Modularized assembly type reinforced concrete bulletproof layer

Abstract

The utility model discloses a modular assembly type reinforced concrete bulletproof layer which comprises a bottom plate, a plurality of bulletproof units with square cross sections are arranged on the bottom plate, the bulletproof units are spliced to form a bulletproof layer, and the bulletproof layer is formed by splicing a plurality of bulletproof layers. Each bulletproof unit comprises four strip-shaped reinforced concrete modules with the same size and a square reinforced concrete module, and the square reinforced concrete module is embedded in a middle gap formed by the four strip-shaped reinforced concrete modules which are in butt joint end to end in sequence; longitudinal steel screws are arranged on the strip-shaped reinforced concrete modules and the square reinforced concrete modules and penetrate through all the bulletproof layers. The strip-shaped reinforced concrete modules and the square reinforced concrete modules on the adjacent bulletproof layers are opposite in trend and staggered. The steel screws can penetrate through the multiple layers of concrete modules, on one hand, the assembly function is achieved, and on the other hand, the overall shear strength is provided. And the modular assembly type bulletproof layer is adopted, so that the energy consumption mechanism is rich.

Description

Technical Field

[0001] This utility model belongs to the field of disaster prevention and mitigation engineering technology, and relates to modular prefabricated reinforced concrete shielding layer. Background Technology

[0002] Currently, the commonly used blast shielding layer is a monolithic cast-in-place type, which has drawbacks such as large volume, difficulty in formwork support, long curing time, easy cracking of concrete, and high maintenance and replacement costs. There are also some modular blast shielding layer devices using steel-concrete composite structures, but these also require on-site pouring and curing, which involves high time and cost on-site and cannot meet the needs of rapid response in special circumstances. Once the blast shielding layer is hit, the concrete damage will be irregular, and if the damaged area is cut and then re-poured concrete for repair, the maintenance cycle will be extended.

[0003] Therefore, there is an urgent need for a modular prefabricated bulletproof layer that can be quickly installed and repaired. In order to increase the energy consumption mechanism of the bulletproof layer, reduce the construction cycle of the bulletproof layer, and save construction costs, a modular prefabricated reinforced concrete bulletproof layer is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a modular prefabricated reinforced concrete shielding layer, which solves the problems of difficult formwork support, easy cracking of large-volume concrete, and high maintenance and replacement costs of traditional integral cast-in-place shielding layers.

[0005] The technical solution adopted by this utility model is a modular prefabricated reinforced concrete bulletproof layer, including a base plate, on which multiple bulletproof units with square cross sections are arranged, and multiple bulletproof units are spliced ​​together to form a bulletproof layer. The bulletproof layer is assembled from multiple bulletproof layers.

[0006] Each bulletproof unit consists of four identical strip-shaped reinforced concrete modules and one square reinforced concrete module. The square reinforced concrete module is embedded in the middle gap formed by the four strip-shaped reinforced concrete modules that are connected end to end in sequence. The strip-shaped and square reinforced concrete modules are equipped with longitudinal steel bolts that penetrate each bulletproof layer.

[0007] The strip-shaped and square-shaped reinforced concrete modules on adjacent bulletproof layers face opposite directions and are interwoven.

[0008] The side length of the square reinforced concrete module is equal to the short side length of the strip reinforced concrete module, and the long side of the strip reinforced concrete module is twice the short side length.

[0009] Each strip-shaped reinforced concrete module has two steel screws, and each square reinforced concrete module has one steel screw. Each bulletproof unit has a total of nine steel screws, and the nine steel screws are centrally symmetrical.

[0010] The strip-shaped reinforced concrete module includes a strip-shaped steel cage and concrete poured inside the strip-shaped steel cage; the strip-shaped steel cage includes longitudinal bars and transverse bars, which intersect perpendicularly to form a grid frame, and the outer frames of the upper and lower grid frames are fixedly connected by longitudinally arranged stirrups to form the strip-shaped steel cage.

[0011] The upper surface of the strip reinforced concrete module has reserved hoisting slots at the four corners. The hoisting slots are distributed between two adjacent grids, and the exposed horizontal bars at the hoisting slots serve as hoisting handles.

[0012] Before pouring, each strip reinforced concrete module has a pre-drilled hole for a longitudinally penetrating steel bolt.

[0013] The outermost steel bolts on the surface bulletproof layer are connected by the outer restraint steel bars. The steel bolts and the outer restraint steel bars are fixedly connected by welding to form a welding point.

[0014] The square steel cage of the square reinforced concrete module also adopts the structural mode of the steel cage of the strip reinforced concrete module.

[0015] The beneficial effects of this utility model are: the modular prefabricated reinforced concrete bulletproof layer of this utility model increases the energy consumption of the bulletproof layer, reduces the construction cycle and cost of the bulletproof layer, and can be quickly repaired after damage; the energy is consumed by the collision between the prefabricated bulletproof units, reducing damage to personnel and facilities; modular processing is used, which is simple and repeatable; the prefabricated installation saves the construction cycle and cost, and can be put into use immediately after installation.

[0016] The bottom plate of the shielding layer and the outer restraining reinforcement provide horizontal restraint to the reinforced concrete module; the steel bolts can pass through the multi-layer strip reinforced concrete module and square reinforced concrete module, which serves as both an assembly function and an overall shear strength.

[0017] Therefore, the modular prefabricated bomb shielding layer of reinforced concrete disclosed in this utility model can be composed of multiple layers of reinforced concrete modules. When it is hit, the top layer of reinforced concrete module is destroyed first. The impact kinetic energy and the internal energy generated by the explosion are consumed through collisions between reinforced concrete modules, deformation of the internal steel bars of the modules, cracking and scattering of concrete, collisions between reinforced concrete modules and steel screws, and deformation of steel screws. Through layer-by-layer weakening, the load on the main structure, personnel and facilities in the final impact process is reduced to the minimum. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the modular prefabricated reinforced concrete shielding layer of this utility model.

[0019] Figure 2This is a structural schematic diagram of the reinforcing cage of the strip-shaped reinforced concrete module of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the strip support template of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the strip-shaped reinforced concrete module before pouring.

[0022] Figure 5 This is an exploded view of the strip-shaped reinforced concrete module structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the overall structure of the strip-shaped reinforced concrete module after casting.

[0024] Figure 7 This is a structural schematic diagram of the steel reinforcement cage of the square reinforced concrete module of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the square support template of this utility model;

[0026] Figure 9 This is a schematic diagram of the square reinforced concrete module of this utility model before pouring.

[0027] Figure 10 This is an exploded view of the square reinforced concrete module structure of this utility model;

[0028] Figure 11 This is a schematic diagram of the overall structure of the square reinforced concrete module of this utility model after casting;

[0029] Figure 12 This is a schematic diagram of the base plate and steel screw structure of this utility model;

[0030] Figure 13 This is a schematic diagram illustrating the assembly effect of the first layer of bulletproof material in this utility model.

[0031] Figure 14 This is a schematic diagram showing the assembly effect of the first and second layers of this utility model;

[0032] Figure 15 This is a schematic diagram of the overall assembly effect of this utility model.

[0033] In the diagram: 1. Base plate, 2. Steel threaded rod, 3. Strip reinforced concrete module, 4. Steel threaded rod hole, 5. Lifting slot, 6. Square reinforcing cage, 7. Square reinforced concrete module, 8. Square support formwork, 9. Lifting handle, 11. External restraint reinforcement, 12. Welding point, 13. Longitudinal reinforcement, 14. Transverse reinforcement, 15. Stirrup, 16. Base plate, 17. Long side panel, 18. Narrow side panel, 20. Strip reinforcing cage, 21. Concrete. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] Example 1

[0036] like Figures 1-4 As shown, this utility model provides a modular prefabricated reinforced concrete bulletproof layer, including a base plate 1, on which multiple bulletproof units with square cross-sections are arranged, and multiple bulletproof units are spliced ​​together to form a bulletproof layer. The bulletproof layer is assembled from multiple bulletproof layers.

[0037] Each bulletproof unit includes four strip-shaped reinforced concrete modules 3 of the same size and one square reinforced concrete module 7. The square reinforced concrete module 7 is embedded in the middle gap formed by the four strip-shaped reinforced concrete modules 3 connected in sequence along the circumference. The strip-shaped reinforced concrete modules 3 and the square reinforced concrete module 7 are provided with longitudinal steel screws 2, which penetrate each bulletproof layer and the base plate 1.

[0038] The strip-shaped reinforced concrete module 3 and the square reinforced concrete module 7 on the adjacent bulletproof layers have opposite orientations and are intertwined.

[0039] Example 2

[0040] Based on Example 1, the side length of the square reinforced concrete module 7 is equal to the short side length of the strip reinforced concrete module 3, and the long side of the strip reinforced concrete module 3 is twice the short side.

[0041] Each strip-shaped reinforced concrete module 3 has 2 steel screws 2, and each square reinforced concrete module 7 has 1 steel screw 2. Each bulletproof unit has a total of 9 steel screws, and the 9 steel screws are centrally symmetrical.

[0042] The strip-shaped reinforced concrete module 3 includes a strip-shaped steel cage 20 and concrete 21 poured inside the strip-shaped steel cage 20; the strip-shaped steel cage 20 includes longitudinal bars 13 and transverse bars 14, which intersect perpendicularly to form a grid frame, and the outer frames of the upper and lower grid frames are fixedly connected by longitudinally arranged stirrups 15 to form the strip-shaped steel cage 20.

[0043] The upper surface of the strip reinforced concrete module 3 has four reserved hoisting slots 5 at the four corners. The hoisting slots 5 are distributed between two adjacent grids. The exposed horizontal or longitudinal bars at the hoisting slots 5 serve as hoisting handles 9 to provide a force point during hoisting.

[0044] Example 3

[0045] Based on Example 2, before pouring, a bottom panel 16 is set around the bottom of the strip-shaped steel cage 20, and a strip-shaped support template with an open top and closed sides is formed by the long side panel 17 and the narrow side panel 18 to facilitate concrete pouring. Each strip-shaped reinforced concrete module 3 has a pre-reserved longitudinal through steel bolt hole 4. Similarly, the square reinforced concrete module 7 is also equipped with a square support template 8 in the same way.

[0046] The bottom panel 16, the long side panel 17, and the narrow side panel 18 are all made of wood.

[0047] The outermost steel screw 2 on the surface bulletproof layer is connected by the outer restraint steel bar 11. The steel screw 2 and the outer restraint steel bar 11 are fixedly connected by welding to form a welding point 12.

[0048] The square steel cage 6 of the square reinforced concrete module 7 also adopts the structural mode of the steel cage of the strip reinforced concrete module 3.

[0049] Example 4

[0050] The base plate 1 is provided with screw holes corresponding to the position of the steel screw 2. One end of the steel screw 2 is fixedly connected to the base plate by bolts and nuts. The base plate 1 is made of steel plate and the outer surface is treated with anti-rust treatment.

[0051] Steel screw 2 uses large-diameter ordinary round steel bars, with one end tapped to make a nut. The steel screw is bolted to the base plate, that is, the nut at the end of the steel screw is screwed into the nut of the base plate, and the surface is treated with anti-rust treatment.

[0052] The length, width, and height ratio of the strip-shaped reinforced concrete module 3 is 2:1:1. Ordinary concrete is used for the concrete, and hot-rolled ribbed steel bars are used for the reinforcement. The internal structure is arranged with strip-shaped steel cages. During the casting process, holes for steel bolts and empty slots for hoisting are reserved. The holes for steel bolts are reserved so that the steel bolts can pass through, and the empty slots for hoisting are reserved so that they can be hoisted during transportation and installation.

[0053] Steel threaded rod hole 4: Use PVC pipe as a template for pre-reserved steel threaded rod holes in strip reinforced concrete module 3. Two steel threaded rod holes are reserved in one strip reinforced concrete module 3. The PVC pipe does not need to be removed after curing.

[0054] Square reinforced concrete module 7: The length, width and height ratio is 1:1:1. Ordinary concrete is used for the concrete and hot-rolled ribbed steel bars are used for the steel bars. Square steel cage 6 is arranged inside. During the casting process, steel screw holes and hoisting slots are reserved. Steel screw holes are reserved so that steel screws can pass through, and hoisting slots are reserved so that they can be hoisted during transportation and installation.

[0055] 7. Pre-reserved steel threaded rod holes for square reinforced concrete modules: PVC pipes are used as templates for pre-reserved steel threaded rod holes during the pouring of square reinforced concrete modules. One steel threaded rod hole is reserved for each square reinforced concrete module. The PVC pipes do not need to be removed after curing. Alternatively, foam blocks are used as templates for pre-reserved steel threaded rod holes during the pouring of square reinforced concrete modules. These blocks are easy to remove after curing. Four hoisting slots are reserved for each square reinforced concrete module. The exposed steel bars when creating the hoisting slots provide stress points during hoisting.

[0056] It is recommended to use steel bars for the outer restraint reinforcement 11, which can be obtained by cutting steel plates. The main method is to rely on them to provide overall restraint for the bulletproof layer by welding with steel bolts. Spot welding can be used to weld the steel bolts to the outer restraint reinforcement.

[0057] Example 5

[0058] The specific construction process of the modular prefabricated reinforced concrete bulletproof layer of this utility model is as follows:

[0059] like Figures 2-6 The diagram shows the construction process for strip-shaped reinforced concrete module 3:

[0060] like Figure 2 The diagram shows the process of binding the reinforcing bars in the 3rd rebar hole of the strip reinforced concrete module, which involves binding the longitudinal bars, transverse bars, and stirrups into a whole.

[0061] like Figure 3 As shown, the formwork support process for the strip reinforced concrete module 3 is achieved by nailing the wooden bottom panel, long side panel, and narrow side panel together using a manual nail gun.

[0062] like Figure 4 , Figure 5 The diagram shows the pouring process for the strip reinforced concrete module 3, in which concrete is pumped into the assembled formwork and the strip reinforcement cage.

[0063] like Figure 6 As shown, this is the strip reinforced concrete module 3 after the formwork has been removed and assembled and cured.

[0064] like Figures 7-11 The diagram shows the construction process of the square reinforced concrete module 7, which is consistent with the construction process of the strip reinforced concrete module 3.

[0065] Example 6

[0066] (2) Installation process

[0067] like Figures 12-15 The image shows the installation process of a modular, prefabricated reinforced concrete bulletproof layer:

[0068] like Figure 12 As shown, this is the assembly process of the base plate 1 and the steel screw 2. The position of the steel screw 2 needs to be positioned on the base plate 1 in advance. At each position of the steel screw 2, the base plate 1 is tapped using an electric tapping machine. One end of each steel screw 2 is tapped and then the steel screw 2 is screwed into the base plate 1.

[0069] like Figure 13 As shown, this is the installation process for the first layer of the modular prefabricated reinforced concrete bulletproof layer. A crane is used to lift the strip reinforced concrete module 3 through two steel wire ropes and four hooks, and then the steel screw rod 2 passes through the steel screw rod hole 4. Similarly, a crane is used to lift the square reinforced concrete module 7 through the reserved steel screw rod hole through two steel wire ropes and four hooks. The ratio of the number of strip reinforced concrete modules 3 to square reinforced concrete modules 7 in each layer of the bulletproof layer is 4:1, and the strip reinforced concrete modules 3 are aligned with the square reinforced concrete modules 7 in a clockwise direction.

[0070] like Figure 14 As shown, this is the installation process of the second layer of the modular prefabricated reinforced concrete shielding layer. The installation process is the same as that of the first layer, but the direction of the strip reinforced concrete module 3 around the square reinforced concrete module 7 is opposite to that of the first layer, which is counterclockwise.

[0071] like Figure 15 As shown, this is the installation process of the top layer of the modular prefabricated reinforced concrete shielding layer. The installation process is the same as that of the first and second layers. However, the direction of the strip reinforced concrete module 3 around the square reinforced concrete module 7 is opposite to that of the second layer, but the same as that of the first layer, which is clockwise. It can be seen that the direction of the strip reinforced concrete module 3 around the square reinforced concrete module 7 is the same for every other layer.

[0072] like Figure 1 As shown, this is the modular prefabricated reinforced concrete bulletproof layer fixing process. The outer restraint steel bars 11 are connected to the outermost steel bolts 2 on the top surface of the bulletproof layer, and the intersection is welded to form a welding point 12.

[0073] The specific innovative points of this utility model are as follows:

[0074] (1) If an integral cast-in-place bulletproof layer is used, the support formwork, concrete pouring, formwork removal and concrete curing will take at least one month. If the volume is large, the time will be further increased by using layered pouring. If this utility model is implemented and mass-produced, all modules will be customized by the manufacturer. Only the size and number of modules need to be determined, and then they will be transported to the site for assembly, which will greatly shorten the construction cycle.

[0075] (2) The energy dissipation mechanism of the integral bulletproof layer includes concrete cracking and internal steel deformation, and the energy dissipation mechanism is relatively simple. The energy dissipation mechanism of the modular assembled bulletproof layer includes concrete cracking and scattering, collision between reinforced concrete modules, deformation of internal steel reinforcement of modules, collision between reinforced concrete modules and steel screws, deformation of steel screws, etc., and the energy dissipation mechanism is rich.

[0076] (3) In terms of the later operation and maintenance of the bulletproof layer, the overall cast-in-place bulletproof layer still adopts the cast-in-place repair method, and the maintenance cycle is close to one month. If the modular assembled bulletproof layer is adopted, it is only necessary to remove the damaged module, clean up the empty space, and replace the new module in the original position.

[0077] The above description is only a preferred embodiment of the present utility model. For parts that do not require creative effort in circuit control, signal control and transmission, please refer to the prior art. However, the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Modular prefabricated reinforced concrete blast layer, characterized by: The application relates to a bulletproof layer, which comprises a bottom plate (1) provided with a plurality of bulletproof units in square cross section, the bulletproof units are spliced to form a bulletproof layer, and the bulletproof layer is assembled by a plurality of bulletproof layers. Each bulletproof unit comprises four strip-shaped reinforced concrete modules (3) of the same size and a square reinforced concrete module (7) embedded in the middle vacancy formed by the four strip-shaped reinforced concrete modules (3) which are sequentially and oppositely connected; the strip-shaped reinforced concrete modules (3) and the square reinforced concrete module (7) are provided with longitudinal steel screws (2) penetrating through each bulletproof layer. The strip-shaped reinforced concrete modules (3) and the square reinforced concrete module (7) on adjacent bulletproof layers are oppositely arranged and staggered.

2. The modular assembly type reinforced concrete blast shelter according to claim 1, characterized in that: The side length of the square reinforced concrete module (7) is equal to the short side length of the strip-shaped reinforced concrete module (3), and the long side of the strip-shaped reinforced concrete module (3) is twice the short side.

3. The modular assembly reinforced concrete blast shield according to claim 2, characterized in that: Each strip-shaped reinforced concrete module (3) is provided with two steel screws (2), the square reinforced concrete module (7) is provided with one steel screw (2), and each bulletproof unit is provided with nine steel screws which are centrally symmetrical.

4. The modular assembly type reinforced concrete blast shelter according to claim 3, characterized in that: The strip-shaped reinforced concrete module (3) comprises a strip-shaped reinforcing cage (20) and concrete (21) poured in the strip-shaped reinforcing cage (20); the strip-shaped reinforcing cage (20) comprises longitudinal reinforcement (13) and transverse reinforcement (14), the longitudinal reinforcement (13) and the transverse reinforcement (14) are perpendicularly intersected to form a grid frame, and the outer frames of the upper and lower grid frames are fixedly connected by means of longitudinally arranged stirrups (15) to form the strip-shaped reinforcing cage (20).

5. The modular assembly reinforced concrete blast shield according to claim 4, wherein, The strip-shaped reinforced concrete module (3) is provided with hoisting empty grooves (5) reserved at the four corners of the upper surface, the hoisting empty grooves (5) are arranged between adjacent two grids, and the transverse reinforcement at the hoisting empty grooves (5) is exposed to serve as a hoisting handle (9).

6. The modular assembly reinforced concrete blast shield according to claim 4, wherein: Before pouring, each strip-shaped reinforced concrete module (3) is provided with a longitudinally penetrating steel screw hole (4).

7. The modular assembly reinforced concrete blast shield according to claim 4, wherein: The outermost circle of steel screws (2) on the surface bulletproof layer are connected by means of peripheral constraint reinforcement (11), the steel screws (2) and the peripheral constraint reinforcement (11) are fixedly connected by means of welding at the intersection to form welding points (12).

8. The modular assembly reinforced concrete blast shield according to claim 4, wherein, The square reinforcing cage (6) of the square reinforced concrete module (7) also adopts the structure mode of the reinforcing cage of the strip-shaped reinforced concrete module (3).

Images