THE NONLINEAR FEM ANALYSIS ON THE CORRODED REINFORCEMENT CONCRETE BEAMS
The reinforcement in concrete beams will corrode for the carbonation of concrete at atmospheric environment. The load carrying capacity of the corroded reinforcement concrete beams decreases for the loss of the section area of the reinforcement, the decrease of the strength of the corroded reinforcement and the bond strength between the concrete and the corroded reinforcement. One nonlinear finite element program is finished for calculating the residual load carrying capacity of the corroded reinforcement concrete beams in this paper. In this program, the loss of the section area, the decrease of the yielding strength and the decrease of the bond strength of the corroded reinforcement beams are included. The crack width can also be obtained from this program. The result is also compared with that from the experimental study on the corroded and normal beams in order to evaluate the valid of this program. The results obtained from the program show that the residual load carrying capacity is 73％ of that of the normal R. C. beams and the maximum crack width is about 0.36mm, when the corrosion rate is 10％. Some proposals on repairing and strengthening of the corroded reinforcement concrete beams are also presented in this paper.
Nonlinear FEM corroded reinforcement R. C. beams load carrying capacity crack width
D. J. Shen S. X. Wu
Institute of Civil Engineering, Hohai University, Nanjing, China Research Institute of Structural En Institute of Civil Engineering, Hohai University, Nanjing, China
国际会议
上海
英文
293-297
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）