An experimental study on elliptical concrete filled columns under axial compression

Numerical analysis and design of slender concrete-filled elliptical hollow section columns and beam-columns

“…A group of the experimental results [33] were not used for the model validation owing to some unexpected trends in some of the reported data. Measured values of material strength and member geometry including imperfections were applied in the models.…”

“…These studies provided a basis upon which design rules for steel EHS members have been formulated [28], including rules for compressive resistance [21], bending [23], flexural buckling [24] and shear [29]. In the context of concrete-filled elliptical hollow section (CFEHS) members, previous experimental studies include compression testing of stub columns [4,30,31], members in bending [32], concentrically-loaded slender columns [33] and eccentrically-loaded columns [34][35][36][37]. The behaviour of CFEHS columns in fire conditions was also examined by [35].…”

Ultimate strength capacity of a square hollow section filled with fibrous foamed concrete

“…Values of SI that are higher than 1.0 suggest a positive interaction between the steel tube and the concrete core, and good concrete confinement [17] SI is described as where N e is the experimental value of ultimate strength capacity of CFHS and the summation of the load-bearing capacity of the steel tube and core concrete, N u .…”

Study on Axial Compression Bearing Capacity of Reinforced Concrete Filled Steel Tube Members

“…After the concrete is casted, the specimen was cured for 12 hours in an environment with fixed temperature and humidity conditions. After the concrete was cured, the top steel plate was welded to the specimen (Jamaluddin et al [26]).  is the ratio of longitudinal reinforcement, s is the stirrup spacing.…”