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랙크식창고 스프링클러설비의 배관설계방식 검토를 통한 최적설계방안 연구
이유식(Lee, You-Sik),곽지현(Kwark Ji-Hyun),김형석(Kim Hyeong-Seok),유동균(You Dong-Kyun),안영철(Ahn Young-Chull) 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.2
The accurate design of the sprinkler system is very important for a rack-type warehouse because it has high fire loads and it is very difficult to suppress the fire due to the high loads. In this study, the hydraulic calculation using the PIPENET program was performed and the results were compared and analyzed to investigate the optimal design method according to the piping design methods for the automatic rack-type warehouse. The design methods are about the design of the pipe schedule system based on the fire safety standard, the design for the efficient construction, and the design using the upper limit value of piping. The design of the pipe schedule system, which adopts a predetermined piping size according to the number of heads, is easy to design, but there is a concern that the quantity of water is increased and the water source is soon exhausted. The design for the efficient construction, which has the diameter of the end portion is largely applied to improve the construction efficiency, increases the construction cost slightly but the required amount of water is decreased. The design using the upper limit value of piping, which limits the maximum size of piping to be less than a certain value, can save the construction cost as well as the quantity of water, so it improves safety and reliability of the sprinkler system.
경보방식에 따른 고층건축물의 효율적 피난방안에 관한 연구
김은지(Eun Ji Kim),유동균(Dong Kyun You),여성구(Seong Gu Yeo),안영철(Young Chull Ahn) 대한설비공학회 2018 대한설비공학회 학술발표대회논문집 Vol.2018 No.6
When a fire occurs in a high-rise building, it leads to a large-scale evacuation, and evacuees escape through staircases at the same time. This leads to congestion in the staircases, resulting in stagnation of the evacuation. In this study, evacuation scenarios were classified into three types in order to analyze the evacuation efficiency according to the difference of the alert method. The study applied alert method that simultaneously alerts all floors of buildings, priority alert method that gives priority alert to the ignition layer and four layers directly above it and newly applied the alert method(Hereinafter referred to as “cross alert method”) of issuing the intersection priority alert for every certain number of floors. In addition, the most effective time difference was obtained by analyzing the evacuation simulation results in the case of the priority and the cross alert method. As a result, alert at once was the fastest alert method in spite of the largest number of congestion times, followed by the cross alert method and the priority alert method. In the priority and the cross alert method, the evacuation started late due to the difference of the alert time, the final evacuation time was further delayed.