Experimental research and analysis of load capacity and deformability of slender high strength concrete columns in biaxial bending

摘要

The paper shows results of experimental research and a comparative analysis of load-bearing capacity and deformability of sixteen reinforced concrete columns made of HSC in bi-axial bending. The computational analysis was conducted on the basis of approaches commonly used in EC2 (2004) and ACI (2008) standards, and the results were compared with the results of own experimental research. The described tests were carried out on elements similar to columns at a natural scale, whose slenderness ratio in main planes was: 1.0, 2.0, 3.0 and 4.0. All elements were made of concrete of a mean cylindrical strength amounting, on the test day, of 155 MPa.