Prefabricated laminated slab abutted seam structure

Abstract

The utility model relates to the technical field of building construction, and discloses a prefabricated laminated slab abutted seam structure which comprises two prefabricated bottom plates, a plurality of beard reinforcing steel bars are arranged in the two prefabricated bottom plates, an abutted seam groove is formed between the two beard reinforcing steel bars, an anti-crack and anti-seepage assembly is arranged in the abutted seam groove, and the anti-crack and anti-seepage assembly is arranged in the abutted seam groove. A plurality of truss steel bars are arranged at the tops of the two prefabricated bottom plates, concrete mounting blocks are fixedly connected to the front sides and the rear sides of the two prefabricated bottom plates, a fixing plate is slidably connected between the two concrete mounting blocks, a shell is fixedly connected to the outer side of the fixing plate, and a pull rod is slidably connected into the shell. According to the concrete mortar pouring and filling device, the baffle is driven to move outwards by pulling the pull rod, then the connecting rod is driven to pull the inserting rod to be separated from the interior of the concrete mounting block, rapid dismounting of the fixing plate is achieved, the mortar flowing problem generated when concrete mortar pouring and filling are carried out on the abutted seam groove is effectively solved, and the construction quality and efficiency are improved.

Description

Technical Field

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

[0002] Composite panels, also known as prefabricated composite panels, are a new type of building panel in the construction field. It adopts industrialized production methods, prefabricating concrete panels to a certain stage in the factory, and then transporting them to the construction site for further assembly and pouring. This type of panel is characterized by high strength, good seismic performance and convenient construction technology, so it is widely used in modern buildings. In order to better adapt to the shape and size requirements of buildings or structures, joints will be processed at the joints.

[0003] In the prior art, when pouring and filling the joint groove with concrete mortar, the concrete is generally poured directly. However, after the actual pouring, the joint often has slurry flow due to the difficulty in controlling the height difference, causing the concrete mortar to flow out from the outside of the joint groove. Therefore, a prefabricated composite slab joint structure is proposed to solve the above problem. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a prefabricated composite plate joint structure, which aims to improve the slurry flow problem generated when pouring and filling concrete mortar at the joints in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a prefabricated composite plate joint structure, including two prefabricated bottom plates, each of which is provided with a plurality of beard steel bars, a joint groove is provided between the two beard steel bars, an anti-cracking and anti-seepage component is provided inside the joint groove, a plurality of truss steel bars are provided on the top of the two prefabricated bottom plates, the front and rear sides of the two prefabricated bottom plates are fixedly connected with concrete mounting blocks, a fixed plate is slidably connected between the two concrete mounting blocks, an outer shell is fixedly connected to the outer side of the fixed plate, a pull rod is slidably connected to the inner side of the outer shell, a baffle is fixedly connected to one side of the outer side of the pull rod, a spring is sleeved on the other side of the outer side of the pull rod, a latch rod is slidably connected to the left and right sides of the outer shell, a connecting plate is fixedly connected to the opposite side of the two beard steel bars, a connecting rod is provided between the connecting plate and the baffle, and a cast-in-place concrete composite layer is laid on the top of the beard steel bars.

[0006] As a further description of the above technical solution:

[0007] The anti-cracking and anti-seepage component includes a steel mesh, the exterior of which is arranged inside the joint groove, a polyethylene foam board is arranged on the top of the steel mesh, the joint groove is filled with a cast-in-place concrete laminated layer, and the cast-in-place concrete laminated layer is flush with the bottom surface of the prefabricated base plate.

[0008] As a further description of the above technical solution:

[0009] The side end of the pull rod is fixedly connected with a handle.

[0010] As a further description of the above technical solution:

[0011] The fixing plate is in contact with the joint groove, and the outer side of the baffle is slidably connected to the inside of the shell.

[0012] As a further description of the above technical solution:

[0013] One end of the spring is fixedly connected to the inner wall of the shell, and the other end of the spring is fixedly connected to the middle of the baffle.

[0014] As a further description of the above technical solution:

[0015] One end of the connecting rod is rotatably connected to a side of the connecting plate close to the pull rod, and the other end of the connecting rod is rotatably connected to the outer side of the baffle.

[0016] As a further description of the above technical solution:

[0017] The latch rod passes through the housing and is inserted into the concrete installation block.

[0018] As a further description of the above technical solution:

[0019] The beard steel bars are evenly distributed inside the prefabricated base plate.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the baffle plate is driven to move outward by pulling the pull rod, which in turn drives the connecting rod to pull the plug rod out of the concrete mounting block, thereby realizing the rapid disassembly of the fixed plate, effectively solving the slurry flow problem generated when the joint groove is filled with concrete mortar, and improving the construction quality and efficiency.

[0022] 2. In the utility model, the purpose of preventing cracking of the joints at the bottom of the composite board is achieved through the action of the steel mesh, and then the gap can be effectively sealed through the action of the polyethylene foam board to prevent the penetration of air, water vapor or moisture, thereby reducing the leakage of concrete mortar. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of a prefabricated composite panel joint structure proposed by the utility model;

[0024] Figure 2 A schematic diagram of the structure of a truss steel bar of a prefabricated composite plate joint structure proposed by the utility model;

[0025] Figure 3 A structural schematic diagram of a steel mesh for a prefabricated composite slab joint structure proposed by the utility model;

[0026] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 5 The utility model is a schematic structural diagram of a latch rod of a prefabricated composite plate joint structure.

[0028] Legend:

[0029] 1. Prefabricated base plate; 2. Beard steel bars; 3. Joint grooves; 4. Truss steel bars; 5. Cast-in-place concrete overlay layer; 6. Fixed plate; 7. Concrete mounting block; 8. Shell; 9. Pull rod; 10. Baffle; 11. Spring; 12. Latch rod; 13. Connecting plate; 14. Connecting rod; 15. Handle; 16. Steel mesh; 17. Polyethylene foam board. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: a prefabricated composite plate joint structure, including two prefabricated bottom plates 1, a plurality of beard steel bars 2 are arranged inside the two prefabricated bottom plates 1, a joint groove 3 is arranged between the two beard steel bars 2, and an anti-cracking and anti-seepage component is arranged inside the joint groove 3, a plurality of truss steel bars 4 are arranged on the top of the two prefabricated bottom plates 1, the front and rear sides of the two prefabricated bottom plates 1 are fixedly connected with concrete mounting blocks 7, a fixed plate 6 is slidably connected between the two concrete mounting blocks 7, the outer side of the fixed plate 6 is fixedly connected with a shell 8, a pull rod 9 is slidably connected inside the shell 8, a baffle 10 is fixedly connected to one side of the outer side of the pull rod 9, a spring 11 is sleeved on the other side of the outer side of the pull rod 9, and a latch rod is slidably connected to the left and right sides of the shell 8 12. Two opposite sides of the two beard steel bars 2 are fixedly connected with connecting plates 13, and a connecting rod 14 is arranged between the connecting plate 13 and the baffle 10. A cast-in-place concrete superposition layer 5 is laid on the top of the beard steel bars 2. A handle 15 is fixedly connected to the side end of the pull rod 9. The fixed plate 6 is abutted against the joint groove 3. The outer side of the baffle 10 is slidably connected to the inside of the shell 8. One end of the spring 11 is fixedly connected to the inner wall of the shell 8, and the other end of the spring 11 is fixedly connected to the middle of the baffle 10. One end of the connecting rod 14 is rotatably connected to the side of the connecting plate 13 close to the pull rod 9, and the other end of the connecting rod 14 is rotatably connected to the outside of the baffle 10. The latch rod 12 passes through the shell 8 and is inserted into the concrete mounting block 7. The beard steel bars 2 are equidistantly distributed inside the prefabricated base plate 1.

[0032] Specifically, the precast base plate 1, as the basic part of the composite slab, bears the main weight of the building and external loads. It is usually made of concrete and has high strength and stability. The beard steel bars 2 are mainly used to strengthen the connection between the composite slab and the cast-in-place concrete composite layer. The joint grooves 3 are used to ensure the tight connection between the two plates during the installation of the precast composite slab. The truss steel bars 4 are a skeleton composed of upper chord steel bars, lower chord steel bars and web steel bars. It enhances the rigidity and crack resistance of the precast base plate 1, so that it can better withstand external loads. Secondly, the truss steel bars 4 can also be used as lifting points and lifting rings during construction, which is convenient for construction workers to carry out lifting and installation operations. The cast-in-place concrete composite layer 5 is poured on site on the precast base plate 1. The concrete layer, together with the prefabricated base plate 1, constitutes a complete composite plate structure. The integrity and bearing capacity of the composite plate are ensured by the connection between the beard steel bars 2 and the steel mesh 16. The fixed plate 6 is used to prevent mortar flow when pouring mortar at the joints. The pull rod 9 is used to drive the movement of the baffle 10. The spring 9 provides the necessary elastic force during the removal and installation of the fixed plate 6 to ensure that the movement of the baffle 19 is smooth and accurate. The connecting rod 23 is used to connect the baffle 19 and the connecting plate 21. The movement of the baffle 10 drives the connecting rod 14 to pull the latch rod 12 or push the latch rod 12. The latch rod 12 is used to connect the connecting plate 13, and the concrete mounting block 7 is tightened or loosened under the action of the connecting rod 14. The connecting plate 13 is used to connect the connecting rod 14 and the latch rod 12. The handle 15 provides a grip for the worker.

[0033] Reference Figure 2 and Figure 3 The anti-cracking and anti-seepage component includes a steel mesh 16, the outside of the steel mesh 16 is arranged inside the joint groove 3, a polyethylene foam board 17 is arranged on the top of the steel mesh 16, and the joint groove 3 is filled with a cast-in-place concrete superposition layer 5, which is flush with the bottom surface of the prefabricated base plate 1.

[0034] Specifically, the steel mesh 16 is used to enhance the strength and stability of the cast-in-place concrete composite layer 5. It works together with the bearded steel bars 2 to ensure that the composite plate can maintain its integrity and stability when subjected to external loads. The polyethylene foam board 17 is mainly used to prevent mortar leakage at the joints, and it has good sealing and water resistance.

[0035] Working principle: When processing the prefabricated composite slab, firstly, the beard steel bars 2 and the truss steel bars 4 are tied on the composite slab steel mold, and then the concrete mortar is poured. After the pouring is completed, the steel mesh 16 is pressed into the center of the joint between the two slabs to resist cracking, and then a polyethylene foam board 17 is set on the top of the steel mesh 16 to prevent mortar leakage. In order to prevent the slurry from flowing when the concrete mortar is poured and filled in the joint groove 3, at this time, it is necessary to install the fixing plate 6, and the fixing plate 6 is pressed against the joint groove 3, and then the pull rod 9 is pushed inward to drive the baffle 10 to The spring 11 is moved step by step, so that the spring 11 is reset and the connecting plate 13 is driven to push the latch rod 12 to be inserted into the concrete mounting block 7 to complete the installation. At this time, the concrete mortar can be poured at the joint. After the mortar at the joint solidifies, the fixing plate 6 needs to be removed. The handle 15 is pulled outward to drive the pull rod 9 and the baffle 10 to move outward and squeeze the spring 11. Due to the hinge connection between the baffle 10 and the connecting rod 14, the latch rod 12 is driven to slide into the shell 8 until the latch rod 12 is completely out of the concrete mounting block 7 to complete the disassembly.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A prefabricated composite panel joint structure, comprising two prefabricated bottom panels (1), characterized in that: A plurality of beard steel bars (2) are arranged inside the two prefabricated bottom plates (1), a joint groove (3) is arranged between the two beard steel bars (2), an anti-cracking and anti-seepage component is arranged inside the joint groove (3), a plurality of truss steel bars (4) are arranged on the top of the two prefabricated bottom plates (1), a concrete mounting block (7) is fixedly connected to the front and rear sides of the two prefabricated bottom plates (1), a fixing plate (6) is slidably connected between the two concrete mounting blocks (7), and a shell (8) is fixedly connected to the outer side of the fixing plate (6) A pull rod (9) is slidably connected inside the shell (8), a baffle (10) is fixedly connected to one side of the outside of the pull rod (9), a spring (11) is sleeved on the other side of the outside of the pull rod (9), a latch rod (12) is slidably connected to the left and right sides of the shell (8), a connecting plate (13) is fixedly connected to the opposite sides of the two beard steel bars (2), a connecting rod (14) is arranged between the connecting plate (13) and the baffle (10), and a cast-in-place concrete laminate layer (5) is laid on the top of the beard steel bars (2).

2. The prefabricated composite panel joint structure according to claim 1, characterized in that: The anti-cracking and anti-seepage component comprises a steel mesh (16), the exterior of the steel mesh (16) is arranged inside the joint groove (3), a polyethylene foam board (17) is arranged on the top of the steel mesh (16), the interior of the joint groove (3) is filled with a cast-in-place concrete superposition layer (5), and the cast-in-place concrete superposition layer (5) is flush with the bottom surface of the prefabricated base plate (1).

3. The prefabricated composite panel joint structure according to claim 1, characterized in that: A handle (15) is fixedly connected to the side end of the pull rod (9).

4. The prefabricated composite panel joint structure according to claim 1, characterized in that: The fixing plate (6) is in contact with the joint groove (3), and the outer side of the baffle (10) is slidably connected to the inside of the outer shell (8).

5. The prefabricated composite panel joint structure according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the inner wall of the outer shell (8), and the other end of the spring (11) is fixedly connected to the middle of the baffle (10).

6. The prefabricated composite panel joint structure according to claim 1, characterized in that: One end of the connecting rod (14) is rotatably connected to a side of the connecting plate (13) close to the pull rod (9), and the other end of the connecting rod (14) is rotatably connected to the outside of the baffle (10).

7. The prefabricated composite panel joint structure according to claim 1, characterized in that: The latch rod (12) passes through the housing (8) and is inserted into the interior of the concrete mounting block (7).

8. The prefabricated composite panel joint structure according to claim 1, characterized in that: The beard steel bars (2) are evenly distributed inside the prefabricated base plate (1).

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