Study on beam-column joints wrapped with woven glass fiber reinforced polymer composites
  Pranoy Roy and P. Sachithanantham
  In the analysis of reinforced concrete frames, the joints between columns and beams are generally assumed as rigid. In practice much attention is not given and the joint is usually neglected for specific design with attention being restricted to the provisions of sufficient anchorage for longitudinal reinforcement in beams. This is quite acceptable when the frame is not subjected to seismic loads. Many failures are reported in the past, which have been attributed to beam column joints. The poor design practice of beam column joint is compounded by the demand imposed due to the adjoining members in the event of mobilizing their inelastic capacities to dissipate seismic energy. This may be done by enhancing the properties of fiber reinforced polymer at these joints. An attempt is made in this paper to study the effect of glass fiber reinforced polymer wrapping on corner beam-column joint frames subjected to ultimate loads. The dimension of the framed specimens is 950mm x 950mm, with the cross sectional dimension of 100mm x 100mm. Six concrete specimens with adequate reinforcement is prepared and glass fiber reinforced polymer is wrapped in three layers at the corners of the beam column joint upto 1/3rd the length of specimen. M20 grade concrete is used for casting the specimens.