An Investigation of Compression Bearing Capacity of Concrete-Filled Rectangular Stainless Steel Tubular Columns under Axial Load and Eccentric Axial Load

In order to study the compression bearing capacity of concrete-filled rectangular stainless steel tubular columns, influence tube thickness, relative eccentricity, and slenderness ratio on is analyzed, then calculation formula proposed. The results show that finite element model can effectively simulate capacity, mean calculations Nufem test Nuexp 0.985, variance 0.000621. eccentricity have a great load–displacement curves. thickness has little With increase in decreases. ratio, failure specimen gradually changes from plastic elastoplastic elastic failure. When same, if larger, increasing will be more effective improving capacity. smaller, for longitudinal stress distribution cross-section. are greater, compressive parts cross-section becomes tensile stress. proposed predict columns. theoretical 1.054, 0.0247.