Issue 70

H. A. Mohamed et alii, Frattura ed Integrità Strutturale, 70 (2024) 286-309; DOI: 10.3221/IGF-ESIS.70.17

[20] Shin, D.-H., Kim, H.-J. (2020). Cyclic response of rectangular RC columns retrofitted by hybrid FRP sheets. Structures., 28 (2), pp. 697-712. DOI: 10.1016/j.istruc.2020.09.016. [21] ACI (2013). Guide for Testing Reinforced Concrete Structural Elements under Slowly Applied Simulated Seismic Loads, ACI 374, American Concrete Institute, Farmington Hills, Michigan, U.S.A. [22] Priestley, M.. Calvi, G., Kowalsky, M. (2007). Displacement-based Seismic Design of Structures. Pavia, IUSS Press, Italy. DOI: 10.1193/1.2932170. [23] Gulkan, P., and Sozen, M. A. (1974). Inelastic responses of reinforced concrete structures to earthquake motions. J. Am. Concr. Inst., 71 (12), pp. 604 - 610. DOI: 10.14359/7110. [24] Midorikawa, M., Hiraishi, H., Okawa, I., Iiba, M., Teshigawara, M., and Isoda, H. (2000). Development of seismic performance evaluation procedures in Building Code of Japan. Proc., 12th World Conf. on Earthquake Engineering, Silverstream, New Zealand. [25] Kalman Sipos, T., Jelec, K. and Milicevic, I. (2023). Seismic performance of rubberized concrete in structural applications. Proceedings of the 2nd Croatian Conference on Earthquake Engineering., 2CroCEE. DOI: 10.5592/CO/2CroCEE.2023.119.

N OMENCLATURE

Fcu Ftu

Compressive strength

Tensile strength

Pu ∆ y ∆ u DI

Ultimate load

Yield displacement

Ultimate displacement

Ductility index

λ

Buckling coefficient Displacement ductility

μ

ξ eq

Equivalent viscous damping Initial elastic viscous damping Hysteretic viscous damping

ξ s

ξ hys

309