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

Table 2

The values of parameter α and parameter β for specimens R1 to R18.

No.	α	β
R1	0.833	0.486
R2	0.910	0.148
R3	0.932	0.093
R4	0.641	0.174
R5	0.876	0.094
R6	0.924	0.074
R7	0.620	0.160
R8	0.838	0.080
R9	0.902	0.071
R10	0.660	0.234
R11	0.842	0.099
R12	0.894	0.108
R13	0.596	0.608
R14	0.864	0.121
R15	0.910	0.126
R16	0.551	0.263
R17	0.768	0.239
R18	0.901	0.153