河南城建学院学报
河南城建學院學報
하남성건학원학보
JOURNAL OF PINGDINGSHAN INSTITUTE OF TECHNOLOGY
2015年
1期
74-78
,共5页
高层建筑%火灾烟气%机械排烟%数值模拟%影响因素
高層建築%火災煙氣%機械排煙%數值模擬%影響因素
고층건축%화재연기%궤계배연%수치모의%영향인소
high-rise buildings%fire smoke%mechanical exhaust%numerical simulation%factors
通过FDS软件对高层建筑火灾进行实况模拟，结合模拟所得数据分析单排量、排烟口位置、排烟口数量、起火房间位置等不同因素对机械排烟效果的具体影响。结果表明：单位面积排烟量的提高可以加快烟气的排出；排烟口设于顶棚比侧壁排烟效果更为稳定，实际中吊顶高度在2m以下时，不宜采用侧壁排烟。本模型中，条形走廊机械排烟受排烟口数量约束不大，但对于其它格局的建筑结论或许不同。对于条形走廊，排烟量相同，起火房间位于两排烟口之间位置时排烟效果相对较好。
通過FDS軟件對高層建築火災進行實況模擬，結閤模擬所得數據分析單排量、排煙口位置、排煙口數量、起火房間位置等不同因素對機械排煙效果的具體影響。結果錶明：單位麵積排煙量的提高可以加快煙氣的排齣；排煙口設于頂棚比側壁排煙效果更為穩定，實際中弔頂高度在2m以下時，不宜採用側壁排煙。本模型中，條形走廊機械排煙受排煙口數量約束不大，但對于其它格跼的建築結論或許不同。對于條形走廊，排煙量相同，起火房間位于兩排煙口之間位置時排煙效果相對較好。
통과FDS연건대고층건축화재진행실황모의，결합모의소득수거분석단배량、배연구위치、배연구수량、기화방간위치등불동인소대궤계배연효과적구체영향。결과표명：단위면적배연량적제고가이가쾌연기적배출；배연구설우정붕비측벽배연효과경위은정，실제중조정고도재2m이하시，불의채용측벽배연。본모형중，조형주랑궤계배연수배연구수량약속불대，단대우기타격국적건축결론혹허불동。대우조형주랑，배연량상동，기화방간위우량배연구지간위치시배연효과상대교호。
A live simulation is performed by using FDS software for high-rise building fires. Specific effects on mechanical smoke effect are discussed combined with the effects of different factors simulating specific single displacement, exhaust port location, number of discharges, fire room location and other mechanical smoke effect resulting data. The results show that increasing the amount of smoke per unit area can speed up the ex-haust fumes;the effect is more stable for the smoke exhaust port located on the roof than that of smoke exhaust port located on the side wall. When the ceiling height is less than 2m, sidewalls smoke exhaust should not be adopted. In this model, straight corridor mechanical exhaust is not constrained by the amount of the exhaust ports, but it might be different for the other buildings. For the bar corridor, with the same amount of smoke, when the room on fire is located between the two exhaust ports, the smoke exhaust is relatively better.
