Study on Section Temperature Field of Concrete-Filled Double Steel Tubular Columns under Fire

Abstract:

Finite element model was built in order to study the section temperature field of concrete-filled double steel tubular columns through the software of ANSYS. Moisture of concrete and thermal contact resistance were considered in the model. Based on the Eurocode 2, specific heat of concrete was modified in order to consider the effect of moisture. Contact elements were created in the interface between steel tube and concrete in order to consider the effect of thermal contact resistance. The effects of diameter of steel tube and type of aggregate to section temperature field were studied. Distribution of section temperature field is given on the concrete-filled double steel tubular columns, which provides the basis for the analysis of fire resistance capability.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 1125-1128
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.1125
• Online since: December 2014
• Authors: Shu Ping Cong*, Teng Li, Jin Sheng Han
• Keywords: Concrete-Filled Double Steel Tubular Columns, Fire, Section Temperature Field, Specific Heat, Thermal Contact Resistance

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