PRAGMATIC DAMAGE CONSTITUTIVE MODEL FOR CONCRETE. Ⅰ: THEORETICAL FRAMEWORK
Starting from the energy release rate based elastoplastic damage model for concrete, the simplified two-dimensional damage model is proposed in the present paper for the analysis and design of the RC structures. Firstly, the framework of the elastoplastic damage model is briefly reviewed in this paper. And the concept of the damage release rate is therefore established. Then by introducing the damage consistent condition, the expressions of the energy equivalent are developed to bridge the gap between the 1-D and the 2-D damage evolutions. To improve the practicability of the present damage model, the matrix representation of the twodimensional formulations are developed based on the abstract tensor damage representations. The 1-D damage evolution function is developed by introducing the Manders experiential equation. The proposed model provides a practical way for the analysis and design of the concrete structures, based on which the structural design and analysis will be improved. The application of the present model to the engineering structures will be discussed in part Ⅱ and Ⅲ of this paper series.
pragmatic constitutive model damage model concrete energy equivalent strain
Jie Li Xiao-Dan Ren Sha-Jie Zeng Jun-Ming Zhou
School of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P.R. China
国际会议
广州
英文
1-7
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）