Experimental Study on Ultimate Strength of Steel Tube Column Filled with Reactive Powder Concrete

Composite concrete Filled Tubular Steel (CFT) members, which have excellent deformability due to the well-known confined and constrained interaction between steel tube concrete, largely been utilized as bridge piers or columns in high-rise buildings, resulting increased strength decreased column size. This study examined experimental performance of filled with reactive powder (RPC) under axial compression. Three sets were used experiment, each variations shape (square, rectangular, circular), length-to-diameter ratio, compressive RPC. The first set consisted five columns, while second third had seven three different lengths (750 mm, 600 450 mm) two strengths (54 92 MPa). A new numerical model was developed calculate ultimate failure load by considering factors such yield steel, shape, ratio steel. validated comparing results obtained from experiments those predicted model, well designing equations various codes. showed that proposed accurately for types especially RPC, maintaining conservatism compared ACI, AISC, EN codes equations. Doi: 10.28991/CEJ-2023-09-06-04 Full Text: PDF