Arched wall of polymorphic subway tunnel based on heat-reducing and flame-retardant

Abstract

The invention discloses an arched wall of a polymorphic subway tunnel based on heat-reducing and flame-retardant, and belongs to the field of building construction. According to the arched wall of thepolymorphic subway tunnel based on heat-reducing and flame-retardant, through the arrangements of an embedded polymorphic layer and a hollow overflow layer, in the case of fire or high temperature imminent fire, irregular balls are melted, liquid containing carbon dioxide flows out, on the one hand, volatilization takes away heat to perform cooling, on the other hand, the concentration of carbondioxide of a part can be effectively improved, thus a certain suppression effect on the fire is realized, effective time of fire fighting for staffs is prolonged, then the threats to the lives and properties of people caused by the fire in the subway tunnel can be effectively reduced, at the same time, when the liquid in the irregular balls flows out completely, due to the loss of the irregular balls, an underlying skeleton in a heat-varying layer generates voids, the voids can store and contain more heat and smoke, and the threat of the fire is further reduced.

Description

Technical field [0001] The invention relates to the field of building construction, and more specifically to a polymorphic subway tunnel arch wall based on heat reduction and flame retardancy. Background technique [0002] The subway is a form of railway transportation. It refers to the urban rail transit system that mainly runs underground, that is, the abbreviation of "underground railway" or "underground railway" (Subway, tube, underground); many such systems are designed to match the construction environment. And considering the construction and operating costs, it may be converted to ground or elevated sections outside the city center. The subway is a proprietary, high-density, and high-volume urban rail transit system (Metro) that covers all kinds of underground and above-ground rights of way in urban areas. The subway in Taiwan is called "Rapid transit". [0003] In addition to subways, it also includes elevated railways or railways laid on the road. Therefore, the subway ...

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Problems solved by technology

[0004] In the prior art, there are many studies on rainproofing of subway tunnels, but there are few fire prevention measures for subway tunnels, and the space of existing subway tunnels is relatively airtight. Therefore, after a fire breaks out, it poses a greater threat to the safety of personnel, such as 1. 26 Tokyo subway fire accident, the existing subway tunnel walls are generally made of internally embedded steel bars and externally poured concrete, which is poor in fire prevention and cooling, and cannot provide certain safety guarantees in case of fire

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