A Experimental Study on Shear Performance of Seismic Retrofitting Method Using Precast Panel and High Strength Fiber Reinforced Mortar

Abstract

The authors developed a seismic retrofitting method using precast panels and high strength fiber reinforced mortar for the purpose of construction labor saving. There are few cases of the use of high strength fiber reinforced mortar to increase seismic resistance, and the shear failure mechanism when such method is used was not clear. This paper describes an experimental study that was carried out with a retrofitting beam specimen to clarify the shear failure mechanism when this method is used. As a result, it was confirmed that the developed seismic retrofitting method improved the shear strength of the beam specimen, and the mode of fracture was found to be shear fracture due to yielding of the connecting steel used for panel assembly. The influence of each member of the reinforcement on shear strength was also clarified.