PSI - Issue 70

Alok Kumar et al. / Procedia Structural Integrity 70 (2025) 145–152

151

Base shear increases after wrapping the beam and column. It increases the stiffness and changes dynamic properties. The DBE 2 wrapping base shear increases by 0.2%, after 4 wrapping increases by 0.4%, and after 6 wrapping 0.6% increase. The MCE 2 wrapping base shear increased by 0.13%, 4 wrapping increased by 0.25 %, and 6 wrapping by 0.37 % increase.

Base shear

3263.616

3259.921

3255.905

3251.743

0 2000 4000

2670.293

2659.062

2653.937

2664.114

original structure

2 wrapping

4 wrapping

6 wrapping

DBE MCE

base shear kN

Fig. 14. Result of Base shear

Time period

Damping ratio

0 0.5 1 1.5 2 Time period (second)

1.21 1.197 1.172 1.521 1.519 1.511 1.503 1.185

0 0.05 0.1 0.15 0.2 0.25

0.207 0.212 0.215

0.2

0.094

0.092

0.087 0.09

damping ratio

original structure

2 wrapping 4 wrapping 6 wrapping

DBE MCE

DBE MCE

Fig. 16 . Result of the Time period

Fig. 15. Result of Damping ratio

Spectral displacement

Spectral acceleration

0.182

0.18

0.2

0.178

0.176

0 0.1 0.2 0.3 0.4

0.096 spectral displacement (m ) 0.05 0.1 0.15

0.315 0.313 0.312 0.312

0.263 0.264 0.264 0.2 …

0.094

0.093

0.091

0

original structure

2 wrapping 4 wrapping 6 wrapping

Spectral acceleration (m/s2)

original structure

2 wrapping 4 wrapping 6 wrapping

DBE MCE

DBE

Fig. 17. Result of spectral acceleration Fig. 18. Result of spectral displacement The ultimate point represents the maximum base shear capacity of the building on the pushover curve. the ultimate point may not be the collapse point. The yield point on a pushover curve represents the transition from the elastic and inelastic behavior of the structure. It is not always directly visible on the curve. Especially for complex or non-linear structures but is essential for calculating ductility and understanding structure performance. The method used in yield point is the Bilinear Idealization method.