Evaluation of the Fire Resistance for Beams Designed with Fire Resistant Steel through a Fire Engineering Method

2017 ◽  
Vol 748 ◽  
pp. 288-291
Author(s):  
In Kyu Kwon

A fire resistant performance is very an important factor for sustaining of the structural stability in a building when the building is covered with a severe fire. In this study, to evaluate the fire resistant characteristics of the beams designed with FR steel and TMC FR steel, a fire engineering method was applied. The results showed that the beam using a FR steel reveals a litter better structural performance than that of TMC FR steel.

2012 ◽  
Vol 204-208 ◽  
pp. 3190-3193
Author(s):  
In Kyu Kwon ◽  
Young Bong Kwon

Building fires can cause severe damages to not only human life but also building structures. Therefore, every nation requires a building regulation related to fire in aspect of safety of human and structural stability. The structural stability under fire condition can be evaluated by the fire test defined in each nation’s standard. However, the results from the test don’t satisfy the real situations of the building such as fire loads, opening size, loading and boundary condition of structural members, and etc. Meanwhile, performance based fire engineering design is regarded as an alternative evaluation method of fire. The fire engineering method has been regarded as a more rational method than the prescriptive method in terms of accuracy and cost efficiency. Recently, the limit temperature method is regarded as the easiest fire engineering method to evaluate the structural stability under fire. To make the backbone of a specification of limiting temperature method, limiting temperatures of various structural members are required. In this paper, in order to make a database of the limiting temperatures of H-section columns and beams, fire test programs with loading were conducted and the limiting temperatures and fire resistance were derived.


1994 ◽  
Vol 120 (4) ◽  
pp. 1103-1121 ◽  
Author(s):  
Y. Sakumoto ◽  
T. Yamaguchi ◽  
T. Okada ◽  
M. Yoshida ◽  
S. Tasaka ◽  
...  

Author(s):  
Yoshifumi SAKUMOTO ◽  
Tanemi YAMAGUCHI ◽  
Tadayoshi OKADA ◽  
Masatomo YOSHIDA ◽  
Shigeki TASAKA ◽  
...  

Author(s):  
Andrii Kovalov ◽  
◽  
Yurii Otrosh ◽  
Vitalii Tomenko ◽  
Andrii Kondratiev ◽  
...  

Purpose. Evaluation of fire resistance of fire-resistant steel structures using the developed calculation and experimental method. Methods. Finite difference method, landfill fire test method, mathematical and computer modeling of non-stationary heat exchange processes, determination of thermophysical characteristics of fire-retardant coatings based on solving direct and inverse thermal conductivity problems. Results. Geometric, physical, computer models have been developed, with the help of which the fire resistance of fire-resistant steel structures has been evaluated by the calculation-experimental method. The adequacy of the developed method for assessing the fire resistance of fire-resistant steel structures in assessing the fire resistance of fire-resistant I-beam steel column has been checked. The analysis of tests on fire resistance of fire-resistant steel columns exposed to fire at the standard temperature of the fire without the load applied to them has been carried out. A computer model of the “steel column – reactive flame retardant coating” system has been built for numerical simulation of non-stationary heating of such a system. The fire resistance of fire-resistant steel columns of I-beam section without load applied to them has been evaluated using the calculation-experimental method. Verification of results of experimental research with results of numerical modeling has been carried out. Scientific novelty. The convergence of the results of experimental data on the duration of fire exposure at the standard temperature of the fire to reach the critical temperature of steel with the results of numerical simulations has been determined. Based on the comparison of the experimental results and numerical modeling, the adequacy of the developed model to the real processes that occur when heating fire-retardant steel columns without applying a load under fire conditions at a standard fire temperature has been confirmed. The efficiency of the proposed calculation and experimental method for assessing the fire resistance of fire-resistant steel structures has been confirmed. Practical significance. It consists in the implementation of the results on objects of different purposes in assessing the fire resistance of fire-resistant steel structures by evaluating the effectiveness of fire-retardant coatings of steel building structures.


Author(s):  
Yoshifumi SAKUMOTO ◽  
Tanemi YAMAGUCHI ◽  
Tadayoshi OKADA ◽  
Masatomo YOSHIDA ◽  
Shigeki TASAKA

2014 ◽  
Vol 886 ◽  
pp. 51-54
Author(s):  
In Kyu Kwon

Fire resistance of H-section by types of boundary condition such as hinge to hinge, hinge to fixed, and fixed to fixed at high temperature can be different. However, the study of evaluation is very limited. In this study, to estimate the fire resistance of H-section made of ordinary structural steel, SS 400, a fire engineering method was used with applying materials properties at high temperature and a heat analysis, a stress analysis. The results showed that hinge to hinge boundary condition was the lowest at an allowable stress at high temperature. Therefore, the application of the hinge to hinge is more conservative boundary condition in H-section connection in high temperature.


2021 ◽  
Vol 3 (2) ◽  
pp. 29-39
Author(s):  
A. Kovalov ◽  
◽  
Y. Otrosh ◽  
V. Tomenko ◽  
V. Slovinskyi ◽  
...  

Based on the developed geometric, physical, computer and finite element model, the fire resistance of fire-resistant steel structures was evaluated by calculation and experimental method. The adequacy of the developed computational-experimental method for assessing the fire resistance of fire-resistant steel structures in assessing the fire resistance of a fire-resistant I-beam steel column was verified. The results of tests for fire resistance of steel columns with fire-retardant coating at standard temperature of the fire without the load applied to them (temperature in the furnace, temperature in certain places on the surface of fire-retardant steel columns, the behavior of the investigated fire-retardant coating). The analysis of tests on fire resistance of fire-resistant steel columns exposed to fire at standard temperature (temperature in the furnace, temperature in places of measurement of temperature on a surface of columns, behavior of a fire-retardant covering) is carried out. A computer model of the «steel column – reactive flame retardant coating» system has been built for numerical simulation of non-stationary heating of such a system. Simulation of non-stationary heating of the system «steel column – fire-retardant coating» in the software package FRIEND with the specified parameters (geometric model, thermal effects, initial and boundary conditions, properties of system materials). The reliability of the results of numerical modeling with real experimental data on the duration of fire exposure at the standard temperature of the fire to reach the critical temperature of steel. Based on the comparison of experimental results and numerical simulations, a conclusion is made about the adequacy of the developed model to the real processes that occur when heating fire-retardant steel columns without applying a load under fire conditions at standard fire temperature. The efficiency of the proposed calculation and experimental method for assessing the fire resistance of fire-resistant steel structures has been confirmed.


Sign in / Sign up

Export Citation Format

Share Document