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《China Safety Science Journal》 2012-09
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Exploring and Improving RSET Calculation Method in Road Tunnel Fire

LI Wei-ping1 XU Yong2,3 LIAO Shao-ming2(1 Zhejiang Transportation Planning and Design Institute,Hangzhou Zhejiang 310006,China 2 Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China 3 Department of Construction Engineering,Changzhou Institute of Engineering Technology, Changzhou Jiangsu 213164,China)  
It was held that RSET is a important calculation parameter in fire safety evacuation design,and that the current calculation of RSET in road tunnel fire evacuation design mainly adopts the calculation theory of building fire,which is relatively unreasonable.Based on the spatial characteristic of road tunnel structure,the time gathering towards passageway gate and time evacuating from the gate of escaping individual were calculated and analyzed.Consequently a criterion for judging evacuation blockage was proposed,and a improved calculation method of RSET was worked out,which was applied in a calculation case for comparative analysis.Case analysis demonstrates that the improved method calculation results are closer to computer simulation results than that by traditional method,and that the method is more suited to the evacuation calculation of road tunnel,particularly to the situation of low crowd density and high evacuation flow rate.
【Fund】: 国家自然科学基金资助(51078292);; 浙江省交通运输厅科技项目(2010H02);; 交通部钱江隧道科技项目(2009-353-333-340)
【CateGory Index】: U458
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