CN218467440U

CN218467440U - Arch string type anti-explosion plate structure

Info

Publication number: CN218467440U
Application number: CN202221542616.8U
Authority: CN
Inventors: 范华林; 包文奕
Original assignee: Nanjing University of Aeronautics and Astronautics
Current assignee: Nanjing University of Aeronautics and Astronautics
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-02-10
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses an arch string formula antiknock plate structure belongs to structure protection technical field. The utility model comprises an arch surface, a back plate and a stiffened plate; the arch surface is used for bearing explosion impact load, the arch surface is provided with an energy absorption structure, a plane rib plate is arranged between the arch surface and the back plate, and the back plate is mainly used for bearing tensile force generated after the energy absorption layer of the arch surface is damaged; the super material antiknock board of archwire is when bearing explosion impact load, mainly leans on the destruction of the inside energy-absorbing structure of archway face to come the decay energy, can change the antiknock performance that the size and the form of energy-absorbing structure improve the board according to actual conditions's needs, the utility model discloses an antiknock structure of archway formula has weakened the dependence of antiknock structure to boundary condition.

Description

Arch string type anti-explosion plate structure

Technical Field

The utility model belongs to the technical field of civil air defense engineering, concretely relates to archwire formula antiknock plate structure.

Background

The civil air defense project is an underground protection structure constructed for guaranteeing personnel, material shelter, civil air defense command and medical aid in war, and is an important guarantee facility capable of rapidly preventing enemy from attacking suddenly, effectively sheltering personnel and material and preserving war strength. The civil air defense engineering is an important component of a national air defense system, underground space is mostly developed and utilized at ordinary times, personnel evacuation or material storage can be carried out during disasters, and shelter can be provided for people during wartime. Has important social benefit, economic benefit and military benefit.

In civil air defense engineering construction, the mouth protective equipment is mainly a protective door, and in the aspect of civil air defense equipment door leaf structural design, the current relatively universal structural form is a flat plate form, and a reinforced concrete material and a steel structural material are mostly adopted, and the two materials have the advantages of lower price, reliable rigidity and strength and easy production and processing. The fixed doorsill generally adopted by the existing single-leaf protective door has a simple structure, but is inconvenient to pass, and particularly can be stumbled when the illumination is insufficient or the single-leaf protective door passes quickly. Although the movable doorsill solves the problem of traffic obstruction, the movable doorsill needs to be laterally arranged or stored in different places at ordinary times, and needs professionals to carry out secondary installation and debugging in wartime, so that the requirement of a large amount of rapid flat-battle conversion cannot be met actually. And because of the reasons of being left out of management and the like, the situation that the live doorsill is lost and damaged in a large quantity is very common, and the wartime conversion application cannot be realized.

Disclosure of Invention

The utility model provides an arch string formula antiknock plate structure aims at the dependence of reduction antiknock structure to boundary condition, finally realizes the no threshold design of single guard gate.

In order to realize the purpose, the utility model adopts the following technical proposal:

an archwire antiknock panel structure, comprising: the main body arch surface is used for bearing the blast impact load, the interior of the main body arch surface is of a negative Poisson ratio structure, and the main body arch surface is actively destroyed to attenuate energy when being subjected to blast impact, so that the anti-explosion performance of the plate is improved; the back plate is mainly used for bearing the tensile force generated after the energy absorbing layer of the arch surface is damaged; the stiffened plate between the main arch surface and the back plate is completely welded on the arch surface and is simultaneously welded with the plane back plate at the arch springing position, and the stiffened plate has the function of better transmitting the pulling force generated by the arch surface to the back plate.

The arch face, the back plate and the stiffened plate are connected by welding, the thickness of the steel plate is more than or equal to 1mm, the height of the whole explosion-proof plate is 120mm, and the side length is 1000mm. The integral structure is made of metal materials by welding, and preferably 316L steel or Q235 steel; the body dome comprises: the upper panel, the lower panel and the middle negative poisson ratio structure need to bend the steel plate when preparing the negative poisson ratio structure in the arch surface.

Has the advantages that: the utility model provides an arch chord type antiknock plate structure adopts arcwall face and backplate to combine together for antiknock structure only need set for the boundary condition simply to prop up, and the degree of difficulty when having reduced the installation, just is finally realized the no threshold design of single guard gate to the dependency of boundary condition to the reduction antiknock structure, the utility model has the advantages of simple structure, the processing cost is low, and the installation rate is fast.

Drawings

FIG. 1 is a schematic view of an axial view of a blast-resistant panel structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an anti-knock plate according to an embodiment of the present invention;

FIG. 3 is an explosion-proof schematic view of an anti-explosion plate according to an embodiment of the present invention;

wherein, 1-the arch surface is an upper panel; 2-negative poisson's ratio structure; 3-a cambered lower panel; 4-stiffened plate; 5-a back plate; 6-simply supported support; 7-the ground.

Detailed Description

The invention is described in detail below with reference to the following figures and specific examples:

as shown in fig. 1, an arch chord-shaped anti-explosion structure comprises an arch surface, a stiffened plate and a back plate, wherein the arch surface is used for bearing explosion impact load, and the interior of the arch surface is of a negative poisson ratio structure, so that the arch surface is actively destroyed to attenuate energy when being impacted by explosion, and the anti-explosion performance of the plate is improved; the back plate is mainly used for bearing tensile force generated after the arch surface energy absorption layer is damaged; the reinforcing plate between the arch surface and the back plate is completely welded on the arch surface and is simultaneously welded with the plane back plate at the arch springing position, and the function of the reinforcing plate is to better transmit the pulling force generated by the arch surface to the back plate; all parts are welded and connected by steel plates with the thickness of 1mm, the whole structure is 120mm high, and the side length is 1000mm. When preparing a negative poisson's ratio structure in an arch surface, a bending machine is needed to bend a steel plate.

In preparation, the steel sheet is cut into sheets of desired dimensions. Firstly, the stiffened plate is fixed on the back plate in a welding mode after being positioned, then the lower panel of the arch surface is welded on the stiffened plate in sequence, and the energy absorption structure with a negative Poisson's ratio is welded on the lower panel. Because the space between the negative poisson ratio structures is small, the upper panel of the arch surface can not be directly welded, and the upper panel is divided into small sheets according to the space between the negative poisson ratio structures and then is sequentially welded on the negative poisson ratio structures. The size and the form of the energy absorption structure can be changed according to the requirements of actual conditions to improve the anti-explosion performance of the plate.

When the anti-explosion structure is used for playing the anti-explosion performance, only the boundary needs to be set as a simple support, and the anti-explosion structure is installed on the ground by utilizing the simple support and can be used for defending the conditions of 1m of explosion distance and 2.5kg of TNT mass.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An arch-chord-type blast-resistant panel structure, comprising: the main body arch surface and the plane back plate are fixedly connected at two ends; the inside of the main body arch surface is of a negative Poisson ratio structure.

2. The arch-chord-type blast resistant panel structure of claim 1, wherein said body soffit comprises: an upper panel, a lower panel and an intermediate negative poisson's ratio structure.

3. The arch string type blast resistant panel structure according to claim 1, wherein a stiffened plate is provided between the main body arch face and the back plate.

4. The arch chord type blast resistant plate structure according to claim 3, characterized in that the main body arch surface, the back plate and the stiffened plate are all connected by welding, and the stiffened plate is completely welded on the main body arch surface and is welded with the plane back plate at the arch foot.

5. The archwire antiknock plate structure of claim 1, wherein the entire antiknock plate has a height of 120mm and a side length of 1000mm.

6. The archwire antiknock panel structure of claim 1, wherein the boundaries are configured to be simply supported for antiknock performance.

7. The archwire antiknock panel structure of claim 1, wherein said antiknock panel structure is constructed of a metallic material.

8. The archwire antiknock structure of claim 1, wherein said antiknock structure is 316L or Q235 steel.