Fiber panel civil air defense door

Abstract

The utility model discloses a fiber panel civil air defense door, belongs to the technical field of civil air defense doors, and solves the problem that the strength of an existing civil air defense door cannot be further improved due to the single structure. The utility model relates to a wave-absorbing composite material which comprises a base body, the wave-facing surface of the base body is in an arch shape or a plane shape, at least two fiber layers are arranged in the base body in the thickness direction, a plurality of fiber nets are arranged in each fiber layer, and the volume mixing amounts of the fiber nets in the fiber layers are different. According to the civil air defense door, at least two fiber layers are arranged in the base body, compared with a civil air defense door with a single fiber layer, the civil air defense door can gradually buffer borne external explosion or sound wave impact force, and therefore the civil air defense door has higher stability and strength. And the volume mixing amount of the fiber net in each fiber layer is changed according to the actual strength resistance requirement, so that the cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of civil air defense doors, in particular to a fiber panel civil air defense door. Background Art

[0002] Civil defense doors are the doors at the entrances and exits of people's defense projects. They are clearly classified into ordinary single-leaf and double-leaf protective closed doors and closed doors, movable threshold single-leaf and double-leaf protective closed doors and closed doors, etc. Existing civil defense doors often use a concrete layer with a relatively simple structure. Civil defense doors do not have additional structures in the concrete layer to improve their structural strength, and the strength of civil defense doors cannot be further improved.

[0003] In order to solve the above problems, the existing Chinese patent with application number 202322561916.1 discloses a civil defense door composited with continuous fiber panels and steel bars, which includes a substrate, the substrate includes a fiber layer with multiple fiber meshes arranged inside and a steel bar layer with multiple steel bars arranged inside; the fiber layer is located on the wave-facing surface of the substrate, and the steel bar layer is located on the back wave surface of the substrate.

[0004] Although the utility model improves the strength of the civil defense door through the fiber layer and the steel bar layer, compared with the existing civil defense door with a single concrete layer, the multi-layer fiber mesh can withstand the internal stress generated by the civil defense door due to external explosions or sound wave impacts, etc., making the civil defense door have better crack resistance and damage resistance, but the utility model only has one fiber layer, and the strength improvement is limited. Utility Model Content

[0005] In view of the above problems in the prior art, the utility model provides a fiber panel civil air defense door, which solves the problem that the existing civil air defense door cannot further improve its strength due to its single structure.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A fiber panel civil air defense door is provided, comprising a substrate, wherein the wave-facing surface of the substrate is arched or flat, at least two fiber layers are arranged inside the substrate along the thickness direction, each fiber layer is provided with a plurality of fiber webs, and the volumetric dosage of the fiber webs in each fiber layer is different.

[0008] In this solution, the material of the matrix can be ultra-high performance composite materials such as UHPC (ultra-high performance concrete), RPC (reactive powder concrete), and ECC (engineering cement-based reinforced composite materials). The matrix itself has a certain strength. The setting of at least two fiber layers can enable some fiber layers to first withstand the impact force and undergo a certain deformation when the civil air defense door is subjected to external explosion or sound wave impact, while the remaining fiber layers withstand the buffered impact force, which is smaller. The remaining fiber layers improve the stability of the entire civil air defense door. Compared with the existing civil air defense door with a single fiber layer, the civil air defense door with at least two fiber layers has a stronger impact resistance. The volumetric dosage of the fiber mesh in each fiber layer is changed according to the actual strength requirements, which can save costs.

[0009] Furthermore, a side frame is provided on the outer edge of the base, and at least one steel bar layer is provided inside the base, and the end surface projection area of ​​each fiber layer and each steel bar layer is the same. Multiple layers of steel mesh are provided inside each steel bar layer, and two adjacent layers of steel mesh are fixed by multiple tie bars. The side frame can be made of steel. The setting of the side frame facilitates the fixing of multiple fiber meshes inside its frame and facilitates the division of multiple fiber meshes into at least two groups. The multiple fiber meshes in each group are cast into a fiber layer with the base material. The steel bar layer further enhances the strength of the civil air defense door.

[0010] Furthermore, three adjacent fiber layers are arranged inside the matrix.

[0011] Furthermore, two fiber layers and one steel bar layer are arranged inside the matrix.

[0012] Furthermore, three fiber layers and two steel bar layers are arranged inside the matrix.

[0013] Furthermore, the back wave surface and the front wave surface of the base are both arched outwards; or the back wave surface of the base is flat and the front wave surface is arched. The front wave surface arched outwards disperses the external impact force or shock wave to both sides, which further improves the impact resistance of the civil air defense door compared with the existing civil air defense door with a flat front wave surface.

[0014] Furthermore, the fiber shape of each fiber web is any one or more of wavy fiber, spiral fiber, twisted fiber and convex fiber. The use of the above fibers increases the contact area between the fiber web and the filler in the fiber layer, so that the fiber layer can better offset the impact on the matrix.

[0015] Furthermore, each fiber web is a two-dimensional plane web or a three-dimensional solid web, and the angle between the warp and weft in the two-dimensional plane web is 90°, 60° or 45°.

[0016] Furthermore, the fiber material of each fiber mesh is steel fiber or any one of steel fiber and inorganic non-metal fiber mesh or organic fiber mesh. The inorganic non-metal fiber mesh is any one or more of basalt fiber mesh, carbon fiber mesh or glass fiber mesh, and the organic fiber mesh is any one or more of ultra-high molecular weight polyethylene fiber mesh and Kevlar fiber mesh.

[0017] The utility model discloses a fiber panel civil air defense door, which has the following beneficial effects:

[0018] At least two fiber layers are arranged in the matrix of the utility model. Compared with the civil defense door with a single fiber layer, the utility model can gradually buffer the impact force of external explosion or sound wave, thereby having higher stability and strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal top view structure of the fiber panel civil air defense door;

[0020] Figure 2 This is a schematic diagram of the internal top view structure of the fiber panel civil air defense door;

[0021] Figure 3 This is a schematic diagram of the internal top view structure of the fiber panel civil air defense door;

[0022] Figure 4 This is a schematic diagram of the internal top view structure of the fiber panel civil air defense door;

[0023] Figure 5 Schematic diagram of the structure of the wave fiber;

[0024] Figure 6 It is a schematic diagram of the structure of threaded fiber;

[0025] Figure 7 It is a schematic diagram of the structure of twisted fiber;

[0026] Figure 8 It is a schematic diagram of the structure of the convex point fiber;

[0027] Fig. 9 is a top view of the substrate;

[0028] Fig.10 is a top view of the substrate;

[0029] Fig.11 is a top view of the substrate;

[0030] Among them: 1. matrix; 2. fiber layer; 3. steel bar layer; 4. wavy fiber; 5. threaded fiber; 51. external thread; 52. recessed thread; 6. twisted fiber; 7. convex point fiber. DETAILED DESCRIPTION

[0031] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0032] refer to Figure 1 or Figure 2 The present embodiment provides a fiber panel civil air defense door, including a substrate 1, the wave-facing surface of the substrate 1 is arched or flat, the material of the substrate 1 can be ultra-high performance composite materials such as UHPC (ultra-high performance concrete), RPC (reactive powder concrete), ECC (engineering cement-based reinforced composite materials), and the substrate 1 itself has a certain strength.

[0033] A side frame is provided on the outer edge of the base 1, and at least two fiber layers 2 are provided inside the base 1 along the thickness direction, and multiple fiber nets are provided in each fiber layer 2. The material of the side frame can be steel, and the setting of the side frame facilitates the fixing of multiple fiber nets inside its frame and conveniently divides the multiple fiber nets into at least two groups, and the multiple fiber nets in each group are cast into the fiber layer 2 with the base 1 material.

[0034] At least one steel bar layer 3 is arranged inside the matrix 1, and the end projection area of ​​each fiber layer 2 and each steel bar layer 3 is the same. Multiple layers of steel bar mesh are arranged inside each steel bar layer 3, and two adjacent layers of steel bar mesh are fixed by multiple tie bars. The steel bar layer 3 further enhances the strength of the civil air defense door.

[0035] The working principle of this embodiment is that the setting of at least two fiber layers 2 can enable part of the fiber layers 2 to be first subjected to the impact force and undergo a certain deformation when the civil defense door is subjected to external explosion or sound wave impact, while the remaining fiber layers 2 are subjected to the buffered impact force, which is smaller. The remaining fiber layers 2 improve the stability of the entire civil defense door. Compared with the existing civil defense door with a single fiber layer 2, the civil defense door with at least two fiber layers 2 has a stronger impact resistance.

[0036] As a further solution of this embodiment, the fiber shape of each fiber web is any one or more of wavy fiber 4, threaded fiber 5, twisted fiber 6 and convex point fiber 7. Specifically, the wavy fiber 4 is wavy, referring to Figure 5 The threaded fiber 5 is provided with an outwardly protruding external thread 51 or an inwardly recessed recessed thread 52, reference Figure 6 ; Twisted fiber 6 is twisted, reference Figure 7 ; The convex point fiber 7 has a plurality of protrusions, reference Figure 8The above fibers increase the contact area between the fibers of the fiber web and the fillers in the fiber layer 2, so that the fiber layer 2 can better offset the impact on the substrate 1.

[0037] Each fiber web is a two-dimensional plane web or a three-dimensional solid web, and the included angle between the warp and weft in the two-dimensional plane web is 90°, 60° or 45°.

[0038] As a further solution of this embodiment, the fiber material of each fiber mesh is steel fiber or any one of steel fiber and inorganic non-metal fiber mesh or organic fiber mesh. The inorganic non-metal fiber mesh is any one or more of basalt fiber mesh, carbon fiber mesh or glass fiber mesh, and the organic fiber mesh is any one or more of ultra-high molecular weight polyethylene fiber mesh and Kevlar fiber mesh.

[0039] As a further solution of this embodiment, the volumetric dosage of the fiber web in each fiber layer 2 is different. The number and mesh size of the fiber web in two different fiber layers 2 can be changed according to the actual strength requirements to save costs.

[0040] In this embodiment, in order to better buffer and absorb vibration, the number of fiber meshes and the number of fiber meshes in the multiple fiber layers 2 distributed along the direction from the front wave surface to the rear wave surface are increased successively.

[0041] Example 1

[0042] refer to Figure 1 Three adjacent fiber layers 2 are arranged inside the base body 1, and the number of fiber webs in the three fiber layers 2 can be the same or different.

[0043] Example 2

[0044] refer to Figure 2 and Figure 3 Two fiber layers 2 and a steel bar layer 3 are arranged inside the matrix 1. The steel bar layer 3 is located between the two fiber layers 2 or on one side.

[0045] Example 3

[0046] refer to Figure 4 , three fiber layers 2 and two steel bar layers 3 are arranged inside the matrix 1. The two steel bar layers 3 are respectively located at two intervals of the three fiber layers 2.

[0047] Example 4

[0048] refer to Fig. 9 The back wave surface and the front wave surface of the base 1 are both arched outwards. The front wave surface arched outwards disperses the external impact force or shock wave to both sides, which further improves the impact resistance of the civil air defense door compared with the existing civil air defense door with a flat front wave surface.

[0049] Example 5

[0050] refer to Fig.10 The back wave surface and the front wave surface of the substrate 1 are both arched outward, and the two ends of the top projection of the back wave surface and the front wave surface of the substrate 1 are straight.

[0051] Example 6

[0052] refer to Fig.11 The back wave surface of the substrate 1 is flat, and the front wave surface is arched.

[0053] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A fiber panel civil air defense door, characterized in that: The invention comprises a base body (1), wherein the wave-facing surface of the base body (1) is in an arched shape or a flat surface, and at least two fiber layers (2) are arranged inside the base body (1) along the thickness direction, and each of the fiber layers (2) is provided with a plurality of fiber webs, and the volumetric dosage of the fiber webs in each fiber layer (2) is different.

2. The fiber panel civil air defense door according to claim 1, characterized in that: A side frame is provided on the outer edge of the base (1), and at least one steel bar layer (3) is provided inside the base (1); each fiber layer (2) and each steel bar layer (3) have the same end surface projection area; each steel bar layer (3) has multiple layers of steel bar mesh provided inside; two adjacent layers of steel bar mesh are fixed by multiple tie bars.

3. The fiber panel civil air defense door according to claim 1, characterized in that: Three adjacent fiber layers (2) are arranged inside the base body (1).

4. The fiber panel civil air defense door according to claim 2, characterized in that: Two fiber layers (2) and a steel bar layer (3) are arranged inside the matrix (1).

5. The fiber panel civil air defense door according to claim 2, characterized in that: Three fiber layers (2) and two steel bar layers (3) are arranged inside the matrix (1).

6. The fiber panel civil air defense door according to claim 1, characterized in that: The back wave surface and the front wave surface of the base body (1) are both arched outwards; or the back wave surface of the base body (1) is flat and the front wave surface is arched.

7. The fiber panel civil air defense door according to claim 1, characterized in that: The number of fiber webs and the mesh count of the fiber webs in two adjacent fiber layers (2) are different.

8. The fiber panel civil air defense door according to any one of claims 1 to 7, characterized in that: Each fiber web is a two-dimensional plane web or a three-dimensional solid web, and the included angle between the warp and weft in the two-dimensional plane web is 90°, 60° or 45°.

9. The fiber panel civil air defense door according to any one of claims 1 to 7, characterized in that: The fiber material of each fiber mesh is steel fiber or a composite of steel fiber and inorganic non-metal fiber mesh or organic fiber mesh.

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