Cyclic Behavior of Glass Fiber-Reinforced Polymer-Reinforced Concrete Exterior Beam-Column-Slab Connections

摘要

The effect of various factors on the contribution of slabs to the seismic performance of beam-column joints in steel-reinforced concrete (RC) frames has been extensively investigated. However, no research data is available on the behavior of beam-column slabs reinforced with alternative materials such as glass fiber-reinforced polymers (GFRPs). To fill this gap, two full-scale GFRP-RC exterior beam-column slabs were tested under reversal loading to investigate their seismic performance with a focus on the effect of lateral beams on the effective slab width. The results were compared with two previously tested beam-column specimens. Moreover, a series of finite element models were generated to determine the influence of lateral beams' size and slab thickness on the contribution of slabs. The results indicated that the contribution of cast-in-place slabs in the bending moment capacity of the main beams when the top fiber of the slab is in compression is insignificant.