Interfacial stresses in beams strengthened with bonded prestressed plates

Many studies exist that address beams retrofitted with fiber-reinforced plastic (FRP) or steel plates; however, only a few used prestressed plates for strengthening. Basically, the governing equations of beams strengthened with prestressed plates are identical to the ones strengthened by non-prestressed plates. Nonetheless, when a prestressed plate is used, there are additional terms that should be considered in the analysis. This paper discusses the existing method of considering those additional terms and suggests new formulations.