Fabricated ribbed composite slab structure

Abstract

The application discloses an assembled ribbed laminated slab structure and belongs to the technical field of buildings. The assembled ribbed laminated slab structure comprises a first laminated slab body, and a second laminated slab body is arranged on one side of the first laminated slab body. In the application, the outer concrete grouting assembly is used for grouting into the inside of the second grouting hole and the second grouting groove. When the concrete mortar in the inside of the second grouting groove reaches saturation, the concrete mortar flows out to the outside through the overflow hole, so that the grouting state can be observed by the staff, the undergrouting and leakage grouting phenomena are prevented, and the first laminated slab body and the second laminated slab body are firmly connected together through the concrete mortar after a period of standing and the concrete mortar hardens and solidifies, so that the fixing block and the inserted rib are wrapped in the inside of the second grouting groove. Thus, the formwork supporting, maintenance and formwork dismantling time is reduced, the labor intensity and cost of the staff are reduced, the assembling efficiency of the first laminated slab body and the second laminated slab body is improved, and the economic benefit of the enterprise is improved.

Description

Technical Field

[0001] This invention belongs to the field of building technology, and in particular relates to a prefabricated ribbed composite slab structure. Background Technology

[0002] Prefabricated concrete structures have advantages such as fast construction speed, energy saving and environmental protection, and less on-site wet work. They are now widely used in public buildings such as shopping malls, exhibition centers, parking lots, and teaching buildings, as well as large-span residential buildings. In the construction of prefabricated buildings, it is a construction process in which prefabricated beams, slabs, columns and walls are transported to the construction site for assembly. As an important part of prefabricated buildings, ribbed composite slab prefabricated components have a particularly large impact on the assembly rate. Composite slabs are prefabricated monolithic floor slabs made by stacking prefabricated slabs and cast-in-place reinforced concrete layers. Composite slabs have good integrity, and the upper and lower surfaces of the slabs are flat, which facilitates the finishing layer decoration. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity.

[0003] The Chinese Patent Website has published (CN112663847B). This invention provides a ribbed composite slab with added crescent ribs and its construction method, addressing the problem of shear failure caused by excessive shear force in existing composite slabs. In the ribbed composite slab with added crescent ribs, the transverse reinforcing bars are perpendicular to the splice edge, and steel connectors are welded at the splice edge. Simultaneously, a crescent-shaped groove is present on the side of the rib plate at the current splice edge, with the lower edge of the groove tangent to the steel connector. After on-site casting, the splice edges of the two precast ribbed base plates are aligned, and the corresponding steel connectors are welded together. The two crescent-shaped grooves form a near-circular structure that interlocks with the cast-in-place concrete. This invention adds transverse reinforcement connections between different precast slabs and the same beam in the composite slab, achieving bidirectional force transfer. The crescent ribs fully interlock with the cast-in-place concrete, increasing the integrity of the cast-in-place layer and the precast base plate, and also increasing the integrity between slabs, further improving the shear resistance and bidirectional bending performance of the composite slab.

[0004] However, in the existing ribbed composite slab structure, the two adjacent composite slabs are generally overlapped and poured with concrete during construction. Before pouring, workers need to set up multiple formworks in advance, which not only increases the economic and labor costs of enterprises, but also prolongs the construction period. Moreover, after the concrete has cured and formed, workers need to remove the formwork. The construction process is relatively complicated and needs to be improved. Summary of the Invention

[0005] The purpose of this invention is to address the problems of existing ribbed composite slab structures, where concrete is typically used to overlap and pour between two adjacent composite slabs during construction. This requires workers to erect multiple formworks before pouring, which increases the company's economic and labor costs, extends the construction period, and necessitates the removal of the formworks after the concrete has cured, making the construction process quite cumbersome. Therefore, this invention proposes a prefabricated ribbed composite slab structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A prefabricated ribbed composite slab structure includes a first composite slab body, a second composite slab body disposed on one side of the first composite slab body, a first connecting end disposed on one side of both the first and second composite slab bodies, and a second connecting end disposed on the other side of both the first and second composite slab bodies. A second grouting groove is disposed inside the first connecting end, a fixing block is disposed inside the second grouting groove, and a plurality of insert bars are disposed on the other side of the fixing block. The insert bars and the fixing block are slidably disposed inside the second grouting groove.

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

[0009] A rectangular groove is provided on the top side of both the first connecting end and the second connecting end, and a waterproof asphalt layer is provided inside the rectangular groove.

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

[0011] Both sides of the second grouting groove are connected to overflow holes, and a rectangular sealing groove is provided on one side of the second grouting groove.

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

[0013] A rectangular sealing gasket is provided on the other side of the rectangular sealing groove, and the other side of the rectangular sealing gasket is fixedly connected to the second connecting end.

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

[0015] The second connecting end is provided with a plurality of second grouting holes, and the first connecting end is provided with a plurality of first grouting holes, with the first grouting holes located below the second grouting holes.

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

[0017] The internal structures of the first composite plate body and the second composite plate body are connected. The first composite plate body includes a bottom plate, and the top of the bottom plate is provided with multiple ribs.

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

[0019] The rib plate has multiple reserved reinforcing bar holes inside, and reinforcing bars are installed inside the reserved reinforcing bar holes. A concrete layer is installed on the reinforcing bars, the bottom plate, and the rib plate.

[0020] As a further description of the above technical solution:

[0021] The top of the rib is provided with a lifting ring, which extends vertically upwards outwards from the outside of the concrete layer.

[0022] As a further description of the above technical solution:

[0023] A grouting channel is provided on one side of the rib, and a first grouting groove is connected to one side of the grouting channel.

[0024] As a further description of the above technical solution:

[0025] The first grouting groove is located inside the rib plate and is connected to the reserved reinforcement hole.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, the first connecting end on one side of the first composite slab body and the second connecting end on one side of the second composite slab body are first connected together by an external lifting device. At this time, the fixing block and the reinforcing bar on the second connecting end will be inserted into the interior of the second grouting groove. Then, grouting is performed into the interior of the second grouting hole and the first grouting hole by an external concrete grouting component. The concrete mortar will enter the interior of the second grouting groove under the action of gravity. When the concrete mortar hardens and solidifies, it will wrap the fixing block and the reinforcing bar inside the interior of the second grouting groove. At this time, the first composite slab body and the second composite slab body will be firmly connected together by the concrete mortar, thereby reducing the time for formwork, curing and demolding. The structure is stable and the assembly is quick. It not only reduces the labor intensity and cost of workers, but also improves the assembly efficiency of the first composite slab body and the second composite slab body, thereby improving the economic benefits of the enterprise.

[0028] 2. In this invention, during the manufacturing of the first composite slab body and the second composite slab body, the external concrete grouting component delivers concrete mortar to the interior of the first grouting groove through a reserved grouting channel, filling the first grouting groove and the reserved reinforcement holes with concrete mortar. After the mortar hardens and solidifies, it firmly wraps the reinforcement inside the first grouting groove. By filling the space inside the rib with concrete mortar, a stable and reliable concrete layer is formed, preventing the concrete mortar from only contacting the side of the rib during pouring and failing to fully penetrate into the reserved reinforcement holes inside the rib. This would result in insufficient or incomplete grouting in the reserved reinforcement holes, leading to lower strength of the first composite slab body and the second composite slab body, thus affecting the quality of use of the first composite slab body and the second composite slab body.

[0029] 3. In this invention, when the concrete mortar inside the second grouting tank reaches saturation, the concrete mortar will flow out to the outside through the overflow hole, which makes it convenient for the staff to stop the grouting work in time. At the same time, it is convenient for the staff to observe the grouting status, prevent under-grouting and leakage, and thus prevent the assembly strength of the first composite slab body and the second composite slab body from being affected.

[0030] 4. In this invention, the waterproof asphalt layer prevents water from entering the joint between the first and second connecting ends, enhancing the waterproof performance of the joint and preventing water from entering the interior of the first and second connecting ends after long-term use, thus affecting their strength and stability. Grouting is carried out into the interior of multiple second grouting holes through the external concrete grouting component, which facilitates the improvement of grouting efficiency at the joint between the first and second connecting ends, thereby helping to reduce the assembly time of the first composite plate body and the second composite plate body. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the assembled ribbed composite plate structure proposed in this invention.

[0032] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the first composite plate body in the prefabricated ribbed composite plate structure proposed in this invention.

[0033] Figure 3 In the prefabricated ribbed composite plate structure proposed in this invention Figure 2 A magnified schematic diagram of the structure at point A;

[0034] Figure 4 This is a schematic diagram of the internal structure of the first composite plate body in a prefabricated ribbed composite plate structure proposed in this invention.

[0035] Figure 5This is a schematic diagram of the internal structure of the rib plate in an assembled ribbed composite plate structure proposed in this invention.

[0036] Figure 6 This is a schematic diagram of the internal structure of the first connecting end in an assembled ribbed composite plate structure proposed in this invention.

[0037] Legend:

[0038] 1. First composite slab body; 101. Base plate; 102. Rib plate; 103. Reserved through-reinforcement hole; 104. Grouting channel; 105. First grouting groove; 106. Concrete layer; 107. Lifting ring; 2. Second composite slab body; 3. Reinforcing bar; 4. First connecting end; 5. Second connecting end; 6. Rectangular groove; 7. Waterproof asphalt layer; 8. Second grouting groove; 9. Fixing block; 10. Inserted reinforcement bar; 11. Rectangular sealing groove; 12. Rectangular sealing gasket; 13. First grouting hole; 14. Second grouting hole; 15. Overflow hole. Detailed Implementation

[0039] 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 some embodiments of the present invention, and not all embodiments. 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.

[0040] Please see Figure 1-6 The present invention provides a technical solution: an assembled ribbed composite slab structure, including a first composite slab body 1, a second composite slab body 2 disposed on one side of the first composite slab body 1, a first connecting end 4 disposed on one side of both the first composite slab body 1 and the second composite slab body 2, a second connecting end 5 disposed on the other side of both the first composite slab body 1 and the second composite slab body 2, a second grouting groove 8 disposed inside the first connecting end 4, a fixing block 9 disposed inside the second grouting groove 8, and a plurality of insert ribs 10 disposed on the other side of the fixing block 9, the insert ribs 10 and the fixing block 9 being slidably disposed inside the second grouting groove 8.

[0041] The specific implementation method is as follows: The external lifting connector is secured to the lifting ring 107. At this time, the first composite slab body 1 and the second composite slab body 2 are lifted using the external lifting device. First, the first connecting end 4 on one side of the first composite slab body 1 and the second connecting end 5 on one side of the second composite slab body 2 are joined together. At this time, the fixing block 9 and the insert rib 10 on the second connecting end 5 are inserted into the interior of the second grouting groove 8. Then, grout is injected into the interior of the second grouting hole 14 through the external concrete grouting assembly. Under the action of gravity, the concrete mortar enters the interior of the second grouting groove 8 through the first grouting hole 13. The concrete mortar on one side of the interior of the second grouting groove 8 is sealed inside the second grouting groove 8 by the obstruction of the rectangular sealing gasket 12, preventing the concrete mortar inside the second grouting groove 8 from flowing out from the joint between the first connecting end 4 and the second connecting end 5. When the concrete mortar inside the second grouting groove 8 reaches saturation, it will flow out through the overflow hole 15 to the outside, allowing workers to stop grouting work in a timely manner. This also allows workers to observe the grouting status and prevent under-grouting or leakage, thus preventing any impact on the assembly strength of the first composite slab body 1 and the second composite slab body 2, thereby preventing safety hazards. After the concrete mortar has been left to stand for a period of time, it will harden and solidify, encasing the fixing block 9 and the reinforcing bar 10 inside the second grouting groove 8. At this point, the first composite slab body 1 and the second composite slab body 2 will be firmly connected together by the concrete mortar, thereby reducing the time for formwork, curing, and demolding. This not only reduces the labor intensity and cost for workers but also improves the assembly efficiency of the first composite slab body 1 and the second composite slab body 2, thus improving the economic benefits of the enterprise.

[0042] A rectangular groove 6 is provided on the top side of both the first connecting end 4 and the second connecting end 5. A waterproof asphalt layer 7 is provided inside the rectangular groove 6. Both sides of the second grouting groove 8 are connected to overflow holes 15. A rectangular sealing groove 11 is provided on one side of the second grouting groove 8. A rectangular sealing gasket 12 is provided on the other side of the rectangular sealing groove 11. The other side of the rectangular sealing gasket 12 is fixedly connected to the second connecting end 5. A plurality of second grouting holes 14 are provided on the second connecting end 5. A plurality of first grouting holes 13 are provided on the first connecting end 4. The first grouting holes 13 are located below the second grouting holes 14.

[0043] The specific implementation method is as follows: the waterproof asphalt layer 7 prevents water from entering the joint between the first connecting end 4 and the second connecting end 5, thereby enhancing the waterproof performance of the joint and preventing water from entering the interior of the first connecting end 4 and the second connecting end 5 after long-term use, which would affect their strength and stability. Grouting is carried out into the interior of multiple second grouting holes 14 through the external concrete grouting component, which facilitates the improvement of the grouting efficiency at the joint between the first connecting end 4 and the second connecting end 5, thereby helping to reduce the assembly time of the first composite plate body 1 and the second composite plate body 2.

[0044] The internal structures of the first composite slab body 1 and the second composite slab body 2 are connected. The first composite slab body 1 includes a base plate 101. A plurality of ribs 102 are provided on the top of the base plate 101. The ribs 102 and the base plate 101 are integrally formed. A plurality of reserved reinforcing bar holes 103 are provided inside the ribs 102. Reinforcing bars 3 are provided inside the reserved reinforcing bar holes 103. A concrete layer 106 is provided on the reinforcing bars 3, the base plate 101 and the ribs 102. A lifting ring 107 is provided on the top of the ribs 102 and extends vertically upward to the outside of the concrete layer 106. A grouting channel 104 is provided on one side of the ribs 102. A first grouting groove 105 is connected to one side of the grouting channel 104. The first grouting groove 105 is located inside the ribs 102 and is connected to the reserved reinforcing bar holes 103.

[0045] The specific implementation method is as follows: During the processing and manufacturing of the first composite slab body 1 and the second composite slab body 2, the external concrete grouting component delivers concrete mortar to the interior of the first grouting groove 105 through the reserved grouting channel 104. At this time, the first grouting groove 105 comes into contact with the concrete mortar on both sides of the reserved reinforcement hole 103, so that the concrete mortar fills the interior of the first grouting groove 105 and the reserved reinforcement hole 103. After the mortar hardens and solidifies, it will firmly wrap the reinforcing bar 3 inside the first grouting groove 105, and the rib plate 102 will be securely wrapped inside the first grouting groove 105. The internal space is filled with concrete mortar to form a stable and reliable concrete layer 106. This prevents the concrete mortar from not penetrating into the interior of the rib plate 102. During pouring, the mortar only contacts the side of the rib plate 102 and does not embed itself into the reserved reinforcement holes 103. This results in insufficient or incomplete grouting in the reserved reinforcement holes 103, which in turn leads to lower strength of the first composite slab body 1 and the second composite slab body 2, thus affecting the quality of use of the first composite slab body 1 and the second composite slab body 2.

[0046] Working principle: In use, the external lifting connector is placed on the lifting ring 107. At this time, the first composite plate body 1 and the second composite plate body 2 are lifted by the external lifting device. First, the first connecting end 4 on one side of the first composite plate body 1 and the second connecting end 5 on one side of the second composite plate body 2 are connected together. At this time, the fixing block 9 and the insert rib 10 on the second connecting end 5 will be inserted into the interior of the second grouting groove 8. Then, grouting is performed into the interior of the second grouting hole 14 through the external concrete grouting assembly. Under the action of gravity, the concrete mortar will enter the interior of the second grouting groove 8 through the first grouting hole 13. The concrete mortar on one side of the interior of the second grouting groove 8 will be sealed inside the second grouting groove 8 by the obstruction of the rectangular sealing gasket 12, preventing the concrete mortar inside the second grouting groove 8 from flowing out from the joint between the first connecting end 4 and the second connecting end 5. When the concrete mortar inside the second grouting groove 8 reaches saturation, it will flow out to the outside through the overflow hole 15. Then, the concrete mortar will be left to stand for a period of time. After the concrete mortar hardens and solidifies, it will wrap the fixing block 9 and the reinforcing bar 10 inside the second grouting groove 8. At this time, the first composite slab body 1 and the second composite slab body 2 will be firmly connected together by the concrete mortar, thereby reducing the time for formwork, curing and demolding, thus improving the economic benefits of the enterprise. The waterproof asphalt layer 7 prevents water from entering the joint between the first connecting end 4 and the second connecting end 5, enhancing the waterproof performance of the joint. Grouting is carried out into the interior of multiple second grouting holes 14 through the external concrete grouting components, which facilitates the improvement of the grouting efficiency at the joint between the first connecting end 4 and the second connecting end 5, thereby helping to reduce the assembly time of the first composite slab body 1 and the second composite slab body 2.

[0047] During the manufacturing of the first composite slab body 1 and the second composite slab body 2, the external concrete grouting component delivers concrete mortar to the interior of the first grouting groove 105 through the reserved grouting channel 104. At this time, the first grouting groove 105 comes into contact with the concrete mortar on both sides of the reserved reinforcement hole 103, so that the concrete mortar fills the interior of the first grouting groove 105 and the reserved reinforcement hole 103. After the mortar hardens and solidifies, it will firmly wrap the reinforcement 3 inside the first grouting groove 105, and fill the space inside the rib 102 with concrete mortar to form a stable and reliable concrete layer 106, preventing the concrete mortar from not penetrating into the interior of the rib 102. During pouring, it only contacts the side of the rib 102 and cannot completely penetrate into the reserved reinforcement hole 103 inside the rib 102.

[0048] 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 equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated ribbed composite plate structure, comprising a first composite plate body (1), characterized in that, A second composite plate body (2) is provided on one side of the first composite plate body (1). A first connecting end (4) is provided on one side of both the first composite plate body (1) and the second composite plate body (2). A second connecting end (5) is provided on the other side of both the first composite plate body (1) and the second composite plate body (2). A second grouting groove (8) is provided inside the first connecting end (4). A fixing block (9) is provided inside the second grouting groove (8). A plurality of insert bars (10) are provided on the other side of the fixing block (9). The insert bars (10) and the fixing block (9) are slidably disposed inside the second grouting groove (8). Both sides of the second grouting groove (8) are connected to overflow holes (15). A rectangular sealing groove (11) is provided on one side of the second grouting groove (8). The internal structures of the first composite plate body (1) and the second composite plate body (2) are interconnected. The first composite slab body (1) includes a base plate (101). The top of the base plate (101) is provided with a plurality of ribs (102). The interior of the ribs (102) is provided with a plurality of reserved reinforcing bar holes (103). The interior of the reserved reinforcing bar holes (103) is provided with reinforcing bars (3). The reinforcing bars (3), the base plate (101) and the ribs (102) are provided with a concrete layer (106). The top of the ribs (102) is provided with a lifting ring (107), and the lifting ring (107) extends vertically upward to the outside of the concrete layer (106). A grouting channel (104) is provided on one side of the ribs (102). The side of the grouting channel (104) is connected to a first grouting groove (105). The first grouting groove (105) is located inside the ribs (102) and is connected to the reserved reinforcing bar holes (103).

2. The prefabricated ribbed composite plate structure according to claim 1, characterized in that, A rectangular groove (6) is provided on one side of the top of the first connecting end (4) and the second connecting end (5), and a waterproof asphalt layer (7) is provided inside the rectangular groove (6).

3. The prefabricated ribbed composite plate structure according to claim 1, characterized in that, A rectangular sealing gasket (12) is provided on the other side of the rectangular sealing groove (11), and the other side of the rectangular sealing gasket (12) is fixedly connected to the second connecting end (5).

4. The prefabricated ribbed composite plate structure according to claim 3, characterized in that, The second connecting end (5) is provided with a plurality of second grouting holes (14), and the first connecting end (4) is provided with a plurality of first grouting holes (13), and the first grouting holes (13) are located below the second grouting holes (14).

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