Experimentelle Untersuchungen an neuartigen Hohlprofil-Verbundstützen mit Blechlamellen aus hochfesten Stählen im Kalt- und Brandfall

Michael Schäfers, Shaghayegh Ameri, Martin Mensinger, Jochen Zehfuß

Research output: Contribution to specialist publicationArticle

Abstract

Experimental investigations on novel composite columns with a concrete filled hollow section and high-strength steel plates as core in ambient and fire conditions. High-performance composite columns are commonly carried out with solid steel sections as core profiles. These profiles imply limitations due to reductions of the yield strength depending on the thickness and high residual stresses. In this publication, the authors present a novel section consisting of a concrete filled circular hollow section with locally connected steel plates as core. To increase the load bearing capacity, steels with yields strengths up to 960 N/mm2 are used. Experimental investigations for ambient conditions and in case of fire are presented. The columns showed a promising load bearing behaviour. These investigations will serve as basis for a systematic development of this innovative, high-performance composite column with a corresponding design concept.

Original languageGerman
Pages144-154
Number of pages11
Volume92
No3
Specialist publicationStahlbau
DOIs
StatePublished - Mar 2023

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