CN116538863A

CN116538863A - High-resistance wet-connection assembled bullet-shielding layer and preparation method thereof

Info

Publication number: CN116538863A
Application number: CN202310474255.0A
Authority: CN
Inventors: 孔祥振; 王子国; 孙晓晨; 方秦; 李展; 孙宇雁
Original assignee: Qingdao University of Technology; Army Engineering University of PLA
Current assignee: Army Engineering University of PLA
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-08-04
Anticipated expiration: 2043-04-28
Also published as: CN116538863B

Abstract

The invention discloses a high-resistance wet-connection assembled bullet-shielding layer and a preparation method thereof, wherein the bullet-shielding layer is subjected to direct impact of a ground bullet and is of a single-layer or multi-layer structure, each layer of structure is assembled by a plurality of prefabricated members through reserved seams, a reinforcement cage is hoisted or bound in the seams, then the prefabricated members are connected into a whole by pouring high-fluidity concrete such as self-compacting concrete in the seams, the prefabricated members between the layers can be arranged in a seam-aligned or staggered manner, the staggered arrangement can reduce weak points of the bullet-shielding layer, and the penetration resistance of the bullet-shielding layer is improved. The precast element of the bullet-proof layer is high-strength fiber concrete or prestress constraint high-strength concrete, and the compressive strength of the high-strength concrete is not lower than 120MPa. The prefabricated member of the prefabricated assembly type bullet-proof layer is prefabricated in a factory, so that the utilization rate of materials is controlled, and the mechanical properties of the materials are reliably ensured.

Description

High-resistance wet-connection assembled bullet-shielding layer and preparation method thereof

Technical Field

The invention belongs to the technical field of military facility protection, and particularly relates to a high-resistance wet-connection fabricated bullet-proof layer and a preparation method thereof.

Background

In recent years, attacks mostly occur in the modes of ballistic, explosion, impact and the like, the ground penetrating bullet strikes the target with higher and higher precision, the outburst prevention capability of the ground penetrating bullet is gradually enhanced, the ground penetrating bullet becomes a powerful weapon for destroying enemy firm work and underground targets, life and property losses are caused in the global scope, and the ground penetrating bullet brings great challenges to the protection engineering system of China. Thus, the destructive effect of the drill floor bullet and the protection research thereof are being widely studied worldwide.

The form of engineering protection employed by civil air defense engineering against weapon impact is typically a layered protective structure, typically consisting of camouflage layers, bullet-proof layers, dispersion layers, and support structures. The anti-normal weapon and nuclear weapon performance is good, so that the anti-normal weapon and nuclear weapon can be widely applied to civil air defense engineering. Where the ballistic layer is designed to resist impact penetration by a weapon, cast-in-place plain concrete or high strength concrete (e.g., C100 concrete with a compressive strength of 100 MPa) is typically used. The high-strength concrete bullet-proof layer has large casting volume, relates to large-volume casting, and has difficult on-site mechanical property to be effectively ensured, so that the mechanical property difference between on-site casting and a standard maintenance test piece is larger. The bullet-proof layer can also be constructed by adopting a wet-connection method, and the method has the advantages of high construction speed, reliable mechanical properties of prefabricated member materials and the like, but the exposed steel bars are required to be bound or welded on a construction site, so that the workload of workers is increased, a large amount of engineering construction period is consumed, and the connection performance between the prefabricated members cannot be guaranteed forcefully. According to the invention, after the large prefabricated member is spliced in place, the reinforcement cage can be quickly hoisted, the exposed reinforcement of the prefabricated member is not required to be bound or welded on site, the labor and material resources for site construction are saved, and meanwhile, the reinforcement cage is prefabricated in a factory, so that the quality can be ensured. The invention pours the concrete with large fluidity in the joint, is favorable for restraining the concrete, can ensure the bonding performance among the assembly blocks reliably, improves the integrity of the concrete member, and has the penetration resistance of the novel earth boring bullet equivalent to that of the integral cast-in-situ bullet-shielding layer.

In view of the foregoing, it is desirable to provide a novel assembled high-resistance bullet-shielding layer with fast construction and guaranteed quality, so as to effectively counter the striking of a novel ground penetrating bullet.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides a high-resistance wet-connection assembled bullet-shielding layer and a preparation method thereof, and solves the problems of low construction speed and difficult quality control of the existing high-resistance bullet-shielding layer.

In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:

the invention provides a high-resistance wet-connection fabricated bullet-proof layer, at least one layer structure, wherein the layer structure comprises a plurality of spliced prefabricated members;

a joint is arranged between the prefabricated members, and a reinforcement cage is arranged in the joint; and the prefabricated parts are connected into a whole by pouring concrete in the joints.

Further, the bullet-shielding layer comprises a plurality of layer structures;

the preforms between the multiple layer structures are arranged in a flush or staggered joint.

Further, the bullet-proof layer prefabricated member is made of high-strength concrete, the high-strength concrete comprises high-strength fiber concrete and prestress constraint high-strength concrete, and the compressive strength of the high-strength concrete is not lower than 120MPa;

the high-strength concrete is 1m ³ The required material proportion comprises: 532kg/m high strength cement ³ 230kg/m of active powder ³ 623kg/m of sand ³ 1018kg/m of stone ³ 122kg/m of water ³ 21kg/m water reducing agent ³ Steel fibre 25kg/m ³ ；

The design volume of the prefabricated part is 1-8 m, the opposite margin is 0.5-3 m, and the thickness is 0.4-2 m.

Further, the prefabricated part is a regular quadrangular concrete prefabricated part; alternatively, the preform is a hexagonal prism.

Further, the surface reinforcement ratio of the bullet-proof layer is designed according to the bonding strength of wet-joint concrete poured between adjacent prefabricated members;

the width of the wet joints between the prefabricated parts is set to be 20cm;

the concrete filling the wet joints is high-flow concrete or self-compacting concrete.

Further, a plurality of prefabricated members are arranged at the same reserved prefabricated member position of the reinforcement cage, the top of each prefabricated member is identical to the bottom area of the prefabricated member on the prefabricated member, and the prefabricated members are spliced to form a complete reinforcement cage reserved shape.

In a second aspect, the present invention provides a method for preparing a bullet-proof layer according to the first aspect, comprising the steps of:

preparing a prefabricated member;

assembling; firstly, leveling prefabricated members, assembling a plurality of layers of surface layers in a side alignment mode, wherein the prefabricated members are closely contacted with each other, wet joints are reserved between each row and each column of prefabricated members of the vertical layer, subsequent hoisting of the reinforcement cage is facilitated, and the width of the reserved wet joints is 20cm;

hoisting or binding a reinforcement cage; hoisting the prefabricated reinforcement cage into the reserved wet joint of the piled prefabricated member, wherein the periphery of the reinforcement cage is larger than the periphery volume of the piled prefabricated member;

supporting edge molds; according to the volume of the reinforcement cage, a side template is arranged on the periphery of the reinforcement cage, a release agent is coated on the inner surface of the reinforcement cage, the template is required to be moved outwards and is flush with or higher than the prefabricated member, and a certain thickness of a protective layer is reserved;

pouring concrete; pouring concrete along the wet joints reserved by the prefabricated parts, and pouring a concrete pile high layer to serve as a protective layer to protect the reinforcement cage at the top of the reinforcement cage;

curing and earthing; and after the wet joint concrete reaches the preset strength, removing the template, and covering with soil to obtain the wet joint assembly bullet-proof layer.

Further, if a permanent side template which does not need to be removed is installed, the template is fixed through backfill soil, concrete is poured to fill the wet joint, then maintenance and earthing are carried out, but only maintenance is needed, the template is not needed to be removed, and after the concrete reaches the preset strength, the earthing is directly carried out.

Further, the method further comprises a stitch-bonding wet-bond preform assembly method comprising:

assembling a first layer surface of the bullet-proof layer; firstly, leveling assembly prefabricated members, and assembling according to a side alignment mode, wherein wet joints are reserved between each row of prefabricated members and each column of prefabricated members of a vertical surface layer, so that a reinforcement cage can be conveniently hoisted subsequently;

assembling a second layer surface of the bullet-proof layer; after the first layer of the bullet-proof layer is assembled, coating epoxy resin or mortar on the top of the first layer of the prefabricated member, and carrying out seam-aligned assembly bonding on the prefabricated member;

assembling a third layer surface of the bullet-proof layer; after the second layer of the bullet-proof layer is assembled, coating epoxy resin or mortar on the top of the second layer of the prefabricated member, and carrying out seam-aligned assembly bonding on the prefabricated member;

Furthermore, the prefabricated member is a quadrangular prism, the bullet-shielding layer is assembled by adopting a method of fixing the reinforcement cage on the backing plate and then hoisting the prefabricated member, wherein the prefabricated member is a quadrangular prism, the side surface of the prefabricated member is provided with a lifting hook which is convenient to hoist, the lifting hook protruding outwards of the prefabricated member can pass through the reinforcement cage,

the method also comprises a wet-connection hoisting quadrangular prefabricated member assembling method, wherein the wet-connection hoisting quadrangular prefabricated member assembling method comprises the following steps of:

fixing a reinforcement cage; firstly, fixing a reinforcement cage or binding reinforcement on a backing plate, wherein the reinforcement cage reserves the position for placing prefabricated members and wet joints;

hoisting the prefabricated member; hoisting the prefabricated member to a reserved position of the reinforcement cage, wherein the prefabricated member can be placed on a backing plate;

curing and earthing; after the wet joint concrete reaches the preset strength, removing the template, and implementing earthing concealment to prepare the wet joint assembly bullet-proof layer;

and/or the number of the groups of groups,

the method further comprises a staggered joint wet joint assembly method, which comprises the following steps:

step (1) assembling a first layer surface of the bullet-proof layer; firstly, leveling assembly prefabricated members, assembling a surface layer according to a side alignment mode, reserving wet joints between each row of prefabricated members and each column of prefabricated members, respectively adding a row of half-width bullet-proof layer prefabricated members on two vertical sides of the surface layer, and adjusting the length and the width of the surface layer so as to facilitate upper layer staggered joint; hoisting the reinforcement cage into the reserved wet joint of the piled prefabricated member, wherein two vertical edges of the reinforcement cage are respectively added with a row of half-width reinforcement bars, and the periphery of the reinforcement cage is larger than the periphery volume of the piled prefabricated member;

step (2) assembling a second layer surface of the bullet-proof layer; assembling a second layer surface along the diagonal direction of the first layer surface of the bullet-proof layer by 1/2 of the side length of the prefabricated member in staggered joint, respectively repairing two rows of semi-wide bullet-proof layer prefabricated members of the second layer surface on two opposite sides of the two rows of semi-wide prefabricated members of the first layer surface due to staggered joint, aligning the peripheral side surfaces of the upper layer surface and the lower layer surface up and down, and reserving the wet joint width to be 20cm; then hoisting the reinforcement cage to two vertical edges of the reinforcement cage in the piled prefabricated member reserved wet joint, and respectively adding two rows of second-layer half-width reinforcement bars, wherein the periphery of the reinforcement cage is larger than the periphery volume of the piled prefabricated member;

step (3) assembling a third layer surface of the bullet-proof layer in a staggered manner; and (3) adopting the mode of staggered joint splicing and hoisting the third layer of surface in the step (2), if more layers of surfaces are required to be paved, repeating the splicing mode by pushing the layers, wherein the height of the reinforcement cage after the completion of the assembly is smaller than the height of the spliced prefabricated member;

step (4) inserting reinforcing steel bars and standing a mould to pour concrete; after the assembly of each layer of the bullet-proof layer is completed, the steel bars are vertically inserted into the staggered joint of the prefabricated members of each layer to increase the connection between the layers; then installing a template around the mould, wherein the template needs to be moved outwards to leave a certain thickness of a protective layer, and pouring concrete along the reserved wet joint to fill the wet joint;

and (5) removing the template after the wet joint concrete reaches the preset strength, and covering the template with soil to obtain the wet joint assembly bullet-proof layer.

Compared with the prior art, the invention has the beneficial effects that:

compared with the existing high-strength concrete bullet-proof layer which is resistant to novel drilling bullets and is cast in large volume on site, the method has the advantages that after the large prefabricated member is spliced in place, a reinforcement cage can be quickly hoisted, then a formwork is supported, high-fluidity concrete is cast, the wet splicing method construction is flexible, the construction speed is high, various prefabricated members such as plain concrete prefabricated members and high-resistance steel pipe prestress constraint prefabricated members can be adopted, the reinforced concrete frame constraint of the prefabricated members formed by the reinforcement cage and cast-in-place concrete is adopted, the high-strength concrete bullet-proof layer has good integrity, excellent anti-strong dynamic load performance, reliable and guaranteed material mechanical performance and the like, and the construction comprehensive cost is equivalent to that of integral cast-in-place construction.

Compared with the existing assembly method of reserving wet joints and pouring after grouting materials and the like are adopted, the method can be used for rapidly hoisting the reinforcement cage after the large prefabricated member is spliced in place, and the exposed reinforcement of the prefabricated member is not required to be bound or welded on site, so that the manpower and material resources for site construction are saved, and meanwhile, the quality of the reinforcement cage prefabricated in a factory can be ensured. And the high-fluidity concrete is poured in the joints, so that the constraint concrete is facilitated, the bonding performance between the assembly blocks can be reliably ensured, the integrity of the concrete member is improved, and the penetration resistance of the novel ground penetrating bullet is equivalent to that of the integral cast-in-situ bullet-shielding layer.

The pre-stress constraint high-strength concrete can be adopted as the pre-stress prefabricated member in the invention, the pre-stress confining pressure effect is applied to the concrete through the high-strength ductile material, the penetration resistance of a single prefabricated member can be effectively improved, and the thickness of the anti-penetration layer is reduced.

The prefabricated member of the high-strength bullet-proof layer is prefabricated in a factory, so that the utilization rate of the material is controlled, and the mechanical property of the material is reliably ensured; the rapid construction is convenient, firstly, the prefabricated parts of the bullet-proof layer are arranged in a arraying way, the reinforcement cage is hoisted, and then the prefabricated parts are integrally connected by adopting a high-fluidity ultra-high-performance concrete material through one-time pouring, so that the construction period is short. The preparation method of the invention can greatly reduce the construction time and the template usage. The comprehensive cost is equivalent to that of integral pouring, but the difficult problem of common process construction of the ultra-high performance concrete on site can be effectively overcome. The invention has wide application prospect in the field of protection of underground military implementation such as command communication, weapon equipment and the like.

Drawings

FIG. 1 is a schematic view of a block stacking;

fig. 2 is a schematic view of a hoisting reinforcement cage;

FIG. 3 is a schematic illustration of a formwork pour;

FIG. 4 is a schematic view of a wet splice seam assembly bullet screen;

FIG. 5 is a schematic view of a block bonded stacking;

FIG. 6 is a schematic view of a hoisting quadrangular prism preform;

FIG. 7 is a schematic diagram of a formwork pouring of a hoisting preform;

FIG. 8 is a schematic view of a wet-connect assembled bullet-proof layer of a hoisting preform;

FIG. 9 is a schematic view of a lifting multilayer preform;

fig. 10 is a schematic view of a first layer of reinforcement cage being lifted by staggered joint;

FIG. 11 is a schematic view of a first layer of fault-seam hoisting bullet-proof layer;

fig. 12 is a schematic view of a staggered hoisting second layer of reinforcement cage;

fig. 13 is a schematic view of a formwork erection inserted rebar;

FIG. 14 is a schematic view of a joint-in-joint assembly bullet-shielding layer;

FIG. 15 is a schematic view of a hoisted hexagonal prism preform;

FIG. 16 is a schematic diagram of a formwork pour of a lifting preform;

FIG. 17 is a schematic view of a hanging wet connect fitting bullet screen;

fig. 18 is a schematic view of a hoisting multi-layered hexagonal prism preform.

In the figure: 1. a preform; 2. a wet seam; 3. a reinforcement cage; 4. pouring concrete; 5. an adhesive; 6. and (5) a template.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.

In the description of the present embodiment, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are presented, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present embodiment and simplifying the description, and does not indicate or imply that the indicated apparatus or element must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present embodiment.

Embodiment one: and (5) assembling the seam-aligned wet-joint prefabricated parts.

In the embodiment, wet joints 2 are reserved on a leveling layer on the surface of a structural layer, and a bullet-proof layer prefabricated member 1 is assembled to form a bullet-proof layer structure with a multi-layer structure. In this embodiment, the basic constituent unit of the assembled bullet-proof layer is a regular quadrangular concrete prefabricated member 1, wherein a wet joint 2 is reserved between adjacent prefabricated members 1, so that the reinforcement cage 3 is convenient to hoist subsequently. The surface reinforcement ratio of the bullet-proof layer is designed according to the bonding strength of the wet-joint concrete poured between the adjacent prefabricated members 1, namely, the higher the bonding strength of the wet-joint concrete is, the smaller the reinforcement ratio is, so that the wet joint 2 is not pulled to crack preferentially. The precast 1 concrete is high-strength fiber concrete with the strength not lower than 120MPa, and the concrete 1m3 comprises the following materials in proportion: 532kg/m3 of high-strength cement, 230kg/m3 of active powder, 623kg/m3 of sand, 1018kg/m3 of stone, 122kg/m3 of water, 21kg/m3 of water reducer and 25kg/m3 of steel fiber. For the convenience of transportation and hoisting assembly, the design volume of the prefabricated member 1 of the embodiment is 0.1-12 m, preferably 1-8 m, the opposite edge distance is 0.5-3 m, and the thickness is 0.4-2 m. The length, width and height of the bullet-proof layer prefabricated member 1 are respectively 1m multiplied by 0.6m, the weight is 1.44 tons, and the transportation and the hoisting are convenient. The preparation method comprises the following specific preparation steps:

assembling in the step (1). Firstly, the prefabricated members 1 are assembled flatly, multiple layers of surface layers are assembled in a side alignment mode, as shown in fig. 1, the prefabricated members 1 among the surface layers are in close contact, wet joints 2 are reserved among each row of prefabricated members 1 and each column of prefabricated members 1 of the vertical surface layers, subsequent hoisting of reinforcement cages 3 is facilitated, and the width of the reserved wet joints 2 is 20cm.

And (2) hoisting or binding the reinforcement cage 3. And hoisting the prefabricated reinforcement cage 3 into the reserved wet joint 2 (shown in figure 2) of the piled prefabricated member 1, wherein the periphery of the reinforcement cage 3 is larger than the periphery volume of the piled prefabricated member 1.

And (3) supporting the side mold. The side templates 6 are installed on the outer periphery of the reinforcement cage 3 according to the volume of the reinforcement cage 3, and the release agent is coated on the inner surface of the side templates, so that the templates 6 need to be moved outwards and flush with the prefabricated member 1 or higher than the prefabricated member 1, and a certain protective layer thickness is reserved (as shown in fig. 3).

And (4) pouring concrete 4. Concrete 4 is poured along the wet joints 2 reserved by the prefabricated parts 1, and a pile of the concrete 4 is also required to be poured on the top of the reinforcement cage 3 to serve as a protective layer for protecting the reinforcement cage 3.

And (5) curing and earthing. After the concrete of the wet joint 2 reaches the preset strength, the template 6 is removed, the covering is carried out, and the prepared wet joint alignment joint assembly bullet-proof layer is shown in fig. 4.

In this example, the width of the wet joint 2 between the preforms 1 is set to 20cm.

The concrete filling wet joints 2 described in step 4 has a high fluidity or a self-compacting concrete is used.

For step 3, if a permanent side form 6 which does not need to be removed is installed, the form 6 is fixed by backfill, then the concrete 4 is poured to fill the wet joint 2, and then step 5 is performed, but only maintenance is needed, the form 6 does not need to be removed, and after the concrete reaches the preset strength, the soil is directly covered. In this way, time for removing the form 6 can be saved.

Embodiment two: and (5) assembling the seam-aligned wet-bonding prefabricated member.

As shown in fig. 5, this embodiment is different from the embodiment in that the preform 1 between the layers of this embodiment is bonded and assembled using epoxy resin or mortar. The specific manufacturing steps are as follows:

and (3) assembling a first layer surface of the bullet-proof layer. Firstly, the prefabricated members 1 are assembled flatly and assembled in a side alignment mode, wherein wet joints 2 are reserved between each row of prefabricated members 1 and each column of prefabricated members 1 of the vertical surface layer, and subsequent hoisting of the reinforcement cage 3 is facilitated.

And (2) assembling a second layer surface of the bullet-proof layer. After the first layer of the bullet-proof layer is assembled, epoxy resin or mortar is coated on the top of the first layer of the prefabricated member 1, and the prefabricated member 1 is assembled and bonded in a seam-aligned manner.

And (3) assembling a third layer surface of the bullet-proof layer. Example step 2 is repeated.

And (4) hoisting or binding the reinforcement cage 3. This step is the same as step 2 of the first embodiment.

And (5) supporting the side mold. This step is the same as step 3 of the first embodiment.

And (6) pouring concrete 4. This step is the same as step 4 of the first embodiment.

And (7) curing and earthing. This step is the same as step 5 of the first embodiment.

The concrete filling wet joints 2 described in step 6 has a high fluidity or a self-compacting concrete is used.

For step 5, if a permanent side form 6 which does not need to be removed is installed, the form 6 is fixed by backfill, then the concrete 4 is poured to fill the wet joint 2, and then step 7 is performed, but only maintenance is needed, the form 6 does not need to be removed, and after the concrete reaches the preset strength, the soil is directly covered. This arrangement saves time in removing the form 6.

Embodiment III: and (5) assembling the wet-connection hoisting quadrangular prefabricated member.

The first difference between the embodiment and the embodiment is that the embodiment adopts the method of fixing the reinforcement cage 3 on the backing plate and then hoisting the prefabricated member 1 to assemble the bullet-proof layer, wherein the prefabricated member 1 is a quadrangular prism, the side surface is provided with a lifting hook for convenient hoisting, the lifting hook protruding outwards of the prefabricated member 1 is required to ensure that the prefabricated member 1 can pass through the reinforcement cage 3, and the prefabricated member 1 can be placed on the backing plate. The specific manufacturing steps are as follows:

and (3) fixing the reinforcement cage 3. First, the reinforcement cage 3 or binding reinforcement is fixed on the backing plate, wherein the reinforcement cage 3 reserves the position for placing the prefabricated member 1 and the wet joint 2, as shown in fig. 6.

And (2) hoisting the prefabricated part 1. The prefabricated member 1 is hoisted to a reserved position of the reinforcement cage 3, and as shown in fig. 6, the prefabricated member 1 can be just placed on a backing plate.

And (3) supporting the side mold. This step is the same as step 3 of the first embodiment, as shown in fig. 7.

And (4) pouring concrete 4. This step is the same as step 4 of the first embodiment, as shown in fig. 7.

And (5) curing and earthing. This step is the same as step 5 of the first embodiment, and the resulting bullet-proof layer is shown in fig. 8.

Embodiment four: and (5) wet-joining and hoisting a plurality of quadrangular prefabricated members for assembly.

As shown in fig. 9, the third difference between the present embodiment and the third embodiment is that the present embodiment places a plurality of prefabricated members 1 at the same position of the reserved prefabricated member 1 of the reinforcement cage 3, so that the quality of hoisting a single prefabricated member 1 can be reduced, the hoisting construction of a large-scale shielding layer is facilitated, the top area of the first layer of prefabricated member 1 is the same as the bottom area of the second layer of prefabricated member 1, and the like, and a plurality of prefabricated members 1 are assembled to form a complete quadrangular. The specific manufacturing steps are the same as those of the third embodiment.

Fifth embodiment: and (5) joint-staggered wet joint assembly.

As shown in fig. 10-12, the first difference between this embodiment and the embodiment is that this embodiment assembles the bullet-proof layer prefabricated member 1 on the leveling layer on the surface of the structural layer, so as to form the bullet-proof layer structure with a multi-layer structure, and the structural layers are overlapped in a staggered manner, so that the weak points of the bullet-proof layer are reduced, the crack formation and development can be hindered, the penetration energy is consumed, and the penetration resistance of the structure is improved. The preparation method comprises the following specific preparation steps:

step (1) assembling the first layer of the bullet-proof layer. Firstly, the prefabricated members 1 are assembled flatly, a surface layer is assembled according to a side alignment mode, wet joints 2 are reserved between each row of prefabricated members 1 and each column of prefabricated members 1, a row of half-width bullet-proof layer prefabricated members 1 are respectively added to two vertical edges of the surface layer, and the length and the width of the surface layer are adjusted so as to facilitate upper layer staggered joints (as shown in figure 10). Then hoisting the reinforcement cage 3 into the reserved wet joint 2 of the piled prefabricated member 1 (as shown in fig. 11), wherein two vertical sides of the reinforcement cage 3 are respectively added with a row of half-width reinforcement bars, and the periphery of the reinforcement cage 3 is larger than the peripheral volume of the piled prefabricated member 1.

And (2) assembling a second layer surface of the bullet-proof layer. And assembling second layers along the diagonal direction of the first layers of the bullet-proof layers by 1/2 of the prefabricated members 1 in side length in staggered joint, and respectively repairing the two half-width bullet-proof layer prefabricated members 1 of the two rows of second layers on the two opposite sides of the two rows of half-width prefabricated members 1 of the first layers due to staggered joint so as to align the peripheral side surfaces of the upper layer and the lower layer up and down, wherein the width of the reserved wet joint 2 is 20cm. Then hoisting the reinforcement cage 3 into the reserved wet joint 2 (as shown in fig. 12) of the piled prefabricated member 1, and respectively adding two rows of second-layer half-width reinforcement bars to the two vertical edges of the reinforcement cage 3, wherein the periphery of the reinforcement cage 3 is larger than the periphery volume of the piled prefabricated member 1.

And (3) assembling a third layer surface of the bullet-proof layer by staggered joint. And (3) adopting the mode of staggered joint splicing and hoisting the third layer of surface in the step (2), if more layers of surfaces are required to be paved, repeating the splicing mode by pushing the layers, and the height of the reinforcement cage 3 after the completion of the assembly is smaller than the height of the spliced prefabricated member 1.

And (4) inserting reinforcing steel bars and standing a mould to pour the concrete 4. After the assembly of each layer of the bullet-proof layer is completed, the steel bars are vertically inserted into the staggered joint of the prefabricated member 1 of each layer to increase the connection between the layers (as shown in fig. 13). And then installing the template 6 around the periphery, wherein the template 6 needs to be moved outwards to leave a certain thickness of protective layer, and pouring concrete 4 along the reserved wet joint 2 to fill the wet joint 2.

And (5) curing and earthing. This step is the same as step 5 of the example and the resulting wet joint staggered mounting bullet-proof layer is shown in fig. 14.

For step 4, if a permanent side form 6 which does not need to be removed is installed, the form 6 is fixed by backfill, then the concrete 4 is poured to fill the wet joint 2, and then step 5 is performed, but only maintenance is needed, the form 6 does not need to be removed, and after the concrete reaches the preset strength, the soil is directly covered. In this way, time for removing the form 6 can be saved.

Example six: and (5) assembling the wet-connection hoisting hexagonal prism prefabricated member.

As shown in fig. 15, the difference between the present embodiment and the third embodiment is that the prefabricated member 1 adopted in the present embodiment is a hexagonal prism, and the specific manufacturing steps are as follows:

and (3) fixing the reinforcement cage 3. This step is the same as step 1 of the third embodiment, as shown in fig. 15.

And (2) hoisting the prefabricated part 1. This step is the same as step 2 of the third embodiment, as shown in fig. 15.

And (3) supporting the side mold. This step is the same as step 3 of the third embodiment, as shown in fig. 16.

And (4) pouring concrete 4. This step is the same as step 4 of the third embodiment, as shown in fig. 16.

And (5) curing and earthing. This step is the same as step 5 of example three, and the resulting bullet-proof layer is shown in fig. 17.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of the invention, "a plurality" means two or more, unless otherwise specifically and clearly defined.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the invention.

Claims

1. A high resistance wet-laid fabricated armor characterized by at least one layer structure comprising a plurality of assemblable preforms;

2. The high resistance wet connect fabricated armor of claim 1 wherein said armor comprises a plurality of layers;

3. The high resistance wet connect fabricated armor of claim 1 wherein the armor preform is made of high strength concrete comprising high strength fiber concrete and prestressed high strength concrete, the high strength concrete having a compressive strength of not less than 120MPa;

The design volume of the prefabricated part is 1-8 m, the section surface edge distance is 0.5-3 m, and the thickness is 0.4-2 m.

4. The high resistance wet connect fabricated armor of claim 1 wherein voids matching the shape of said preform are reserved in said reinforcement cage;

the prefabricated member is a regular quadrangular concrete prefabricated member; alternatively, the preform is a hexagonal prism.

5. The high resistance wet connect fabricated armor of claim 1 wherein the face reinforcement of the armor is designed according to the bond strength of the wet connect concrete post-poured between adjacent preforms;

the width of the wet joints between the prefabricated parts is set to be 20cm;

6. The high resistance wet connect fabricated armor of claim 1 wherein a plurality of preforms are disposed at the same preformed preform location of the reinforcement cage, the top of each preform being the same as the bottom area of the preform thereon, the plurality of preforms being assembled to form a complete reinforcement cage preformed shape.

7. A method of preparing a ballistic layer as claimed in any one of claims 1 to 6, comprising the steps of:

preparing a prefabricated member;

8. The method of manufacturing a bullet-proof layer of claim 7 wherein if a permanent side form is installed without removal, the form is secured by backfilling and then concrete is poured to fill the wet joint, and then curing and covering are performed, but only curing is required without removal of the form, and after the concrete reaches a predetermined strength, the soil is directly covered.

9. The method of manufacturing a ballistic layer of claim 7 further comprising a stitch-bonding wet-bond preform assembly method comprising:

10. The method for preparing the bullet-proof layer according to claim 7, wherein the prefabricated member is a quadrangular prism, the bullet-proof layer is assembled by fixing the reinforcement cage on the backing plate and then hoisting the prefabricated member, wherein the prefabricated member is a quadrangular prism, the side surface of the prefabricated member is provided with a lifting hook for convenient hoisting, the lifting hook protruding outwards of the prefabricated member is required to ensure that the prefabricated member can pass through the reinforcement cage,

and/or the number of the groups of groups,