特长螺旋隧道火灾烟气流动特性研究  

Numerical Analysis of Smoke Flow Characteristics of Long Spiral Tunnels in Fire Scenarios

作　　者：于建游 YU Jianyou(Yanchong Expressway Construction Preparation Office of Hebei Expressway Group Limited,Huailai 075499)

机构地区：[1]河北省高速公路延崇筹建处,怀来075499

出　　处：《现代隧道技术》2022年第S01期684-690,共7页Modern Tunnelling Technology

基　　金：河北省交通运输厅科技项目——特长螺旋隧道绿色节能与防灾关键技术研究

摘　　要：近年来,我国公路隧道快速发展,隧道的设计理念及施工技术也迎来了不断的变革创新,形态复杂的隧道也不断出现。本文针对延崇高速金家庄特长螺旋隧道,借助数值分析手段,研究了不同火灾工况下隧道内烟气流动、温度场分布及能见度变化规律,探明了特长螺旋隧道火灾时的特性规律。In recent years,with the rapid development of highway tunnels in China,the design concept and construction technology of tunnels have also experienced constant changes and innovations,with complex tunnel forms and difficult construction conditions.Taking Jinjiazhuang long spiral tunnel on the Yanchong expressway as the research object,this paper used FDS fire simulation software to establish numerical models of different tunnel fire conditions,studied the variation law and characteristics of smoke spread,temperature field distribution,visibility in the main tunnel under different fire scales,and gained the fire characteristics of long spiral tunnels.

关 键 词：特长螺旋公路隧道 烟气流动 火灾特性 

分 类 号：U458.1[建筑科学—桥梁与隧道工程]