Honeycomb sandwich explosion-proof wallboard

Abstract

The invention provides a honeycomb sandwich explosion-proof wallboard. The explosion-proof wallboard comprises a first steel plate layer, a honeycomb composite layer, a second steel plate layer and first connecting parts, wherein the honeycomb composite layer is arranged between the first steel plate layer and the second steel plate layer, the first connecting parts penetrate through the first steel plate layer, the honeycomb composite layer and the second steel plate layer to connect the three layers into a whole, the honeycomb composite layer comprises at least four layers of trapezoid zigzag profiled steel sheets, every two adjacent layers of profiled steel sheets located on the upper layer and the lower layer are arranged in a staggered mode, tooth peaks on the upper layer and tooth valleys on the adjacent lower layer are spliced to form units with the cross section being hexagonal, a hexagonal honeycomb structure is formed by a plurality of hexagonal units, and explosion load is resisted through the capacity of deformation energy absorption of the honeycomb composite layer. According to the explosion-proof wallboard, the honeycomb composite layer is of the hollow honeycomb structure composed of the multiple layers of profiled steel sheets, the purposes that compared with a wallboard with the same explosion-proof performance, the occupied space is smaller, and the weight islighter are achieved, and therefore the extra burden of a building is reduced, and the building cost is reduced.

Description

technical field [0001] The invention relates to the field of building explosion-proof engineering, in particular to a honeycomb sandwich explosion-proof wallboard. Background technique [0002] In recent years, the destruction of ordinary buildings by terrorist attacks has caused a lot of loss of life and property. Explosions targeting ordinary buildings continue to occur around the world, and bomb-type terrorist attacks have caused serious threats and damage to human life and the safety of public buildings. In addition, the storage of daily pyrotechnic products and the explosion protection of important buildings are also crucial to the protection of people's property and personal safety. How to effectively protect various buildings and components from severe explosion damage and reduce loss of life and property has become an important issue. [0003] Most of the existing explosion-proof wall panels resist the impact load of the explosion through thick concrete walls or co...

AI Technical Summary

Problems solved by technology

However, the above-mentioned patents have the following deficiencies: the structure of the honeycomb rubber lead core anti-cracking explosion-proof wall is complex, including honeycomb steel plates, steel frame plates, rubber layers, lead cores, horizontal and vertical tie bars, fasteners, high-strength fiber concrete, fire resistance Combustible coatings, etc., involving steel, rubber, lead, concrete and other materials, the processing is cumbersome and the production is complicated, which brings certain difficulties to mass production and is not easy to promote and use on a large scale; The composition ratio of the material is strictly required. The steel fiber content of high-strength fiber hybrid concrete needs to be controlled at 1% to 3%, and the polypropylene fiber content needs to be controlled at 0.1% to 0.2%, which puts forward certain requirements for the precision control of material processing; honeycomb rubber The lead core anti-cracking explosion-proof wall is provided with a hexagonal solid lead core in the rubber layer, and the density of the lead material is 11.3437g / cm 3 , greater than steel, concrete and rubber, and the solid filling method will inevitably increase the overall self-weight of the explosion-proof wall, which will not only bring inconvenience to the installation, but also cause a large additional bearing burden to the building structure and reduce the structural safety.

However, the above-mentioned patents have the following disadvantages: the preparation of the composite sandwich bulletproof structure is based on the honeycomb negative Poisson's ratio structure model, and its concave honeycomb cell unit has a complex three-dimensional network structure, which cannot be casted by conventional molds and has to be cast with TC4 Titanium alloy powder is used as raw material, which is processed and formed by 3D printing technology. 3D printing is limited by the materials and principles of rapid prototyping. The material performance and processing accuracy of the finished product need to be improved. Leaving structural defects, it is not suitable for the production of important functional parts, and it is not convenient for mass production; during processing, it is also necessary to inject filled elastomer materials into the formed honeycomb-type negative Poisson's ratio structural pores to form a composite sandwich layer. The injection molding process is easily affected by the pore size, which in turn affects the relative density and ballistic performance of the elastomer material, which requires high production and processing

[0008] As mentioned in the Chinese patent with application number 201711375198.1, the current explosion-proof steel plate is basically changing the properties of the material, and there is no explosion-proof wall that adopts different structural forms to make greater use of materials to absorb impact energy.

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