• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
• /
• 제29권3호
• /
• pp.7-15
• /
• 2023

Purpose: This study was conducted with the aim of presenting spatial planning directions for evacuation spaces based on an analysis of the performance of horizontal evacuation during the early stages of fire incidents in a geriatric hospital. Methods: Based on a review of previous studies, the research model was designed by establishing occupancy conditions, evacuation, and fire scenarios. The analysis model was developed by considering vulnerable areas in terms of evacuation movement and analyzing the results of evacuation performance. Furthermore, the study analyzed the improvement in evacuation performance by arranging refuge areas. Results: The results of the study are as follows. Firstly, vulnerability spots were identified in terms of evacuation performance by schematizing Required Safe Egress Time, Available Safe Egress Time, and their differences. Secondly, the Required Safe Egress Time in the adjacent public spaces along the escape routes of occupants was found to be higher compared to the Available Safe Egress Time. Thirdly, the results of the correlation analysis between the difference in Available Safe Egress Time and Required Safe Egress Time during the early stages of a fire, as well as their constituent factors, demonstrated that user congestion is a more significant factor in compromising evacuation safety than the physical changes in the fire condition. Fourthly, the analysis of evacuation time was conducted by designating refuge areas where occupants can evacuate within a sufficient timeframe. This led to a decrease in the Required Safe Egress Time. Implications: This study is expected to be used as data on the direction of evacuation space planning to improve the evacuation performance of Geriatric Hospital.

• International Journal of Internet, Broadcasting and Communication
• /
• 제16권2호
• /
• pp.255-266
• /
• 2024

The purpose is to evaluate evacuation safety by simulating the toxic effects of hydrogen fluoride leaks in areas surrounding national industrial complexes and to suggest alternatives for areas that do not satisfy evacuation safety. For human casualties caused by hydrogen fluoride leakage accidents, Available Safe Egress Time (ASET) is calculated by the toxic effects quantified with the Areal Locations of Hazardous Atmospheres (ALOHA), an off-site consequence assessment program. The Required Safe Egress Time (RSET) is calculated through Pathfinder, an evacuation simulation program. Evacuation safety is assessed by comparing ASET and RSET. The ALOHA program was used to evaluate the time to reach AEGL-2 concentration in 12 scenarios. The Pathfinder program was used to assess the total evacuation time of the high school among specific fire-fighting objects. Of the 12 accident scenarios, ASET was larger than RSET in the worst-case scenarios 1 and 9. For the remaining 10 accident scenarios, the ASET is smaller than the RSET, so we found that evacuation safety is not guaranteed, and countermeasures are required. Since evacuation safety is not satisfactory, we proposed to set up an evacuation area equipped with positive pressure equipment and air respirators inside specific fire-fighting objects such as the high school.

• International Journal of Internet, Broadcasting and Communication
• /
• 제16권2호
• /
• pp.247-254
• /
• 2024

In this paper, we compare and analyze the evacuation time required at a general hospital using an evacuation simulation program and propose an optimized procedure to improve safety. The paper analyzed the evacuation time of all occupants, including patients who cannot evacuate by themselves. The following four cases were analyzed in order: the width of evacuation stairs is 120cm, 130cm, 140cm, and 150cm. The results of the evacuation simulation showed that the total evacuation time is 1998s, 1796s, 1651s, and 1161s, respectively. For every 10cm increase in the width of the evacuation stairs, the evacuation time decreases by 202s, 145s, and 91s in sequence. The evacuation time decreases as the width of the evacuation stairs increases. However, the rate of reduction in evacuation time decreases. Therefore, simply increasing the width of evacuation stairs cannot significantly improve evacuation efficiency, and it is necessary to choose an appropriate width of evacuation stairs. In addition, all four cases simulations display that after 600 seconds, the evacuees are concentrated in two evacuation stairs, while there are very few evacuees in the other stairs. To solve this problem, it is necessary to disperse the movement route and consider multiple avoidance methods.

• 문화기술의 융합
• /
• 제7권3호
• /
• pp.509-515
• /
• 2021

이 연구는 패스파인더 시뮬레이션 프로그램을 활용하여 학교의 피난 안전성 확보를 위한 효율적인 학급 층별 배치 방안 분석을 목적으로 한다. 경사로와 계단이 함께 설치된 고등학교 5층 건물을 대상으로 층별 인원배치에 따른 REST (Required Safe Egress Time, 피난소요시간)을 분석하여 효율적인 피난 방법과 안전성을 평가하였다. 현재 상태의 인원배치는 기준 RSET을 초과함으로써 피난안전성에 문제가 있다는 결과를 얻었다. 학생들을 3층, 4층, 5층에 배치했을 때 기준 RSET보다 가장 많은 시간을 초과하는 결과를 얻었다. 학생들을 1층, 2층, 3층에 배치했을 때 기준 RSET보다 가장 짧게 피난을 완료하는 결과를 얻었다. 현재의 상태에서 위치별로 피난출구를 지정하여 피난을 유도했을 때 기준 RSET을 단축시키는 결과를 얻었다. 결과적으로 고층 학교 건물에 학생들을 배치할 때는 저층부터 배치하는 것이 피난안전성 측면에서 효과적이며, 화재 시 위치별로 가까운 출구를 활용하여 피난할 수 있도록 피난출구를 지정한 사전 훈련이 필요하다. 향후 연구과제로 특정 위치에 화재가 발생했을 때 해당 위치의 자동방화셔터의 개폐여부에 따른 RSET에 대한 추가적인 연구가 필요하다.

• 대한안전경영과학회지
• /
• 제25권4호
• /
• pp.95-104
• /
• 2023

The purpose of this study is to propose measures to increase evacuation safety by calculating the habitable time using a fire and evacuation simulation program for the Room-escape cafe currently in operation, and comparing and analyzing it with the evacuation required time. Assuming a fire due to overheating of electric heaters in use in front of the warehouse, the habitable time was calculated through fire simulation, and the occupant's evacuation time calculated through evacuation simulation according installation of safety facilities, etc. was compared and analyzed with the habitable time. In the case of escape room cafes with safety facilities installed, evacuation safety was satisfied, but in escape room cafes without safety facilities, the evacuation safety was not secure. As a result of analyzing evacuation safety for each scenario based on the ASET analyzed in the fire simulation, it was found that in scenario 1, evacuation safety was secured and everyone successfully evacuated, while in scenario 2, no one succeeded in evacuation. These results can be said to confirm that the installation of safety facilities is very important in business establishments such as escape room cafes, which become enclosed structures when games are started.

• 한국화재소방학회논문지
• /
• 제29권3호
• /
• pp.13-20
• /
• 2015

초고층 건축물의 수직성 증가는 더 긴 최소피난시간(Required Safety Egress Time, RSET)을 요구하게 된다. 초고층건물에선 계단을 통한 수직이동이 피난경로 상의 대부분을 차지한다. 본 연구에서는 고층 건물에서 반복된 3번의 대피훈련을 시행하고, 영상분석을 통해 피난경로 선택의 변화와 계단실 내 수직 보행속도-밀도의 함수관계를 분석했다. 또한 Pathfinder 피난시뮬레이션을 이용하여 단계적 피난의 방법에 따른 총 피난시간의 변화와 실제 훈련의 결과를 비교 분석하였다. 그 결과 반복적 피난훈련과 교육을 통해 특정 계단 이용률이 6.3%에서 39.5% 개선되었고, 각 피난경로별 피난시간도 단축됨을 확인하였다. 또한 계단실 내 수직 보행속도-밀도의 관계식이 기존의 연구결과와 매우 유사한 s = 1.004 ? 0.288D로 확인되었다. 단계적 피난의 방법에 따라 전층 동시피난에 비해 총 피난시간이 25% 이상 변화할 수 있음을 확인할 수 있었다.

• 한국태양에너지학회:학술대회논문집
• /
• 한국태양에너지학회 2009년도 춘계학술발표대회 논문집
• /
• pp.133-138
• /
• 2009

The purpose of this study is to present an alternative plan in order to reduce the required time to flee from the inside of the gosiwon in danger. The data were derived from changing the width of corridors and emergency exits and the number of stairs in the building EXODUS, which is computer simulation program, The analyzed conclusions from the data are following as below (1) Increasing the exits and the number of stairs are efficient to reduce the accumulated time for standing by. (2) Increasing the number of stairs is efficient to decrease the distance to get out of the building to exit. (3) Increasing the number of stairs is efficient to reduce the time to get out of the building to exit.

• International Journal of Internet, Broadcasting and Communication
• /
• 제14권3호
• /
• pp.182-192
• /
• 2022

This study analyzed the effects of the all-in-one automatic fire shutter (hereinafter referred to as "all-in-one shutter") installed along the fire compartment in a five-story high school building on the evacuation time by using the Pathfinder simulation program. When the all-in-one shutter was added as a new variable, the evacuation time was delayed, indicating insufficient evacuation safety. The evacuation time exceeded the appropriate standard when the evacuation exit was designated to the students in the present state of being placed on the 2nd, 3rd, and 4th floors and the all-in-one shutter was activated. When students were placed on the 1st, 2nd and 3rd floors under the same conditions, the evacuation time was also greatly exceeded. However, when the width of the entrance was set to 130cm, the evacuation time was almost the same as when the all-in-one shutter was not installed. In high-rise school buildings, the bottleneck caused by all-in-one shutters is becoming a major factor in evacuation barriers. To ensure the evacuation safety of school buildings, it has been judged that evacuation education and training to predict the evacuation time required through the all-in-one shutter entrance and induce an evacuation procedure suitable for the standard evacuation time should be carried out in parallel. The implications of this study and suggestions for effective fire compartments and follow-up studies were discussed.

• 국제초고층학회논문집
• /
• 제11권3호
• /
• pp.227-240
• /
• 2022

Under the Korean Enforcement Decree of the Building Act, all high story apartment houses more than 5 stories high are mandated to install a fire evacuation system to ensure safe evacuation from fire accidents and providing quick and easy bidirectional escape route when main entrance is blocked by flame or toxic smoke. However, the current fire evacuation system shows a lack of understanding from residents and thus is widely ignored for having insufficient safety functions, especially vis-à-vis fire emergencies. Studies have found that an alternative evacuation method, the escapable fire evacuation system, has been analyzed for safety evaluation compared with the conventional passive fire escape system and can bring efficient and safer solutions, providing high rise residents escape from fire accidents. Evaluation for safety evacuation has been performed by the Fire Dynamics Simulation and applying Pathfinder simulation. This resulted in providing appropriate escape routes within the safety escape time and allowed for people in high rise building fires to get to safety.

• 한국건축시공학회지
• /
• 제18권4호
• /
• pp.363-373
• /
• 2018

고층 공동주택에서 화재시 현관문을 통해 탈출이 불가능할 경우를 대비해 발코니를 통해 피난이 가능하도록 피난시설을 설치한다. 이는 공동주택 세대의 양방향 피난이 가능하게 하며, 이로 인해 인명피해를 줄일 수 있다. 본 연구에서는 양방향 피난시설인 경량 칸막이, 발코니 대피 공간, 실내형 하향식 피난구의 특징을 살펴보고 이들의 문제점을 개선한 실외형 하향식 피난구를 제시하고 경제성에 대해 분석하였다. 화재 발생 시 피난자는 전통식 피난구를 사용할 때보다 하향식 피난구를 사용할 때 능동적인 탈출 가능 여부를 더 자율적으로 판단 할 수 있다. 따라서 피난자의 피난방식에 따라 피난소요시간에 미치는 영향을 고려하여 계단식과 하향식 피난구를 통한 4가지 피난방식의 피난 소요시간은 시뮬레이션 pathfinder를 활용하여 비교분석하였다. 피난 소요 시간 단축을 위한 적합한 대피방식을 예측 분석 판단하였다. 본 연구의 결과 고층 아파트 하향식 피난구는 계단식보다 총 피난소요시간을 단축할 수 있는 것으로 분석되었다.