PRAGMATIC DAMAGE CONSTITUTIVE MODEL FOR CONCRETE. Ⅲ: APPLICATION TO SHEAR WALL
The simulations of the shear wall elements are conducted in the present paper to investigate the multi dimensional performance of the damage model proposed in the first paper of this paper series. Two types of RC shear walls, e.g. the short wall and the high wall, are analyzed in this paper. Based on the UMAT tools of the finite element software ABAQUS, the damage model is firstly implemented for the nonlinear structural analysis. Then the elaborate finite element models for the shear walls are developed. The concrete is modeled with the plane stress element. And the reinforced lattice, which is simulated using the bar element, is embedded into the concrete platen. To improve the efficiency, the bonding between concrete and reinforcement isnt considered in the simulation. Hence the concrete solid and the reinforcement lattice bear the same displacement distribution. The tension stiffening is carefully considered in the simulation of the tall shear wall. That is to say, the descending part of the stressstrain curve of concrete under tension is smoothed due to the longitude reinforcement. On the other hand, the tension-compression softening, which has been already considered in the damage model, dominates the behaviors of the short shear wall. The agreement between the simulated results and the experimental data indicated the validation of the proposed damage model.
concrete nonlinear analysis damage shear walls
Jie Li Jun-Ming Zhou Xiao-Dan Ren Sha-Jie Zeng
School of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, P.R. China
国际会议
广州
英文
467-473
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）