Experimental Study on Reinforcement Effect of Post-Installed Shear Reinforcement on a Reinforced Concrete Column

Abstract

The purpose of this study is to develop a reinforcement method for improving shear strength, targeting existing reinforced concrete piers in locations where the application of conventional seismic reinforcement methods is difficult.

Although a post-installed shear reinforcement method has been developed for underground structures whose backs are in contact with the ground, which allows reinforcement from only one side of the member owing to structural constraints, there have been few cases of verification of this method for reinforced concrete supporting beam of highway bridges until now.

A horizontal positive and negative alternating box loading test was conducted on an RC column specimen that simulated a reinforced concrete pier. The reinforcement effect of post-installed shear reinforcement rebar was investigated based on the deformation characteristics and damage status. While the post-installed shear reinforcement rebar was observed to have a shear reinforcement effect in the RC column specimen, no reinforcement effect could be confirmed in terms of deformation performance.