多点进出型城市地下快速路的人员疏散通道设计  

Design of escape and evacuation passageway of multi-point access underground expressway

作　　者：林志[1] 孙鑫阳 苏培循 邵羽 Lin Zhi;Sun Xinyang;Su Peixun;Shao Yu(College of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Guangxi Traffic Design Group Co.,Ltd.,Guangxi Nanning 530029,China)

机构地区：[1]重庆交通大学土木工程学院,重庆400074 [2]广西交通设计集团有限公司,广西南宁530029

出　　处：《消防科学与技术》2023年第3期339-344,共6页Fire Science and Technology

基　　金：国家自然科学基金(52078089,51904043,52078090);重庆市自然科学基金(cstc2021jcyj-msxmX1075);重庆市教育委员会“成渝地区双城经济圈建设”科技创新项目(KJCX2020031)。

摘　　要：为提高对多点进出型城市地下快速路火灾烟气蔓延规律的认识,丰富国内有关城市地下快速路人员逃生疏散通道的研究,通过火灾烟气模拟试验确定可用疏散时间(ASET),利用数值模拟软件,建立上海北横通道的逃生通道仿真模型,通过对不同的逃生通道门宽与间距组合,入口和出口各设计208种方案,研究不同逃生通道设计方案的人员疏散效果。结果表明:多点进出型城市地下快速路最不利火灾场景下,随逃生通道间距减小、门宽增加,逃生通道的疏散效率不断提高,但门宽增加至1.4 m时疏散效率基本不再提高。结合实际场景研究,规范中的逃生通道间距设计应缩短,逃生通道门宽设计应增大,并给出上海北横通道泸定路枢纽段逃生通道设计推荐方案。In order to improve the understanding of the fire smoke spread law of multi-point entry and exit urban underground expressways,and enrich the domestic research on the escape and evacuation of urban underground expressways,this paper first determines the available evacuation time through the fire smoke simulation test,and then uses numerical simulation to establish the simulation model of the escape passage of Shanghai Beiheng passage.By combining different escape passage door widths and spacings,a total of 416 different schemes are designed to study the personnel evacuation effect of different escape passage design schemes.The results show that under the most unfavorable fire scenario of the multi-point access urban underground expressway,the evacuation efficiency of the escape passage is continuously improved with the decrease of the escape passage spacing and the increase of the door width,but when the door width increases to 1.4 m,the evacuation efficiency is basically no longer improved.In combination with the actual scene study,the design of escape passage spacing in the specification should be shortened,and the design of escape passage door width should be increased,and the recommended design scheme of escape passage in Luding Road hub section of Shanghai Beiheng Passage is given.

关 键 词：地下快速路 疏散效率 门宽 间距 

分 类 号：X913.4[环境科学与工程—安全科学] U459.2[建筑科学—桥梁与隧道工程]