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권인규,Kwon, In-Kyu 한국강구조학회 2010 韓國鋼構造學會 論文集 Vol.22 No.6
최근 강구조 건축물에 대한 상온 및 화재 시의 구조거동에 관한 요구사항이 증대되는 추세에 있으며, 내화구조에 관한 요구조건을 충족시키기 위해서는 내화설계가 요구된다. 내화설계에는 법규, 기준 등에 따라 평가되는 시방적 내화설계와 화재 발생 시 구조물 거동을 평가하는 성능기반 공학적 내화설계로 대별된다. 현재 성능기반 공학적 내화설계는 세계적인 추세로 활발히 적용되고 있으나, 국내에서는 아직 적용되지 못하는 실정이다. 따라서 본 논문에서는 성능 기반 공학적 내화설계의 지침 마련의 기반자료 확보를 위하여 H-형강 보부재와 H형강의 웨브에 콘크리트로 충전된 보부재를 대상으로 한계온도 설정을 목적으로 한다. 재하가열시험을 통하여 H-형강 보부재의 한계온도를 도출하였고, 한계온도는 적용 하중비에 좌우되는 것을 확인하였다. H-형강 웨브에 콘크리트가 충전된 하중비 80%, 60% 및 50%의 시험체는 모두 3시간의 내화성능을 보였다. Recently the requirements of the buildings built with structural steel were increased in terms of structural stabilities and fire resistance at severe fire conditions. To meet the building regulations of fire resistance, a fire design is needed. This is of a prescriptive method and a performance engineering based method. Recently a simple calculation method as one of performance based engineering method is very popular because of its ease for an application in building built with structural steel. But, in Korea the performance based engineering method is not allowed yet. Thus it is needed to make a guideline for the performance based engineering method. The purpose of this study is to establish the limit temperature derived from structural beams made with both a H-section and a H-section filled with concrete at the web and derived the limit temperatures from beams made with H-sections and found out that the limit temperatures from two kinds of specimens depended on the applied loads and the specimens filled with the concrete represented 3 hour fire resistance in the range of 80%, 60%, and 50% of the maximum load.
제조 방식에 따른 건축용 내화강재의 고온 시 기계적 특성 평가
권인규,Kwon, In Kyu 한국강구조학회 2007 韓國鋼構造學會 論文集 Vol.19 No.2
건축용 내화강재는 화재와 같은 고열환경에 노출되었을 때 일반 구조용 강재에 비해서 내력유지 성능이 우수하도록 개발된 고성능 강재이다. 이와 같은 건축용 내화강재를 적용한 구조체가 화재에 노출되었을 때 구조적 거동을 정확하게 평가하기 위해서는 고온에서의 항복강도, 탄성계수 변화 등의 기계적 특성치가 요구된다. 따라서 본 연구에서는 압연과 TMC방식에 의한 두 가지 두께를 대상으로 건축용 내화강재의 기계적 특성 도출을 위하여 고온인장시험을 수행하였으며, 그 결과 제조방식에 따른 고온에서의 큰 기계적 특성 차이는 없는 것으로 판단되었다. A fire-resistant steel with enhanced load-bearing capacity has been developed to enable structural elements such as columns and beams withstand exposure to severe fire conditions. To precisely evaluate the fire-resistant performance of structural elements that compose fire-resistant steels, mechanical properties such as yield strength and elastic modulus are essential. To obtain the mechanical database of fire-resistant steels at high temperatures, tensile tests at high temperatures were conducted on steels of two kinds of thicknesses. The results showed that the thickness difference could not affect the mechanical properties at a high temperature.
권인규(Kwon In-Kyu) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.4
Structural steels have been used as a major constructional materials to satisfy the needs toward a higher, longer building. But the evaluation of fire resistance for structural steel elements depend on fire tests with fire furnace. In real situation, the structural steel elements such as columns and beams are carried design forces, axial forces and moments, respectively. But when the fire resistance was evaluated through fire tests, no takes account of the loading amounts usually. To make a general rule for an evaluation procedure of fire resistance for structural steel elements when exposed to fire, the limit temperature of those is needed and it is very importance to assure that the fire resistance mainly depends on the loading amount for each structural element. To prepare the basic data for limit temperatures of structural elements, steel columns made of circular, rectangular steel tube were used and H sections are used as a beam. The loading ratios for axial force and moment were 100%, 80%, 60% and 50%. The results of fire tests with load were shown that the fire resistance relied on the magnitude of loading and the limit temperatures were lower when the higher loading was applied than the lower loading done.
콘크리트 충전강관 기둥부재의 내화성능에 관한 해석 및 실험적 연구
권인규(Kwon In-Kyu) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.11
Concrete filled Steel Tube(CFST) is one of solution in high-rise buildings in terms of higher structural stability and an enhanced fire resistance according to higher heat capacity of concrete. Many studies on the CFST have been conducted since 1990 in the Europe, Japan, and Canada. But in Korea, the study on the fire resistance of the CFST is focused on establishment of equation of fire resistance. But the relationships between temperature of perimeter of tube and inner concrete filled at the tube are still uncertain.. Therefore, to compare the temperature differences in the tube and concrete filled steel tube, the analysis and fire test with the same model of steel tube and concrete filled steel tube were conducted and got the followings; the temperatures from steel perimeter and concrete filled into the tube and the comparison of the CFST between analysis and fire test showed the very same values during 18 minutes and the temperatures of concrete are not excceed 100℃.
권인규 ( Kwon In-kyu ) 한국건축시공학회 2018 한국건축시공학회 학술발표대회 논문집 Vol.18 No.1
Finishing materials are very important to restrain fire spread from a compartment to another in a fire situation. Therefore, the evaluation of combustible properties for the combustible material is essential to apply finishing materials into a generic buillding or s special occupancy structure. In this study, the testing methods for evaluation of combustible performance of finishing materials of domestic were surveyed in order to prepare the guideline of application of finishing materials in nulear power plant.
강구조 건축물의 성능적 내화공학설계지침 개발에 관한 연구
권인규(Kwon In-Kyu) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.6
Fire design methods of steel framed buildings have been divided two categories such as a prescriptive method and a performance-based fire engineering design usually conducted through a science and an engineering technology. But the latter was rapidly developed around the world and it is inclined to place as a main method for determination of fire resistance performance of the steel based buildings. For an alternative of fire resistance evaluation in Korea against prescriptive regulation, we suggested the draft of specification of fire performance-based engineering design that fire resistance performance be evaluated by using a scientific and engineering knowledge and that be proved by the authorities of Ministry of Construction and Transportation. And to analyze the fire resistant performance of structural stabilities at high temperature condition for lager specimens than those defined at KS F 2257-1, I have suggested an analytic computer program using the mechanical properties of high temperature and boundary conditions of structural steels.