A Model For Evaluating The Fire Resistance Of High Performance Concrete Columns

Abstract

A numerical model, in the form of a computer program, for evaluating the fire resistance of high performance concrete (HPC) columns is presented. The three stages, associated with the thermal and structural analysis, for the calculation of fire resistance of columns is explained. A simplified approach is proposed to account for spalling under fire conditions. The use of the computer program for tracing the response of an HPC column from the initial pre-loading stage to collapse, due to fire, is demonstrated.The validity of the numerical model used in the program is established by comparing the predictions from the computer program with results from full-scale fire resistance tests. Details of fire resistance experiments carried out on HPC columns, together with results, are presented. The computer program can be used to evaluate the fire resistance of HPC columns for any value of the significant parameters, such as load, section dimensions, fiber reinforcement, column length, concrete strength, aggregate type, and fiber reinforcement without the necessity of testing.

ISO 834 standard fire test and mechanism analysis of square tubed-reinforced-concrete columns

“…Considerable research has also been carried out to investigate the fire performance of RC columns, e.g. the works of Klingsch et al [31], Lie and Woollerton [32], Vandevelde et al [33], Kodur et al [34], Tan and Yao [35], Bratina et al [36], Wu et al [37], Sadaoui and Khennane [38], Martins and Rodrigues [39], Bamonte and Monte [40] and Achenbach and Morgenthal [41].…”

Fire resistance prediction for reinforced concrete columns: A comparative application of artificial neural network and random tree methods

“…Generally 1. This database is compiled from the existing studies (Lie and Woollerton 1988;Myllymaki and Lie 1991;Kodur et al 2001;Kodur and McGrath 2003;Kodur et al 2005;Shah and Sharma 2017;Buch and Sharma 2019). Full details and more information can be found in their respective references.…”

Sectional model for the fire evaluation of reinforced concrete columns subjected to biaxial bending

“…The thermal model was validated with the experimental temperatures recorded in the tests carried out by Kodur et al [28], Lie and Irwin [24] and Lie and Woollerton [29] where the columns were four-sided exposed to the ASTM-E119 standard temperature-time curve [30].…”