Bamboo winding composite pipe gallery with high fire endurance and preparation method thereof

Abstract

The invention discloses a bamboo winding composite pipe gallery with high fire endurance and a preparation method thereof, and belongs to the technical field of bamboo winding pipe galleries. A firstfireproof layer formed by curing an inorganic mineral felt and fire-retardant resin is arranged, and a fireproof layer formed by organic intumescent fireproof coating is arranged on the inner peripheral wall surface of the first fireproof layer, so that the bamboo winding composite pipe gallery with high fire endurance is formed. The bamboo winding composite pipe gallery with high fire endurance is simple in structure and easy and convenient to prepare; through the combined arrangement of the organic intumescent fireproof coating and the inorganic mineral felt, the internal fireproof performance of the pipe gallery can be effectively improved on the premise that the self weight of the pipe gallery is not greatly increased, so that the fireproof performance of the pipe gallery can meet therequirement of a non-combustible structure not lower than 3.0h, the application requirement of the pipe gallery in a specific environment is met, the structural performance of the pipe gallery is improved, the application range of the pipe gallery is expanded, the application cost of the pipe gallery is reduced, and the pipe gallery has good application prospects and popularization value.

Description

technical field [0001] The invention belongs to the technical field of bamboo winding pipe gallery, and in particular relates to a bamboo winding composite pipe gallery with high fire resistance limit and a preparation method thereof. Background technique [0002] The pipe gallery is a structural facility built underground for laying various pipelines. It often integrates various pipelines such as electric power, communication, radio and television, gas, water supply and drainage, and heat, so as to effectively utilize urban underground space and save energy. The role of underground space resources also eliminates the irregular excavation of various professional pipelines, reduces the impact on road traffic and the surrounding environment, and completely solves the problems of "road zippers" and "air spider webs". [0003] At present, most of the widely used pipe galleries adopt reinforced concrete structures, which are formed by cast-in-place or prefabricated forms, which c...

AI Technical Summary

Problems solved by technology

However, when the pipe gallery is applied in a high-temperature and high-heat environment or there are flammable and explosive devices / substances in the pipe gallery, there is a certain application risk in the existing pipe gallery. Under the action of high temperature, strong heat environment or local fire, There is a risk of separation between the base material and the resin in the lining layer of the pipe gallery, and the lining layer may be broken down, which will lead to the gradual failure and destruction of the structural layer, affecting the service life of the pipe gallery

In addition, the national standard "GB50838-2015" stipulates that the main structure of the comprehensive pipe gallery should be a non-combustible structure with a fire resistance rating of not less than 3.0h, while the fire resistance rating of the existing bamboo winding composite pipe gallery can only reach B1 ( flame retardant) grade, especially when the pipe gallery has been used for a long time, the inner surface may also have aging and peeling off, which further deteriorates the fire resistance of the bamboo winding composite pipe gallery

It is precisely because of the above problems that the application of bamboo winding pipe gallery has certain limitations at this stage, and there is no way to give full play to the application potential of bamboo winding pipe gallery

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