Tests on plain and steel fiber concrete-filled stainless steel tubular columns: Fid-Bau Portal

Tests on plain and steel fiber concrete-filled stainless steel tubular columns

Tokgoz, Serkan

Abstract This paper reports the experimental behavior of plain and steel fiber concrete-filled stainless steel tubular columns under biaxial bending and axial compression. In the experimental study, the length-to-diameter ratios of the stainless steel tubes were 12, 15, and 20. The effects of the main test parameters of concrete compressive strength, cross-section, load eccentricity, steel fiber material and slenderness on the structural behavior of plain and steel fiber concrete-filled stainless steel tubular columns were examined. The ultimate strength capacities, load–deflection relations, and load–axial strain behavior were observed in the tests. The plain and steel fiber concrete-filled tube columns have been analyzed with a theoretical method based on the nonlinear behavior of the materials. The experimental and theoretical biaxial load–deflection diagrams have been obtained and compared in the study. The experimental results have exposed significant knowledge to describe the behavior of plain and steel fiber concrete-filled stainless steel tubular columns.

Highlights • The concrete-filled stainless steel tubular (CFSST) columns have been investigated. • Steel fibers are an effective in-filled material for CFSST columns for ductility. • The CFSST columns have exhibited significant structural behavior.