纵向通风排烟模式下城市环隧的疏散设计

摘要

The characteristics and development status of city ring tunnel was analyzed.The problems of evacuation design of city ring tunnel under longitudinal ventilation mode were put forward.Combing with an engineering case,computer simulation was used to analyze the feasibility of city ring tunnel evacuation design plan,and get conclusions and suggestions.By analyzing the smoke spreading feature of city ring tunnel longitudinal ventilation,and comparing the features of people evacuation and vehicle evacuation,suggestion of using vehicle evacuation as much as possible was made.%分析了城市环隧的特点以及发展现状,提出了纵向排烟条件下城市环隧的疏散设计难点.结合实际工程案例,采用计算机仿真模拟技术分析了城市环隧疏散设计方案的可行性,并得出了结论和建议.通过分析城市环隧纵向排烟时烟气流动特性,对比人行疏散方式及车行疏散方式的特点,提出应在条件允许的情况下尽量采用车行疏散.