EXPERIMENTAL ANALYSIS OF SLENDER HPC COLUMNS AT THE STABILITY FAILURE

Abstract eng:
The European standard for design of compressed concrete members allows the use of non-linear calculations. The required reliability within design of slender members subjected to axial force and bending moment is not yet satisfyingly verified and confirmed for cases when the buckling failure precedes the breach in the critical cross-section. In order to verify and compare the reliability of the standard design methods, a comparison with experiment results is necessary. In cooperation with STRABAG Bratislava LTD, the Faculty of Civil Engineering at the Slovak University of Technology in Bratislava, carried out an applied research covering an experimental verification of slender high-performance concrete columns. In the following paper, the authors present the preparation and progress of the third series of experimental verifications for six slender high-performance concrete columns of the concrete strength class C80/95. The reinforcement and shape of the columns together with the initial eccentricity of axial force were designed so that the columns fail due to stability loss before reaching the resistance in the critical cross-section.

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