Experiment on Natural Frequency Change of Reinforced Concrete Members under Low Cycle Loading

Figure 11

Natural frequency-change curves. (a) Z-2, Z-5, Z-8. (b) J-2, J-5, J-8. (c) M-2, M-5, M-8. (d) Z-1, Z-4, Z-7. (e) J-1, J-4, J-7. (f) M-1, M-4, M-7. (g) Z-3, Z-6, Z-9. (h) J-3, J-6, J-9. (i) M-3, M-6, M-9.

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