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不等向固结时混合土剪切行为的离散元分析

朱艳贵

朱艳贵. 不等向固结时混合土剪切行为的离散元分析[J]. 工业建筑, 2024, 54(3): 167-173. doi: 10.3724/j.gyjzG22062701
引用本文: 朱艳贵. 不等向固结时混合土剪切行为的离散元分析[J]. 工业建筑, 2024, 54(3): 167-173. doi: 10.3724/j.gyjzG22062701
ZHU Yangui. Discrete Element Method Analysis on Shear Responses of Mixed Soil During Anisotropic Consolidation[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(3): 167-173. doi: 10.3724/j.gyjzG22062701
Citation: ZHU Yangui. Discrete Element Method Analysis on Shear Responses of Mixed Soil During Anisotropic Consolidation[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(3): 167-173. doi: 10.3724/j.gyjzG22062701

不等向固结时混合土剪切行为的离散元分析

doi: 10.3724/j.gyjzG22062701
基金项目: 

国家自然科学基金项目(51809292); 2022KY35YB-05PT陕西省高速铁路地质路基创新团队中国国家铁路集团有限公司科技研究开发计划项目(P2021G047);中铁第一勘察设计院集团有限公司科研项目(2021KY85ZD(LSJT)-01)。

详细信息
    作者简介:

    朱艳贵,博士。电子信箱: zyg_csu@163.com

Discrete Element Method Analysis on Shear Responses of Mixed Soil During Anisotropic Consolidation

  • 摘要: 为探明初始应力比影响不同细颗粒含量密实混合土的宏观剪切行为的细观机制,采用离散元法研究混合土的宏细观剪切行为。混合土由球形细颗粒和真实角砾形状粗颗粒组成。结果表明:初始应力比增大可以使混合土的初始加载阶段内摩擦角和剪胀角增大。通过分析粗颗粒–粗颗粒、粗颗粒–细颗粒、细颗粒–细颗粒接触的贡献大小,发现初始应力比对混合土的工程分类基本无影响。混合土的初始加载阶段,剪切强度随着初始应力比的增大而增大,与颗粒间接触力增大密切相关。在混合土的初始加载阶段,随着初始应力比的增大,内摩擦角的增大可归因于接触、法向接触力、法向和切向枝向量的各向异性增大程度之和超过了切向接触力的各向异性的减小程度。
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出版历程
  • 收稿日期:  2022-06-27
  • 网络出版日期:  2024-05-29

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