CAJ | 학술논문

针对综合交通枢纽中的半封闭公交枢纽部分出入口少、车辆与人员混杂产生火灾风险问题,以某实际半地下公交枢纽为研究对象,研究极端火灾场景即枢纽中心处公交发生火灾时烟气扩散情况. 采用现场出入口实测数据作为边界条件,选择快速t2火且最大功率为30 MW模拟公交车辆火灾场景. 采用大涡模拟软件FDS分析开启排烟风机和不开启风机工况下枢纽内烟气扩散情况. 研究表明:枢纽的中心处发生公交车辆火灾时,开启枢纽内的防排烟系统能够在6 min中内保证人员的安全疏散. 考虑枢纽高度对烟气层沉降的影响,半封闭高大空间公交枢纽防排烟系统设计可以参考国内地下车库的防排烟系统相关设计规范.
침대종합교통추뉴중적반봉폐공교추뉴부분출입구소、차량여인원혼잡산생화재풍험문제,이모실제반지하공교추뉴위연구대상,연구겁단화재장경즉추뉴중심처공교발생화재시연기확산정황. 채용현장출입구실측수거작위변계조건,선택쾌속t2화차최대공솔위30 MW모의공교차량화재장경. 채용대와모의연건FDS분석개계배연풍궤화불개계풍궤공황하추뉴내연기확산정황. 연구표명:추뉴적중심처발생공교차량화재시,개계추뉴내적방배연계통능구재6 min중내보증인원적안전소산. 고필추뉴고도대연기층침강적영향,반봉폐고대공간공교추뉴방배연계통설계가이삼고국내지하차고적방배연계통상관설계규범.
Fire safety of a semi-enclosed public transportation hub in a comprehensive transportation center was ana-lyzed. Smoke propagation under an extreme fire scenario where fire occurred at the center of the hub was studied. On-site measured data at portals were set to the boundary conditions in a numerical simulation. A quick t2 fire model with a maximum heat release rate of 30 MW was used to simulate a bus fire. Large eddy simulation technology was used to predict smoke propagation under two fire scenarios, where smoke exhaust fans operated or not. Results show that operation of a smoke control system could provide safe evacuation within six minutes when a fire occurred in the center of the hub. Given such results, domestic underground garage smoke control system design specifications should be considered for semi-enclosed spaces such as transit hubs.