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Distribution Laws of Fire Temperature Fields in Immersed Tunnel: A Case Study of Hong KongZhuhaiMacao Bridge Immersed Tunnel Project（沉管隧道火灾温度场分布规律研究——以港珠澳大桥沉管隧道为例）
收稿日期: 2017-12-14
修回日期: 2018-04-09
网络出版日期: 2018-06-01
沉管隧道火灾温度场分布规律研究——以港珠澳大桥沉管隧道为例
Received date: 2017-12-14
Revised date: 2018-04-09
Online published: 2018-06-01
The large testing platform for immersed tunnel is established to analyze the distribution laws of the temperature field and its influencing factors when a tunnel fire breaks out. Meanwhile, the combination method of physical testing (1∶1 fullscale fire test) and numerical calculation FDS are applied. Some conclusions are drawn as follows: (1) Longitudinal wind speed within limits can decrease the maximum temperature of tunnel crown top effectively when fire breaks out in tunnel. (2) The maximum temperature of tunnel crown top and fire behavior are related to fire types obviously. (3) The high temperature resistance safe position of the tunnel equipment is below 3.5 m of tunnel sidewall in case of fire source heat quantity of 50 MW. (4) The fire maximum temperature is positively related to heat release rate (HRR) and longitudinal wind speed.
JIANG Shuping , TIAN Kun , XU Pai . Distribution Laws of Fire Temperature Fields in Immersed Tunnel: A Case Study of Hong KongZhuhaiMacao Bridge Immersed Tunnel Project（沉管隧道火灾温度场分布规律研究——以港珠澳大桥沉管隧道为例）[J]. 隧道建设, 2018 , 38(5) : 719 -731 . DOI: 10.3973/j.issn.2096-4498.2018.05.001
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