高级搜索

    基于UH模型的土体变形局部化分析

    胡晶, 姚仰平, 罗汀

    胡晶, 姚仰平, 罗汀. 基于UH模型的土体变形局部化分析[J]. 岩土工程学报, 2015, 37(zk1): 94-98. DOI: 10.11779/CJGE2015S1019
    引用本文: 胡晶, 姚仰平, 罗汀. 基于UH模型的土体变形局部化分析[J]. 岩土工程学报, 2015, 37(zk1): 94-98. DOI: 10.11779/CJGE2015S1019
    shu
    HU Jing, YAO Yang-ping, LUO Ting. Localization of soil deformation depending on UH model[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 94-98. DOI: 10.11779/CJGE2015S1019
    Citation: HU Jing, YAO Yang-ping, LUO Ting. Localization of soil deformation depending on UH model[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(zk1): 94-98. DOI: 10.11779/CJGE2015S1019
    shu

    基于UH模型的土体变形局部化分析  English Version

    • 北京航空航天大学交通科学与工程学院,北京 100191

    基金项目: 国家重点基础研究发展计划项目（“973”计划）; （2014CB047001）; 国家自然科学基金项目（11272031）; 北京市自然; 科学基金项目（8132042）
    详细信息
      作者简介:

      胡 晶(1989- ),男,博士研究生,主要从事岩土工程方面的研究。

      通讯作者:

      姚仰平

    Localization of soil deformation depending on UH model

    • School of Transportation Science and Engineering Beihang University, Beijing 100191, China

    摘要

      摘要
    • 摘要: 应变局部化现象广泛地存在于超固结土和砂土的室内及现场试验中。当土体发生破坏时,土体变形往往集中在狭窄的带状区域,并且破坏面上的强度并非同时发挥。超固结度、围压、摩擦角、温度及加载应变率等因素的改变均可以使土体强度提高,但上述部分因素在提高土体强度的同时却可能对土体的稳定性产生不利影响,导致土体更易发生局部化破坏。因而基于UH模型（统一硬化模型）,采用平面应变下的分叉理论解对土体局部化问题进行分叉分析,探究了超固结度、围压、临界状态应力比、温度及加载应变率对分叉应变影响,并对所得结果进行分析讨论。此外,通过有限差分方法在平面应变条件下对局部化现象进行数值模拟,上述影响因素的分析结果与理论解相一致。
      Abstract: The phenomenon of strain localization widely exists in both laboratory or field tests on over-consolidated clay or sand. The deformation of soils when failure occurs, often localizes in a narrow zone, and the strength of the failure plane cannot be reached at the same time. The overconsolidation ratio, mean pressure, friction angle, temperature and strain rate are the main factors to increase the strength of soils. However, some factors may bring negative influence on soil stablity while increasing the strength of soils. Thus, based on the UH model (unified hardening model), the theoretical solution is used to analyze the phenomenon of bifurcation under plain strain. The impacts of the over-consolidation ratio, mean pressure, critical state ratio, temperature and stain rate on bifurcation strain are systematically studied and further discussed. Same conclusions are drawn in the numerical simulations of stain localization by using the finite differential method under the same condition of plain strain.
      • HTML全文
      • 参考文献(22)
    • [1] HILL R. A general theory of uniqueness and stability in elastic-plastic solids[J]. Journal of the Mechanics and Physics of Solids, 1958, 6(3): 236-249.
      [2] RUDNICKI J W, RICE J R. Conditions for the localization of deformation in pressure-sensitive dilatant materials[J]. Journal of the Mechanics and Physics of Solids, 1975, 23(6): 371-394.
      [3] OTTOSEN N S, RUNESSON K. Properties of discontinuous bifurcation solutions in elasto-plasticity[J]. International Journal of Solids and Structures, 1991, 27(4): 401-421.
      [4] 钱建固, 黄茂松. 土体变形分叉的非共轴理论[J]. 岩土工程学报, 2004, 26(6): 777-781. (QIAN Jian-gu, HUANG Mao-song. Non-coaxiality for deformation bifurcation in soils[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(6): 777-781. (in Chinese))
      [5] 吕玺琳, 黄茂松, 钱建固. 基于非共轴本构模型的砂土真三轴试验分叉分析[J]. 岩土工程学报, 2008, 30(5): 646-651. (LÜ Xi-lin, HUANG Mao-song, QIAN Jian-gu. Bifurcation analysis in true triaxial tests on sands based on non-coaxial elasto-plasticity model[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(5): 646-651. (in Chinese))
      [6] 黄茂松, 扈 萍, 钱建固. 基于材料状态相关砂土临界状态理论的应变局部化分析[J]. 岩土工程学报, 2008, 30(8): 1133-1139. (HUANG Mao-song, HU Ping, QIAN Jian-gu. Strain localization of sand based on a state-dependent critical state model[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(8): 1133-1139. (in Chinese))
      [7] 甄文战, 孙德安, 陈瑶瑶. 三维应力状态下砂的临界状态本构模型分叉分析[J]. 岩土力学, 2011, 32(9): 2663-2668. (ZHEN Wen-zhan, SUN De-an, Chen Yao-yao. Analysis of bifurcation by a critical state model for sands under three-dimensional stress states[J]. Rock and Soil Mechanics, 2011, 32(9): 2663-2668. (in Chinese))
      [8] 孙德安, 陈立文. 不同应力路径下超固结黏土分叉分析[J]. 岩土工程学报, 2011, 33(9): 1313-1319. (SUN De-an, CHEN Li-wen. Bifurcation analysis of over-consolidated clays under different stress paths[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(9): 1313-1319. (in Chinese))
      [9] 蔡正银, 李相菘. 取决于材料状态的变形局部化现象[J]. 岩石力学与工程学报, 2004, 23(4): 533-538. (CAI Zheng-yin, LI Xiang-song. State-dependent strain loacalization[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(4): 533-538. (in Chinese))
      [10] 黄茂松, 钱建固. 平面应变条件下饱和土体分叉后的力学性状[J]. 工程力学, 2005, 22(1): 48-53. (HUANG Mao-song, QIAN Jian-gu. Post-bifurcation response of saturated soils under plne strain condition[J]. Engineering Mechanics, 2005, 22(1): 48-53. (in Chinese))
      [11] 孙德安, 甄文战. 不同应力路径下剪切带的数值模拟[J]. 岩土力学, 2010, 31(7): 2253-2258. (SUN De-an, ZHEN Wen-zhan. Numerical simulations of shear bands along different stress paths[J]. Rock and Soil Mechanics, 2010, 31(7): 2253-2258. (in Chinese))
      [12] 杜修力, 侯世伟, 路德春, 等. 梯度塑性理论的计算方法与应用[J]. 岩土工程学报, 2012, 34(6): 1094-1101. (DU Xiu-li, HOU Shi-wei, LU De-chun, et al. Application of gradient plastic theory based on FEPG platform[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(6): 1094-1101. (in Chinese))
      [13] 喻葭临, 于玉贞, 张丙印, 等. 土坡中剪切带形成过程的数值模拟[J]. 工程力学, 2012, 29(2): 165-171. (YU Jia-lin, YU Yu-zhen, ZHANG Bing-yin, et al. Numerical simulation of the evolution of shear band in soil slope[J]. Engineering Mechanics, 2012, 29(2): 165-171. (in Chinese)
      [14] YAO Y P, HOU W, ZHOU A N. UH model: three- dimensional unified hardening model for overconsolidated clays[J]. Géotechnique, 2009, 59(5): 451-469.
      [15] 姚仰平, 李自强, 侯 伟, 等. 基于改进伏斯列夫线的超固结土本构模型[J]. 水利学报, 2009, 39(11): 1244-1250. (YAO Yang-ping, LI Zi-qiang, HOU Wei, et al. Constitutive model of over-consolidated clay based on improved Hvorslev envelope[J]. Journal of Hydraulic Engineering, 2009, 39(11): 1244-1250. (in Chinese))
      [16] YAO Y P, YANG Y F, NIU L. UH model considering temperature effects[J]. Science China Technological Sciences, 2011, 54(1): 190-202.
      [17] YAO Y P, KONG L M, HU J. An elastic-viscous-plastic model for overconsolidated clays[J]. Science China Technological Sciences, 2013, 56(2): 441-457.
      [18] YAO Y P, CUI W J, WANG N D. Three-dimensional dissipative stress space considering yield behavior in deviatoric plane[J]. Science China Technological Sciences, 2013, 56(8): 1999-2009.
      [19] YAO Y P, WANG N D. Transformed stress method for generalizing soil constitutive models[J]. Journal of Engineering Mechanics, 2014, 140(3): 614-629.
      [20] LUO T, QIN Z, FENG X, et al. A symmetrisation method for non-associated unified hardening model[J]. Computers and Geotechnics, 2013, 52: 38-45.
      [21] ZHANG S, LENG W, ZHANG F, et al. A simple thermo-elastoplastic model for geomaterials[J]. International Journal of Plasticity, 2012, 34: 93-113.
      [22] ERIKSSON L G. Temperature effects on consolidation properties of sulphide clays[C]// Proceedings of the 12th International Conference on Soil Mechanics and Foundation Engineering. Rio de Janeiro, 1989: 2087-2090.
      • 相关文章
      • 施引文献
    • 资源附件(0)
    计量
    • 文章访问数: 
    • HTML全文浏览量:  0
    • PDF下载量: 
    • 被引次数: 0
    出版历程
    • 收稿日期:  2015-03-25
    • 发布日期:  2015-07-24

    目录

    摘要
    HTML全文
      参考文献(22)
      相关文章
      施引文献
      资源附件(0)

      /

      返回文章
      返回
      网站版权 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
      编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn