铁道标准设计Issue(1)：122-127,6.DOI:10.13238/j.issn.1004-2954.2016.01.027
地铁站台火灾不同排烟模式下排烟效果的数值模拟研究
Numerical-simulation-based Study on Metro Station Platform Fire Smoke Discharging Effect of Different Ventilation Modes
摘要
Abstract
The occurrence of 5 MW fire at the end of the island platform in a Guangzhou metro station is studied with fire dynamics simulation software ( FDS) . Ceiling temperature distribution, temperature and visibility at the height of human eye, carbon monoxide concentration distribution and wind speed distribution at the stairs are analyzed and compared in different ventilation modes to evaluate the compliance of smoke discharging effect with the requirements for safe evacuation. The results show that all the three modes meet the requirements for ceiling temperature and visibility at the height of human eye; the mode with 11 exhaust ports fails to meet the requirements for new wind speed at the stairs. The comparison of diffusion scope of temperature and CO concentration of the three modes finds that the mode with 22 exhaust ports is more effective for smoke control and evacuation.关键词
地铁/站台火灾/数值模拟/排烟模式/排烟效果Key words
Subway/Station platform fire/Numerical simulation/Ventilation mode/Smoke Exhaust effect分类
交通工程引用本文复制引用
毛婷,朱常琳..地铁站台火灾不同排烟模式下排烟效果的数值模拟研究[J].铁道标准设计,2016,(1):122-127,6.基金项目
陕西省教育厅自然科学基金项目(12JK0569) （12JK0569）
西安建筑科技大学自然科学基金项目( JC1208) （ JC1208）
陕西省科技厅自然科学基金项目(2015JM5226) （2015JM5226）
