Research on the Estimation Method of the Stiffness Degeneration Index of Reinforced Concrete Members

<div>Correlation between <i>D</i><sub>K,<i>k</i></sub> and different parameters. (a) Peak displacement occurs at the front of the displacement history. (b) Peak displacement occurs at the end of the displacement history.</div>

Advances in Civil Engineering

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Figure 19

Figure 19: Research on the Estimation Method of the Stiffness Degeneration Index of Reinforced Concrete Members 