Concrete-filled double-skin tubular columns under fire
- 1 April 2008
- journal article
- Published by Thomas Telford Ltd. in Magazine of Concrete Research
- Vol. 60 (3), 211-222
- https://doi.org/10.1680/macr.2007.00074
Abstract
The current paper is concerned with the performance of concrete-filled double-skin steel tubular (CFDST) columns subjected to ISO-834 standard fire on all sides. The finite-element method was employed for the determination of temperature distributions in the section. A theoretical model, which was previously used to study the fire resistance of conventional concrete-filled steel tubular (CFST) columns, was used to predict the fire performance of CFDST columns. Results from this theoretical model are presented to examine the effects of several key parameters on the fire resistance, the strength index (ks) and the fire protection material thickness of CFDST columns. Finally, formulae required for the fire resistance and the fire protection material thickness of CFDST columns are proposed. These formulae may be suitable for incorporation into future design codes.Keywords
This publication has 15 references indexed in Scilit:
- Hybrid FRP–concrete–steel tubular columns: Concept and behaviorConstruction and Building Materials, 2007
- Double skin composite constructionProgress in Structural Engineering and Materials, 2006
- Performance of steel–concrete composite structures in fireProgress in Structural Engineering and Materials, 2005
- Concrete-filled double skin (SHS outer and CHS inner) steel tubular beam-columnsThin-Walled Structures, 2004
- Behaviour of concrete-filled double skin (CHS inner and CHS outer) steel tubular stub columns and beam-columnsJournal of Constructional Steel Research, 2004
- Concrete-Filled Steel Tubes Subjected to Axial Compression and Lateral Cyclic LoadsJournal of Structural Engineering, 2004
- An experimental study and calculation on the fire resistance of concrete-filled SHS and RHS columnsJournal of Constructional Steel Research, 2003
- Experimental Study and Calculation of Fire Resistance of Concrete-Filled Hollow Steel ColumnsJournal of Structural Engineering, 2003
- Plastic mechanism analysis of concrete-filled double-skin (SHS inner and SHS outer) stub columnsThin-Walled Structures, 2002
- Calculation of the fire resistance of steel hollow structural section columns filled with plain concreteCanadian Journal of Civil Engineering, 1994