Large-span underground engineering structure ceiling outer hanging type fireproof plate and installing method thereof

Abstract

The invention provides a large-span underground engineering structure ceiling outer hanging type fireproof plate and an installing method thereof, and belongs to the field of underground engineering disaster prevention. The outer hanging type fireproof plate comprises a fireproof plate layer, inter-plate connecting pieces, an installing hanging frame, a building ceiling and an air heat preservation partition layer. The fireproof plate layer comprises a rock wool plate layer, a fiber plate layer and a fireproof rubber plate layer. The fireproof plate layer is connected with the building ceilingthrough the installing hanging frame, the lower portion of the installing hanging frame is embedded in the fireproof plate layer, and the installing hanging frame and the fireproof plate layer are sequentially connected and fixed in a segmented manner. The air heat preservation partition layer on the inner side of the outer hanging type fireproof plate is cut off through a fireproof plate hangingframe body into small partition layer branch cavities, the convection phenomenon caused by heated air during the fire disaster is prevented, and damage to the underground engineering structure ceiling from the fire disaster is effectively reduced.

Description

technical field [0001] The invention relates to the field of disaster prevention in underground engineering, in particular to an externally-mounted fireproof board on the ceiling of a large-span underground engineering structure and an installation method thereof. Background technique [0002] With the development of urban construction, a large number of urban underground space buildings are being constructed. While urban underground space buildings are more and more used and bring convenience to people's lives, fires in urban underground space buildings also occur frequently all over the world. Urban underground space building fires not only cause huge damage to infrastructure, but also cause serious casualties and huge property losses to the local area. Due to the limited escape conditions of urban underground space buildings and the difficulty of rescue when firefighters enter urban underground space buildings, more systematic safety measures are required in the design of...

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Problems solved by technology

[0004] At present, fire retardant coatings are widely used, but the thickness and thermal conductivity of fire retardant coatings are limited, so they cannot play an effective role at all.

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