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Accurate modeling of the complete stress-strain relationship of confined concrete is of vital importance in predicting the structural behavior of confined concrete columns under combined axial compression and bending. Although the axial stress-strain behavior of confined concrete under concentric loading is well established, the behavior under eccentric loading when axial and bending loads are combined...
This paper presents the results of an experimental study on the behavior of fiber reinforced polymer (FRP)–recycled aggregate concrete (RAC)–steel double-skin tubular columns (DSTCs) under concentric compression. Influences of the concrete strength, DSTC cross-sectional shape, and aggregate replacement ratio were experimentally investigated through the test of 24 hollow-core circular and square DSTCs...
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