Evaluation of Bent Caps in Reinforced Concrete Deck Girder Bridges, Part 1; Final rept

摘要

This report describes research conducted to enable evaluation of existing vintage bent cap beams in reinforced concrete deck girder bridges. The report is organized into two parts: (1) flexural anchorage capacity response and prediction of reduced development length due to beneficial column axial compression and (2) structural performance of bent cap systems and their analytical evaluation. Each of these parts including descriptions of the experimental specimens and results of analytical studies is described separately. The research results from both studies are combined and used in an example to demonstrate the rating of an actual 1950s vintage RCDG bent cap beam for continuous and single trip permit loads.