地下空間での付室加圧煙制御における集合竪シャフト設計法に関する研究

摘要

This study examined the pressurization smoke control method in the congregated vertical shaft in case of an underground fire. The pressurization smoke control can secure a refuge route by preventing an invasion of smoke to lobby. The congregated vertical shaft exhaust system is a method to shut smoke out of a room. However, it can happen that smoke exhausted from a lower floor leaks from an exhaust opening of an upper floor congregated vertical shaft. Therefore, in this study, for the purpose of grasping the behavior of the leakage of smoke in congregated vertical shaft with pressurization smoke control system, an equation to determine the rate of smoke leakage from the dimension of the building and the behavior of the fire is shown theoretically. Furthermore, a simple method for the design of the shaft setup height and the shaft cross-section area is proposed from the viewpoint of prevention of smoke leakage.%本論文では、地下空間の火災時における煙制御方法として付室加rn圧煙制御を用いた場合の集合竪シャフトにおける漏煙性状を検討し、rn集合竪シャフトの設計法を提案した。rn本論文で示した漏煙量計算法の結果を精算法による結果と比較し、rn安全側であることを確認した。