MODELING ERROR OF STRENGTH OF SHORT REINFORCED CONCRETE COLUMNS

This study conducted probabilistic analyses of the modeling errors of several selected strength prediction models for short reinforced concrete (RC) columns. The selected strength models included the rectangular stress block model and the stress-strain relation-based theoretical model. A relatively large amount of test data on RC columns was collected from the literature, and the test results were compared with the predicted ones obtained from different strength models. Both normal- and high-strength concrete columns were studied. The dependency of the modeling errors on concrete compressive strength and the load eccentricity was investigated. Probabilistic analyses of the modeling errors were carried out by using the pseudolikelihood estimation method. Sets of probabilistic models of the modeling errors by considering different analysis approaches are suggested for short RC columns.