Air-supported type film structure fireproof structure based on personnel safety and operation method

Abstract

Provided is an air-supported type film structure fireproof structure based on personnel safety and an operation method of the air-supported type film structure fireproof structure. When a fire occurs,resistance wires I and resistance wires II are immediately heated, and a plurality of smoke blocking drapes I and a plurality of smoke blocking drapes II are completely unfolded so as to form a temporary smoke prevention refuge space for personnel under the fire at a circle around the periphery of a building; meanwhile, refuge area illumination indication marks are started, and illumination and indication are provided; meanwhile, the blowing air volume of an air supply system is increased in a full load manner; when the fire grows slowly and the flame height is low, and when the number of users is small, the personnel are guided to be evacuated to the outside by air-tight doors; when the fire grows rapidly and the flame height is higher, and when the number of the users is large, the personnel are guided to be evacuated to the outside through the air-tight doors or evacuation doors at the same time; meanwhile, a water cooling system is started according to the condition, and the jet water covers the upper portions to the middle upper portions of rectangular curtains I and rectangular curtains II so as to enhance the effect of preventing the flame body radiation from threatening the safety of the indoor personnel; and the target that the personnel under the fire are protected against the film surface buckling and smoke and flame body radiation encroaching is achieved, and otherdisasters are taken into consideration.

Description

technical field [0001] The invention relates to the field of building structure fire prevention and emergency evacuation under fire, in particular to an integrated structure (building) fire prevention structure developed for the special building product air-supported membrane structure with personnel safety as the goal of fire prevention and fortification and after a fire occurs. method of operation. Background technique [0002] The air-supported membrane structure is a special building product. The forming principle of its roof membrane is similar to blowing a balloon. It maintains the indoor pressure 200pa~250pa higher than the outdoor to keep the membrane surface in the design shape under normal use conditions. The users are located here in an environment slightly above atmospheric pressure. [0003] It is the above-mentioned working principle that the air-supported membrane structure needs to have essential basic components, such as: the complete membrane surface, the ...

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Problems solved by technology

[0019] (2-2) At the same time, in the existing project, once the set pressure is exceeded, the supplementary air system will stop working, so the opening area of ​​the smoke exhaust component will directly determine the duration of this internal pressure feature, but it is foreseeable that it will be very short ;

[0020] (2-3) The spread of the open flame is related to the characteristics of the burning material and the placement location. The exhaust of the smoke will be supplemented by air near the ground, so it may not be effective in slowing down the spread of the open flame;

[0021] (2-4) The uncertainty of the location of the fire may burn through the membrane surface above the flame to form holes, making the smoke exhaust components ineffective. Moreover, once the smoke exhaust components collapse with the ups and downs of the membrane surface, they will be almost completely ineffective

[0027] (3-3) If the reinforced mesh is very strong, it will increase the possibility of the membrane surface being torn in the windy and snowy weather. If it is not very strong, it may collapse (fatigue) with the shaking of the membrane surface caused by the windy and snowy weather;

[0028] (3-4) Uncertainty of fire occurrence, there is a possibility of ablation of the membrane surface by a large fire. At this time, the spray protection membrane surface device cannot solve the problem of membrane surface burning. If the device fails to operate, it may also be burned by the flame collapse

[0033] (4-2) The place of this technology is very restrictive, and it cannot be used in air film places that require large clearance, such as coal storage bins with large coal stackers and sports training facilities in indoor football fields;

[0034] (4-3) Once the lamp post (metal vertical support) and cable chain without fire protection under fire collapse (continuously collapse after being pulled), not only cannot support the film surface effect, but may also cause additional damage to personnel

[0036] (4-4) The gas film structure power supply unit fails to work due to power failure caused by fire;

[0037] (4-5) Such mechanisms are generally metal components, which may be damaged and collapsed due to lack of fire protection, or the side elevation facing the fire source may protrude from the card due to thermal expansion and bending;

[0041] (1) There are misunderstandings about the fire protection of air-supported membrane structures, which confuse building fire protection with fire extinguishing, and fail to take into account the most unfavorable situation of fire protection, which is the failure of sprinkler systems;

[0042] (2) The announced fire protection technical measures violate the structural characteristics of the air-supported membrane structure, making the technical measures unfeasible or unreliable, especially the adoption of certain measures may cause additional safety risks to personnel evacuation;

[0043] (3) Some of the announced technical measures lack fire prevention pertinence, and some of them are more restrictive in actual application, and there are even situations where unnecessary waste is caused;

[0044] (4) No fire protection technical measures directly aimed at the safety of personnel under fire in air-supported membrane structure buildings have been proposed. Some technologies pay attention to the safety of personnel under fire, but it is planned to use indirect technical means to protect the property safety of the membrane surface. The goal, the actual effect may be completely different, for example: adopt the complete technology of water protection film surface under fire;

[0045] (5) Even if the feasibility and reliability of the existing fire protection technical measures are not discussed, it can be found that the existing technology only focuses on the smoke exhaust or the collapse of the membrane surface, and does not regard the air-supported membrane structure as a whole as a special building product , just look at a corner, rigidly apply the current technical standards, and lack a systematic technical solution to the fire prevention problem of the air-supported membrane structure;

[0046] (6) Even if the existing technologies are accumulated, it is impossible to reliably solve the safety problem of personnel fires in the air-supported membrane structure, and the core is that the goal concept of solving the fire prevention problem of the air-supported membrane structure is not clear;

[0047] (7) There are no existing technical cases where smoke prevention technical measures are used to protect the safety of personnel in air-supported membrane structure buildings under fire

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