Variable position simulation experiment platform system for cross fire on multi-lane highway tunnel

Abstract

The invention discloses a variable position simulation experiment platform system for a cross fire on a multi-lane highway tunnel, comprising a highway tunnel simulation platform to simulate a fire inany cross position on a multi-lane highway tunnel, and a test system; a simulated fire may move across a rail and may be fixed; the test system includes fuel mass loss, tunnel interior temperature field and wind speed test systems and experimental process images. The system of the invention can simulate a fire occurred in any cross position of a multi-lane highway tunnel; platform section shape,fuel type, fire scale, coating layer heat-insulating layer, height between a fire and the floor of the tunnel and other data are set according to related theories based on actual tunnel conditions, confidence level and accuracy are ensured, and the defects of all-size fire experiments are avoided. The system can also provide real-time fire process all-data recording and is significant to the development and improvement of highway tunnel and even railway tunnel operations and fire rescue evacuations.

Description

technical field [0001] The invention belongs to the technical field of structural engineering construction simulation research, in particular to the technical field of traffic tunnel engineering fire safety research, in particular to an experimental platform system for simulating fires at different locations in multi-lane highway tunnels. Background technique [0002] As a key part of the road or road traffic system, road tunnels have been widely used in road construction due to their significant advantages in overcoming obstacles, improving alignment, shortening driving distance, and protecting the environment. According to statistics, by the end of 2016, China The total number of highway tunnels is 15,181, with a total length of 14,039.7km, and it is still in a growing trend. The huge number and length mean that it is necessary to pay more attention to its safety. For tunnels, fire is the most harmful disaster, and once it occurs, it will cause immeasurable losses. For roa...

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Problems solved by technology

[0004] It can be seen that the current research on highway tunnel fires mainly focuses on the basic changes of fire scenes and smoke flow control under the influence of different fuels, different slopes, different tunnel section shapes, and different tunnel structural forms. Southwest Jiaotong University Wang Feng, University of Science and Technology of China Ji Jie, Tang Fei, etc. have carried out certain numerical model research, but there are few experimental simulation studies. Only China University of Science and Technology has carried out certain experimental research on it, but it has three typical defects. One is that it uses rectangular The section replaces the arched tunnel section, ignoring the restrictive effect of the tunnel arch on the flame plume. The second is that it uses methanol and propane as combustibles, and uses incense as a smoke tracer to replace the main combustibles in road tunnel fires. Gasoline and diesel oil are distorted from the actual tunnel fire situation in terms of smoke and dust composition, smoke layer thickness, and fire scene restoration. Therefore, in general, most of the current research on horizontal fires on multi-lane highways focuses on numerical simulations of actual tunnel fires, and there are few experimental studies, and there are only The experimental research platform system has major deficiencies and distortions. It is necessary to innovate the design of the multi-lane road tunnel fire platform experimental simulation system and conduct in-depth research on road tunnel fires.

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