Title:
Three-Dimensional Fiber-Reinforced Plastic Grating Cages
for Concrete Beams: A Pilot Study
Author(s):
Lawrence C. Bank, Yehoshua Frostig and Aviad Shapira
Publication:
Structural Journal
Volume:
94
Issue:
6
Appears on pages(s):
643-652
Keywords:
analytical models; composite materials; concrete beams; con-struction
practice; experimental study; fiber reinforced plastics; non-metal-lic
reinforcement; structural behavior; three-dimensional reinforcement;
truss model.
DOI:
10.14359/9724
Date:
11/1/1997
Abstract:
An experimental and analytical study was conducted to investigate the fea-sibility of developing three-dimensional fiber-reinforced plastic (FRP) grating cages to reinforce concrete members. Experimental FRP cages, fabricated from of-the-shelf commercially manufactured pultruded FRP profiles, were used to reinforce three concrete beams which were tested to failure. The performance of the FRP grating cage reinforced beams was compared with that of a control beam reinforced with conventional steel rebars. The results of the testing are given and a detailed analysis of the failure modes of the FRP reinforced beams is provided. A simplified analyt-ical model is proposed to calculate the failure load of the beams. A truss model is used to predict deflection at failure. Predictions of the proposed models agree well with the experimental data. The construction practice potential of using the FRP grating cages is discussed. The pilot study indicates that the future development of FRP grating cages for concrete rein-forcement would appear to be warranted.