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Concrete Filled Steel Tube Reinforced Concrete (CFSTRC) Columns Subjected to ISO-834 Standard Fire: Experiment
This paper is an attempt to study the fire performance of concrete filled steel tube reinforced concrete (CFSTRC) columns exposed to fire condition. Tests were carried out on CFSTRC columns subjected to ISO-834 standard fire. Details of temperature distribution, fire resistance, deformations and failure mechanism are presented in the paper. Based on the observation and analysis of test results, the characteristics of CFSTRC columns subjected to a fire were investigated. It was found that the concrete outside CFST can act as a natural insulation to the steel tube and the inner concrete; there was no local buckling in steel tube due to the presence of concrete both outside and inside steel tube; the concrete inside steel tube kept intact in the test. These characteristics make CFSTRC columns obtain a favorable fire performance. A three-dimensional finite element analysis (FEA) model was developed to calculate the temperature field of CFSTRC columns. Based on theoretic analysis, the influences of important parameters on the temperature field of the composite columns were investigated. The studies in the paper will be a foundation for further theoretical analysis on the mechanic performance of CFSTRC columns exposed to fire.
Concrete Filled Steel Tube Reinforced Concrete (CFSTRC) Columns Subjected to ISO-834 Standard Fire: Experiment
This paper is an attempt to study the fire performance of concrete filled steel tube reinforced concrete (CFSTRC) columns exposed to fire condition. Tests were carried out on CFSTRC columns subjected to ISO-834 standard fire. Details of temperature distribution, fire resistance, deformations and failure mechanism are presented in the paper. Based on the observation and analysis of test results, the characteristics of CFSTRC columns subjected to a fire were investigated. It was found that the concrete outside CFST can act as a natural insulation to the steel tube and the inner concrete; there was no local buckling in steel tube due to the presence of concrete both outside and inside steel tube; the concrete inside steel tube kept intact in the test. These characteristics make CFSTRC columns obtain a favorable fire performance. A three-dimensional finite element analysis (FEA) model was developed to calculate the temperature field of CFSTRC columns. Based on theoretic analysis, the influences of important parameters on the temperature field of the composite columns were investigated. The studies in the paper will be a foundation for further theoretical analysis on the mechanic performance of CFSTRC columns exposed to fire.
Concrete Filled Steel Tube Reinforced Concrete (CFSTRC) Columns Subjected to ISO-834 Standard Fire: Experiment
Xu, Lei (author) / Liu, Yu-Bin (author)
Advances in Structural Engineering ; 16 ; 1263-1282
2013-07-01
20 pages
Article (Journal)
Electronic Resource
English
Performance of concrete filled steel tube reinforced concrete columns subjected to cyclic bending
| Online Contents | 2009