Research Article

Ductility and Strength Reduction Factors for Degrading Structures Considering Cumulative Damage

Table 1

Hysteretic behavior models under consideration.

Hysteretic modelPostyielding
stiffness (%)
(strength degradation) (stiffness degradation) Description

EP0009Nondegrading EP model
B5D1050.3210.1527.5Strength degradation and low stiffness degradation typical of steel structures
B5D3050.3210.5155.6Strength degradation and moderate to large stiffness degradation typical of reinforced concrete structures