Title: Performance Assessment of Shear-Critical Reinforced Concrete Frames

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Publication: CIA

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Date: 2/28/2011

Abstract:
Although modern design codes typically require concrete frame structures to be designed to be ductile and flexure-critical in their behaviour, many situations arise in practice where shear related mechanisms play a significant role in the response of structures. Advanced analytical tools that rigorously consider shear behaviour are required for a comprehensive and accurate assessment of the performance of such frames. However, the typical analysis tools currently available either ignore shear mechanisms altogether, employ opaque and overly-simplistic formulations, or are too complex requiring the selection of numerous parameters and supporting calculations prior to the analysis. Most neglect shear deformations by default. A research initiative was undertaken to develop a nonlinear analysis procedure for plane frames that accurately accounts for shear effects, but one that does not require extensive pre-selection of analysis options, material models and failure modes nor extensive supporting analyses or calculations prior to the analysis. This paper provides an overview of the procedure developed, applicable to frames consisting of beams, columns and shear walls subjected to static monotonic and reversed-cyclic loading conditions. Verification studies and applications are also discussed.