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基于扰动状态概念硬化参量的结构性黏土边界面模型

杨杰, 尹振宇, 黄宏伟, 金银富, 张冬梅

杨杰, 尹振宇, 黄宏伟, 金银富, 张冬梅. 基于扰动状态概念硬化参量的结构性黏土边界面模型[J]. 岩土工程学报, 2017, 39(3): 554-561. DOI: 10.11779/CJGE201703021
引用本文: 杨杰, 尹振宇, 黄宏伟, 金银富, 张冬梅. 基于扰动状态概念硬化参量的结构性黏土边界面模型[J]. 岩土工程学报, 2017, 39(3): 554-561. DOI: 10.11779/CJGE201703021
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YANG Jie, YIN Zhen-yu, HUANG Hong-wei, JIN Yin-fu, ZHANG Dong-mei. Bounding surface plasticity model for structured clays using disturbed state concept-based hardening variables[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(3): 554-561. DOI: 10.11779/CJGE201703021
Citation: YANG Jie, YIN Zhen-yu, HUANG Hong-wei, JIN Yin-fu, ZHANG Dong-mei. Bounding surface plasticity model for structured clays using disturbed state concept-based hardening variables[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(3): 554-561. DOI: 10.11779/CJGE201703021
shu

基于扰动状态概念硬化参量的结构性黏土边界面模型  English Version

  • 1. 同济大学岩土及地下工程教育部重点实验室,上海 200092;
    2. 同济大学地下建筑与工程系,上海 200092;
    3. 南特中央理工大学,南特 法国 44300

基金项目: 国家自然科学基金项目（41372285,51579179）; 国家重点基础研究发展计划（“973”计划）项目（2011CB013800）
详细信息
    作者简介:

    杨 杰(1990- ),男,硕士研究生,主要从事岩土本构模型及岩土工程风险分析等方面研究。E-mail: jayyang012008@live.com。

    通讯作者:

    尹振宇，E-mail：zhenyu.yin@gmail.com

Bounding surface plasticity model for structured clays using disturbed state concept-based hardening variables

  • 1. Key Laboratory of Geotechnical and Underground Engineering of Ministrey of Education, Tongji University, Shanghai 200092, China;
    2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China;
    3. Ecole Centrale de Nantes, Nantes 44300, France

摘要

    摘要
  • 摘要: 在临界状态理论和边界面模型的框架内,引入结构性扰动对弹性变形、结构性屈服面大小、胶结吸力和屈服面各向异性的影响,建立一个基于扰动状态概念硬化参量的结构性黏土边界面模型。首先,通过定义3个结构扰动度Rc,Rb和Rα来定量反映塑性变形对结构性黏土的结构性屈服面、胶结吸力和屈服面各向异性的扰动程度,并对弹性特性进行各向异性和结构性影响的修正。然后,通过对天然沉积上海黏土和Vallericca硬黏土的三轴不排水剪切试验和一维固结压缩试验的模拟验证模型的预测能力。最后,通过模型与有限差分法相结合,以简单的平面应变试验模拟为例,展示模型能够描述结构扰动度的变化及其在土体中分布的模拟能力。
    Abstract: Under the framework of bounding surface plasticity and critical state concept, by introducing the disturbed state concept for hardening variables of elastic behavior, structured yield surface, structured bonding adhesive stress and surface anisotropy, an elastoplastic model for structured clays is proposed. First, three structural disturbance degrees are defined to describe the disturbances of soils due to plastic strains to the size of yield surface, the adhesive stress and the yield surface anisotropy. The elastic law is also enhanced by considering anisotropy and disturbance. The model is then used to simulate the oedometer tests and undrained triaxial compression tests on two typical structured clays, Shanghai clay and Vallericca stiff clay. Finally, implementing the proposed model into a finite difference code as a user defined model, a biaxial shearing test is carried out to show the model ability in describing the development of structural disturbance degrees and its distributions in soils caused by plastic straining.
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    • 参考文献(32)
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出版历程
  • 收稿日期:  2015-12-05
  • 发布日期:  2017-04-24

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