Highway tunnel fireproofing device with double-layer air sandwich rectangle

Abstract

The invention provides a highway tunnel fireproofing device with a double-layer air sandwich rectangle, and belongs to the field of tunnel fireproofing. The highway tunnel fireproofing device mainly comprises tunnel segments and a fireproofing device. The fireproofing device is in a double-layer air sandwich rectangle structure, and composed of an outer layer component and an internal layer component, wherein air sandwich layers are arranged between the outer layer component and the internal layer component. Protrusions are arranged at the lower ends of the outer layer component and the internal layer component of the fireproofing device, firstly the outer layer component and the internal layer component are assembled through the protrusions, then the outer layer component and the internallayer component are fixed to the tunnel segments, and the buckling position of the bottom of the fireproofing device is directly pre-embedded under the roadbed. The fireproofing device adopts a solidresin impregnated paper high pressure laminate, that is, a fire-proof plate which has the characteristics of heat insulation, light weight and high strength, fire resistance and flaming retarding, and processing convenience. The fireproofing device has the advantages of high fire resistance, good decorativeness, simple installation and easy dismounting and replacing.

Description

Technical field [0001] The invention relates to a tunnel fire prevention device, in particular to a fire prevention device for a double-layer air-sandwich rectangular highway tunnel. Background technique [0002] With the development of economy and transportation, in order to relieve traffic pressure, tunnels have become an important part of urban roads, mountain roads, cross-water roads, and railways. Especially for complex cities, highway tunnels have become an indispensable transportation channel. The subsequent road tunnel fires became more serious, and the economic losses caused by tunnel fires were huge. Therefore, the fire protection of highway tunnels becomes more and more important. Existing road tunnels generally adopt fire-proof rolling shutters or fire-proof coatings for tunnel fire-proofing. The fire shutter in the tunnel must be a normally closed fire shutter. However, during the operation of the highway tunnel, the wind pressure generated by the piston wind gene...

AI Technical Summary

Problems solved by technology

The fire shutter in the tunnel must adopt the normally closed fire shutter. However, during the operation of the road tunnel, the wind pressure generated by the piston wind generated by the passing vehicle will continuously affect the curtain plate of the fire shutter, causing positive and negative pressure effects. , pulling alternately on both sides of the curtain panel, so the peak value of the lateral wind pressure is relatively large, which will cause huge damage to the structure of the fire shutter, resulting in the phenomenon of curtain panel warping and curtain panel falling off, which increases the operating cost of the road tunnel

In addition, during the construction of fire-resistant coatings, the construction steps are complicated and require multi-layer coatings, and the fire-proof effect is not ideal.

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