Post-cast strip concrete reinforcing structure

Abstract

The utility model discloses a kind of post-cast strip concrete reinforcing steel structure, it is related to post-cast strip construction technology field, including concrete cushion, the upper surface of concrete cushion is poured with advanced concrete, in the utility model, concrete cushion provides basic support for entirety, advanced concrete is as bottom connecting base, the second reinforcing mesh inside first-pouring concrete will stress be transmitted to support steel sheet through connecting reinforcing steel, support steel sheet again disperses force to post-cast concrete and the support reinforcing steel of oblique staggered arrangement, truss structure formed by support reinforcing steel effectively resists lateral force and deformation, simultaneously, the connecting place of first-pouring concrete and post-cast concrete is penetrated by first reinforcing mesh, the interface bonding of new and old concrete is strengthened, so that first-pouring and post-cast concrete and each reinforcing steel, steel sheet component form integral force system, avoid post-cast strip to become weak link of structure, reduce cracking risk and improve bearing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of post-cast strip construction technology, and in particular to a post-cast strip concrete reinforcement structure. Background Technology

[0002] A post-cast strip is a concrete strip left at appropriate locations in foundation slabs, walls, beams, etc., during building construction to prevent harmful cracks caused by uneven shrinkage or settlement of the cast-in-place reinforced concrete structure, in accordance with design or construction specifications.

[0003] In existing technologies, during the construction of post-pouring strips, the bond strength between the new and old concrete interfaces is difficult to reach an ideal level. At the same time, due to unreasonable reinforcement connection methods, there is a discontinuity in the force transfer between the first and second poured concrete, which makes it difficult to fully utilize the load-bearing capacity of the overall structure and results in insufficient resistance to deformation. This not only has an adverse effect on the long-term durability of the structure, but also poses a potential threat to the safety performance of the overall structure. Utility Model Content

[0004] The purpose of this utility model is to solve the problem in the prior art that the force transfer between the first-poured concrete and the later-poured concrete is discontinuous due to unreasonable rebar connection, which makes it difficult to fully exert the bearing capacity of the overall structure and results in insufficient resistance to deformation. Therefore, this utility model proposes a post-pouring strip concrete rebar structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a post-cast concrete reinforced concrete structure, comprising a concrete cushion layer, an upper surface of which is filled with pre-cast concrete, and two sides of the upper surface of the pre-cast concrete are filled with pre-cast concrete. Post-cast concrete is poured between the two pre-cast concrete sections and together with the middle of the upper surface of the pre-cast concrete. A second reinforcing mesh is fixedly connected inside each of the two pre-cast concrete sections. A connecting reinforcing bar is fixedly connected to one side of each of the two second reinforcing meshes. A supporting steel plate is fixedly connected to the other end of each of the two connecting reinforcing bars. The two supporting steel plates are fixedly connected to both sides of the post-cast concrete. A third reinforcing mesh is fixedly connected to the other side of each of the two supporting steel plates.

[0006] Preferably, there are supporting steel bars fixedly connected between the two third steel meshes. The supporting steel bars are inclined and the two adjacent supporting steel bars are staggered.

[0007] Preferably, a first steel mesh is fixedly connected to the connection points of the two pre-cast concrete sections and the advanced concrete section, with the middle part of the first steel mesh fixedly connected to the interior of the post-cast concrete.

[0008] Preferably, an external waterstop is fixedly connected to the center of the upper surface of the concrete cushion layer, and a water-stop caulking is fixedly connected to the center of the upper surface of the external waterstop.

[0009] Preferably, the pre-cast concrete is internally fixed with additional steel mesh, with two additional steel meshes set on both sides of the water-stop caulking joint, and the other ends of the two additional steel meshes respectively inserted into the interior of the two pre-cast concretes.

[0010] Preferably, a water-stop steel plate is fixedly installed between the pre-poured concrete and the advanced concrete, with the other half of the water-stop steel plate embedded inside the post-poured concrete.

[0011] Preferably, the upper surfaces of both the pre-poured and post-poured concrete are fixedly fitted with a steel mesh for closure.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the concrete cushion layer provides foundation support for the whole, the pre-cast concrete serves as the bottom connecting foundation, and the second steel mesh inside the pre-cast concrete transmits the force to the supporting steel plate through the connecting steel bars. The supporting steel plate then distributes the force to the post-cast concrete and the inclined and staggered supporting steel bars. The truss structure formed by the supporting steel bars effectively resists lateral forces and deformation. At the same time, the first steel mesh runs through the connection between the pre-cast concrete and the post-cast concrete, strengthening the interface bond between the old and new concrete, so that the pre-cast and post-cast concrete and each steel bar and steel plate component form an integrated force system, avoiding the post-cast strip from becoming a weak link in the structure, reducing the risk of cracking and improving the load-bearing efficiency.

[0014] 2. In this utility model, the externally attached waterstop prevents groundwater from seeping into the gap between the foundation layer and the pre-cast concrete. The waterstop caulking on it fills the tiny gaps to form a second line of waterproof defense. The waterstop steel plate horizontally blocks the seepage channel at the interface, reducing the risk of leakage. The additional steel mesh in the pre-cast concrete is also embedded in the pre-cast concrete, which strengthens the connection and crack resistance of the two. The closing steel mesh on the surface of the pre-cast concrete and the post-cast concrete enhances the integrity of the surface layer and reduces surface cracks. While ensuring waterproof and structural performance, it improves construction efficiency. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of a post-cast concrete reinforcement structure;

[0016] Figure 2 This utility model provides a schematic diagram of the planar structure of a post-cast concrete reinforcement structure;

[0017] Figure 3 This utility model provides a schematic diagram of the internal cross-sectional structure of a post-cast concrete reinforced concrete structure;

[0018] Figure 4 This utility model provides a disassembly diagram of a post-cast concrete reinforcement structure.

[0019] Legend: 1. First concrete pour; 2. Reinforcing mesh at the joint; 3. Concrete foundation; 4. Water-stop steel plate; 5. External water-stop strip; 6. Water-stop caulking; 7. Pre-concrete; 8. Post-concrete pour; 9. Supporting steel plate; 10. Supporting reinforcing bars; 11. First reinforcing mesh; 12. Connecting reinforcing bars; 13. Second reinforcing mesh; 14. Additional reinforcing mesh; 15. Third reinforcing mesh. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a post-cast concrete reinforced concrete structure, including a concrete cushion layer 3. A pre-cast concrete 7 is poured on the upper surface of the concrete cushion layer 3. Pre-cast concrete 1 is poured on both sides of the upper surface of the pre-cast concrete 7. Post-cast concrete 8 is poured between the two pre-cast concrete 1s and together with the middle of the upper surface of the pre-cast concrete 7. A second reinforcing mesh 13 is fixedly connected inside each of the two pre-cast concrete 1s. A connecting reinforcing bar 12 is fixedly connected to one side of each of the two second reinforcing meshes 13. A supporting steel plate 9 is fixedly connected to the other end of each of the two connecting reinforcing bars 12. The two supporting steel plates 9 are fixedly connected to both sides of the post-cast concrete 8. A third reinforcing mesh 15 is fixedly connected to the other side of each of the two supporting steel plates 9. A supporting reinforcing bar 10 is fixedly connected between the two third reinforcing meshes 15. The supporting reinforcing bars 10 are inclined, and adjacent supporting reinforcing bars 10 are staggered. A first reinforcing mesh 11 is fixedly connected at the connection point between the two pre-cast concrete 1s and the pre-cast concrete 7. The middle of the first reinforcing mesh 11 is fixedly connected inside the post-cast concrete 8.

[0023] A concrete cushion layer 3 is poured to form a flat foundation support surface. Pre-cast concrete 7 is poured on the upper surface of the concrete cushion layer 3 as the bottom support foundation for subsequent concrete. Pre-cast concrete 1 is poured on both sides of the upper surface of the pre-cast concrete 7. Simultaneously, a second steel mesh 13 is pre-embedded inside the pre-cast concrete 1. The second steel mesh 13 is fixed to the supporting steel plate 9 via connecting steel bars 12, allowing the stress of the steel bars in the pre-cast concrete 1 to be transferred to the supporting steel plate 9. Between the two supporting steel plates 9, inclined and staggered supporting steel bars 10 are used to connect, forming a truss-type support system. At the same time, a first steel mesh 11 is arranged at the connection between the pre-cast concrete 1 and the pre-cast concrete 7, with the middle portion of the first steel mesh 11 reserved within the pouring area of ​​the subsequent concrete 8. After the pre-cast concrete 1 reaches its design strength, the subsequent concrete 8 is poured between the two pre-cast concrete 1 and in the middle of the upper surface of the pre-cast concrete 7, so that the subsequent concrete 8 encloses the supporting steel plate 9, the supporting steel bars 10, and the middle portion of the first steel mesh 11, achieving an overall integration of the old and new concrete with the steel bars and steel plates.

[0024] When the first-poured concrete 1 bears the load, the tension of the internal second steel mesh 13 is transferred to the supporting steel plate 9 through the connecting steel bar 12. The supporting steel plate 9 then distributes the force to the subsequent-poured concrete 8 and the supporting steel bar 10. The inclined and intersecting supporting steel bars 10 form a spatial truss structure, which enhances the shear and bending resistance of the area of ​​the subsequent-poured concrete 8, while balancing the lateral forces of the first-poured concrete 1 on both sides, avoiding excessive deformation in the post-poured strip area. The first steel mesh 11 is embedded in both the first-poured concrete 1 and the subsequent-poured concrete 8, strengthening the interface bond between the old and new concrete, so that the load can be transferred more evenly between the first-poured concrete 1 and the subsequent-poured concrete 8, improving the structural continuity and reducing the risk of cracking in the post-poured strip.

[0025] Example 2: Figure 1 - Figure 4 As shown, an external waterstop 5 is fixedly connected to the center of the upper surface of the concrete cushion layer 3, and a waterstop caulking 6 is fixedly connected to the center of the upper surface of the external waterstop 5; an additional steel mesh 14 is fixedly connected inside the pre-cast concrete 7, and two additional steel meshes 14 are set on both sides of the waterstop caulking 6, with the other ends of the two additional steel meshes 14 respectively inserted into the interior of the two pre-cast concretes 1; a waterstop steel plate 4 is fixedly installed between the pre-cast concrete 1 and the pre-cast concrete 7, with the other half of the waterstop steel plate 4 embedded inside the post-cast concrete 8; a closing steel mesh 2 is fixedly installed on the upper surfaces of the pre-cast concrete 1 and the post-cast concrete 8.

[0026] After pouring the concrete foundation 3, an external waterstop 5 is fixed at the center of its upper surface. Then, a waterstop sealant 6 is fixed at the center of the upper surface of the external waterstop 5 to enhance the waterstop effect. Pre-cast concrete 7 is poured on the concrete foundation 3, and additional steel mesh 14 is pre-embedded inside the pre-cast concrete 7. The additional steel mesh 14 is located on both sides of the waterstop sealant 6, with its other end inserted into the two pre-cast concrete sections 1, thus establishing a steel connection between the pre-cast concrete 7 and the pre-cast concrete 1. Pre-cast concrete 1 is poured on both sides of the upper surface of the pre-cast concrete 7, and a waterstop steel plate 4 is fixed between the pre-cast concrete 1 and the pre-cast concrete 7, with half of the waterstop steel plate 4 embedded in the pre-cast concrete. The first half of the concrete is reserved for embedding the second half of the concrete 8, forming a horizontal water-stop barrier. After the first concrete 1 reaches the design strength, the second concrete 8 is poured. Finally, the finishing steel mesh 2 is fixed on the upper surface of the first concrete 1 and the second concrete 8 to cover the surface of the post-cast strip. The additional steel mesh 14 is embedded in the first concrete 7 and the first concrete 1 to enhance the crack resistance of the first concrete 7 and strengthen the steel connection between the two, so that the load transfer is smoother. The finishing steel mesh 2 covers the surface of the first concrete 1 and the second concrete 8, enhances the tensile strength of the surface concrete, reduces surface cracking, and makes the surface of the post-cast strip form a whole, improving the appearance quality and durability.

[0027] The usage and working principle of this device are as follows: First, a concrete foundation layer 3 is poured to provide basic support. An external waterstop 5 and a waterstop caulking strip 6 are then fixed sequentially at the center of its surface to construct a bottom waterproof barrier. Next, pre-cast concrete 7 is poured, with an additional steel mesh 14 pre-embedded. Then, pre-cast concrete 1 is poured on both sides of the upper surface of the pre-cast concrete 7. During pouring, a waterstop steel plate 4 is fixed between the pre-cast concrete 1 and the pre-cast concrete 7, and a second steel mesh 13 is pre-embedded inside the pre-cast concrete 1. The second steel mesh 13 is fixed to the supporting steel plate 9 via connecting steel bars 12. Then, inclined and interlaced support steel bars 10 are used to connect the support steel plates 9 on both sides to form a truss support system. The first steel mesh 11 is arranged at the connection between the pre-cast concrete 1 and the pre-cast concrete 7. After the pre-cast concrete 1 reaches the design strength, the post-cast concrete 8 is poured to wrap the support steel plate 9, the support steel bars 10, the middle of the first steel mesh 11 and the reserved part of the water-stop steel plate 4, so as to achieve the overall combination of the new and old concrete and each component. The finishing steel mesh 2 is fixed on the upper surface of the pre-cast concrete 1 and the post-cast concrete 8 to enhance the integrity and crack resistance of the surface layer.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A reinforced concrete structure with a post-cast strip, comprising a concrete cushion layer (3), characterized in that: The upper surface of the concrete cushion layer (3) is filled with pre-cast concrete (7), and pre-cast concrete (1) is poured on both sides of the upper surface of the pre-cast concrete (7). Post-cast concrete (8) is poured between the two pre-cast concrete (1) and in the middle of the upper surface of the pre-cast concrete (7). The interior of the two pre-cast concrete (1) is fixedly connected with a second steel mesh (13). One side of the two second steel meshes (13) is fixedly connected with a connecting steel bar (12). The other end of the two connecting steel bars (12) is fixedly connected with a supporting steel plate (9). The two supporting steel plates (9) are fixedly connected on both sides of the post-cast concrete (8). The other side of the two supporting steel plates (9) is fixedly connected with a third steel mesh (15).

2. The reinforced concrete structure with post-cast strip according to claim 1, characterized in that: Two of the third steel meshes (15) are fixedly connected by supporting steel bars (10), which are inclined and are staggered.

3. The reinforced concrete structure with post-cast strip according to claim 1, characterized in that: The first steel mesh (11) is fixedly connected to the connection between the two pre-cast concrete (1) and the advanced concrete (7), and the middle part of the first steel mesh (11) is fixedly connected to the interior of the post-cast concrete (8).

4. The reinforced concrete structure with post-cast strip according to claim 1, characterized in that: An external waterstop (5) is fixedly connected to the center of the upper surface of the concrete cushion layer (3), and a waterstop caulking (6) is fixedly connected to the center of the upper surface of the external waterstop (5).

5. A reinforced concrete structure with a post-cast strip according to claim 1, characterized in that: The pre-cast concrete (7) is internally fixedly connected with additional steel mesh (14), and the two additional steel meshes (14) are set on both sides of the water-stop caulking joint (6), and the other ends of the two additional steel meshes (14) are respectively inserted into the interior of the two pre-cast concrete (1).

6. A reinforced concrete structure with a post-cast strip according to claim 1, characterized in that: A water-stop steel plate (4) is fixedly installed between the pre-cast concrete (1) and the advanced concrete (7), and the other half of the water-stop steel plate (4) is embedded in the interior of the post-cast concrete (8).

7. A reinforced concrete structure with a post-cast strip according to claim 1, characterized in that: The upper surfaces of the pre-cast concrete (1) and the post-cast concrete (8) are jointly fixed with a steel mesh (2) for closing.

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