Performance of slab-column connections of flat slabs strengthened with carbon fiber reinforced polymers

摘要

Retrofitting of slab-column connections has become a crucial concern as they are highly Received 16 May 2019 vulnerable to fail in punching shear failure. External strengthening is practically feasible Received in revised form 29 July 2019 rather than the post-installation of shear reinforcement in deteriorated slab-column Accepted 15 August 2019 connections. Hence, the behavior of medium scale slab-column junctions strengthened with alternative arrangements of Carbon Fiber Reinforced Polymer (CFRP) was studied. Numerical models were also developed to analyze bond behavior. The model predicted External strengthening performances are in good agreement with the test results. The maximum average punching Numerical modeling shear enhancement of 46% was observed from the specimens with CFRP plates attached to Punching shear enhancement the tension face of the specimens with steel end anchors. Slab/column interface ? 2019 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).