Composite protective structure against blast impact

A composite protective structure, explosion impact technology, applied in earthquake resistance, building components, protective buildings/shelter, etc., can solve the problems of secondary damage protection structure, difficult to repair quickly, easy to crack, etc., to eliminate explosion shock collapse. phenomenon, the effect of improving the structural ductility and improving the resistance level

Active Publication Date: 2019-09-20
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of the existing protective structure layer in the field of construction, such as being unable to bear load, being difficult to withstand multiple explosion impacts, being easily cracked by the impact and causing secondary damage, and difficult to quickly repair the protective structure. Point truss honeycomb composite anti-explosion layer structure of the main load-bearing material

Method used

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  • Composite protective structure against blast impact
  • Composite protective structure against blast impact

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A novel point truss honeycomb concrete composite protective structure comprises an energy absorption layer 3 , a truss-type compressive layer 2 and a honeycomb-type tensile layer 1 .

[0030] The honeycomb tensile layer 1 includes a honeycomb structure, and the honeycomb structure is filled with concrete to form the bottom formwork of the structure.

[0031] The truss-type compression layer 2 includes a truss structure; the truss structure is welded on the honeycomb structure to form an integral formwork structure; concrete is poured above the honeycomb structure to a height of 15cm above the top rod of the truss structure.

[0032] An energy-absorbing layer 3 is laid on the structural surface layer of the truss-type compression layer 2 .

[0033] In specific implementation, the energy absorbing layer is made of foamed aluminum material with a thickness of 20mm.

[0034] The truss-type compressive layer is a lattice truss structure, the truss height is 120mm, the steel...

Embodiment 2

[0037] A novel point truss honeycomb concrete composite protective structure comprises an energy absorption layer 3 , a truss-type compressive layer 2 and a honeycomb-type tensile layer 1 .

[0038] The honeycomb tensile layer 1 includes a honeycomb structure, and the honeycomb structure is filled with concrete to form the bottom formwork of the structure.

[0039] The truss-type compression layer 2 includes a truss structure; the truss structure is welded on the honeycomb structure to form an integral formwork structure; concrete is poured above the honeycomb structure to a height of 15cm above the top rod of the truss structure.

[0040] An energy-absorbing layer 3 is laid on the structural surface layer of the truss-type compression layer 2 .

[0041] In the specific implementation, the energy-absorbing layer is made of foamed concrete material with a thickness of 10 mm.

[0042] The truss-type compressive layer is a lattice truss structure, the truss height is 150mm, the ...

Embodiment 3

[0045] A novel point truss honeycomb concrete composite protective structure comprises an energy absorption layer 3 , a truss-type compressive layer 2 and a honeycomb-type tensile layer 1 .

[0046] The honeycomb tensile layer 1 includes a honeycomb structure, and the honeycomb structure is filled with concrete to form the bottom formwork of the structure.

[0047] The truss-type compression layer 2 includes a truss structure; the truss structure is welded on the honeycomb structure to form an integral formwork structure; concrete is poured above the honeycomb structure to a height of 15cm above the top rod of the truss structure.

[0048] An energy-absorbing layer 3 is laid on the structural surface layer of the truss-type compression layer 2 .

[0049] During the specific implementation, the energy-absorbing layer is made of foamed concrete material with a thickness of 50mm.

[0050] The truss-type compressive layer is a point truss structure, the height of the point truss ...

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Abstract

The invention discloses a composite protective structure resistant to blast shock which is mainly a point truss honeycomb integral protective structure formed by a honeycomb tensile layer and a lattice truss-type compression resistance layer through welding spots and connecting keys, and a foam energy absorbing layer is added on the outer layer. According to the composite protective structure, theforce transmission path of a concrete protective structure under the action of blast is innovatively optimized, the resistance level of the protective structure can be greatly improved, and the structure ductility is improved; and the dispersion of concrete fragments in the structure can be restrained, and the phenomenon of blast and explosion-induced collapse of similar traditional concrete protective structures is eliminated.

Description

technical field [0001] The invention belongs to the field of protection engineering, in particular to a composite protection structure against explosion and impact. Background technique [0002] The explosion shock wave is a strong compression wave. At the moment of the explosion, the explosive material releases a large amount of energy in a limited space and a very short period of time, and a large number of high-temperature and high-pressure products are produced to rapidly squeeze the surrounding medium, making the pressure, density and temperature of the medium. When the physical quantity rises rapidly, a shock wave is formed. The explosion shock wave will cause great damage to the structure and personnel. The function of the protective structure is to protect the safety of the building and personnel, and effectively reduce the peak overpressure of the shock wave. [0003] At this stage, most military buildings cannot adopt underground protective engineering structures,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/98E04H9/04
Inventor 马钢张玉李世强王志华武瑛
Owner TAIYUAN UNIV OF TECH
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