Distribution Laws of Fire Temperature Fields in Immersed Tunnel: A Case Study of Hong Kong-Zhuhai-Macao Bridge Immersed Tunnel Project

JIANG Shuping1,2 TIAN Kun1 XU Pai1

(1.Chongqing Jiaotong University, Chongqing, China 400074)
(2.China Merchants Chongqing Communications Technology Research & Design Institute Co., Ltd., Chongqing, China 400067)

【Abstract】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 full-scale 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.

【Keywords】 immersed tunnel; full-scale experiment; disaster prevention and mitigation; oil pool fire; wood crib fire; temperature field;


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This Article


CN: 41-1448/U

Vol 38, No. 05, Pages 719-729

May 2018


Article Outline


  • 0 Introduction
  • 1 Research background
  • 2 Fire smoke movement theory
  • 3 Full-scale fire test
  • 4 Results analysis
  • 5 Conclusions and discussion
  • References