A concrete interception method and prefabricated concrete interception construction components

Abstract

This invention discloses a concrete interception method and prefabricated concrete interception construction components, including the following specific operation steps: S1. Select prefabricated barrier steel plates of different specifications, bottom-end round-headed cones, and horizontal fixing steel plates, and move them to the construction site; S2. After the beam reinforcement is tied and cleaned, select the stirrups at the designated position of the column node, place the horizontal fixing steel plate, and install the prefabricated barrier steel plates sequentially through the reinforcement spacing. The prefabricated barrier steel plates are connected by tongue and groove to form a whole; S3. Place the horizontal fixing steel plate as a base for placing the slotted fixing steel plate, and fix the end prefabricated barrier steel plates through the fixing steel plate slots; S4. Install the structure on the end prefabricated barrier steel plates; S5. Pour concrete in layers; S6. After the concrete is poured and formed, remove the barrier steel plates sequentially. This invention can strengthen the overall resistance to concrete impact, has better stability, and solves the problem of poor bottom sealing effect.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a concrete interception method and prefabricated concrete interception construction components. Background Technology

[0002] During the construction of a building, the load-bearing columns of a building may require higher strength concrete to bear larger vertical loads and provide overall stability, while floor slabs or beams may use lower strength concrete to save costs or reduce the structural weight.

[0003] However, when different strength grades of concrete need to be poured at beam-column joints, a technical challenge arises: how to effectively intercept low-strength concrete and prevent it from flowing into the high-strength concrete area, thus ensuring the strength and durability of the structure. Therefore, concrete interception technology is needed to construct beam-column joints in high-rise buildings and complex structural projects to meet different structural performance requirements and facilitate the use of different strength grades of concrete in different parts of the same building structure.

[0004] Existing technologies for effective concrete interception generally employ the following methods, but significant shortcomings remain in actual construction: (1) Using wire mesh and welded steel bar ends for interception: However, in actual construction, steel bar construction needs to be carried out simultaneously, which is difficult and affects the construction progress. At the same time, the turnover rate is low, and wire mesh construction is required, which is costly. It involves basement and other beam sections above 1m, and the interception effect is poor. Fixing the wire mesh requires the use of scrap steel bars for fixing. When fixing welded steel bars for interception, due to the uneven level of the workers, damage to the longitudinal reinforcing bars is inevitable, which poses a structural safety hazard. (2) Using the isolation airbag interception construction process: However, for beam sections with a height of more than 1m, the blocking effect is poor; due to the use of flexible blocking, the bottom of the long strip airbag is suspended, which is difficult to fix and the bottom is prone to deformation, resulting in poor sealing effect at the bottom opening; the airbag is easily damaged during construction, and the turnover rate is 2-3 standard layers; the air pressure is unstable, and it is necessary to maintain stable air pressure during construction. The site is affected by various external factors, which can easily lead to unstable air pressure and affect the blocking effect; (3) The construction process of one-click socket plate interception is required: on-site processing is required, which poses safety hazards; it is impossible to form a complete set of barrier devices for various specifications and cross sections, which requires on-site processing and manufacturing, resulting in problems such as high difficulty, large workload, and high labor consumption, resulting in low turnover rate; for nodes with large cross sections, since the interception components are long steel bars, they are too long and cantilevered, resulting in large deformation. At the same time, after the concrete is poured, the wire mesh, steel bars and concrete form a bond force, which is difficult to remove in time, causing difficulties and inconvenience for workers.

[0005] Meanwhile, the existing technologies mentioned above lack methods for intercepting the protective layer during construction, which can easily lead to the mixing of concrete of different strength grades during concrete pouring, affecting the overall performance of the structure and causing a significant impact on the building as a whole.

[0006] Therefore, this application proposes a concrete interception method and a prefabricated concrete interception construction component to solve the above-mentioned technical problems. Summary of the Invention

[0007] The main objective of this invention is to provide a concrete interception method and a prefabricated concrete interception construction component, which has strong blocking performance of steel bar gaps, good blocking of concrete side protective layer, strong overall stability of interception construction process, and strong resistance to deformation of blocking materials, resulting in high quality concrete interception.

[0008] The present invention solves the above-mentioned technical problems by adopting the following technical solutions: A concrete interception method includes the following specific operational steps: S1. Select different specifications of assembly barrier steel plates, bottom round-headed cones, and horizontal fixing steel plates according to the spacing of the reinforcing bars, and move them to the construction site; S2. After the beam reinforcement is tied and cleaned, select the stirrups at the designated position of the column node, place the horizontal fixing steel plate, and install the assembly barrier steel plate through the reinforcement spacing in sequence. The assembly barrier steel plate is connected by tongue and groove to form a whole. The assembly barrier steel plate includes two sets of end assembly barrier steel plates and at least one set of middle assembly barrier steel plates. During the installation process, the end assembly barrier steel plates are installed first, and then the middle assembly barrier steel plates are installed. S3. Place a horizontal fixed steel plate as a base, the middle assembly blocking steel plate passes through the middle slide groove of the base, place a slot to fix the steel plate, and the end assembly blocking steel plate is fixed by the fixed steel plate slot. S4. Install the structure on the end assembly barrier steel plate; S5. Concrete is poured in layers; Prioritize the construction of walls, columns, and joint areas, pouring concrete up to the top of the beams; S6. After the concrete is poured and formed, remove the barrier steel plates one by one; S7. Follow the steps S1-S6 above to operate on other parts and nodes in sequence.

[0009] Preferably, in step S3, a slotted fixing steel plate is placed on the barrier steel plate of the middle assembly for reinforcement.

[0010] Preferably, in step S6, when removing the barrier steel plates, the removal order is "removing the first installed plates last and removing the last installed plates first". The fixing steel plates are removed in sequence. The middle assembly barrier steel plates are rotated synchronously until they are parallel to the longitudinal reinforcement direction, and then removed from the structure. After the middle assembly barrier steel plates are removed, the end assembly barrier steel plates are rotated in sequence until they are parallel to the longitudinal reinforcement direction, and then removed from the structure.

[0011] Preferably, the end assembly barrier steel plate adopts an H-shaped double-layer steel plate configuration, the middle assembly barrier steel plate adopts a Z-shaped steel plate configuration, the middle assembly barrier steel plates are interlocked by tongue and groove joints, and the end assembly barrier steel plate is fixed to the middle assembly barrier steel plate by the end U-shaped groove.

[0012] Preferably, the end assembly has a groove at the end of the barrier steel plate near the protective layer, and a safety airbag is provided in the groove as a flexible device or an arc-shaped spring plate as a rigid device.

[0013] Preferably, the structure is configured as a flexible airbag or a rigid arc-shaped spring plate mounted on the end assembly barrier steel plate.

[0014] Preferably, both the end assembly barrier steel plate and the middle assembly barrier steel plate are provided with bottom opening interceptors for inserting into the gaps between longitudinal reinforcing bars. The bottom opening interceptors are fixed to the front side of the reinforcing bar stirrups and are connected to the assembly barrier steel plate by threads to adjust the barrier height of the assembly barrier steel plate up and down.

[0015] Preferably, the bottom interceptor is configured as multiple sets of conical structures, telescopic arm-connected semicircular plate structures, or semi-arc plate combination structures located at the bottom of the assembly's barrier steel plate. The conical structures and semi-arc plate combination structures are engaged with the reinforcing bars through threaded connections, and the telescopic arm-connected semicircular plate structure is engaged with the reinforcing bars through telescopic arms.

[0016] A prefabricated concrete interception construction component, used in any of the concrete interception methods described above, comprising: The assembly barrier steel plate is located at the beam-column joint. The assembly barrier steel plate consists of at least two sets of Z-shaped assembly fixing steel plates that overlap and cooperate with each other, and H-shaped assembly fixing steel plates located at both ends for connecting the Z-shaped assembly fixing steel plates. A horizontally fixed steel plate base is connected to the assembly barrier steel plate, and the horizontally fixed steel plate base is connected to and positioned by two sets of H-shaped assembly fixed steel plates through two sets of shaped slots, which are used to constrain the displacement and movement of the assembly barrier steel plate.

[0017] Preferably, the H-shaped assembly has multiple sets of connecting grooves on one side of the fixing steel plate, and the connecting grooves are provided with a shrinkage blocking plate to prevent the concrete from slipping along the side joint.

[0018] Preferably, the bottom of the barrier steel plate of the assembly is provided with a bottom opening interceptor to enhance the bottom opening sealing effect.

[0019] This invention provides a concrete interception method and a prefabricated concrete interception construction component. Compared with the prior art, the advantages of this invention are as follows: 1. The prefabricated steel plate structure of this invention is fixed with a top slotted fixing plate, a tongue-and-groove fixing of the middle prefabricated steel plate, and a bottom interceptor inserted into the gap between the longitudinal reinforcing bars. Simultaneously, it is fixed to the front side of the stirrups at the rear end, strengthening the overall resistance to concrete impact and providing better stability while solving the problem of poor bottom sealing effect. Furthermore, because the bottom interceptor and the prefabricated steel plate are threadedly connected, the blocking height of the prefabricated steel plate can be adjusted vertically. By using different bottom interceptors, it can adapt to various reinforcing bar spacings and situations where spacing is too small due to varying worker skill levels, thus improving the quality of concrete interception. It is also more versatile for complex reinforced concrete structures.

[0020] 2. By adopting an H-shaped double-layer steel plate structure at the ends, the central assembly blocking steel plate can be fixed through the U-shaped groove at the ends. At the same time, a groove is left near the end of the protective layer to place a safety airbag as a flexible device or an arc-shaped spring plate as a rigid device. This solves the problem that the protective layer area cannot be blocked due to longitudinal steel bars and small spacing of the protective layer in steel reinforcement engineering, and avoids concrete slippage on the side.

[0021] 3. The barrier plate structure of this invention adopts a Z-shaped overlap in the middle, which increases the path that concrete needs to pass through when it flows into the joint, and can better block the concrete. It ensures that each section has at least two layers of steel plates to block it. At the same time, the tongue and groove interlocking enhances the overall stability. The horizontal spacing of the barrier steel plates can be adjusted by the grooves formed between the steel plates, so as to achieve high adaptability and multi-specification versatility.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a flowchart illustrating the operation process of the present invention at a specified node. Figure 2This is a three-dimensional schematic diagram of the overall structure of the component of the present invention; Figure 3 This is a schematic plan view of the overall structure of the horizontally fixed steel plate of the present invention; Figure 4 This is a schematic plan view of the overall structure of the slot fixing steel plate of the present invention; Figure 5 This is a three-dimensional schematic diagram of the overall structure of the steel plate fixing the H-shaped assembly of the present invention; Figure 6 This is a schematic diagram of the bottom plane of the steel plate fixing the H-shaped assembly of the present invention; Figure 7 This is a three-dimensional schematic diagram of the overall structure of the Z-shaped assembly fixing steel plate of the present invention; Figure 8 This is a schematic diagram of the bottom plane of the steel plate fixing the Z-shaped assembly of the present invention; Figure 9 This is a side view of the inverted cone structure of the present invention; Figure 10 This is a three-dimensional schematic diagram of the overall structure of the steel plate shrinkage blocking sheet of the present invention; Figure 11 This is a planar schematic diagram of the combined structure of the semi-circular plate and the semi-arc plate of the present invention. Figure 1 ; Figure 12 This is a planar schematic diagram of the combined structure of the semi-circular plate and the semi-arc plate of the present invention. Figure 2 .

[0024] In the picture: 1. Horizontal fixed steel plate base; 11. Horizontal slot; 12. Fixed movable slot; 2. Fixed steel plate with shaped slot; 21. Through slot; 3. H-shaped assembly fixing steel plate; 31. H-shaped double-layer steel plate; 32. U-shaped groove; 33. Handle; 34. Steel frame; 35. Bottom threaded groove; 36. Connecting groove; 4. Z-shaped assembly fixing steel plate; 41. Z-shaped steel plate; 42. Handle two; 43. Steel frame two; 44. Bottom opening threaded groove two; 5. Bottom opening interceptor; 51. Inverted conical structure; 511. Cylindrical connector; 512. External thread; 513. Inverted conical shape; 514. Rounded bottom; 6. Shrinkage blocking plate; 61. Arc-shaped blocking plate; 62. Telescopic spring. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] For details in the embodiments, please refer to Figures 1 to 12 .

[0027] This invention provides a concrete interception method and a prefabricated concrete interception construction component applicable to the concrete interception method.

[0028] like Figure 1 As shown, the concrete interception method specifically includes the following operational steps: S1. The processing plant manufactures various specifications of assembly barrier steel plates, bottom-rounded cones, and horizontal fixing steel plates. Based on the drawings and the specific situation of the steel bar spacing on site, the plant conducts comprehensive analysis and layout, plans specific specifications of assembly barrier steel plates, bottom-rounded cones, and horizontal fixing steel plates, and assembles and fixes individual assembly barrier steel plates in advance according to the plan to meet the on-site construction needs, and transports them to the on-site construction site. Among them, the end assembly barrier steel plate adopts an H-shaped double-layer steel plate structure, the middle assembly barrier steel plate adopts a Z-shaped steel plate structure, the middle assembly barrier steel plates are interlocked by tongue and groove, and the end assembly barrier steel plate is fixed to the middle assembly barrier steel plate by the end U-shaped groove. The end assembly has a groove near the protective layer on the barrier steel plate. An airbag is installed in the groove as a flexible device or an arc spring plate as a rigid device. S2. After the beam reinforcement is tied and cleaned, select the stirrups at the distance from the column node according to the design node. According to the removal sequence, first install the end assembly barrier steel plate, and then install the middle assembly barrier steel plate through the reinforcement spacing. The assembly steel plate is fixed at the bottom through the tongue and groove to form a whole. Both the end assembly barrier steel plate and the middle assembly barrier steel plate are equipped with bottom interceptors for inserting into the gaps between longitudinal reinforcing bars. The bottom interceptors are fixed in front of the reinforcing bar stirrups and are connected to the assembly barrier steel plate by threads to adjust the barrier height of the assembly barrier steel plate up and down. The bottom interceptor is configured as multiple sets of conical structures located at the bottom of the card slot fixing steel plate (or as follows). Figure 12 The telescopic arm is connected to a semi-circular plate structure and a semi-arc plate combination structure. At this time, the telescopic arm can also be used as... Figure 11The diagram shows a modified telescopic control spring), a conical structure (or a semi-circular plate combination structure) that engages with the reinforcing steel through a threaded connection structure (the telescopic arm connecting the semi-circular plate structure engages with the reinforcing steel through a telescopic arm). The assembly barrier steel plate includes two sets of end assembly barrier steel plates and at least one set of middle assembly barrier steel plates; By adjusting the overlap distance of the barrier steel plates and adjusting the horizontal dimensions, the cone structure at the bottom of the barrier steel plate of the middle assembly is adjusted in advance according to the drawings and the actual site conditions before placement and installation. The dimensions of the horizontal and vertical steel plates are selected according to the drawings and the actual site conditions. S3. Place a horizontal fixed steel plate as a base, the middle assembly blocking steel plate passes through the middle slide groove of the base to place the slot fixing steel plate, and the end assembly blocking steel plate is fixed by the fixed steel plate slot. The middle assembly has a steel plate with a slotted fixing plate for reinforcement. S4. Install the structure on the end assembly barrier steel plate; The structure is configured as a flexible airbag or a rigid arc spring plate mounted on the end assembly barrier steel plate; S5. Concrete is poured in layers; Prioritize the construction of walls, columns, and joint areas, pouring concrete up to the top of the beams; S6. After the concrete is poured and formed, remove the barrier steel plates one by one; When removing the barrier steel plates, follow the removal sequence of "removing the first installed plates last and removing the last installed plates first". Remove the fixed steel plates one by one. When the barrier steel plates of the middle assembly are rotated synchronously until they are parallel to the longitudinal reinforcement, remove them from the structure. After the barrier steel plates of the middle assembly are removed, rotate the barrier steel plates of the end assemblies one by one until they are parallel to the longitudinal reinforcement, and remove them from the structure. S7. Follow the steps S1-S6 above to operate on other parts and nodes in sequence; S8. Continue in this manner, working on each part and node in sequence.

[0029] Combining the above concrete interception methods, the prefabricated concrete interception construction components used, such as... Figure 2 As shown, it specifically includes: The assembly barrier steel plate is located at the beam-column joint. The assembly barrier steel plate consists of at least two sets of Z-shaped assembly fixing steel plates 4 that overlap and cooperate with each other, and H-shaped assembly fixing steel plates 3 (end assembly barrier steel plates in the above method) located at both ends for connecting the Z-shaped assembly fixing steel plates 4 (middle assembly barrier steel plates in the above method). The horizontal fixed steel plate base 1 is connected to the assembly barrier steel plate, and the horizontal fixed steel plate base 1 is connected to and positioned by two sets of H-shaped assembly fixed steel plates 3 through two sets of fixed steel plates 2, which are used to constrain the displacement and movement of the assembly barrier steel plates.

[0030] in: (1) such as Figure 2 , Figure 3 and Figure 4 As shown, a horizontal slot 11 is provided in the middle of the horizontal fixed steel plate base 1, and a shaping movable slot 12 is provided at both ends of the horizontal slot 11 on the horizontal fixed steel plate base 1. The shaping movable slot 12 is used to fix the steel plate 2 to move movably. The fixed steel plate 2 has a through slot 21 in the middle, which is used to install and fix the barrier steel plate of the assembly.

[0031] (2) such as Figure 5 and Figure 6 As shown, the H-shaped assembly fixing steel plate 3 is configured as an H-shaped double-layer steel plate 31 structure; Multiple sets of U-shaped grooves 32 are respectively opened on one side of the H-shaped double-layer steel plate 31 structure for engaging and connecting with the Z-shaped assembly fixing steel plate 4. On the other side of the H-shaped double-layer steel plate 31 structure, multiple sets of connecting grooves 36 are respectively opened, and structural bodies are installed in the connecting grooves 36. The connecting groove 36 is close to the protective layer, and the structure generally adopts two solutions to prevent concrete side slippage: flexible sealing and rigid anti-seal. For flexible sealing, the groove is equipped with ring hoops at the top, middle, and bottom layers to fix flexible airbags. The flexible airbags and steel plates form a whole and can be placed at the bottom. Inflation achieves the sealing effect on the protective layer. For rigid sealing, the ends are equipped with shrinkage-blocking steel plates 6 and other freely shrinking rigid devices to solve the problem of insufficient protection in the protective layer area due to longitudinal rebar obstruction and small protective layer spacing. The adjustable function of the assembly improves its adaptability, enhances its versatility, and increases turnover rate. A steel frame 34 is installed through the middle of the H-shaped double-layer steel plate 31 structure. A handle 33 is provided at the upper end of the steel frame 34 for passing through the through slot 21 of the steel plate 2 to fix it. The bottom of the H-shaped double-layer steel plate 31 structure is provided with a bottom threaded groove 35 for setting the bottom interceptor 5 (the bottom interceptor in the above method) to enhance the bottom sealing effect.

[0032] Therefore, by adopting the H-shaped double-layer steel plate configuration at the ends, the middle assembly barrier steel plate can be fixed through the U-shaped groove at the ends. At the same time, a groove is left near the end of the protective layer to place a safety airbag (the flexible safety airbag in the above method) as a flexible device or a barrier steel plate shrinkage blocking plate 6 (the arc-shaped spring plate in the above method) as a rigid device. This solves the problem that the protective layer area cannot be blocked due to longitudinal steel bar obstruction and small protective layer spacing, and avoids concrete side slippage.

[0033] (3) such as Figure 7 and Figure 8 As shown, the Z-shaped assembly fixing steel plate 4 is configured as a Z-shaped steel plate 41 structure, and the two ends of the Z-shaped steel plate 41 are respectively connected to the adjacent Z-shaped steel plate 41 by tongue and groove joint. The barrier plate structure adopts a Z-shaped overlap in the middle, which increases the path that concrete needs to pass through when it flows into the joint, thus better blocking the concrete and ensuring that each section has at least two layers of steel plates to block it. At the same time, the tongue and groove interlocking enhances the overall stability. The horizontal spacing of the barrier steel plates can be adjusted by the grooves formed between the steel plates, achieving high adaptability and multi-specification versatility.

[0034] A steel frame 2 43 is installed through the middle of the Z-shaped steel plate 41. A handle 2 42 is provided at the upper end of the steel frame 2 43 for passing through the horizontal slot 11 of the horizontally fixed steel plate base 1. The bottom of the Z-shaped steel plate 41 structure is provided with a bottom threaded groove 44 for setting the bottom interceptor 5 (the bottom interceptor in the above method) to enhance the bottom sealing effect. It should be noted that one end of the Z-shaped steel plate 41 is also engaged with the U-shaped groove 32 to form a whole.

[0035] Therefore, this overlapping method increases the path that concrete needs to pass through when flowing into the joint, solving the problem of poor joints in traditional processes and better blocking concrete. By overlapping adjacent steel plates, it is ensured that each section has at least two layers of steel plates to block the concrete, improving the strength of the steel plates. The interlocking of adjacent steel plates through tongue and groove restrains the deformation of the steel plates after impact, enhancing overall stability and impact resistance. The overlapping of adjacent steel plates allows for free adjustment of the horizontal spacing through the slots, adapting to various beam cross-sectional dimensions and rebar spacing conditions, achieving high adaptability and versatility.

[0036] In summary, the prefabricated barrier steel plate structure is fixed with a top slot fixing plate and a tongue and groove fixing plate in the middle. The bottom of the prefabricated barrier steel plate is equipped with a bottom interceptor 5 that is inserted into the gap of the longitudinal steel bars. At the same time, it is fixed to the front side of the stirrup at the rear end to enhance the overall resistance to concrete impact, achieve better stability, and solve the problem of poor bottom sealing effect.

[0037] Meanwhile, the prefabricated barrier steel plate structure adopts the prefabricated principle, which is to assemble and splice small parts into a whole. It is lightweight and convenient, and the construction operation is simple and convenient. It is suitable for multiple specifications of cross sections and has strong adaptability. Compared with the traditional process, it has problems such as the inability to form a whole, the inability to freely disassemble and assemble, poor integrity, poor resistance to deformation, and poor joints. By utilizing the high strength, light weight, and high degree of standardization of steel structure, it can effectively form a stable and tight whole of various parts, avoid the occurrence of gaps, improve the overall resistance to deformation, and improve the construction convenience and turnover rate by freely assembling and disassembling.

[0038] In one specific embodiment, such as Figure 2 and Figure 9 As shown, the bottom interceptor 5 adopts an inverted cone structure 51 (the cone structure in the above method). The inverted cone structure 51 can better utilize the gap between the reinforcing bars to pass through the gap between the longitudinal reinforcing bars at the bottom opening. The cone head can be placed on the upper part of the bottom formwork and fixed with the existing reinforcing bars, solving the problem that the sealing device of the traditional process cannot reach the bottom of the beam section and the bottom of the large section beam section is unstable.

[0039] The inverted cone structure 51 includes a cylindrical connector 511, an inverted cone 513, and a rounded bottom 514 connected in sequence. The cylindrical connector 511 is provided with an external thread 512 for connecting to the bottom threaded groove 35 or the bottom threaded groove 44.

[0040] The inverted cone-shaped 513 can effectively prevent the bottom concrete from slipping through the bottom steel bar spacing, and the assembled barrier steel plate can effectively increase the seepage path of the middle concrete and effectively block the middle concrete from slipping through the middle concrete joint. By combining the two components, a sealing effect that a single structure cannot achieve can be achieved, and it can solve the concrete sealing problem at the bottom and middle of the most critical parts of the concrete. The combination of the 513 inverted conical body with its freely adjustable height and the horizontally adjustable length of the assembly's barrier steel plate allows for adjustments that cannot be achieved with a single combination, making it more suitable for practical engineering projects with multiple cross-sections and specifications. The bottom inverted cone shape 513 is fixed to the bottom reinforcement bar, and together with the self-locking of the middle and top of the barrier steel plate, it improves the overall stability and strength of the barrier steel plate.

[0041] Therefore, the blocking height of the assembly's blocking steel plate can be adjusted up and down. At the same time, by using different bottom intercepting parts, it can adapt to various situations such as the spacing of the reinforcing bars and the spacing being too small due to the uneven skills of the workers, thereby improving the quality of concrete interception. It is more versatile for complex reinforcing steel structure projects.

[0042] In one specific embodiment, such as Figure 2 and Figure 10As shown, the steel plate shrinkage blocking plate 6 consists of a telescopic spring 62 fixed at one end in the connecting groove 36 and an arc-shaped blocking plate 61 located at the other end of the telescopic spring 62.

[0043] Single barrier steel plates are limited by the steel reinforcement structure, and traditional barrier methods cannot achieve sealing in the protective layer area. There is a problem of concrete slippage at the 25-50mm gap between the steel plate and the side formwork. The solution is to combine the end expansion and contraction blocking plates with the main barrier steel plate. The end double-layer barrier steel plate is equipped with slots to place the expansion and contraction blocking plates. The arc-shaped barrier blocking plates retract into the barrier steel plate after encountering the structural steel reinforcement, and extend out of the steel plate when they are in the gap, thus effectively blocking the concrete in the protective layer.

[0044] Furthermore, it should be noted that a single airbag cannot be used to seal overly narrow or elongated areas, and a single steel plate cannot adapt to small spacing and various protective layer spacing situations (due to inconsistent construction quality among workers and varying protective layer control). Therefore, an "H"-shaped steel plate can be used to place the airbag at the end, and the airbag can be fixed by three rings at the top, middle, and bottom. The airbag can extend into the bottom of the concrete along with the barrier steel plate. Before the concrete is poured, it can be inflated by mechanical automation, causing the airbag to expand and extend beyond the outer edge of the steel plate, filling the protective layer area and achieving an effective sealing effect.

[0045] In summary, the top of this structure is fixed with a top slotted fixing plate, the middle is fixed with a tongue-and-groove joint, and the bottom is fixed with the reinforcing bars and formwork. The two ends use "H"-shaped double-layer steel plates to fix the middle steel plate through grooves. Through various simplified fixing and interlocking methods, the integrity of the barrier steel plate is improved, the steel plate's resistance to deformation and concrete impact is strengthened, and better stability is achieved. This solves the problems of poor concrete barrier quality caused by poor blocking of reinforcing bar gaps, poor blocking of concrete side protective layers, poor overall stability of the interception construction process, and deformation of the barrier material, thereby improving the interception quality of high and low grade concrete.

[0046] In another specific embodiment, the structure of horizontal fixed steel plate + slot fixed steel plate + central area “Z” shaped barrier steel plate + end “H” shaped double-layer steel plate adopts materials such as aluminum alloy steel plate to reduce the self-weight of the structure, making it lightweight, convenient, and easy to construct.

[0047] Finally, it's important to add that for practical applications in complex steel reinforcement engineering projects: (1) In view of the complex situation of multiple rows of steel bars being staggered and parallel, structural bars, stirrups being denser, and steel bars being large in actual on-site steel reinforcement engineering, existing technologies, whether using a single flexible measure or a combination of rigid and flexible measures, cannot place the barrier through the complex steel bars at the bottom of the structure, or the restricted section is too large, causing the barrier to deform too much and not be able to be positioned well. This technical solution designs a "Z" and "H" shaped thin steel plate strip-assembled interceptor plate. The small unit steel plates can pass through the gaps between the reinforcing bars at any angle and direction. At the same time, it is combined with the lap connection of the middle steel plate and the tongue and groove plug at the end to adapt to complex reinforcing bar spacing. It allows for adjustment of any angle and any spacing. The "Z" and "H" shaped thin steel plate structure is self-locking through riveting to achieve full-length rigid fixation to form an interceptor whole. This overcomes the limitations of the existing technology of flexible combination and single-part fixation with existing structures, ensuring that the barrier can be placed at the bottom of the structure (especially for cross-sections with a height greater than 1m). The overall rigidity and stability of the structure are improved compared with single flexible or rigid-flexible combinations. (2) Due to limitations in the arrangement of reinforcing bars and the large cross-sectional dimensions, existing concrete interception measures cannot effectively intercept the gaps between the bottom reinforcing bars. This technical solution designs a combination of a round-headed conical body and a telescopic arm connecting a semi-circular or semi-arc plate. The lower part of the "Z"-shaped steel plate is connected to the semi-circular (semi-arc) steel plate via a telescopic arm, which automatically extends and interlocks with the reinforcing bars. The non-connected area of ​​the "H"-shaped double-layer steel plate is equipped with a track. The telescopic steel plate can freely extend into the bottom opening of the structure in sections according to needs via the track. The "Z" and "H" shaped steel plates are integrated with the round-headed conical body through a threaded structure. The round-headed conical body can be freely adjusted up and down as needed, serving to position the bottom opening and fix it to the structure. At the same time, it can better pass through the gaps between the reinforcing bars and interlock with them. Through the combination of the central round-headed conical body and the telescopic arm connecting the semi-circular (semi-arc) steel plate at the parallel part of the steel plate, the reinforcing bars are interlocked along the entire length. The selection of semi-circular or semi-arc telescopic connecting steel plates based on the actual site conditions can meet various reinforcing bar spacing requirements. (3) Existing technology is limited by the small gap between concrete protective layers and the varying skill levels of workers. When encountering cross-sections with special heights, existing technology cannot achieve a good interception effect. This technical solution designs a U-shaped groove at the end of an H-shaped steel plate near the protective layer area, with two options: rigid and flexible. The rigid option involves installing a free-expansion spring 62 and an arc-shaped barrier plate 61 inside the groove at the end of the H-shaped steel plate, which effectively blocks the area without reinforcement through free expansion and contraction. The flexible option involves installing three ring hoops at the opening of the H-shaped steel plate groove, and placing water bags and air bags in separate units (the entire length is connected by a pre-reserved iron pipe passing through a pre-reserved hole in the groove to form a connecting cavity). When placed, the structure contracts; when in operation, the structure expands, sealing the protective layer of the structure in separate units. (4) In actual field conditions, concrete impact loads are large (especially the height of the poured concrete) and the impact force of vibrating concrete is large. The existing technology for fixing the barrier is to use the method of binding it to the original structure and formwork on site. Due to the lack of bottom fixing, the barrier is easily subjected to large impacts, which can easily lead to large deformation (especially the bottom structure), air leakage, and slippage. This technical solution adopts a rigid connection method with all steel units. The fixing method achieves full-length mutual anchoring through the "H" and "Z" self-locking functions of the structure. The bottom opening uses the friction of the expansion teeth to engage with the bottom reinforcement. The circular cone at the bottom opening extends into the bottom opening of the template through the gap between the reinforcement. The horizontal steel plate at the top has a racetrack-shaped groove and is fixed by riveting with the racetrack-shaped handle of the barrier steel plate. The barrier plate is fixed in a way that achieves full-length, all-round fixing. The bottom and bottom opening reinforcement are completely engaged and fixed, which improves the overall stability and rigidity. The steel thin plate rigid connection method increases the seepage path and further solves the problem of slippage. (5) Existing practical interception technologies mainly use steel wire mesh, steel plate mesh and airbags alone or in combination. They are not highly adaptable and versatile. For special cross-sections and large cross-sections, the turnover rate is low and the cost is wasted (one-time). The installation and dismantling work is huge, which causes great trouble to the actual construction. The components of this technical solution can be freely combined in height, width, and all angle directions to form a simple and quick all-steel unit for assembly and disassembly. The unit of the barrier steel plate is riveted together in the height direction through the support body in a racetrack shape, and the spacing is freely adjusted in the horizontal direction through the "Z" and "H" steel plate tongue and groove fixing. According to the actual reinforcement layout on site, the arrangement and selection of the unit in the height and horizontal directions of the combined steel plate can be freely adjusted. Since the unit is freely assembled through the structure itself and through simple riveting and tongue and groove fixing, the construction can achieve the fastest installation and disassembly to the greatest extent. (6) For high-strength concrete (C50 and above), the concrete sets quickly, and the concrete pouring time varies due to special environmental conditions (weather, transportation, material supply). In order to avoid quality problems such as cold joints in the concrete, the barrier steel plate needs to be removed as soon as possible before the initial setting. The existing interception technology adopts a flexible unit and a combination of rigid and flexible. The flexible unit is easy to stick to the viscous concrete and cannot be separated quickly, which makes it difficult to achieve quick dismantling and causes trouble for on-site construction. This technical solution uses all-steel units that can be freely assembled and combined into small units. The steel plate surface is flat and smooth, and it can be quickly disassembled. In special cases where continuous pouring is required, the small unit assembly can also be freely arranged in two oblique "V" shapes. Simply insert the racetrack-shaped handle steel frame into the structure (the bottom opening is fixed by a round-headed cone), and the steel plate small units can be freely disassembled into the frame. The lower section of the first section is assembled, and the upper section of the second section is assembled. The first and second sections of the barrier steel plates are removed in batches and processes. (7) The on-site structural design is special and there are often differences in elevation. Due to the small size of the difference in elevation, sparse reinforcement, limited fixed support, and difficulty in blocking, the existing interception technology does not involve the technology of blocking concrete in this part. High-grade concrete flows out through the low point and pours all the low-elevation position (where the concrete is of low grade) into high grade, resulting in concrete waste. This technical solution uses all-steel units assembled from small steel structures, with self-locking and horizontally fixed steel plates for fastening. This method has low dependence on structural fixation and can seal and fix the part by assembling small-sized "Z" and "H" steel plates, reducing unnecessary concrete waste. (8) In some projects or special circumstances, it is necessary to pour grout (generally C60 or above). Because the grout is thin, sets quickly, and gains strength quickly, existing technologies cannot effectively intercept and quickly remove it, which can easily lead to cross-linking. The technical solution is designed with "Z" and "H" steel plates spliced ​​together. After assembly, the seepage path is "Z" shaped, which increases the seepage path and can effectively prevent the grout material from crossing the joints. This application can be promoted for the casting of various special materials. (9) Due to structural design factors, some beams and columns are designed as irregular shapes, with haunches, or inclined beams. If the inclined section (trapezoidal) is arranged according to the design blocking requirements, the dimensions of the blocking device are inconsistent (very regular shape). Existing blocking technologies all adopt conventional rectangular blocking methods. On-site blocking cannot meet the design requirements and can only be vertical (which is prone to vertical cold joints, causing vertical breakage of the beam). This technical solution is designed with a small unit assembly method, a bottom steel plate extension arm connected to a semi-arc plate, and the steel plate can be freely assembled into the required unit shape according to the cross-sectional shape. The bottom opening and ends are avoided and contracted by the free expansion and contraction of the steel plate and the structure. If necessary, wedge-shaped or other special-shaped steel plates are selected for assembly at the ends, which can highly adapt to various structural cross-sectional dimensions.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0049] Furthermore, it should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of the present invention, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, in the embodiments of this invention, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A method for intercepting concrete, characterized in that, The specific operating steps include the following: S1. Select different specifications of assembly barrier steel plates, bottom interceptors, and horizontal fixing steel plates according to the spacing of the reinforcing bars, and move them to the construction site. The bottom interceptors are set as bottom round-headed cones. S2. After the beam reinforcement is tied and cleaned, select the stirrups at the designated position of the column node, place the horizontal fixing steel plate, and install the assembly barrier steel plate through the reinforcement spacing in sequence. The assembly barrier steel plate includes two sets of end assembly barrier steel plates and at least one set of middle assembly barrier steel plates. During the installation process, the end assembly barrier steel plates are installed first, and then the middle assembly barrier steel plates are installed. S3. Place a horizontal fixed steel plate as a base, the middle assembly blocking steel plate passes through the middle slide groove of the base, place a shaped card slot to fix the steel plate, and the end assembly blocking steel plate is fixed by the card slot of the shaped card slot. S4. Install the structure on the end assembly barrier steel plate; S5. Concrete is poured in layers; Prioritize the construction of walls, columns, and joint areas, pouring concrete up to the top of the beams; S6. After the concrete is poured and formed, remove the steel plates separating the assembly in sequence; S7. Follow the steps S1-S6 above to operate on other parts and nodes in sequence; The end assembly barrier steel plate adopts an H-shaped double-layer steel plate structure, the middle assembly barrier steel plate adopts a Z-shaped steel plate structure, the middle assembly barrier steel plates are interlocked by tongue and groove, and the end assembly barrier steel plate is fixed to the middle assembly barrier steel plate by the end U-shaped groove. The structure is configured as a flexible safety airbag or a rigid arc spring plate mounted on the barrier steel plate of the end assembly.

2. The concrete interception method as described in claim 1, characterized in that, In step S6, when removing the assembly barrier steel plates, the removal order is "removing the first installed plates last and removing the last installed plates first". The fixing steel plates are removed one by one. After the middle assembly barrier steel plates are removed, the end assembly barrier steel plates are rotated one by one until they are parallel to the longitudinal reinforcement direction and then removed from the structure.

3. The concrete interception method as described in claim 1, characterized in that, The end assembly has a connecting groove at the end of the barrier steel plate near the protective layer. The connecting groove is equipped with a safety airbag as a flexible device or an arc-shaped spring plate as a rigid device.

4. The concrete interception method as described in claim 1, characterized in that, Both the end assembly barrier steel plate and the middle assembly barrier steel plate are provided with bottom opening interceptors for inserting into the gaps between longitudinal reinforcing bars. The bottom opening interceptors are fixed to the front side of the reinforcing bar stirrups and are connected to the assembly barrier steel plate by threads to adjust the barrier height of the assembly barrier steel plate up and down.

5. A prefabricated concrete interception construction component, characterized in that, The concrete interception method applicable to any one of claims 1-4 includes: The assembly barrier steel plate is located at the beam-column joint. The assembly barrier steel plate consists of at least two sets of Z-shaped assembly fixing steel plates (4) that overlap and cooperate with each other, and H-shaped assembly fixing steel plates (3) located at both ends for connecting the Z-shaped assembly fixing steel plates (4). The horizontal fixed steel plate base (1) is connected to the assembly barrier steel plate, and the horizontal fixed steel plate base (1) is connected to and positioned by two sets of H-shaped assembly fixed steel plates (3) respectively through two sets of fixed steel plates (2) to constrain the displacement and movement of the assembly barrier steel plate.

6. The prefabricated concrete interception construction component as described in claim 5, characterized in that, The H-shaped assembly fixing steel plate (3) is provided with multiple sets of connecting grooves (36) on one side. The connecting grooves (36) are provided with safety airbags or arc-shaped spring plates to prevent concrete from slipping on the side. The bottom of the barrier steel plate of the assembly is provided with bottom opening interceptor (5) to enhance the bottom opening sealing effect.

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