Bearing Capacity of Slender Concrete Columns

«ultimate capacity of slender crncrete and reinforced concerete columns »

a subject of the investigation is the behavior of concrete and reinforced concrete columns under different loading conditions. the experimental study comprised a great number of tests on hinged - end columns with slenderness ratio within 35 and 155 subjected to both short and long - time loads applied at different eccentricities. the strength of concrete and the steel percentage varied in a wid...

Determination of Buckling Loads from Triaxial Load Tests of Slender Concrete-filled Tube Beam-columns

This paper briefly describes efforts at determining buckling loads of slender concrete-filled tube beam-columns. Although utilizing state-of-the-art equipment and controllers, unexpected difficulties were encountered on extracting buckling loads for the specimens due to (a) frictional forces in the actuators, (b) large initial bidirectional imperfections, (c) initial stresses due to constructio...

Ambient and fire behaviour of eccentrically loaded elliptical slender concrete-filled tubular columns

This paper presents the results of an experimental program carried out on slender elliptical hollow section columns filled with concrete. Given the reduced number of experimental results found in the literature on concrete filled tubular columns with elliptical cross-section, the main objective of this paper is to compare the behaviour of such innovative cross-sections under ambient and high te...

Fire behavior of axially loaded slender high strength concrete - filled tubular columns

This paper describes sixteen fire tests conducted on slender circular hollow section columns filled with normal and high strength concrete, subjected to concentric axial loads. The test parameters were the nominal strength of concrete (30 and 80 MPa), the infilling type (plain concrete, reinforced concrete and steel fiber reinforced concrete) and the axial load level (20% and 40%). The columns ...

An Analytical Method for the Evaluation of the RC Columns Capacity Strengthened by Concrete Overlays