• 한국화재소방학회논문지
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• 제30권5호
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• pp.54-59
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• 2016

구조재료 중에서 강재는 불연성 재료이지만 열전도가 높고, 온도상승에 의하여 강성의 저하가 높은 편이다. 일반적으로 강재의 항복강도 및 탄성계수는 $350^{\circ}C$에서 70%, $600^{\circ}C$에서 50% 이하로 감소하기 때문에 고온에서의 철골구조의 재하능력은 급격히 감소하게 된다. 통상 내화구조로 인정받기 위해서는 공인기관으로부터의 품질시험을 거쳐야 한다. 하지만, 실물내화실험은 공간과 시간의 제약, 고비용의 문제점을 안고 있으므로, 본 연구에서는 ABAQUS 프로그램의 유한요소법을 이용한 열해석을 수행하여 압축을 받는 H-형강기둥의 내화실험과의 비교로 해석모델의 신뢰성을 입증하고, 실물실험의 보완책으로의 가능성을 제시한다.

• Steel and Composite Structures
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• 제8권6호
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• pp.491-510
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• 2008

This paper presents a plan and guidelines that were drawn for Korean based research carried out on the fire-resistance of CFT columns. This research was carried out by reviewing the Korean regulations related to the fire-resistance of CFT columns and examining studies which had been made in Korea as well as overseas. The first phase of the study plan was to compare the fire-resistance of square CFT columns without fire protection (obtained through fire-resistance tests and numerical analyses) with estimated values (obtained through fire-resistance design formulas proposed in Korea and overseas). This comparison provided conclusions as outlined below. Fire-resistance tests conducted in this study proved that, when the actual design load is taken into consideration, square CFT columns without fire protection are able to resist a fire for more than one hour. A comparison was made of test and analysis results with the fire-resistance time based on the AIJ code, the AISC design formula and the estimation formula suggested for Korea. The results of this comparison showed that the test and analysis results for specimens SAH1, SAH2-1, SAH2-2 and SAH3 were almost identical with the AIJ code, the AISC design formula and estimation formula. For specimens SAH4 and SAH5, the estimation formula was more conservative than the AIJ code and the AISC design formula. It was necessary to identify the factors that have an influence on the fire-resistance of CFT columns without fire protection and to draw fire-resistance design formulas for these columns. To achieve this, it is proposed that numerical analyses and tests be conducted in order to evaluate the fire-resistance of circular CFT columns, the influence of eccentricity existing as an additional factor and the influence of the slenderness ratio of the columns. It is also suggested that the overall behavior of CFT structures without fire protection within a fire be evaluated through analysis simulation.

• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 1998년도 추계학술발표회 논문 초록집
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• pp.17-19
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• 1998

• 한국화재소방학회논문지
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• 제26권6호
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• pp.15-23
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• 2012

$CO_2$ 소화설비의 소화성능 시험방법에는 직접시험방법이 가장 좋지만, 고비용과 환경문제 그리고 시험절차의 어려움으로 간접시험방법을 사용하는 경우가 많다. 그러나 석유화학플랜트나 원자력발전소와 같은 국가 중요위험시설은 화재가 발생하면 대형피해가 발생할 수 있으므로 직접방사시험을 통해 소화성능을 검증할 필요가 있다. 본 연구는 국가 중요위험시설에 설치된 전역방출방식의 $CO_2$ 소화설비 중에서 표면화재 방호구역과 심부화재 방호구역을 각각 선정하여 $CO_2$ 소화설비의 소화성능을 검증해 보았다. 소화성능은 방호구역 내에 방사된 $CO_2$의 농도가 설계농도기준(NFSC 및 NFPA)에 만족해야 그 성능을 인정받을 수 있다. 여기서, 설계농도는 $CO_2$ 소화약제가 화염을 제어할 수 있는 소화농도에 여유율 20 %를 감안한 농도를 의미한다. 시험결과 표면화재와 심부화재 방호구역 모두 $CO_2$ 설계농도를 확보하고 있음을 확인하였고 심부화재의 경우에는 20분 이상 설계농도가 유지되었다. 본 연구를 통해 국가 중요위험시설에 대한 직접방사시험 방법 및 판정방법을 소개하였고 향후 이와 같은 국가 중요위험시설에는 직접방사시험을 통해 소화설비의 신뢰성을 검증해야 할 필요성을 제기하였다.

• 한국화재소방학회논문지
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• 제26권1호
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• pp.16-22
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• 2012

화재시험에 있어서 정확한 발열량의 측정은 시험체의 화재 안정성을 결정하기 위한 중요한 정보이다. 발열량 측정값은 측정 인자들의 오차에 기인하여 영향을 받는다. 본 연구에서는 한국철도기술연구원에 설치된 룸코너 시험기에 대한 불확도의 인자를 분석하였고 이를 이용하여 KTX 내장재 화재시험의 발열량 측정 불확도를 계산하였다. 화재 발열량 불확도 계산 결과, 화재시작단계에서 불확도가 매우 높은 값으로 나타났고 화재가 성장하면서 불확도는 점차적으로 감소하였다. 불확도 인자들 중 산소 농도가 발열량 측정 불확도에 가장 크게 기여하는 것으로 나타냈다.

• 한국화재소방학회논문지
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• 제24권6호
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• pp.89-97
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• 2010

최근 건축환경의 소화설비에는 배관의 경량화, 내진화, 무용접화를 요구한다. 이러한 요구사항을 만족할 수 있는 경량 스테인리스 강관 및 그 이음쇠는 이미 독일, 네덜란드, 대만, 호주, 미국, 일본 등에서 소화설비용으로 사용하고 있다. 이에 따라 그 이음쇠가 소화설비의 배관으로 사용될 수 있는지를 판단하고자 성능평가를 수행하였다. 성능평가로서 진동시험, 수격시험, 굽힘시험, 화재시험 등을 수행하였다. 시험결과 소화설비에 사용할 수 있다고 판단되었고 그 수명은 건축물의 수명 이상 사용할 수 있음을 확인할 수 있었다.

• 한국산업융합학회 논문집
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• 제22권2호
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• pp.155-161
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• 2019

Recently, increases in major disasters such as fires, earthquakes and typhoons have raised public expectations for safety. In addition to this increase in expectations of safety, the government continues to push for more manpower and better treatment for firefighters who are operating in the disaster scene. Despite the improvement of working conditions and increased welfare for firefighters, however, the incidence and turnover of various mental diseases continues to increase. It is reported that many of the diseases such as post-traumatic stress disorder and the turnover of firefighters are due to a mismatch in individual's personality and work environment. In this study, 108 firefighters were evaluated for their vocational aptitude in the new curriculum. Based on the analysis results, new firefighters were proposed to provide employment and education training improvements, and to provide job security suitable for the individual's personality type through the introduction of the vocational aptitude test for firefighters who are working in the fire service. In addition, we would like to use the vocational aptitude test as a material for reducing post-traumatic stress disorder and increasing turnover through long-term tracking and observation, rather than from a one-off perspective.

• 대한건축학회논문집:구조계
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• 제34권4호
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• pp.35-42
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• 2018

This study evaluated the fire resisting capacity and post-fire serviceability of the concrete beams retrofitted by near surface mounted method(NSM) using GFRP plates. Main parameters in the test are grout materials and fire exposure. For the test, two types of grout materials between concrete substrate and GFRP plate were used; flame resisting epoxy and filling mortar. Four RC beam specimens were made and two of them were exposed to fire according to real scale fire curve proposed KS F 2257. After the fire exposure test, flexural test were performed to investigate the flexural performance of concrete beams including strength and deformation. From the test results, it was found that the beam retrofitted by NSM-GFRP presented higher flexural strength than that of the beam without retrofit, which indicates NSM-GFRP retrofit technologies is effective to maintain flexural strength even after fire exposure. In addition, the specimens grouted by epoxy showed good performance in strength but bad performance in ductility.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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• pp.48-50
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• 2013

In this study, Car fire for test using ISO 9705 10MW Large Scale Calorimeter. Especially, study on the underground parking for the fire resistance performance. The underground parking lot of the fire resistance regulations in according to with the standard heating curve in Korea. Because of this burning car through experiments to the propose a new heating curve.

• 설비공학논문집
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• 제27권6호
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• pp.307-312
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• 2015

The sandwich panel is commonly used domestically because it's less costly and easier to handle. But fires have frequently occurred in buildings employing sandwich panels, such as the fires in Eecheon cold storage and in Gwangju Pyungdong industrial zone. Sandwich panels with steel plates on their surface prevent fire water from penetrating to the fire source, which makes it difficult to extinguish a fire in a timely manner. Toxic gas generated from some insulation material leads to serious loss of life and property. This study is intended to develop an extinguishing system for sandwich panels, thereby reducing the fire risk. Fire water and volume were determined in the wake of the study on the structure of a sandwich panel extinguishing system, and improvement and testing of the fire characteristics of the sandwich panel. Based on such study and test, a fire model test was conducted. Consequently, the sandwich panel with extinguishing system was proven to have a reduced fire risk, compared to traditional or fire retardant panels.