Design Aid for Shear Strengthening of Reinforced Concrete T-Joints Using CarbonFiber Reinforced Plastic Composites. Earthquake Research Program

摘要

The research presented in the present work focuses on the shear strengthening ofbeam column joints using carbon fiber composites, a material considered in seismic retrofit in recent years more than any other new material. The design and field application research on reinforced concrete cap beam-column joints includes analytical investigations using pushover analysis; design of carbon fiber layout, experimental tests and field applications. Several beam column joints have been tested recently with design variables as the type of composite system fiber orientation and the width of carbon fiber sheets. The surface preparation has been found to be critical for the bond between concrete and composite material, which is the most important factor in joint shear strengthening. The final goal of this research is to develop design aids for retrofitting reinforced concrete beam column joints.