混凝土损伤本构模型研究评述

现有混凝土本构关系主要是基于成熟的经典弹塑性模型所建立的,弹塑性模型在数学上较严格,但是与混凝土材料破坏机理不协调,各国学者针对混凝土这类特殊多相复合材料提出了很多基于不可逆热力学理论的损伤本构模型。系统综述了混凝土损伤本构研究的成果,在分析了各个有代表意义的混凝土损伤本构模型基础之上,对比研究了各个模型的特点及各自适用范围,通过总结前人成果,为损伤本构模型研究提供了思路。

A Review of Concrete Damage Constitutive Models

The existing constitutive models of concrete are mainly based on the framework of the classic elastic-plastic models which are rigorous on mathematics,but not coordinated with the failure mechanism of concrete.Researchers of different countries proposed various kinds of damage constitutive models based on the irreversible thermodynamics theory to describe the damage behavior of concrete.This paper presents a review of different models for concrete,analyzes the characteristics of each representative model and studies the scope of their application.On the basis of the review of existing concrete damage models,some new methods can be provided for further research on damage constitutive models.