Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

Abstract

A substantial amount of work was carried out on the use of fiber-reinforced polymer (FRP) in reinforcing concrete structural elements, which demonstrated considerable inelasticity or deformity through monotonous and fatigue loads. Even so, the action of FRP bars in FRP-RC columns and frame structures has not yet been studied during reversed cyclic loading. In this research, reversed cyclic loading was conducted on three beam-column joint models using the finite element method with ANSYS software. The first model was for a joint designed with steel rebar for both the longitudinal reinforcement and stirrups. Glass fiber reinforced polymer (GFRP) rebar was used to reinforced the second joint model for both longitudinal reinforcement and steel stirrups, and the third joint model was designed with hybrid steel/GFRP reinforcement for the longitudinal reinforcement and steel stirrups. The performance of the three models under reversed cyclic loading, such as load vs. story drift and energy dissipation capacity, were compared. The GFRP-reinforced model displayed a predominantly elastic activity up to failure. Although its energy dissipation was weak, its performance in terms of total storey drift demand was satisfactory.

Experimental and numerical investigations of the flexural behaviour ‎of Green - Ultra High Performance Fiber Reinforced Concrete ‎beams under repeated loads

“…numerical simulation was conducted to model the G-UHPFRC beams to verify the tested beams' experimental findings. A three-dimensional (3D) Finite Element Model (FEM) was constructed by ANSYS 2022R22 [33].…”

Efficiency of shape memory alloy seismic restrainers for several conditions of bridge joints

“…Many studies have modeled the cyclic loading on several structural elements using different software applications such as ABAQUS finite element code [21,22,23], ANSYS finite element code [24,25,26,27,28], or other control algorithms [29,30]. In this study, the equations of motion are solved numerically using step-by-step integration of Newmark's method [31], adopting linear variation of acceleration over a small time interval of Δt = 0.001.…”

Review of the Structural Performance of Beams and Beam–Column Joints with Openings

“…An opening is considered small if it allows the beam to continue behaving like a conventional beam. Conversely, if the beam's typical behavior is disrupted due to an opening, that opening is categorized as large [9].…”

“…Mansur and Tan mentioned in their research that the classification of a small or large should be based on the structural response of the beam [6][7][8] is considered small if it allows the beam to continue behaving like a conven Conversely, if the beam's typical behavior is disrupted due to an opening, th categorized as large [9].…”

“…When it comes to shear forces, they can typically be calculated using Equation (3). While the design condition depends on known forces-usually comparable to those found in standard reinforced concrete beams and slabs-it is important to note that the ACI-318 [9] guidelines specify that the effects of axial forces in the chord members need to be integrated into the design process. This ensures that all structural considerations are adequately accounted for, leading to a more robust and reliable structure.…”