Integrated preparation method of precast concrete protective layer and reinforcing cage

Abstract

This invention relates to the field of building construction technology and discloses an integrated preparation method for precast concrete protective layer and rebar cage. The key technical points include the following steps: S1, splicing rebar into a shape matching the style of the concrete component by fixed connection (welding or binding) to form a rebar cage; S2, pre-setting a mother plate, pouring concrete on the mother plate to form a layer, the mother plate 1 and the layer 2 combining to form a protective layer; S3, fixing and connecting several fasteners penetrating the layer 2; S4, determining the slotting position and shape according to the matching component detailed drawings; S5, opening several first through slots on the layer 2, the several first through slots dividing the layer 2 into segments, the number of segments of the layer 2 matching the number of sides of the rebar cage to be wrapped, and opening second through slots on the opposite side of the already slotted side of the layer 2, the number of second through slots matching the first through slots, and the position opposite to the first through slots.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically to a method for the integrated preparation of precast concrete protective layer and reinforcing cage. Background Technology

[0002] In the existing technology, most prefabricated components require the steel bars and concrete to be prefabricated together, but this process is time-consuming and very inconvenient to transport.

[0003] In existing technologies, there is a method of prefabricating a steel cage and then casting the four sides of the cage separately. Although this method reduces the consumption of time costs and transportation problems, the time cost is only alleviated to a certain extent when the four sides are cast separately, and the time consumption is not significantly reduced.

[0004] Cast-in-place reinforced concrete projects require extensive formwork, resulting in long construction periods, difficulty in controlling concrete pouring quality, and high construction costs. On the other hand, current prefabricated monolithic concrete projects can only reduce the use of local formwork; a large amount of on-site support and formwork is still required, and the quality of precast components is generally not high. Precast components are heavy, placing high demands on tower cranes and other equipment, and making installation difficult. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a method for the integrated preparation of precast concrete protective layer and steel cage.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for integrating precast concrete protective layer and reinforcing cage, comprising the following steps:

[0007] S1, the steel bars are spliced ​​together in a shape that matches the style of the concrete component by means of fixed connection (welding or binding) to form a steel cage;

[0008] S2, a pre-set base plate, concrete is poured on the base plate to form a layer, and the base plate and the layer are combined to form a protective layer;

[0009] S3, several fasteners that penetrate the layer are fixedly connected to the layer;

[0010] S4. Determine the location and shape of the slot based on the matching component detail drawings;

[0011] S5, several first through slots are opened on layer 2, and the several first through slots divide the layer into segments. The number of segments into which the layer is divided matches the number of sides of the steel cage to be wrapped. Second through slots are opened on the side of the layer opposite to the side that has been slotted. The number of second through slots matches the number of first through slots, and their positions are opposite to the first through slots.

[0012] S6, bring the layer close to the steel cage and fix it in place, bend the mother plate according to the positions of the second through groove and the first through groove to complete the enclosure of the side of the steel cage;

[0013] S7, fix the two ends of the enclosed motherboard in place;

[0014] S8, a connecting rod is passed between two fasteners that are in opposite positions, and the connecting rod is fixedly connected to the two fasteners 8.

[0015] As a further improvement of the present invention, the sub-step of S8 is to fix a connector to the side of the fastener close to the reinforcing cage 3, the connector being detachably connected to the reinforcing cage.

[0016] As a further improvement of the present invention, the sub-step of S2 is to pre-embed the mother plate in the layer body.

[0017] As a further improvement of the present invention, the two layers have the same thickness, and both are 15mm to 25mm thick.

[0018] As a further improvement of the present invention, when the protective layer 5 surrounding the reinforcing cage 3 needs to be folded into an external angle; the first through groove has a first shape, and the second through groove 12 has a second shape.

[0019] As a further improvement of the present invention, when the protective layer surrounding the reinforcing cage needs to be folded into an inside corner; the first through groove has a second shape, and the second through groove has a first shape.

[0020] As a further improvement of the present invention, the first shape is an isosceles triangle and the second shape is a rectangle.

[0021] As a further improvement of the present invention, the material of the layer is fiber-reinforced concrete.

[0022] As a further improvement of the present invention, the sub-step of S1 is that the steel cage is formed by stacking and fixing several steel bars longitudinally and laterally to form a grid-like steel mesh.

[0023] As a further improvement of the present invention, the depths of the second through groove and the first through groove are matched, and both are 15mm to 18mm.

[0024] As a further improvement of the present invention, when the protective layer surrounds the side of the reinforcing cage, the grooving process is not required, and the protective layer is no longer bent. In this case, the reinforcing cage is surrounded by at least two protective layers spliced ​​together, and the two adjacent protective layers are fixedly connected to each other.

[0025] A further sub-step of S3 involves pre-embedding fasteners on the layer, the hollow surfaces of which are threaded.

[0026] A further sub-step of S8 is that the connecting rod is a threaded rod that is threadedly connected to the fastener to form a tie bolt.

[0027] Furthermore, the fastener has a large-area gasket, and the reinforcing cage 3 can be fixedly welded to the gasket.

[0028] Furthermore, after the protective layer and the reinforcing cage are installed, holes are drilled in the protective layer 5 using an impact drill, and then fasteners are installed in the holes.

[0029] As a further improvement of the present invention, the sub-step of S2 is to pre-set a mother plate and pour concrete on one side of the mother plate to form a layer. At this time, the mother plate 1 is made of a highly ductile metal material and is a plate.

[0030] The sub-step of S4 is to open several first through slots on the layer. When bending, the first through slot is an isosceles triangle when a positive angle needs to be bent, and a rectangle when a negative angle needs to be bent.

[0031] As a further improvement of the present invention, a section of the layer near the edge of the mother plate is cut off by 1 mm to 2.5 mm, and then the exposed part of the mother plate is connected to the edge of the other side of the mother plate.

[0032] As a further improvement of the present invention, the mother plate 1 is pre-stamped with concave and convex surfaces (such as...). Figure 3 ).

[0033] Beneficial effects of the present invention

[0034] (1) The precast concrete protective layer and reinforcing cage integrated component of the present invention has low weight and is simpler to install than precast concrete components. It can be factory-produced and has high production efficiency. The precast concrete protective layer can be used as a formwork for the subsequent pouring of concrete, which greatly reduces the use of on-site formwork, realizes the formwork-free process, reduces construction costs, and greatly shortens the time for prefabrication in the factory. It is also more convenient to transport and avoids the problem of different shapes making transportation difficult. Installation is also simpler.

[0035] (2) This invention reserves a concrete protective layer of a certain thickness outside the steel cage to meet the durability requirements. Then, after the precast steel cage and the protective layer are connected to each other, a hollow self-balancing precast component is formed. It can be applied to structural components such as columns, beams, and shear walls. The core concrete of the structural component is poured into a whole at one time after the precast component is transported to the construction site and installed, which is more convenient and practical and achieves formwork-free operation.

[0036] (3) The present invention makes the steel cage into a mesh steel mesh, that is, the steel bars in both directions are arranged at a certain interval to form a mesh, and the protective layer and the position of the internal filling concrete form a shear key, which improves the stability. When the concrete is poured on site, the protective layer acts as a template, and the parts extending from the opposite sides of the steel mesh form tie bolts, which play a role in tying and supporting the protective layer, thus forming a self-balancing force system that meets the force requirements of the construction stage.

[0037] (4) The present invention forms concave and convex surfaces by stamping on the mother plate to ensure the connection between the protective layer and the mother plate, that is, the interlocking force is stronger and the overall strength is increased.

[0038] (5) The present invention utilizes the use of impact drills to drill holes in the protective layer to install threaded sleeves or pre-embed threaded sleeves, so that the screw can be connected with two of the threaded sleeves to form a transverse force. After the combined steel cage and the protective layer are penetrated by the screw, they form a tie bolt, thereby increasing the overall strength.

[0039] (6) The present invention facilitates the fixed connection with the reinforcing cage by adding a gasket to the threaded rod, and at the same time, it uses a hook on the threaded rod to achieve the connection between the threaded rod and the reinforcing cage, thus realizing the tight connection between the reinforcing cage and the precast protective layer. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the protective layer structure in a specific embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the protective layer structure in a specific embodiment two of the present invention;

[0042] Figure 3 This is a schematic diagram of the mother plate structure in a specific embodiment three of the present invention;

[0043] Figure 4 This is a schematic diagram of the state structure when the present invention is in use;

[0044] Figure 5 This is a schematic diagram of the state structure when folding internal and external corners during the use of this invention;

[0045] Figure 6 This is a schematic diagram of the structure of at least two protective layers spliced ​​together when the present invention is used;

[0046] Figure 7 This is a schematic diagram of the internal structure of the present invention;

[0047] Figure 8 This is a schematic diagram of all the angled structures used in this invention;

[0048] Figure 9 This is the present invention. Figure 7 A schematic diagram of the cross-sectional structure.

[0049] Reference numerals: 1. Mother plate; 11. First through groove; 12. Second through groove; 2. Layer; 3. Reinforcing cage; 5. Protective layer; 7. Connecting rod; 8. Fastener. Detailed Implementation

[0050] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0051] Specific Implementation Example 1, refer to Figure 1 , Figure 4-9 As shown, the integrated fabrication method of precast concrete protective layer and reinforcing cage in this embodiment includes the following steps:

[0052] S1, The steel bars are spliced ​​together in a shape that matches the style of the concrete component by means of fixed connection (welding or binding) to form a steel cage 3;

[0053] S2, a pre-set mother plate 1 is constructed, and concrete is poured on the mother plate 1 to form a layer 2. The mother plate 1 and the layer 2 are combined to form a protective layer 5.

[0054] S3, Several fasteners 8 that penetrate the layer 2 are fixedly connected to the layer 2;

[0055] S4. Determine the location and shape of the slot based on the matching component detail drawings;

[0056] S5, a number of first through slots 11 are opened on the layer 2, and the number of first through slots 11 divides the layer 2 into segments. The number of segments into which the layer 2 is divided matches the number of sides of the steel cage 3 to be wrapped. A second through slot 12 is opened on the side of the layer 2 opposite to the side that has been slotted. The number of second through slots 12 matches the number of first through slots 11, and the position is opposite to the first through slots 11.

[0057] S6, bring the layer 2 close to the steel cage 3 and fix it in place, and bend the mother plate 1 according to the positions of the second through groove 12 and the first through groove 11 to complete the enclosure of the side of the steel cage 3.

[0058] S7, fix the two ends of the enclosed mother plate 1 in place;

[0059] S8, pass a connecting rod 7 between two fasteners 8 that are in opposite positions, and fix the connecting rod 7 to the two fasteners 8.

[0060] As shown in the figure, the sub-step of S8 is to fix a connector to the side of the fastener 8 near the steel cage 3, and the connector is detachably connected to one of the steel bars of the steel cage 3.

[0061] As shown in the figure, the sub-step of S2 is to pre-embed the mother plate 1 in the layer 2.

[0062] As shown in the figure, the two layers 2 have the same thickness, and both are 15mm to 25mm thick.

[0063] like Figure 4-9 As shown, when the protective layer 5 surrounds the reinforcing cage 3 and needs to be folded into an external angle; the first through groove 11 has a first shape, and the second through groove 12 has a second shape.

[0064] like Figure 4-9 As shown, when the protective layer 5 surrounds the reinforcing cage 3 and needs to be folded into an inside corner; the first through groove 11 has a second shape, and the second through groove 12 has a first shape.

[0065] like Figure 4-9 As shown, the first shape is an isosceles triangle, and the second shape is a rectangle.

[0066] like Figure 4-9 As shown, the material of layer 2 is fiber-reinforced concrete.

[0067] like Figure 4-9 As shown, the sub-step of S1 is that the steel cage 3 is formed by stacking and fixing several steel bars longitudinally and laterally to form a grid-like steel mesh.

[0068] like Figure 4-9 As shown, the depths of the second through groove 12 and the first through groove 11 are matched, and both are 15mm to 18mm.

[0069] like Figure 4-9 As shown, when the protective layer 5 surrounds the side of the reinforcing cage 3, no grooving is required, and the protective layer 5 is no longer bent. At this time, the reinforcing cage 3 is surrounded by at least two protective layers 5 spliced ​​together, and the two adjacent protective layers 5 are fixedly connected to each other.

[0070] like Figure 4-9 As shown, the sub-step of S3 is to pre-embed fasteners 8 on the layer 2, the hollow surface of the fasteners 8 having threads.

[0071] like Figure 4-9 As shown, the sub-step of S8 is that the connecting rod 7 is a threaded rod that is threadedly connected to the fastener 8 to form a tie bolt.

[0072] like Figure 4-9 As shown, the fastener 8 has a large-area gasket, and the reinforcing cage 3 can be fixedly connected and welded to the gasket.

[0073] Working principle: such as Figure 1 , Figure 4-9 As shown, when using

[0074] S1, The steel bars are spliced ​​together by fixed connection welding or binding to form a shape that matches the style of the concrete component, forming a steel cage 3;

[0075] S2, a pre-set mother plate 1 is constructed, and concrete is poured on the mother plate 1 to form a layer 2. The mother plate 1 and the layer 2 are combined to form a protective layer 5.

[0076] S3, Several fasteners 8 that penetrate the layer 2 are fixedly connected to the layer 2;

[0077] S4. Determine the location and shape of the slot based on the matching component detail drawings;

[0078] S5, a number of first through slots 11 are opened on the layer 2, and the number of first through slots 11 divides the layer 2 into segments. The number of segments into which the layer 2 is divided matches the number of sides of the steel cage 3 to be wrapped. A second through slot 12 is opened on the side of the layer 2 opposite to the side that has been slotted. The number of second through slots 12 matches the number of first through slots 11, and the position is opposite to the first through slots 11.

[0079] S6, bring the layer 2 close to the steel cage 3 and fix it in place, and bend the mother plate 1 according to the positions of the second through groove 12 and the first through groove 11 to complete the enclosure of the side of the steel cage 3.

[0080] S7, fix the two ends of the enclosed mother plate 1 in place;

[0081] S8, pass a connecting rod 7 between two fasteners 8 that are in opposite positions, and fix the connecting rod 7 to the two fasteners 8.

[0082] Specific embodiment two, such as Figure 2 As shown, unlike the first specific embodiment, as a further improvement of the present invention, the sub-step of S2 is to pre-set a mother plate 1, and then pour concrete on one side of the mother plate 1 to form a layer 2. At this time, the mother plate 1 is made of a highly ductile metal material and is a sheet material. The sub-step of S4 is to open several first through grooves 11 on the layer 2. When bending, the first through groove 11 is an isosceles triangle when a positive angle is required, and a rectangle when a negative angle is required. A section of the layer 2 near the edge of the mother plate 1 is cut off by 1mm to 2.5mm, and then the exposed part of the mother plate 1 is connected to the other edge of the mother plate 1.

[0083] In a specific embodiment three, the mother plate 1 is pre-stamped with concave and convex surfaces (such as...). Figure 3 ).

[0084] Specific embodiment four, such as Figure 9 As shown in the figure, unlike the first specific embodiment, after the protective layer 5 and the reinforcing cage 3 are installed, holes are drilled in the protective layer 5 using an impact drill, and then fasteners 8 are installed in the holes.

[0085] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for integrating precast concrete protective layer and reinforcing cage, characterized in that: Includes the following steps: S1, the steel bars are spliced ​​together in a fixed connection to form a shape that matches the style of the concrete component, forming a steel cage (3); the steel cage (3) is formed by several steel bars stacked longitudinally and laterally and then fixedly connected to form a grid-like steel mesh; S2, a pre-set mother plate (1) is prepared, and concrete is poured on the mother plate (1) to form a layer (2). The mother plate (1) and the layer (2) are combined to form a protective layer (5). S3, fix several fasteners (8) that penetrate the layer (2) to the layer (2). S4. Determine the location and shape of the slot based on the matching component detail drawings; S5, several first through slots (11) are opened on the layer (2), and the several first through slots (11) divide the layer (2) into segments. The number of segments of the layer (2) is matched with the number of sides of the steel cage (3) to be wrapped. A second through slot (12) is opened on the side of the layer (2) opposite to the side with the slotted side. The number of second through slots (12) is matched with the first through slots (11), and the position is opposite to the first through slots (11). When the protective layer (5) needs to be folded into an external corner to surround the steel cage (3), the first through slot (11) and the shape are the first shape, and the second through slot (12) is the second shape. When the protective layer (5) needs to be folded into an internal corner to surround the steel cage (3), the shape of the first through slot (11) is the second shape, and the shape of the second through slot (12) is the first shape. S6, bring the layer (2) close to the steel cage (3) and fix it in place, bend the mother plate (1) according to the position of the second through groove (12) and the first through groove (11) to complete the enclosure of the side of the steel cage (3); S7, fix the two ends of the protective layer (5) of the surrounded mother plate (1) to the fixed connection; S8, pass a connecting rod (7) between two fasteners (8) that are in opposite positions, and fix the connecting rod (7) to the two fasteners (8) together; fix a connector to the side of the fastener (8) near the steel cage (3), the connector being detachably connected to the steel cage (3).

2. The method for integrating precast concrete protective layer and reinforcing cage according to claim 1, characterized in that: The sub-step of S2 is to pre-embed the mother plate (1) in the layer (2).

3. The method for integrating precast concrete protective layer and reinforcing cage according to claim 2, characterized in that: The two layers (2) have the same thickness, and both are 15mm to 25mm thick.

4. The method for integrating precast concrete protective layer and reinforcing cage according to claim 1, characterized in that: The material of the layer (2) is fiber-reinforced concrete.

5. The method for integrating precast concrete protective layer and reinforcing cage according to claim 1, characterized in that: The second through slot (12) and the first through slot (11) are depth matched.

6. The method for integrated preparation of precast concrete protective layer and reinforcing cage according to claim 1, characterized in that: When the protective layer (5) surrounds the side of the steel cage (3), no grooving is required, and the protective layer (5) is no longer bent. At this time, the steel cage (3) is surrounded by at least two protective layers (5) spliced ​​together, and the two adjacent protective layers (5) are fixedly connected to each other.

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