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隧道建设(中英文) ›› 2018, Vol. 38 ›› Issue (5): 719-731.DOI: 10.3973/j.issn.2096-4498.2018.05.001
JIANG Shuping1, 2, TIAN Kun1, *, XU Pai1
蒋树屏1, 2, 田堃1, *, 徐湃1
摘要:
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.
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