Prefabricated laminated slab post-cast joint structure

Abstract

The utility model relates to the technical field of laminated slab joint treatment, in particular to a prefabricated laminated slab post-pouring joint structure, which is characterized in that connecting ribs are arranged on prefabricated laminated slabs and / or extension pieces are arranged on the prefabricated laminated slabs, connecting ribs are arranged on the extension pieces, and reinforcing steel bars are arranged between adjacent prefabricated laminated slabs and / or between adjacent extension pieces. The connecting ribs on the adjacent prefabricated laminated slabs and / or the connecting ribs on the adjacent extension pieces are connected into a whole through the reinforcing steel bars, so that a reinforcing steel reinforcement cage structure is formed in the post-cast joint formed between the adjacent prefabricated laminated slabs, and the connecting strength between the adjacent prefabricated laminated slabs is enhanced; the number of building materials of the scaffold assembly at the bottom of the post-cast joint formed between the adjacent prefabricated laminated slabs is reduced, the building occupied area is reduced, the scaffold structure is simplified, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite plate joint processing, in particular to a post-cast joint structure of a prefabricated composite plate. Background Art

[0002] Currently, post-cast concrete strips are often required at the joints of precast composite slabs to form post-cast strips. However, during the construction of post-cast strips at precast composite slab joints, quality defects such as mold expansion and misalignment often occur, resulting in a poor surface appearance after pouring and prone to grout leakage defects in the later stages. Therefore, to address this technical problem, researchers in the prior art have conducted research on leak-proof structures for post-cast strips of precast composite slabs.

[0003] For example: Patent No. 202220123195.9 discloses a plurality of prefabricated composite panels arranged in an arrangement, wherein a post-cast strip is formed between adjacent prefabricated composite panels, and the bottom edge where the prefabricated composite panel connects to the post-cast strip is a leak-proof edge, and the leak-proof edge of the prefabricated composite panel is concavely provided with a leak-proof groove, and a notch connected to the post-cast strip is formed on the outside of the leak-proof groove, and the inside of the leak-proof groove has a vertical groove wall, and the bottom surface of the post-cast strip is attached to a template, and the edge of the template extends to the prefabricated composite panel and covers the bottom of the leak-proof groove. A groove structure is provided at the bottom edge of the prefabricated composite panel so that the poured concrete of the post-cast strip flows into the groove, which does not change the stress-bearing performance of the prefabricated composite panel and can solve the risk of leakage of the poured concrete at the post-cast strip.

[0004] In existing technologies, insufficient connection strength between precast composite panels results in the need to construct scaffolding assemblies using excessive amounts of scaffolding materials at the bottom during the subsequent concrete pouring process to ensure the relative stability of the precast composite panels. This excessive amount of scaffolding material not only occupies a large area, impacting construction, but also increases material and labor costs. Utility Model Content

[0005] In order to solve the above technical problems existing in the prior art, the utility model provides a post-cast joint structure of a prefabricated composite slab.

[0006] This is achieved specifically through the following technical solutions:

[0007] The post-cast joint structure of prefabricated composite slabs comprises a plurality of arranged prefabricated composite slabs, wherein a post-cast joint is formed between adjacent prefabricated composite slabs; a post-cast formwork is provided at the bottom of the post-cast joint, wherein the post-cast formwork extends to the prefabricated composite slabs and is tightly attached to the lower surface of the prefabricated composite slabs; a scaffolding assembly is provided at the bottom of the post-cast formwork, and an extension piece is provided on the connecting edge of the prefabricated composite slab and the post-cast joint, wherein the extension piece and the prefabricated composite slab are integrally formed, and within the post-cast joint, a plurality of connecting ribs are provided on the extension piece, a plurality of reinforcing steel bars are provided between adjacent extension pieces, and the reinforcing steel bars can connect the connecting ribs between adjacent extension pieces into a whole; and / or within the post-cast joint, a plurality of connecting ribs are provided on the prefabricated composite slabs, a plurality of reinforcing steel bars are provided between adjacent prefabricated composite slabs, and the reinforcing steel bars can connect the connecting ribs between adjacent prefabricated composite slabs into a whole.

[0008] By arranging connecting bars on the prefabricated composite slabs and / or arranging extension pieces on the prefabricated composite slabs, arranging connecting bars on the extension pieces, and arranging reinforcing steel bars between adjacent prefabricated composite slabs and / or adjacent extension pieces, the reinforcing steel bars are used to connect the connecting bars on adjacent prefabricated composite slabs and / or the connecting bars on adjacent extension pieces into a whole, so that a reinforced steel cage structure is formed in the post-cast joints formed between adjacent prefabricated composite slabs, thereby enhancing the strength of the connection between the adjacent prefabricated composite slabs, helping to reduce the construction materials of the scaffolding components at the bottom of the post-cast joints formed between adjacent prefabricated composite slabs, reducing the construction area, simplifying the scaffolding structure, and improving construction efficiency.

[0009] In order to improve the filling effect of the post-cast concrete in the post-cast joints, preferably, a plurality of chamfered portions are provided on the prefabricated composite panels at the top of the post-cast joints.

[0010] To improve the effectiveness of preventing grout leakage at post-cast joints and enhance the connection between the precast composite slab and the post-cast concrete, the chamfered portion is preferably provided with a plurality of first blocking members. More preferably, the first blocking members are grooves perpendicular to the inclined surface of the chamfered portion and / or grooves extending vertically downward. More preferably, the grooves have a trapezoidal cross-section.

[0011] To improve the effectiveness of preventing grout leakage at post-cast joints and enhance the connection strength between the precast composite slab and the post-cast concrete, the upper surface of the extension member is preferably provided with a plurality of second blocking members. More preferably, the second blocking members are recesses and / or protrusions. More preferably, the recesses have a trapezoidal cross-section and / or the protrusions have a trapezoidal cross-section.

[0012] In order to ensure the strength and stability of the connection between the precast composite slab and the post-cast concrete, it is preferred that a plurality of fixed trusses, post-cast negative reinforcements and connecting pieces are provided on the top of the precast composite slab, and the fixed trusses and the post-cast negative reinforcements are fixedly connected to form a whole through the connecting pieces; the post-cast concrete is poured on the top surface of the precast composite slab, and the post-cast concrete pre-buries the fixed trusses and the post-cast negative reinforcements, and the post-cast concrete pre-buries the post-cast joints to form a whole.

[0013] Preferably, the post-cast formwork extends to the prefabricated composite board and covers the lower surface of the extension member, and the upper surface of the post-cast formwork is in close contact with the lower surface of the extension member.

[0014] Compared with the prior art, the technical effects created by the present invention are embodied in:

[0015] The present invention has a simple structure. Connecting bars are provided on the prefabricated composite panels in the post-cast joints and / or connecting bars are provided on the extension pieces in the post-cast joints. The connecting bars are connected into a whole using reinforcing steel bars to form a reinforcing steel cage, thereby improving the connection strength between adjacent prefabricated composite panels, helping to reduce the supporting force required at the bottom of the post-cast joints between adjacent prefabricated composite panels, and further helping to reduce the construction materials and construction area of the scaffolding components, reducing the cost of scaffolding construction, and ensuring the connection stability between adjacent prefabricated composite panels.

[0016] The invention provides an extension piece on the prefabricated composite board, the extension piece is located in the post-cast joint, and the extension piece and the prefabricated composite board are integrally formed, which helps to improve the anti-leakage effect of the post-cast joint when pouring concrete.

[0017] In addition, the present invention provides chamfers on the precast composite panels, which are then grooved. This not only improves the leakage prevention effect, but also increases the contact surface between the precast composite panels and the post-cast concrete, helping to improve the stability and safety of the precast composite panel installation. The present invention also provides a second barrier (e.g., a notch and / or a protrusion) on the extension piece, which helps to enhance the leakage prevention effect and improve the connection strength between the precast composite panel and the post-cast concrete, ensuring the stability of the precast composite panel installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 for Figure 1 A schematic structural diagram of another embodiment.

[0020] Figure 3 for Figure 2 Another structural diagram of an embodiment.

[0021] Figure 4 for Figure 1 A schematic structural diagram of another embodiment.

[0022] Figure 5 for Figure 4 Another structural diagram of an embodiment.

[0023] Figure 6 for Figure 2 and Figure 4 Combined with the structural diagram of the embodiment.

[0024] Figure 7 for Figure 3 and Figure 4 Combined with the structural diagram of the embodiment.

[0025] Figure 8 for Figure 2 and Figure 5 Combined with the structural diagram of the embodiment.

[0026] Figure 9 for Figure 3 and Figure 5 Combined with the structural diagram of the embodiment.

[0027] 1- Precast composite slab 2- Extension 3- Chamfered part 4- Post-cast formwork 5- Scaffolding assembly 6- Reinforced steel cage 7- Connector 8- Post-cast concrete 9- Post-cast negative reinforcement 10- Fixed truss 11- First barrier 12- Second barrier. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further defined below in conjunction with the accompanying drawings and specific implementation methods, but the scope of protection required is not limited to the description.

[0029] like Figure 1 As shown, in some embodiments, the post-cast joint structure of the prefabricated composite slabs includes a plurality of arranged prefabricated composite slabs 1, with post-cast joints formed between adjacent prefabricated composite slabs 1; a post-cast formwork 4 is provided at the bottom of the post-cast joint, and the post-cast formwork 4 extends to the prefabricated composite slabs 1 and is tightly attached to the lower surface of the prefabricated composite slabs 1; a scaffolding assembly 5 is provided at the bottom of the post-cast formwork 4; a plurality of connecting ribs are provided on the prefabricated composite slabs 1 in the post-cast joints, and a plurality of reinforcing steel bars are provided between adjacent prefabricated composite slabs 1, and the reinforcing steel bars can connect the connecting ribs between the adjacent prefabricated composite slabs 1 into a whole.

[0030] By providing a number of connecting ribs on the prefabricated composite slabs 1 and providing a number of reinforcing ribs between adjacent prefabricated composite slabs, the reinforcing ribs can connect the connecting ribs into a whole, so that a reinforcing steel cage 6 is formed between adjacent prefabricated composite slabs 1, and it is ensured that the reinforcing steel cage 6 can connect the adjacent prefabricated composite slabs 1 into a whole, which greatly improves the connection strength between adjacent prefabricated composite slabs 1, helps to reduce the support force required at the bottom of the post-cast joints formed by adjacent prefabricated composite slabs, and then helps to reduce the material consumption of scaffolding assembly construction and reduce the floor space, thereby ensuring the stability of the prefabricated composite slab joint connection.

[0031] like Figure 1 As shown, in some embodiments, the post-cast joint structure of the prefabricated composite slab includes a plurality of arranged prefabricated composite slabs 1, and a post-cast joint is formed between adjacent prefabricated composite slabs 1; a post-cast formwork 4 is provided at the bottom of the post-cast joint, and the post-cast formwork 4 extends to the prefabricated composite slab 1 and is close to the lower surface of the prefabricated composite slab 1; a scaffolding assembly 5 is provided at the bottom of the post-cast formwork 4; an extension piece 2 is provided on the connecting edge of the prefabricated composite slab 1 and the post-cast joint, and the extension piece 2 is integrally formed with the prefabricated composite slab 1, and is located in the post-cast joint. A plurality of connecting ribs are provided on the extension piece 2, and a plurality of reinforcing steel bars are provided between adjacent extension pieces 2, and the reinforcing steel bars can connect the connecting ribs between adjacent extension pieces 2 into a whole.

[0032] The extension piece 2 is formed integrally with the prefabricated composite panel 1, and connecting ribs are provided on the extension piece 2. The connecting ribs are connected by reinforcing steel bars and then form a reinforcing steel cage 6 in the post-cast joint, thereby improving the connection strength between adjacent prefabricated composite panels 1, helping to reduce the support force required at the bottom of the post-cast joint formed by adjacent prefabricated composite panels, and then helping to reduce the material consumption of scaffolding components and reduce the floor space, thereby ensuring the stability of the joint connection of the prefabricated composite panels; and through the provision of the extension piece 2, the anti-leakage effect between adjacent prefabricated composite panels 1 is improved.

[0033] like Figure 1As shown, in some embodiments, the post-cast joint structure of the prefabricated composite slab includes several arranged prefabricated composite slabs 1, and post-cast joints are formed between adjacent prefabricated composite slabs 1; a post-cast formwork 4 is provided at the bottom of the post-cast joint, and the post-cast formwork 4 extends to the prefabricated composite slab 1 and is close to the lower surface of the prefabricated composite slab 1; a scaffolding assembly 5 is provided at the bottom of the post-cast formwork 4; an extension piece 2 is provided on the connecting edge of the prefabricated composite slab 1 and the post-cast joint, and the extension piece 2 is integrally formed with the prefabricated composite slab 1, and is located in the post-cast joint. A plurality of connecting ribs are provided on the extension piece 2, and a plurality of reinforcing steel bars are provided between adjacent extension pieces 2, and the reinforcing steel bars can connect the connecting ribs located between adjacent extension pieces 2 into a whole; a plurality of connecting ribs are provided on the prefabricated composite slab 1 in the post-cast joint, and a plurality of reinforcing steel bars are provided between adjacent prefabricated composite slabs 1, and the reinforcing steel bars can connect the connecting ribs located between adjacent prefabricated composite slabs 1 into a whole. By providing connecting bars on both the prefabricated composite panels 1 and the extension member 2, and connecting the connecting bars with reinforcing steel bars, a reinforcing steel cage 6 is formed in the post-cast joint, which helps to reduce the support strength required at the bottom of the post-cast joint formed by adjacent prefabricated composite panels, thereby helping to reduce the material consumption of the scaffolding assembly and the floor space, and ensure the stability of the joint connection of the prefabricated composite panels; and by providing the extension member 2, the anti-leakage effect between the adjacent prefabricated composite panels 1 is improved.

[0034] In addition, in certain other embodiments, the post-cast joint structure of the prefabricated composite slabs includes a plurality of arranged prefabricated composite slabs 1, with post-cast joints formed between adjacent prefabricated composite slabs 1; a post-cast formwork 4 is provided at the bottom of the post-cast joint, the post-cast formwork 4 extends to the prefabricated composite slabs 1 and is in close contact with the lower surface of the prefabricated composite slabs 1; a scaffolding assembly 5 is provided at the bottom of the post-cast formwork 4; an extension piece 2 is provided at the connecting edge between the prefabricated composite slabs 1 and the post-cast joint, the extension piece 2 is integrally formed with the prefabricated composite slab 1, a plurality of connecting ribs are provided on the prefabricated composite slabs 1 in the post-cast joint, a plurality of reinforcing steel bars are provided between adjacent prefabricated composite slabs 1, and the reinforcing steel bars can connect the connecting ribs between the adjacent prefabricated composite slabs 1 into a whole. The role of the extension piece 2 is used to improve the anti-leakage effect, and the connecting ribs and the reinforcing steel bars are used to form a reinforcing steel cage 6 to enhance the connection strength between adjacent prefabricated composite slabs.

[0035] like Figure 1 As shown, in some embodiments, the precast composite slab 1 is provided with a plurality of chamfered portions 3 at the top of the post-cast joint to increase the contact area between the precast composite slab 1 and the post-cast concrete 8.

[0036] like Figure 2 and Figure 3 , Figure 6-9As shown, in some embodiments, the chamfered portion 3 is provided with a plurality of first blocking members 11. These first blocking members 11 are grooves perpendicular to the inclined surface of the chamfered portion 3 and / or grooves extending vertically downward. This helps to increase the contact area between the precast composite slab 1 and the post-cast concrete 8 and also helps to enhance the leakage prevention effect.

[0037] In some embodiments, the cross section of the groove is trapezoidal, which helps to improve the connection strength between the prefabricated composite slab 1 and the post-cast concrete 8 and improve the stability of the prefabricated composite slab 1 after the post-cast concrete 8 is poured.

[0038] like Figure 4-9 As shown, in some embodiments, the upper surface of the extension member 2 is provided with a plurality of second blocking members 12. This increases the contact area between the prefabricated composite slab 1 and the post-cast concrete 8 and improves the anti-leakage effect. Figure 4-9 As shown, in a more preferred embodiment, the second barrier (12) is a recess and / or a protrusion.

[0039] In some embodiments, the cross-section of the recess is trapezoidal and / or the cross-section of the protrusion is trapezoidal, which helps to improve the connection strength between the precast composite slab 1 and the post-cast concrete 8, improve the stability of the precast composite slab 1 after the post-cast concrete 8 is poured, and improve the effect of preventing grout leakage.

[0040] like Figure 1-9 As shown, in some embodiments, the top of the precast composite slab 1 is provided with a plurality of fixed trusses 10, post-cast negative reinforcement 9, and connectors 7. The fixed trusses 10 and the post-cast negative reinforcement 9 are fixedly connected to form a whole through the connectors 7. Post-cast concrete 8 is poured on the top surface of the precast composite slab 1. The post-cast concrete 8 embeds the fixed trusses 10 and the post-cast negative reinforcement 9, and the post-cast concrete 8 embeds the post-cast joints to form a whole. This helps to improve the connection strength between the precast composite slab 1 and the post-cast concrete 8, and enhances the stability of the precast composite slab installation.

[0041] like Figure 1-9 As shown, in some embodiments, the post-cast formwork 4 extends to the prefabricated composite panel 1 and covers the lower surface of the extension member 2, and the upper surface of the post-cast formwork 4 is in close contact with the lower surface of the extension member 2.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent replacements or changes to the technical solutions and inventive concepts of the present invention shall be covered by the scope of protection of the present invention. Other matters not covered by the present invention may be implemented by conventional technical means with reference to the prior art or common knowledge known to those skilled in the art.

Claims

1. A prefabricated composite slab post-cast joint structure, comprising a plurality of arranged prefabricated composite slabs (1), wherein post-cast joints are formed between adjacent prefabricated composite slabs (1); a post-cast template (4) is provided at the bottom of the post-cast joint, the post-cast template (4) extending to the prefabricated composite slabs (1) and closely attached to the lower surface of the prefabricated composite slabs (1); a scaffolding assembly (5) is provided at the bottom of the post-cast template (4); and the structure is characterized in that: An extension piece (2) is provided on the connecting edge of the prefabricated composite plate (1) and the post-cast joint, the extension piece (2) and the prefabricated composite plate (1) are integrally formed, and a plurality of connecting ribs are provided on the extension piece (2) in the post-cast joint, a plurality of reinforcing steel bars are provided between adjacent extension pieces (2), and the reinforcing steel bars are capable of connecting the connecting ribs between adjacent extension pieces (2) into a whole; and / or a plurality of connecting ribs are provided on the prefabricated composite plate (1) in the post-cast joint, a plurality of reinforcing steel bars are provided between adjacent prefabricated composite plates (1), and the reinforcing steel bars are capable of connecting the connecting ribs between adjacent prefabricated composite plates (1) into a whole.

2. The post-cast joint structure of prefabricated composite slabs according to claim 1, characterized in that: At the top of the post-cast joint, the prefabricated composite slab (1) is provided with a plurality of chamfered portions (3).

3. The post-cast joint structure of prefabricated composite slabs according to claim 2, characterized in that: A plurality of first blocking members (11) are provided on the chamfered portion (3).

4. The post-cast joint structure of prefabricated composite slabs according to claim 3, characterized in that: The first blocking member (11) is a groove perpendicular to the inclined surface of the chamfered portion (3) and / or a groove arranged vertically downward.

5. The post-cast joint structure of prefabricated composite slabs according to claim 4, characterized in that: The cross section of the groove is trapezoidal.

6. The post-cast joint structure of prefabricated composite slabs according to claim 1, characterized in that: A plurality of second blocking members (12) are provided on the upper surface of the extension member (2).

7. The post-cast joint structure of prefabricated composite slabs according to claim 6, characterized in that: The second barrier (12) is a notch and / or a protrusion.

8. The post-cast joint structure of prefabricated composite slabs according to claim 7, characterized in that: The cross section of the notch is trapezoidal and / or the cross section of the protrusion is trapezoidal.

9. The post-cast joint structure of prefabricated composite slabs according to claim 1, characterized in that: The top of the precast composite slab (1) is provided with a plurality of fixed trusses (10), post-cast negative reinforcements (9), and connectors (7), wherein the fixed trusses (10) and the post-cast negative reinforcements (9) are fixedly connected to form a whole through the connectors (7); post-cast concrete (8) is poured on the top surface of the precast composite slab (1), wherein the post-cast concrete (8) pre-buries the fixed trusses (10) and the post-cast negative reinforcements (9), and the post-cast concrete (8) pre-buries the post-cast joints to form a whole.

10. The post-cast joint structure of prefabricated composite slabs according to claim 1, characterized in that: The post-cast formwork (4) extends to the prefabricated composite board (1) and covers the lower surface of the extension member (2), and the upper surface of the post-cast formwork (4) is in close contact with the lower surface of the extension member (2).

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