PSI - Issue 70

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

152

Table 6. Base shear and displacement at ultimate and yield point Base shear (kN)

Displacement (m)

Global ductility=ultimate displacement/yield displacement

%increase in global ductility

Ultimate point

Yield point

Ultimate point Yield point

Original structure 3926.7

2987.23

0.4459

0.122

3.66

2wrapping structure 4wrapping structure 6wrapping structure

3941.47

2969.1202

0.4458

0.118

3.78

3.28

3950.624

2978.5907

0.442

0.115

3.84

4.92

3959.113

2956.5341

0.4315

0.112

3.86

5.47

Conclusion 1. Base shear increases after wrapping the beam and column of a structure..The wrapping increases 0.2%, after 4 wrapping increases by 0.4%, and after 6 wrapping 0.6% increases. 2. The maximum lateral displacement of the RC frame significantly decreases due to the increased stiffness. 2 wrapping displacement decreased 1.6%, 4 wrapping decrease 3.34 % and 6 wrapping 5 % decrease. 3. The 2 wrapping time period decrease 1.07%. 4 wrapping 2.067% and 6 wrapping 3.141%. 4. Damping ratio increase after wrapping 2 wrapping damping ratio increase 3.5% , 4wrapping 6 % and 6 wrapping 8.05%. 5. The mode 1 , mode 2 and mode 3 time periods decrease after wrapping. The mode 1 after 2 wrapping decrease 1.486% , 4 wrapping 2.92% and 6 wrapping 4.24%. The mode 3 after 2 wrapping decrease 1.51%, after 4 wrapping 2.93% and 6 wrapping decrease 4.26%. 6. The ultimate point the base shear increase 2 wrapping increase 0.4%, 4 wrapping 0.61% and 6 wrapping 0.83%. 7. The yield point the base shear decrease after wrapping 2 wrapping decrease 0.61%, 4 wrapping 0.29% and 6 wrapping 1.027%. References Bahij, S., Omary, S., Steiner, V., Feugeas, F., & Faqiri, A. (2022). Strengthening reinforced concrete beams by using different types and methods of fiber-reinforced polymers: A critical review. Practice Periodical on Structural Design and Construction , 27 (4), 03122005. Moustafa, E. B., & Almitani, K. H. (2021). Detecting damage in carbon fibre composites using numerical analysis and vibration measurements. Latin American Journal of Solids and Structures , 18 , e362. Del Vecchio, C., Di Ludovico, M., Prota, A., & Manfredi, G. (2016). Modelling beam-column joints and FRP strengthening in the seismic performance assessment of RC existing frames. Composite Structures , 142 , 107-116. Allam, K., Mosallam, A. S., & Salama, M. A. (2019). Experimental evaluation of seismic performance of interior RC beam-column joints strengthened with FRP composites. Engineering Structures , 196 , 109308. Ronagh, H. R., & Eslami, A. (2013). Flexural retrofitting of RC buildings using GFRP/CFRP–A comparative study. Composites Part B: Engineering , 46 , 188-196. Daniel, D. M., & John, S. T. (2016). Pushover analysis of RC building. International Journal of Scientific & Engineering Research , 7 (10), 88-92. Yoshida, S., Yokozeki, T., Ogasawara, T., & Ogihara, S. (2007, December). Evaluation of nonlinear behavior of CfRP laminates in tension and compression. In 16th International Conference on Composite Materials and Evaluation, Tokyo, Japan (pp. 1-7). Osman, S. M., Aldabagh, S., Alam, M. S., & Sheikh, S. A. (2023). Performance-based seismic design of hybrid GFRP–steel reinforced concrete bridge columns. Journal of Composites for Construction , 27 (2), 04023011. Zheng, B. T., Gencturk, B., Aryan, H., Pan, X., Lopez, J., Rivera, J., ... & Alkhrdaji, T. (2024). Seismic Performance of Highly Eccentric Reinforced Concrete Beam–Column Joints. Journal of Structural Engineering , 150 (11), 04024161. Alhaddad, M. S., Binyahya, A. S., Alrubaidi, M., & Abadel, A. A. (2021). Seismic performance of RC buildings with Beam-Column joints upgraded using FRP laminates. Journal of King Saud University-Engineering Sciences , 33 (6), 386-395 Attari, N., Youcef, Y. S., & Amziane, S. (2019, August). Seismic performance of reinforced concrete beam–column joint strengthening by frp sheets. In Structures (Vol. 20, pp. 353-364). Elsevier. Arabzadeh, H., & Galal, K. (2017). Seismic collapse risk assessment and FRP retrofitting of RC coupled C-shaped core walls using the FEMA P695 methodology. Journal of Structural Engineering , 143 (9), 04017096. Hadigheh, S. A., & Maheri, M. R. (2009). Performance based seismic design of RC frames retrofitted with FRP composites. In Proceeding of the 1th International Conference on Concrete Technology .