Evaluation of the Fire Resistance of H-Section Steel Columns and Beams

2012 ◽  
Vol 204-208 ◽  
pp. 3190-3193
Author(s):  
In Kyu Kwon ◽  
Young Bong Kwon
Keyword(s):  
Structural Stability ◽  
Fire Resistance ◽  
Fire Test ◽  
Evaluation Method ◽  
Human Life ◽  
Engineering Method ◽  
Structural Members ◽  
Fire Engineering ◽  
Temperature Method ◽  
Limiting Temperatures

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.

Experimental Study on the Fire Resistance of Rectangular Hollow Sections Steel Columns

2012 ◽  
Vol 557-559 ◽  
pp. 112-115
Author(s):  
In Kyu Kwon ◽  
Heung Youl Kim ◽  
Hyung Jun Kim
Keyword(s):  
Engineering Design ◽  
Fire Resistance ◽  
Scientific Method ◽  
Maximum Temperature ◽  
Structural Elements ◽  
Structural Members ◽  
Building Collapse ◽  
Steel Columns ◽  
Fire Engineering ◽  
Limiting Temperatures

A fire occurring at a building causes severe damages to its structural members and brings unexpected collapse. Therefore, the building regulation of each nation has to define fire resistance to prevent building collapse due to high temperatures. In general, the fire resistance of each structural member can be evaluated by two methods. One is prescriptive method that is guided by a specific building regulation containing fire resistance examples or by the application of new examples tested fire experimental procedures. The other is performance based fire engineering design. Being an engineered and scientific method, it utilizes the results obtained from the calculation of fire severities, temperatures of members and so on. The easiest way to evaluate the fire resistance of a steel member is to compare its limiting temperature and maximum temperature. Therefore, constructing the database of the limiting temperatures of structural elements is very important in performance based fire engineering design. This paper is to derive the fire resistance and limiting temperatures of rectangular hollow sections under loads.

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
Keyword(s):  
Structural Stability ◽  
Fire Resistance ◽  
Engineering Method ◽  
Structural Performance ◽  
Resistant Steel ◽  
Severe Fire ◽  
Fire Engineering ◽  
Fire Resistant Steel

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.

Study on the Data-Bases for Fire Engineering Design of Structural Steels Members

2012 ◽  
Vol 628 ◽  
pp. 156-160
Author(s):  
In Kyu Kwon ◽  
Hyung Jun Kim ◽  
Heung Youl Kim ◽  
Bum Yean Cho ◽  
Kyung Suk Cho
Keyword(s):  
Bearing Capacity ◽  
Fire Resistance ◽  
Engineering Method ◽  
Fire Tests ◽  
Structural Members ◽  
Data Bases ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
In Fire ◽  
Resistance Performance

Structural steel has been used since the early 1970’s in Korea as primary structural members such as columns, beams, and trusses. The materials have much higher strength such as fast construction, high load bearing capacity, high construction quality but those have a fatal weakness as well. Load-bearing capacity is going down when the structural members are contained in fire condition. Therefore, to protect the structural members made of steels from the heat energy the fire resistance performance required. Generally, the fire resistance performance have evaluated from the exact fire tests in fire furnaces. But the evaluation method takes much more time and higher expenses so, the engineering method requires. The engineering method not only adopts a science but also an engineering experience. In this paper, to make various data-bases for evaluation of structural members such as columns(H-section, RHS), beams, loaded fire tests were conducted and derived not only each limiting temperature but also fire resistance respectively.

Evaluation of the Fire Resistance of H-Section Made of High Strength Structural Steels with a Difference of Length

2014 ◽  
Vol 919-921 ◽  
pp. 95-98
Author(s):  
In Kyu Kwon
Keyword(s):  
High Temperature ◽  
Fire Resistance ◽  
Fire Test ◽  
High Strength ◽  
Structural Steels ◽  
Design Phase ◽  
Fire Performance ◽  
High Rise ◽  
Fire Engineering ◽  
Engineering Technique

High-rise building is one of solution for lack of houses and offices in downtown. And high-rise buildings can be built by application of high strength materials such as structural steels and concrete. Particularly, high strength structural steels have much efficient properties in not only design phase but construction one. Therefore, the use of the high strength structural steels has been increased every year. However, the H-section made of the high strength structural steels can be designed and constructed with longer height than that was evaluated for fire resistance by fire test to satisfy the fire regulation. In this study, to suggest an exact fire performance at high temperature of H-section made of high strength structural steels, a fire engineering technique was used. The derived facts showed that SM 570 revealed better structural stability at high temperature and as longer length of H-section was used, the more fire protection materials requited.

An Evaluation of the Fire Performance of H-Section Made of Ordinary Strength Structural Steels by Differences of Length

2014 ◽  
Vol 893 ◽  
pp. 436-439
Author(s):  
In Kyu Kwon
Keyword(s):  
Yield Strength ◽  
Structural Steel ◽  
Structural Stability ◽  
Fire Resistance ◽  
Fire Test ◽  
Structural Steels ◽  
Fire Performance ◽  
Steel Building ◽  
Resistance Performance

Fire resistance performance in steel building is very important for sustaining structural stability during a fire. However, the fire performance has been evaluated by fire test with only one length of the H-section made of an ordinary strength structural steel, such as SS 400 or SM 400. These have the same yield strength, but SM 400 has a better weldability. Therefore, the determination of fire protective materials can be difficult when the H-section made of SS 400 and SM 400 is applied into columns having different lengths are changed. In this paper, an evaluation was conducted to suggest a new guideline for the fire resistance of H-section built with an ordinary strength steels such as SS 400 and SM 400 and having variance of lengths. The results revealed the H-section made of SM 400 showed a little better fire resistance performance. Also, the longer the length of column, the less the fire resistance. Therefore, a new guideline is required to compensate the fire resistance of longer column than that from fire tested.

A Study of the Fire Resistance against Structural Materials of H-Section Made of SS 400 by Boundary Conditions at High Temperature

2014 ◽  
Vol 886 ◽  
pp. 51-54
Author(s):  
In Kyu Kwon
Keyword(s):  
Boundary Condition ◽  
High Temperature ◽  
Boundary Conditions ◽  
Stress Analysis ◽  
Structural Steel ◽  
Fire Resistance ◽  
Engineering Method ◽  
Allowable Stress ◽  
Materials Properties ◽  
Fire Engineering

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.

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