Protection device for enhancing aerial near-field explosion resistance of existing building

Abstract

The invention relates to a protection device for enhancing the air near-field explosion resistance of an existing building. The protection device comprises a splicing outer frame and a protection unit embedded in the splicing outer frame, wherein the protection unit comprises a first honeycomb steel plate unit and a second honeycomb steel plate unit which are attached together; the first honeycomb steel plate unit comprises a first fixed box and first honeycomb cells fixed in the first fixed box; the second honeycomb steel plate unit comprises a second fixed box and second honeycomb cells fixed in the second fixed box; the first honeycomb cells are axially and vertically arranged; the second honeycomb cells are axially and transversely arranged; CFRP protection layers are symmetrically arranged on the side walls, away from each other, of the first fixed box and the second fixed box; and the first honeycomb cells and the second honeycomb cells are filled with high polymers. Shock waves are attenuated and absorbed through diffuse reflection of the shock waves; energy is dissipated through multiple defense lines; rigidity and softness are combined; and the peak value of air blasting shock waves can be attenuated by 90 percent or higher, so that the safety of structures or other protected targets is protected.

Description

technical field [0001] The invention relates to the technical field of air near-field blasting shock wave disaster protection, in particular to a protection device for enhancing the ability of existing buildings to resist air near-field explosions. Background technique [0002] In recent years, explosion incidents have gradually increased, and flammable and explosive areas such as urban gas stations and gas stations are also one of the important sources of explosion threats. When an explosion accident occurs, there are mainly two types of destructive effects on buildings: broken shrapnel and explosion shock waves. Among them, the explosion shock wave can be transmitted through the wall, and the air overpressure generated by it will cause damage to structures and personnel behind the wall. Therefore, the safety protection of structures and personnel under the shock wave of air explosion has been paid more and more attention. [0003] At present, the widely used anti-blast m...

AI Technical Summary

Problems solved by technology

[0003] At present, the widely used anti-blast measures mainly include the construction of traditional reinforced concrete blast-proof walls, brick walls and other blast-proof walls. Due to the limitations of its own structure, the ability to attenuate the air shock wave is limited. After the shock wave passes through the wall, it will still cause damage to other protected targets behind the explosion-proof wall and personal injury.

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