Development of Thermal Resistance Elements for Thermal Analysis of Composite Structural Members in Fires

Abstract:

Building fires, which may cause failure of buildings, occur frequently in cities all over the world. Composite structural members, such as concrete filled steel tube columns and steel-decked composite floor slabs, are being increasingly used in buildings for their dual advantage of excellent load bearing capacity and fire resistance. Because the heat transfer across a steel-concrete interface is difficult to model using ordinary elements, most existing finite element analysis models ignore the effect of thermal contact resistance. In this paper, several two- and three-dimensional new thermal resistance elements (referred as TRE for brevity), which have been embed in the special purpose finite element software TFIELD coded by authors, are proposed. Two numerical examples are given. Numerical simulating results demonstrate that the proposed thermal resistance elements are extremely effective.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 2704-2708
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.2704
• Online since: December 2012
• Authors: Yong Jun Liu, Yu Min Yan, Li Hong Yao, Xue Wang
• Keywords: Composite Structural Member, Fire, Interface, Thermal Resistance Element

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