Simple Method To Predict Fire Resistance Of Composite Columns

2000 ◽  
Vol 6 ◽  
pp. 879-890 ◽  
Author(s):  
J. Myllyrnaki ◽  
D. Baroudi
Keyword(s):  
Fire Resistance ◽  
Simple Method ◽  
Composite Columns

Experimental Study on Limiting Temperatures of Circular Hollow Sections

2012 ◽  
Vol 472-475 ◽  
pp. 1206-1214 ◽  
Author(s):  
In Kyu Kwon ◽  
Heung Youl Kim ◽  
Hyung Jun Kim
Keyword(s):  
Fire Resistance ◽  
Simple Method ◽  
Hollow Section ◽  
Steel Columns ◽  
Steel Members ◽  
Fire Condition ◽  
And Performance ◽  
Circular Hollow Section ◽  
Limiting Temperatures ◽  
Fire Design

Fire resistance is required to sustain the structural stability when building elements are exposed to a severe fire condition. To evaluate the fire resistance of structural members such as columns and beams, fire engineers can apply either prescriptive methods or performance-based fire design. These two kinds of fire resistance evaluation methods have been developed independently and performance fire design consists mainly of an advanced and simple methods. The simple method stipulated in New Zealand and the U.K. use the limiting temperature. The values of the limiting temperatures of structural steel members were shown in the BS, SNZ, etc but the temperatures of individuals were not classified. In general steel columns were made of H-section but recently the hollow section is inclined to increase for its higher resistant of structural stabilities than any other sections. But the hollow section shows different pattern when it carry out the loads in the cold and is expected to show different behavior when it is exposed to fire. Therefore the limiting temperature of the hollow section is required for evaluation of fire resistance. The paper is to make the limiting temperature of the circular hollow section (CHS) with or without filling of concrete and variance of applied loads.

Fire resistance of composite columns with embedded I-section steel — Effects of section size and load level

2008 ◽  
Vol 64 (3) ◽  
pp. 312-325 ◽  
Author(s):  
Zhan-Fei Huang ◽  
Kang-Hai Tan ◽  
Wee-Siang Toh ◽  
Guan-Hwee Phng
Keyword(s):  
Fire Resistance ◽  
Load Level ◽  
Composite Columns ◽  
Section Size

Axial restraint effects on the fire resistance of composite columns encasing I-section steel

2007 ◽  
Vol 63 (4) ◽  
pp. 437-447 ◽  
Author(s):  
Zhan-Fei Huang ◽  
Kang-Hai Tan ◽  
Guan-Hwee Phng
Keyword(s):  
Fire Resistance ◽  
Composite Columns

Constant effective thermal conductivity of intumescent coatings: Analysis of experimental results

2017 ◽  
Vol 35 (2) ◽  
pp. 132-155 ◽  
Author(s):  
GQ Li ◽  
Jun Han ◽  
Yong C Wang
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Fire Resistance ◽  
Coating Thickness ◽  
Fundamental Property ◽  
Simple Method ◽  
Intumescent Coating ◽  
Intumescent Coatings ◽  
Steel Section ◽  
Fire Conditions

This article presents the results of an investigation to obtain the constant effective thermal conductivities of intumescent coatings under the influence of different intumescent coating factors (type of intumescent coating, coating thickness, steel section factor, fire condition), based on the analysis of an extensive collection of fire test data. The constant effective thermal conductivity is not a fundamental property of the intumescent coating, but is a desired quantity for simplified practical fire resistance design. It is defined as the temperature-averaged value of the temperature-dependent effective thermal conductivity within the temperature range of interest for fire resistance design of steel structures. The results indicate that for each of the intumescent coating types examined, a consistent constant effective thermal conductivity exists. The constant effective thermal conductivity tends to increase with decreasing steel section factor and to decrease with increasing coating thickness. For intumescent coating–protected steel I-sections, incorporating the shadow effect gives more consistent values of constant thermal conductivity compared to those without accounting for the effect. The same constant effective thermal conductivity obtained from the ISO fire tests may be used for different fire conditions as long as the steel temperature is higher than 400 °C. The results of this research make it possible to develop a simple method to calculate temperatures of intumescent coating–protected steel sections under different fire conditions.

scholarly journals An artificial neural network prediction model for fire resistance of composite columns

2014 ◽  
Vol 12 (1) ◽  
pp. 63-68 ◽  
Author(s):  
Marijana Lazarevska ◽  
Milivoje Milanovic ◽  
Milos Knezevic ◽  
Meri Cvetkovska ◽  
Ana Trombeva-Gavrilovska ◽  
...  
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Prediction Model ◽  
Fire Resistance ◽  
Composite Columns ◽  
Neural Network Prediction ◽  
Network Prediction ◽  
Artificial Neural

scholarly journals Numerical comparison between the thermo-structural behavior of steel and partially encased steel and concrete composite columns in fire

2018 ◽  
Vol 11 (4) ◽  
pp. 876-901
Author(s):  
Y. S. SIMÕES ◽  
F. M. ROCHA ◽  
J. MUNAIAR NETO
Keyword(s):  
Fire Resistance ◽  
Numerical Study ◽  
Load Ratio ◽  
Numerical Comparison ◽  
Geometric Imperfection ◽  
Composite Columns ◽  
Variation Of Parameters ◽  
Surrounding Structure ◽  
Bare Steel ◽  
In Fire

Abstract The bare steel structural members have a low fire resistance. However, in steel and concrete composite members, the concrete encasement, besides the contribution to the stiffness of the whole system, reduces the amount of heat that reaches the steel profile, increasing the its fire resistance. The aim of this paper is to conduct a numerical study on the behavior of steel and steel and concrete composite columns in fire, in order to compare their performance based on the variation of parameters such as the stiffness of the surrounding structure, geometric imperfection and load ratio. It has been found that, in general, the intensity of the geometric imperfection and stiffness of the surrounding structure does not affect the fire resistance of steel and composite columns. However, the stiffness of the surrounding structure raised the maximum value of the restraining forces generate throughout the heating. Regarding the load ratio, when increased, the fire resistance and critical temperature decreased.

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