Sponsor(s): China Railway Tunnel Consultants Co.,Ltd.
12 issues per year
Current Issue: Issue 05, 2018
Tunnel Construction was hosted by China Railway Tunnel Consultants Co.,Ltd. It mainly publishes research results and advanced technologies in tunnels and underground engineering and related fields; the content of the publication is based on practical technology, taking into account experiments, research and comprehensive reviews, designing tunnels and underground works in railways and highways, and related institutional projects, Water conservancy projects, geotechnical engineering, engineering blasting, engineering materials, engineering machinery, engineering management and other majors. Domestic and international scientific and technological information and industry trends in related fields.
Distribution Laws of Fire Temperature Fields in Immersed Tunnel: A Case Study of Hong Kong-Zhuhai-Macao Bridge Immersed Tunnel Project
Tunnel Construction,2018,Vol 38,No. 05
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.