    [5] 姚仰平. UH模型系列研究[J]. 岩土工程学报, 2015, 37(2): 193-217. (YAO Yang-ping. Advanced UH models for soils[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(2): 193-217. (in Chinese))
    [6] 姚仰平, 冯 兴, 黄 祥, 等. UH模型在有限元分析中的应用[J]. 岩土力学, 2010, 31(1): 237-245. (YAO Yang-ping, FENG Xing, HUANG Xiang, et al. Application of UH model to finite element analysis[J]. Rock and Soil Mechanics, 2010, 31(1): 237-245. (in Chinese))
    [7] 冯 兴, 姚仰平, 李春亮, 等. UH模型在双层地基受力变形分析中的应用[J]. 岩土工程学报, 2012, 34(5): 805-811. (FENG Xing, YAO Yang-ping, LI Chun-liang, et al. Application of UH model to analysis of deformation of double-layer subgrade[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 805-811. (in Chinese))
    [8] 罗 汀, 秦振华, 姚仰平, 等. UH模型切线刚度矩阵对称化及其应用[J]. 力学学报, 2011, 43(6): 1186-1190. (LUO Ting, QIN Zhen-hua, YAO Yang-ping, et al. Symmetrization and applications of tangent stiffness matrix for UH model[J]. Chinese Journal of Theoretical and Mechanics, 2011, 43(6): 1186-1190. (in Chinese))
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出版历程
  • 收稿日期:  2017-08-01
  • 发布日期:  2017-12-19

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