| 混凝土随机损伤本构模型研究新进展 |
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| 引用本文： | 余志武, 单智. 混凝土随机损伤本构模型研究新进展[J]. 工程力学, 2018, 35(8): 1-8,13. DOI: 10.6052/j.issn.1000-4750.2017.05.ST13 |
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| 作者姓名： | 余志武 单智 |
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| 作者单位： | 1.中南大学土木工程学院, 湖南, 长沙 410001;;2.中南大学高速铁路建造技术国家工程实验室, 湖南, 长沙 410001 |
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| 摘 要： | 综述了混凝土微观损伤机理与随机损伤本构模型研究现状，介绍了本课题组在混凝土随机损伤本构模型方面取得的研究进展：进行了考虑mode-II微裂缝的微观损伤机理分析，提出并验证了混凝土随机损伤本构模型——束-链模型，发展了测定多轴受压混凝土损伤变量的X-射线CT方法。最后，得到了相关研究结论。
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| 关 键 词： | 混凝土 本构模型 随机 损伤 纤维束模型 |
| 收稿时间： | 2017-05-24 |
| 修稿时间： | 2018-04-22 |
ADVANCES IN RESEARCHES ON STOCHASTIC DAMAGE MODELS OF CONCRETE |
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| YU Zhi-wu, SHAN Zhi. ADVANCES IN RESEARCHES ON STOCHASTIC DAMAGE MODELS OF CONCRETE[J]. Engineering Mechanics, 2018, 35(8): 1-8,13. DOI: 10.6052/j.issn.1000-4750.2017.05.ST13 |
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| Authors: | YU Zhi-wu SHAN Zhi |
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| Affiliation: | 1.School of Civil Engineering, Central South University, 68 South Shaoshan Road, Changsha, Hunan 410004, China;;2.National Engineering Laboratory for High-Speed Railway Construction, Central South University, Changsha, Hunan 410004, China |
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| Abstract: | The studies on the micro damage mechanism and stochastic damage model are reviewed. Furthermore, the advances in researches on the stochastic damage model of concrete by the team of authors are introduced as well. The micro damage mechanism analysis was obtained by taking into account mode-Ⅱ microcracks, the stochastic damage model (the fiber bundle-irreversible chain model) was proposed and verified by experiments, and an X-ray computed tomography method for the damage quantification of concrete under compression was developed. Additionally, some related conclusions are drawn. |
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| Keywords: | concrete constitutive relationship model stochastic damage fiber bundle-irreversible chain model |
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