漕宝路隧道消防疏散设计分析

Design and Analysis on Fire Evacuation of Caobao Road Tunnel

摘要:

针对漕宝路隧道超长单孔双层结构的特性，消防疏散设计采用“竖向疏散+车行救援”的方案，但现行规范对竖向疏散楼梯间距没有明确规定。为解决楼梯间距量化问题，首先对漕宝路隧道消防疏散设计进行定性和定量分析，然后模拟不同疏散楼梯间距下人员疏散的情况。结果表明：在竖向疏散楼梯间距＞92 m的情况下，一旦发生火灾，在安全出口受火灾烟气影响失效前人员无法完成全部疏散。最后从项目整体消防安全的角度出发，在维持现有主动与被动防火措施的基础上，提出消防疏散设计的建议。

Abstract:

Based on the characteristics of ultra-long single-bore double-deck structure of the Caobao Road Tunnel, the “vertical egress + vehicular rescue” scheme is adopted in the design of fire evacuation. However, there are no clear regulations on the spacing of vertical evacuation stairs in the current codes. To quantify the spacing of the stairs, firstly, the qualitative and quantitative analyses on the design of fire evacuation for Caobao Road Tunnel are conducted. And then the situation of personnel evacuation under different spacings of evacuation stairs is simulated. The result shows under the condition of the vertical evacuation stairwell spacing >92 m, all personnel cannot complete the evacuation before the safety exits fail due to the influence of fire smoke in the event of a fire. Finally, from the perspective of the overall fire safety of the project, the suggestions for fire evacuation design are put forward on the basis of maintaining the existing active and passive fire prevention measures.