Repair and Strengthening of Reinforced Concrete Slab-Column Connections

Author(s):	Widianto Oguzhan Bayrak James Jirsa
Medium:	conference paper
Language(s):
Conference:	17th IABSE Congress, Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure, Chicago, September 17-19, 2008
Published in:	Creating and Renewing Urban Structures – Tall Buildings, Bridges and Infrastructure
Abstract:	Seven 2/3-scale interior slab-column connections were tested to quantify the effects of earthquake damage, and the efficiency of various rehabilitation techniques on repairing seismic damaged slabcolumn connections and improving the two-way shear strength of deficient connections. Three alternatives for rehabilitating slab-column connections were experimentally evaluated: (i) installation of steel collars, (ii) installation of external Carbon Fiber Reinforced Polymers (CFRP) stirrups, and (iii) application of well-anchored CFRP sheets. All three techniques increased the connection strength and improved the residual capacity after punching failure.