American Society of Civil Engineers


Finite Element Stress Analysis of a Reinforced High-Strength Concrete Column in Severe Fires


by Jae H. Chung, (Post-doctoral Research Assistant, Department of Civil & Coastal Engineering, University of Florida, PO Box 116580, Gainesville, FL 32611) and Gary R. Consolazio, (Assistant Professor, Department of Civil & Coastal Engineering, University of Florida, PO Box 116580, Gainesville, FL 32611)

pp. 1-8, (doi:  http://dx.doi.org/10.1061/40700(2004)126)

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Document type: Conference Proceeding Paper
Part of: Structures 2004: Building on the Past, Securing the Future
Abstract: Reinforced high-strength concrete structures exposed to intensive fire have been found to be prone to explosive spalling. The objective of this study is to identify and quantify, using the numerical methodology presented, the development of thermal stress states that account for the occurrence of moisture induced spalling under rapid heating conditions. By use of the theory of stress superposition, pore pressures and concrete temperatures predicted by the model are included in a stress analysis that considers thermal dilatation and boundary constraint. The modeling techniques presented in the paper will be of interest to researchers involved in assessing the fire performance of high strength concrete.


ASCE Subject Headings:
Columns
Finite element method
Fire resistance
High-strength concrete