Chapter
Feb 22, 2016
Fire Tests of Concrete-Filled Circular Hollow Section Columns with a Solid Steel Core
Authors: M. Neuenschwander [email protected], M. Knobloch [email protected], and M. Fontana [email protected]Author Affiliations
Publication: Composite Construction in Steel and Concrete VII
Abstract
This paper presents the results of a fire testing program of four concrete filled circular hollow section columns with solid steel core. The structural fire behaviour is analysed by means of the recorded deformation–time as well as temperature–time course. Thereby it is shown, that after the temperature induced failure of the tube, the load is redistributed to the core. Depending on the pre-loading level, these columns can subsequently sustain the load with a bounded rate of deflection, until runaway failure occurs when the temperature induced stiffness degradation of the core sets in. A three-dimensional FEM model is validated with one of the fire tests and the influence of the support conditions, the eccentricity of the load and the input data of the constitutive model of the steel core are studied.
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Published In
Composite Construction in Steel and Concrete VII
Pages: 508 - 521
Copyright
© 2016 American Society of Civil Engineers.
History
Published online: Feb 22, 2016
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Affiliations
Institute of Structural Engineering, ETH Zurich, Stefano-Franscini-Platz 5, 8093 Zurich, Switzerland. E-mail: [email protected]
Institute of Steel, Lightweight and Composite Structures, Ruhr Universität Bochum, Universitätsstrasse 150, 44801 Bochum. E-mail: [email protected]
Institute of Structural Engineering, ETH Zurich, Stefano-Franscini-Platz 5, 8093 Zurich, Switzerland. E-mail: [email protected]
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