NUMERICAL ANALYSIS OF FRP REINFORCED FRAMES UNDER CYCLIC LOADING

Amer, Asmaa Sobhy; Abdel Kader, Hilal; Abdel-Razek, Luay; El-Sisi, Alaa El-Din

doi:10.21608/eijest.2021.60164.1045

NUMERICAL ANALYSIS OF FRP REINFORCED FRAMES UNDER CYCLIC LOADING

Document Type : Original Article

Authors

¹ Structural Engineering, Faculty of Engineering, Zagazig University, Zagazig, Egypt

² Structural engineering department, Faculty of engineering, Zagazig university, Zagazig, Egypt.

³ University of Missouri, Columbia, MO

10.21608/eijest.2021.60164.1045

Abstract

In this research, three models of beam-column joint have analyzed under reversed cyclic loading by finite element method using ANSYS software. The first model was designed with a steel-reinforced joint (longitudinal reinforcement and stirrups), the second model performed with (GFRP) -reinforced joint in longitudinal reinforcement only and the third model performed with (CFRP) -reinforced joint in longitudinal reinforcement only. The behaviour of the three models under reversed cyclic loading, their load-storey drift envelope relationship and energy dissipation capacity were compared. The GFRP-reinforced and CFRP-reinforced models displayed a predominantly elastic activity up to failure, although the energy dissipation for GFRP and CFRP models were low, its performance in terms of total storey drift demand was satisfactory. The GFRP reinforcement's low elasticity modulus caused a decrease in the overall stiffness of the model at the service stage, resulting in the obtaining of converging drift ratios and at the same time obtaining lower forces from its acting earthquake loading.

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