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Journal of the Korean Society of Hazard Mitigation 2012;12(4):143-148.
Published online August 31, 2012.
혹한기 연돌효과에 의한 초고층 피난문 개폐장애에 대한 연구
김진수, 이의평
A Study on the Difficulty of Door Opening on Very High Floors Due to Stack Effect in Cold Season
Jinsoo Kim, Eui-Pyeong Lee
Abstract
Super high-rise residential buildings are more subject to stack effect through the door gaps of elevators in cold season due to the more number of elevators than in low buildings, and to reduce those effects, air tightness of skin is essential, but that is released in case of fire because the exit doors on the 1st floor are to be fully open for egress of people and entrance of fire brigades. This paper offers the calculation model to estimate the inconvenience and difficulty of door usage in normal and emergency time, the method to solve the difficulty, and the validity of the method with simulation.
Key Words: Stack effect; Pressure differential distribution; Equalization; Overpressure release damper; Wall leakage area
요지
초고층 주거용 건물은 저층건물에 비해 승강기의 수가 많기 때문에 혹한기에 승강기 문틈을 통해 전달되는 연돌효과의 영향을 더 많이 받으며, 이러한 영향을 줄이기 위해 외피의 기밀도를 높여야 하지만, 화재 시에는 피난과 소방대의 진입을 위해 1층의 외피를 활짝 열어야 하기 때문에 외피기밀은 모두 해제된다. 이 논문에서는 연돌효과에 의한 평시사용상의 불편과 비상시 피난 장애 정도를 예측하는 계산모델을 제시하고 피난문 개폐장애를 해소하는 방법을 제시하였으며, 시뮬레이션으로 그 타당성을 검증하였다.
핵심용어: 연돌효과; 차압분포; 균압화; 과압배출댐퍼; 외피누설틈새면적
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