CYCLICALLY LOADED GFRP RC MID-RISE WALLS: PARAMETRIC RESEARCH

Abstract

In this paper, nonlinear finite-element analysis (FEA) was handed to implement an in-depth examination on the behavior of concrete mid-rise walls reinforced with glass fiber reinforced polymer (GFRP) bars subjected to reversed cyclic loading while concurrently exposed to axial load. The FEA outcome was equated to the experimental outcomes of one GFRP-reinforced concrete mid-rise wall in-term of crack patterns, failure types and load–lateral displacement hysteretic response. A parametric research was then employed highlight the influence of longitudinal reinforcement ratio at wall boundary on diverse design features. It was displayed that the built model was steady and precisely simulated the experimentally stated behavior. The research also showed that while the boundary longitudinal reinforcement ratio had a remarkable effect on ultimate strength as well as the lateral stiffness, it slightly improved the energy dissipation capacity. Developing a technique with a noteworthy influence on energy dissipation that makes GFRP RC mid-rise walls competent to be used in strong seismic activity regions is indispensible. strength, drift capacity, stiffness, residual displacement as well as the energy dissipation capacity. Attending to this objective, two longitudinal reinforcement ratios were studied: 2.53% as well as 3.95%, along with the vertical web reinforcement ratio of 1.43% employed in GnoX. This was accomplished by substituting the vertical #3 GFRP bars with #4 in addition to #5 bars, in turn, whereas maintaining the unchanged horizontal web reinforcement ratio with the similar mechanical features. It should be distinguished that the reinforcement ratio was premeditated bearing in mind the boundary dimensions as 200mm × 200mm. For easiness of reference, the samplings were labeled as G3, G4, and G5, in that order.