抄録
This paper presents an estimating method for maximum responses of loads and displacements for repaired columns by degraded stiffness method. Proposed method is based on the correlated stiffness ratio between the column stiffness at the first yielding of longitudinal steels and that the estimated unloading stiffness of damaged last cycles. Degraded stiffness ratio 0.64 was obtained by the tests of R/C columns used in this paper. From comparisons between experimental results and analysis, it is shown that the proposed analytical method is applicable to estimating the load∼displacement relationships of repaired columns.
