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    王忠涛

    • 教授     博士生导师   硕士生导师
    • 主要任职:科学技术研究院副院长兼科技发展研究院院长、人文社科研究院院长
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:科学技术研究院(科技合作与成果转化中心)
    • 学科:岩土工程
    • 办公地点:综合实验1号楼213室
    • 联系方式:Zhongtao@dlut.edu.cn
    • 电子邮箱:zhongtao@dlut.edu.cn

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    一种初始各向异性砂土本构模型的数值应用及试验验证

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    第一作者:罗强

    通讯作者:李晓磊,李方方,马可栓,王忠涛

    发表时间:2020-01-01

    发表刊物:Chinese Journal of Applied Mechanics

    卷号:37

    期号:5

    页面范围:2105-2111

    ISSN号:1000-4939

    关键字:"inherent anisotropy; sedimentary direction; constitutive model; numerical application; triaxial test"

    CN号:61-1112/O3

    摘要:Test model is performed basing on the capillary effect of sand, the sedimentary direction of sand particle is within the range of 0° to 90°. The sand model is performed with triaxial tests under medium confining pressure, and the test results show that the sedimentary direction has obvious influence on strength and deformation characteristic of sand, meanwhile, a fitting relation between sedimentary direction and deviatoric stress is suggested. Mohr-Coulomb yield criteria are amended with test results, and a constitutive model for inherent anisotropy sand is suggested and applied to numerical analysis. The triaxial test for dense sand is modeled numerically with the former constitutive model, the change of deviatoric stress, volume change and principal stress direction are studied and compared between numerical analysis and test, and the result show that numerical results agree well with the test results. The suggested constitutive model is applicable to the study of inherent anisotropy for sand.

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