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대형 건물에서의 화재시 연기 거동 및 거주자 피난에 관한 수치해석 연구
최상열,유홍선 중앙대학교 미래신기술연구소 2003 미래신기술연구소 논문집 Vol.12 No.1
본 수치해석 연구는 대형 건물에서의 화재 발생시 화재공간 내부의 온도장 및 연기거동을 해석하고, 거주자들의 피난을 모사하기 위해 FDS 코드와 SIMULEX 프로그램을 각각 사용하여 수행하였다. 서울의 대형 OO 빌딩의 지상 19 층과 지하 2 층을 해석 대상으로 하였으며, 초기 화재의 발생은 Fast 화재 성장모드로 가정하였고, 거주자의 다양성을 적용하여 피난을 해석하였다. 화재 발생 후, 지상 19 층의 경우 4 분여가 경과하면 국부적으로 천장 온도가 300 도 이상으로 상승하는 부분이 발생하게 되고, 사람의 키 높이 정도에서 가시거리가 5m 이하로 나타나게 되어 피난에 장애를 초래하는 것으로 나타났다. 지하 2 층의 경우는 아트리움의 영향에 의해 연기가 전체 공간으로 퍼져나가지 않았으며, 1.8m 정도의 높이까지 연층이 하강하는데 걸리는 시간은 약 5분 정도가 소요되었다. Smoke movement, temperature field, and evacuation of occupants in the nineteenth floor and the second floor underground of a large building on fire are studied. FDS code and SIMULEX program are used for the analysis of smoke movement, temperature field and evacuation of occupants, respectively. Fire growth mode is assumed as 'Fast' in the initial fires, and people characteristics are considered to account for the various evacuation feature. In case of fire on the nineteenth floor, after 4 minutes have passed, the region where the ceiling temperature is above 300℃ locally appears and visibility distance at the height of an adult becomes below 5m. This visibility distance causes the difficulty in people's evacuation. In case of a fire on the second floor underground, smoke did not spread over the whole area due to the geometry of atrium and it takes 5 minutes for the smoke layer move down to 1.8m vertical distance.
한상훈,최만용,조홍동,박중열,황선일 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.1
A failure mode in the beam strengthened with a high modulus plate appears as a interface debonding failure or ripping-off failure. This failure mode means that plate is separated from adhesive or concrete before displaying its own ability. Therefore, as a method for controlling a premature failure, it is need to use a general anchorage implement. We conducted bending tests for reinforced concrete beams strengthened with CFRP. The experimental variables were a concrete strength, reinforcement ratio, cover thickness of concrete and length ratio of CFRP for a pure span. A failure load, failure mode, load-deflection curve and strain response at different distances from a cut-off of CFRP and strain distribution curve were measured to determine the bond development length. Also, the bond development length was compared with Nguyen’s model and British Standard specification.
탄소섬유보강판의 홈삽입에 따른 철근콘크리트 보의 보강효과
한상훈,최만용,조홍동,박중열,황선일 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.1
This paper presents a feasibility study of an alternative strengthening method by slot-bonded CFRP plates for reinforced concrete beam. A total 14 reinforced concrete beam were constructed, tested and the response of the beams in terms of deflection, strains, failure load and failure mode were examined. Each specimen was initially loaded for 75% of ultimate load, cracked specimen were strengthened with CFRP plate and then tested until complete failure. Test variables included the strengthening method, steel ratio and strengthening length, and the effects according to each test variables are analysed. The experimental results show that proposed methods can increase the flexural strength and stiffness of the beam significantly. Also, the failure of the specimens strengthened by the proposed method are more ductile than externally bonded specimen.
김갑환,김홍배,홍봉희,김기영,배종욱,최진오,김두열,이영기,박영만,박강태,손행대 한국경영과학회 1995 經營 科學 Vol.12 No.3
The Pusan Container Terminal faces a rapid increase in berthing time of container ships as well as in waiting time of external trucks, which is due to an absolute lack of yard space. This research is focused on the development of a decision support system for the planning of the container terminal yard assignment so that the yard space would be utilized most effectively. Efforts should be given to the reasonable assignment of the yard storage and the dynamic adaptation to the ever changing environment. The software introduced here is based o the know-how of the field exports and its framework takes the approach of the hierarchical decision making.
Hong Yeol Kim,Huhn Pal Moon,Im Soo Choi,Kyung Ho Kang,Soo Yeon Cho,Hee Woon Park,Hung Goo Hwang,Hae Chune Choi,Nam Kyu Park,Sae Jun Yang,Moon Tae Song 한국육종학회 2003 한국육종학회지 Vol.35 No.3
Kwanganbyeo is a japonica rice variety developed from the cross between Namyang 7 and SR14779-HB234-31, anelite line derived from the cross between Cheonmabyeo and Aichi 37 at the National Crop Experiment Station, RDA, and washi-tecture and light-dark gre
Hong Yeol Kim,Huhn Pal Moon,Im Soo Choi,Kyung Ho Kang,Hee Woon Park,O Young Jeong,Hung Goo Hwang,Hae Chune Choi,Sae Jun Yang,Hae Yeong Ryu,Moo Nam Chung 한국육종학회 2003 한국육종학회지 Vol.35 No.3
Junganbyeo is a japonica rice variety derived from a cross of Namyang 72* Hapcheon 1 by the rice breeding team ofNational Crop Experiment Station, RDA, in 1999 and was released in 2000. This is a medium-early variety with growth durationtdark gren leaves.
Hong Yeol Kim,Huhn Pal Moon,Im Soo Choi,Kyung Ho Kang,Hee Woon Park,O Young Jeong,Hung Goo Hwang,Hae Chune Choi,Sae Jun Yang,Hae Yeong Ryu,Moo Nam Chung 한국육종학회 2003 한국육종학회지 Vol.35 No.3
Junganbyeo is a japonica rice variety derived from a cross of Namyang 72* Hapcheon 1 by the rice breeding team ofNational Crop Experiment Station, RDA, in 1999 and was released in 2000. This is a medium-early variety with growth durationtdark gren leaves.