강판 휨보강된 RC보의 박리하중산정에 관한 연구 = Prediction of Separation Load of RC Beams Strengthened with Steel Plate

다국어 초록 (Multilingual Abstract)

Recently, the strengthening of structures is of great concern due to the increase of loadings and the degradation of structures with time. The steel-plate strengthening has been widely used due to its reliable increase of stiffness and durability. However, the analysis and design method for plate strengthening of RC beams is not well established yet. The purpose of present paper is, therefore, to analyze the failure mechanism and failure behavior of strengthened RC beams and then purpose a reasonable method for the calculation of failure for separating load for those beams.
The influence of length and thickness of steel plates on the failure behavior of beam is thoroughly studied and the inconsistency of existing theory is clarified. Roberts theory gives different results from experimental data.
The proposed theory, which was obtained fro the modification of existing theory, predicts relatively well the preparation loads of strengthening RC beams, and may be efficiently used in the strengthening analysis design of RC beams.