- 基于统计损伤理论的混凝土双轴拉-压本构模型研究
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- 论文类型： 期刊论文
- 发表时间： 2022-06-29
- 发表刊物： 应用基础与工程科学学报
- 卷号： 23
- 期号： 5
- 页面范围： 873-885
- ISSN号： 1005-0930
- 摘要： The statistical damage constitutive model for concrete under biaxial
tensile and compressive stresses was proposed, based on the statistical
damage theory and the experimental phenomena. It considered two
meso-scale damage modes, rupture and yield. The evolution process of
damage was driven by the principal tensile and compressive strains. The
damage evolution process of concrete under complex stress state was
considered as the combination of uniaxial tension and uniaxial
compression, which were regarded as the two most fundamental failure
forms. The equivalent relations of micromechanical damage mechanisms
corresponding to the macroscopic tensile and compressive failure modes
were established, by introducing the concepts of equivalent transfer
tensile damage strain and the damage influence parameter. The results
show that it can accurately predict the constitutive behavior in the
uniform damage phase for concrete under biaxial tension and compression.
The damage mechanism was discussed from the view points of biaxial
strength, deformation properties and the failure form. - 备注： 新增回溯数据
