混凝土确定性及随机性损伤本构模型研究进展

发布时间：2018-02-08 12:22

本文关键词： 混凝土确定性损伤本构模型随机性损伤本构模型弹簧单元不可复变形　出处：《工程力学》2017年09期 　论文类型：期刊论文

【摘要】：混凝土损伤本构模型的建立对表征混凝土力学行为与认识其本质至关重要。从确定性与随机性两个层面梳理了国内外混凝土损伤本构模型的研究历史和最新进展情况,针对不同模型的损伤定义方式、损伤演化规律、损伤物理机制等进行探讨,通过对比分析总结了混凝土材料的非线性、随机性和动力荷载下的率敏感性等特征,提出发展混凝土损伤本构模型的关键问题,为建立更完善的混凝土损伤本构模型提供参考。
[Abstract]:The establishment of concrete damage constitutive model is very important to characterize the mechanical behavior of concrete and to understand its essence. The history and recent development of concrete damage constitutive model at home and abroad are summarized from the aspects of certainty and randomness. In this paper, the damage definition mode, damage evolution law and damage physical mechanism of different models are discussed. The characteristics of nonlinearity, randomness and rate sensitivity of concrete under dynamic load are summarized through comparative analysis. The key problems in the development of concrete damage constitutive model are put forward, which provides a reference for the establishment of more perfect concrete damage constitutive model.
【作者单位】：中南大学土木工程学院;中南大学高速铁路建造技术国家工程实验室;
【基金】：国家自然科学基金项目(51278469,U1434204)
【分类号】：TU528

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