Study on Anchor Properties of Mechanical Anchor using Nut on Reinforcing Bar End

Abstract

The purpose of this study is the development of an RC joint structure for connecting precast PC slabs used for replacement of the deteriorated RC slabs of a steel girder bridge, wherein the anchor length of the reinforcing bar in the bridge span direction is shortened by using mechanical anchorage with a nut at an end of the bar. The applicability of that joint to actual bridge structures has already been confirmed by the moving wheel loading test. In this paper, the pull-out test is conducted on reinforcing bars with nuts at their ends to clarify the anchor properties, and the applicability of the existing bond-slip-strain relationship considering the behavior of the nut and the reduction of the effect of strain of reinforcing bar is confirmed.