Experimental Study and Calculation of Fire Resistance of Concrete-Filled Hollow Steel Columns
Publication: Journal of Structural Engineering
Volume 129, Issue 3
Abstract
Hollow structural steel (HSS) columns filled with concrete offer a number of benefits and are often used in tall buildings and other industrial structures. A mathematical model was developed and used to investigate the influence of important parameters that determine the fire resistance of concrete-filled hollow steel columns. The behavior of concrete-filled HSS columns with or without fire protection subjected to axial or eccentric loads was experimentally investigated and the results presented in this paper. The parametric and experimental studies provide information for the development of formulas for the calculation of the fire resistance and fire protection thickness of the composite columns. The main objectives of this work were threefold: First, to report a series of fire tests on composite columns; second, to analyze the influence of several parameters, such as the sectional dimension, load eccentricity ratio, and fire protection thickness on the fire resistance of the composite columns. It was found, in general, that the sectional dimension and the fire protection thickness have significant influence on the fire resistance of concrete-filled HSS columns; however, the load eccentricity ratio has moderate influence on the fire resistance. The final objective was to develop formulas for the calculation of the fire resistance and the fire protection thickness of the concrete-filled HSS columns.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 3 • March 2003
Pages: 346 - 356
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Oct 29, 2001
Accepted: Jun 24, 2002
Published online: Feb 14, 2003
Published in print: Mar 2003
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