A Comparative Study on the Fire Resistance of Ordinary Grade Structural Steels

2014 ◽  
Vol 904 ◽  
pp. 228-231
Author(s):  
In Kyu Kwon
Keyword(s):  
Heat Transfer ◽  
Fire Resistance ◽  
Fire Test ◽  
Structural Steels ◽  
Mechanical And Thermal Properties ◽  
Structural Elements ◽  
Heat Transfer Theory ◽  
Eurocode 3 ◽  
The Cost ◽  
Fire Design

Fire resistance of structural elements such as columns and beams has been evaluated by the fire test. However, needs of fire design based on analysis using a heat transfer theory and a stress analysis are increasing because the design can reduce not only the period of the fire test but the cost of it. The reliability of the analysis would be totally dependent on the mechanical, thermal databases of their structural steels. This paper evaluates the fire resistance of ordinary grade structural steels manufactured from Korea by examining the mechanical and thermal properties of SS 400, SM 400, and SM 490 at high temperature and comparing them with those defined in Eurocode 3. The results showed that the ordinary structural steel had almost the same characteristics as those in Eurocode 3.

A Study on Comparison of Mechanical, Thermal Properties of High Strength Structural Steels at High Temperature

2014 ◽  
Vol 902 ◽  
pp. 3-6
Author(s):  
In Kyu Kwon
Keyword(s):  
Thermal Properties ◽  
High Temperature ◽  
Elevated Temperature ◽  
Fire Resistance ◽  
High Strength ◽  
Structural Steels ◽  
Mechanical And Thermal Properties ◽  
Protective Material ◽  
Eurocode 3 ◽  
Resistance Performance

As the strength of structural steels is increasing, the performance of fire resistance should be evaluated clearly and suggested. While their application has been expanded, the evaluation of the fire resistance is inclined to adopt that derived from ordinary strength steels. In order to compare the fire resistance performance of high strength structural steels at high temperature, databases such as mechanical and thermal properties at elevated temperature were compared with those of Eurocode 3. After comparison, it is recommended that the passive protective material is more needed than those for the ordinary strength structural steels to meet the fire resistance requirement.

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.

scholarly journals VIRGILE project: The concept of virtual fire resistance facility for the assessment of construction products performance

Fire Research ◽  
2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Gildas Auguin ◽  
Virginie Dréan
Keyword(s):  
Fire Resistance ◽  
Fire Test ◽  
Test Facility ◽  
Simulation Tools ◽  
Stress Control ◽  
Fire Resistance Test ◽  
Construction Products ◽  
Accredited Laboratories ◽  
The Cost ◽  
In Fire

Construction industries products have to satisfy fire safety regulation, including technical approvals in fire resistance, by tests in accredited laboratories. Fire resistance tests lay down on a complex protocol, in which full size samples are settled in large furnaces able to reproduce severe time-dependent fire curves. The full-scale mounting and the cost of such tests could be a constraint for their development. In that context, the concept of virtual facility has been developed by Efectis during the VIRGILE project. The use and development of numerical simulation tools are an interesting complement to the fire tests. The developed tool aims to model a fire resistance test including interaction between sample and fire test facility. The virtual facility allows to better analyze and evaluate a large number of technical alternatives in order to find the most efficient technical and economical solutions. Moreover, numerical simulations may improve the testing conditions including thermal stress control and metrology. This paper presents an overview of the main results and applications achieved during the VIRGILE project in ten years.

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.

Analysis of Structural Stability for H-Section Made of SM 400 According to Lengths and Boundary Conditions at High Temperatures

2014 ◽  
Vol 543-547 ◽  
pp. 3857-3860
Author(s):  
In Kyu Kwon
Keyword(s):  
Boundary Condition ◽  
Thermal Properties ◽  
Boundary Conditions ◽  
Fire Resistance ◽  
Mechanical And Thermal Properties ◽  
Structural Elements ◽  
Limited Size ◽  
Testing Facility ◽  
Main Factors ◽  
Proper Theory

A fire can cause serious damage to steel framed buildings so most of countries have fire regulations specifying fire resistance for structural elements. Fire resistance generally has been evaluated by a limited size testing facility. However, the size of columns and beams are different based on various conditions. Especially, the height of column and boundary condition are the main factors that govern the fire resistance of structural elements. To make a basic database for the H-section made of an ordinary grade structural steel, SM 400, an analysis was conducted by using mechanical and thermal properties with a proper theory. The fact findings suggested that the fire resistance for longer and fixed to fixed column were required a new guide line for covering of fire protective materials.

A Study of Fire Resistance According to Boundary Condition of Ordinary Grade Structural Steels

2014 ◽  
Vol 510 ◽  
pp. 97-100
Author(s):  
In Kyu Kwon
Keyword(s):  
Boundary Condition ◽  
High Temperature ◽  
Fire Resistance ◽  
Structural Steels ◽  
Mechanical And Thermal Properties ◽  
Allowable Stress ◽  
Standard Fire ◽  
Fire Engineering ◽  
The Difference ◽  
Fire Curve

Building construction has been developed with an increase of steel application at main members, but the weakness should be resolved with a proper fire resistance. The fire engineering method is regarded as an alternative way to evaluate the fire resistance with mechanical and thermal properties at high temperature. In this paper, the fire resistance of H-section built with ordinary grade structural steels such as SS 400 and SM 490 those are representative structural steels at the construction market were analyzed by the difference of boundary conditions. The study showed that the H-section made of SM 490 represented little difference in reduction ratio of an allowable stress at one hour standard fire curve. And the hinge to hinge boundary condition from both H-sections was the lowest. As the grade of structural steel rises, the difference in an allowable stress at high temperature according to grade of structural steels is inclined to increase.

Analytic Study of Structural Stability at High Temperature of Structural Beam Made of SM 400

2014 ◽  
Vol 977 ◽  
pp. 378-381
Author(s):  
In Kyu Kwon
Keyword(s):  
Heat Transfer ◽  
Thermal Properties ◽  
Thermal Stress ◽  
High Temperature ◽  
Structural Stability ◽  
Fire Resistance ◽  
Analytic Study ◽  
Structural Elements ◽  
Building Fire ◽  
Resistance Performance

A fire occurred in the steel framed building could be yielded an unexpected disasters including loss of human lives and damages of properties. Therefore, to evade the tragedies from the building, fire resistance performance of structural elements is required and specified into each nation’s building regulation. Especially, the structural beam plays a key role to transfer the load applied on the floor to column. In this study, to estimate the fire resistance performance of structural beam made of SM 400, analysis using not only mechanical, thermal properties at high temperature of the SM 400 but theories of heat transfer and thermal stress were conducted. The result of this study showed that as the lengths of beam are increased, the structural stability become getting worse. Therefore, it is not recommended to use the same thickness of fire protective materials derived from prototype’s length, 4100 mm to longer beam.

scholarly journals Study on Transport Packages Used for Food Freshness Preservation based on ANSYS Thermal Analysis

2016 ◽  
Vol 20 (2) ◽  
pp. 95-110
Author(s):  
Ying Yu
Keyword(s):  
Heat Transfer ◽  
Minimum Energy ◽  
Diesel Oil ◽  
Heat Transfer Process ◽  
Cold Chain ◽  
Cost Of Transport ◽  
Minimum Energy Consumption ◽  
Heat Transfer Theory ◽  
Seafood Products ◽  
The Cost

Abstract In recent years, as the Chinese consumption level increases, the consumption quantity of high-value fruits, vegetables and seafood products have been increasing year by year. As a consequence, the traffic volume of refrigerated products also increases yearly and the popularization degree of the cold-chain transportation enhances. A low-temperature environment should be guaranteed during transportation, thus there is about 40% of diesel oil should be consumed by the refrigerating system and the cold-chain transportation becomes very costly. This study aimed to explore a method that could reduce the cost of transport packages of refrigerated products. On the basis of the heat transfer theory and the fluid mechanics theory, the heat exchange through corrugated cases during the operation of refrigerating system was analyzed, the heat transfer process of corrugated cases and refrigerator van was theoretically analyzed and the heat balance equation of corrugated cases was constructed. Besides, this study simulated the temperature field of the corrugated box during transportation. The temperature of the goods was changed through different cooling temperature to calculate the minimum energy consumption, so as to achieve the best refrigeration transport packaging program.

scholarly journals Study on transport packages used for food freshness preservation based on thermal analysis

2016 ◽  
Vol 37 (4) ◽  
pp. 121-135
Author(s):  
Ying Yu
Keyword(s):  
Heat Transfer ◽  
Diesel Oil ◽  
Heat Transfer Process ◽  
Cold Chain ◽  
Cost Of Transport ◽  
Heat Transfer Theory ◽  
Seafood Products ◽  
Food Freshness ◽  
The Cost ◽  
The Heat Balance

AbstractIn recent time, as the Chinese consumption level increases, the consumption quantity of high-value fruits, vegetables and seafood products have been increasing year by year. As a consequence, the traffic volume of refrigerated products also increases yearly and the popularization degree of the cold-chain transportation enhances. A low-temperature environment should be guaranteed during transportation, thus there is about 40% of diesel oil should be consumed by the refrigerating system and the cold-chain transportation becomes very costly. This study aimed to explore methods that could reduce the cost of transport packages of refrigerated products. On the basis of the heat transfer theory and the fluid mechanics theory, the heat exchanging process of corrugated cases during the operation of refrigerating system was analyzed, the heat transfer process of corrugated cases and refrigerator van was theoretically analyzed and the heat balance equation of corrugated cases was constructed.

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