A laminated board structure having enhanced interfacial bonding properties

Abstract

This invention discloses a composite plate structure that enhances interfacial bonding performance, belonging to the field of composite plate processing technology. It includes a composite base plate and a composite top plate, with the top plate positioned at the top of the base plate. A reinforcing mechanism is provided between the top and base plates. The reinforcing mechanism includes a top reinforcing rib embedded at the bottom of the top plate, and multiple bottom reinforcing ribs embedded at the top of the base plate. Multiple connecting mechanisms are provided inside the top plate, each including a threaded cylinder fixedly installed inside the top reinforcing rib. This invention utilizes the elasticity of a first spring to tightly insert a triangular plate into a groove in the base plate. A supplementary block assembly further compresses the triangular plate for secondary tightening. Simultaneously, expanding foam adhesive released by an auxiliary rubber ball fills the gap between the triangular plate and the groove, forming a dual fixing structure of "mechanical anchoring + foam adhesive sealing." This significantly enhances the connection strength between the top and base plates, improving the overall structural load-bearing stability.

Description

Technical Field

[0001] This invention relates to the field of laminated board processing technology, and in particular to a laminated board structure that enhances interfacial bonding performance. Background Technology

[0002] With the rapid development of the prefabricated building industry, composite slabs, as the core horizontal load-bearing component in prefabricated concrete structures, have been widely used in various engineering scenarios such as residential buildings, factories, and public buildings due to their advantages of high industrial production efficiency, convenient construction, energy saving, and emission reduction. They have become one of the key components driving the industrialization and green development of the building industry. Composite slabs are usually composed of a prefabricated composite base slab and a cast-in-place composite top slab. Their overall mechanical properties, seismic performance, and durability depend primarily on the quality of the interface bonding between the composite base slab and the composite top slab. The strength of the interface bonding directly determines whether the composite slab can achieve coordinated load-bearing, thus affecting the safety and stability of the entire building structure.

[0003] Currently, the interface connection of existing composite slabs mostly adopts simple methods such as rebar lap splicing, surface roughening, or bonding with a single interface agent. Although these methods can achieve the connection between the two layers of slabs to a certain extent, in actual engineering applications, the existing connection methods mostly rely on the friction between concrete and rebar or simple mechanical interlocking. Under the influence of vertical loads, horizontal shear forces, seismic action, or temperature shrinkage deformation, phenomena such as debonding, slippage, and cracking of the overlapping surface are very likely to occur. This results in the two layers of slabs being unable to cooperate in bearing the load, significantly reducing the bending and shear bearing capacity of the composite slab, and even causing structural safety hazards. Summary of the Invention

[0004] The purpose of this invention is to provide a composite slab structure with enhanced interfacial bonding performance, in order to solve the problem mentioned in the background art that under the influence of vertical loads, horizontal shear forces, seismic action, or temperature shrinkage deformation, phenomena such as debonding, slippage, and cracking of the composite surface are prone to occur, resulting in the two layers of the slab being unable to cooperate in bearing the force, and significantly reducing the bending and shear bearing capacity of the composite slab.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a composite plate structure for enhancing interface bonding performance, comprising a composite bottom plate and a composite top plate, wherein the composite top plate is disposed at the top of the composite bottom plate, a reinforcing mechanism is provided between the composite top plate and the composite bottom plate, the reinforcing mechanism includes a top reinforcing rib embedded at the bottom end of the composite top plate, a plurality of bottom reinforcing ribs are embedded at the top end of the composite bottom plate, a plurality of connecting mechanisms are provided inside the composite top plate, the connecting mechanism includes a threaded cylinder fixedly installed inside the top reinforcing rib, a plurality of triangular plates are provided at the bottom end of the threaded cylinder, and a first spring is fixedly installed on the surface of the triangular plates near the surface of the threaded cylinder, a groove is opened at the top end of the composite bottom plate, the triangular plates are inserted into the groove of the composite bottom plate, a screw is threadedly installed inside the threaded cylinder, a supplementary block assembly is fixedly installed at the free end of the screw, and the supplementary block assembly is located between the plurality of triangular plates.

[0006] As a preferred embodiment of the present invention, the supplementary block assembly includes a top ball threadedly mounted on the free end of a screw. A movable plate is rotatably mounted on one end of the screw located at the top of the top ball, and a second spring is fixedly mounted between the movable plate and the top ball. A liquid outlet plate with a leakage hole is fixedly mounted on the bottom end of the top ball. An auxiliary rubber ball containing expanding foam adhesive is fixedly mounted on the surface of the liquid outlet plate near the movable plate. The outer shell of the auxiliary rubber ball is made of brittle resin material, and the expanding foam adhesive is used to fix the triangular plate inserted into the stacked base plate with foam adhesive.

[0007] As a preferred embodiment of the present invention, a stabilizing component is provided between the top reinforcing rib and the bottom reinforcing rib. The stabilizing component includes a corrugated reinforcing plate disposed between the top reinforcing rib and the bottom reinforcing rib, and the reinforcing plate is used to increase the overall bending stiffness between the top reinforcing rib and the bottom reinforcing rib and reduce the overall structural deflection.

[0008] As a preferred embodiment of the present invention, the outer surface of the reinforcing plate is provided with a friction plate with concave holes, the outer surface of the friction plate is provided with a plurality of pointed cones for increasing stability, a plurality of rubber blocks are provided between the reinforcing plate and the friction plate, and an air hole is provided between every two rubber blocks.

[0009] As a preferred embodiment of the present invention, a buffer steel ring is embedded at the top of the composite base plate to reduce the impact of the triangular plate being installed with the composite base plate, and the triangular plate is located at the center of the buffer steel ring.

[0010] As a preferred embodiment of the present invention, a positioning mechanism is provided at the top of the composite base plate. The positioning mechanism includes a plurality of support cylinders fixedly installed at the top of the composite base plate. A fixing frame is fixedly installed at the top of the support cylinders. A positioning ball for positioning the composite top plate is rotatably installed on the surface of the fixing frame. A circular groove is opened at the bottom of the composite top plate, and the positioning ball rotates inside the circular groove.

[0011] As a preferred embodiment of the present invention, limiting pads are fixedly installed on the surfaces of the overlapping bottom plate and the overlapping top plate that are close to each other, and an elastic gas cylinder for collecting gas is fixedly installed on the side wall of the support cylinder. Suction cups are connected to both ends of the elastic gas cylinder, and the two suction cups are respectively adsorbed on the surfaces of the two limiting pads.

[0012] As a preferred embodiment of the present invention, an oil cavity is provided inside the top reinforcing rib near the support cylinder, and the oil cavity is connected to the surface of the screw through multiple oil outlet holes. A piston is provided inside the oil cavity, and a third spring is fixedly installed between the piston and the inner wall of the oil cavity.

[0013] As a preferred embodiment of the present invention, a connecting mechanism is provided on both sides of the composite bottom plate and the composite top plate. The connecting mechanism includes a plurality of steel bars pre-embedded and installed on both sides of the composite bottom plate and the composite top plate. A bushing is snapped onto the surface of the composite bottom plate and the composite top plate near the steel bars, and a trumpet-shaped clamping plate for stabilizing the deformation of the steel bars is provided on the outside of the bushing.

[0014] As a preferred embodiment of the present invention, shear plates are installed on the surfaces of the composite bottom plate and the composite top plate that are close to each other, multiple hooks are pre-embedded on both sides of the composite bottom plate and the composite top plate, and multiple angle steels are pre-embedded on the top of the composite bottom plate and the composite top plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes the cooperation of a threaded cylinder, screw, and triangular plate, along with the elasticity of a first spring to tightly insert the triangular plate into the groove of the composite base plate. A supplementary block assembly further tightens the triangular plate by pressing it, while expanding foam adhesive released by an auxiliary rubber ball fills the gap between the triangular plate and the groove, forming a dual-fixing structure of "mechanical anchoring + foam adhesive sealing." Furthermore, the shear resistance of the superimposed shear plate significantly enhances the connection strength between the composite top and bottom plates, preventing interface debonding and slippage under load, temperature deformation, or seismic action. This ensures that the two plates work together to bear the load, improving the overall structural load-bearing stability.

[0016] 2. This invention achieves an effective and stable connection through top and bottom reinforcing ribs. The corrugated reinforcing plate can significantly increase the overall bending stiffness between the two, reduce structural deflection, and avoid local stress concentration. The pointed cones and concave holes on the surface of the friction plate can increase the frictional resistance with concrete. The rubber blocks and air holes can buffer the impact of the force and absorb vibration energy, synergistically improving the bending, shear, and seismic performance of the composite slab and extending the service life of the structure.

[0017] 3. This invention, through the cooperation of the support cylinder, the fixing frame, and the positioning ball, can quickly achieve precise positioning of the stacked top plate and the stacked bottom plate, avoiding offset and misalignment during assembly. Furthermore, the rotational characteristics of the positioning ball within the circular groove can accommodate minor adjustments to the plate body, further ensuring positioning accuracy. The cooperation of the elastic air cylinder and the suction cup can adsorb and fix the limiting pad, assisting in fixing the plate position. At the same time, the buffer steel ring can reduce the impact on the stacked bottom plate during the installation of the triangular plate, avoiding concrete damage and improving construction convenience and quality.

[0018] 4. This invention, through the cooperation of the oil chamber, piston, and third spring, can deliver lubricating oil to the screw surface through the oil outlet, reducing wear on the threaded connection, preventing the screw from loosening, and also providing corrosion protection. In the connection mechanism, the trumpet-shaped clamping plate can stabilize the deformation of the reinforcing steel, and the bushing protects the reinforcing steel to prevent it from rusting or deforming under stress. The pre-embedded hooks and angle steel further enhance the structural strength of the plate edge, reduce the intrusion of moisture and corrosive media, and delay the corrosion of the reinforcing steel and the deterioration of the concrete.

[0019] 5. This invention integrates positioning, reinforcement, sealing, and corrosion protection functions into one unit through a composite plate structure. The various mechanisms work together to solve the pain points of existing composite plates, such as weak interface bonding, inaccurate positioning, and poor reinforcement effect. It also eliminates the need for complex construction equipment and processes. At the same time, the overall structure is compact and does not require additional plate thickness, which can effectively control the structure's self-weight and adapt to various prefabricated building scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the composite base plate structure of the present invention; Figure 3 This is a schematic diagram of the reinforcement mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the stabilizing component of the present invention; Figure 5 This is a schematic diagram of the positioning ball structure of the present invention; Figure 6 This is a schematic diagram of the buffer steel ring structure of the present invention; Figure 7 This is a schematic diagram of the structure of the supplementary component of the present invention; Figure 8 This is a schematic diagram of the internal structure of the top ball of the present invention; Figure 9 This is a schematic diagram of the connecting mechanism of the present invention.

[0021] In the diagram: 1. Shear plate; 2. Composite bottom plate; 3. Composite top plate; 4. Positioning mechanism; 41. Positioning ball; 42. Fixing frame; 43. Support cylinder; 44. Elastic air cylinder; 45. Suction cup; 46. Limiting pad; 5. Reinforcing mechanism; 51. Top reinforcing rib; 52. Bottom reinforcing rib; 53. Stabilizing component; 531. Reinforcing plate; 532. Rubber block; 533. Air hole; 534. Friction plate; 535. Cone; 6. Connecting mechanism 61. Screw; 62. Threaded cylinder; 63. First spring; 64. Triangular plate; 65. Buffer steel ring; 66. Supplementary block assembly; 661. Second spring; 662. Moving plate; 663. Auxiliary rubber ball; 664. Top ball; 665. Liquid outlet plate; 67. Oil outlet hole; 68. Piston; 69. Third spring; 610. Oil chamber; 7. Hook; 8. Connecting mechanism; 81. Clamping plate; 82. Bushing; 83. Reinforcing steel; 9. Angle steel. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-8 This invention provides a composite plate structure for enhancing interface bonding performance, comprising a composite base plate 2 and a composite top plate 3. The composite top plate 3 is disposed at the top of the composite base plate 2, and a reinforcing mechanism 5 is provided between the composite top plate 3 and the composite base plate 2. The reinforcing mechanism 5 includes a top reinforcing rib 51 embedded at the bottom end of the composite top plate 3, and multiple bottom reinforcing ribs 52 embedded at the top end of the composite base plate 2. Multiple bonding mechanisms 6 are provided inside the composite top plate 3, and each bonding mechanism 6 includes a threaded cylinder 62 fixedly installed inside the top reinforcing rib 51. Multiple triangular plates 64 are provided at the bottom end of the threaded cylinder 62, and a first spring 63 is fixedly installed on the surface of the triangular plates 64 near the surface of the threaded cylinder 62. A groove is formed at the top end of the composite base plate 2, and the triangular plates 64 are inserted into the groove of the composite base plate 2. A screw 61 is threaded inside the threaded cylinder 62, and a supplementary block assembly 66 is fixedly installed at the free end of the screw 61, and the supplementary block assembly 66 is located between the multiple triangular plates 64.

[0024] In this process, the top plate 3 is hoisted to the top of the bottom plate 2, aligning the connecting mechanism 6 with the groove of the bottom plate 2. At this time, the triangular plate 64 at the bottom of the threaded cylinder 62 in the connecting mechanism 6 is in a contracted state under the elastic support of the first spring 63, facilitating the smooth insertion of the triangular plate 64 into the groove of the bottom plate 2, thus achieving the initial positioning and mechanical anchoring of the top plate 3 and the bottom plate 2. After the initial anchoring is completed, the screw 61 inside the threaded cylinder 62 is rotated by a tool. The screw 61 moves downward along the internal thread of the threaded cylinder 62, causing the supplementary block assembly 66 at its free end to move downward synchronously. During the movement of the supplementary block assembly 66, it continuously compresses the surrounding triangular plates 64, causing the triangular plates 64 to overcome the elastic force of the first spring 63 and open outward until the outer surface of the triangular plate 64 is tightly attached to the inner wall of the groove of the bottom plate 2, completing the secondary fastening and ensuring that the two plates can work together to bear the load during subsequent stress, thus improving the interface bonding performance.

[0025] In some embodiments, the supplementary block assembly 66 includes a top ball 664 threadedly mounted on the free end of a screw 61. A movable plate 662 is rotatably mounted on one end of the screw 61 located at the top of the top ball 664, and a second spring 661 is fixedly mounted between the movable plate 662 and the top ball 664. A liquid outlet plate 665 with a leakage hole is fixedly mounted on the bottom end of the top ball 664. An auxiliary rubber ball 663 containing expanding foam adhesive is fixedly mounted on the surface of the liquid outlet plate 665 near the movable plate 662. The outer shell of the auxiliary rubber ball 663 is made of a brittle resin material, and the expanding foam adhesive is used to fix the triangular plate 64 inserted into the interior of the stacked base plate 2.

[0026] When the screw 61 drives the supplementary block assembly 66 downward, the moving plate 662 moves downward synchronously with the screw 61, gradually approaching the top ball 664 and compressing the second spring 661. The second spring 661 undergoes elastic deformation, generating a reverse elastic force, which acts as a buffer to prevent the supplementary block assembly 66 from causing rigid impact on the triangular plate 64 and the groove of the overlapping base plate 2. As the screw 61 continues to move downward, the squeezing force of the moving plate 662 on the auxiliary rubber ball 663 gradually increases. When the squeezing force reaches a certain value, the auxiliary rubber ball 663 ruptures, and the internal expanding foam adhesive flows out from the leakage hole of the liquid outlet plate 665, evenly filling the gap between the triangular plate 64 and the groove of the overlapping base plate 2. After the expanding foam adhesive cures naturally, it forms a whole with the triangular plate 64 and the inner wall of the groove, further enhancing the connection between the triangular plate 64 and the groove.

[0027] In some embodiments, a stabilizing component 53 is provided between the top reinforcing rib 51 and the bottom reinforcing rib 52. The stabilizing component 53 includes a corrugated reinforcing plate 531 disposed between the top reinforcing rib 51 and the bottom reinforcing rib 52. The reinforcing plate 531 is used to increase the overall bending stiffness between the top reinforcing rib 51 and the bottom reinforcing rib 52 and reduce the overall structural deflection.

[0028] When the composite slab is subjected to vertical loads and horizontal shear forces, the top reinforcing rib 51 and the bottom reinforcing rib 52 are subjected to tensile and compressive forces, respectively. At this time, the corrugated reinforcing plate 531 transfers the force on the top reinforcing rib 51 to the bottom reinforcing rib 52 through multi-point contact between the crests and troughs, and at the same time transfers the supporting force of the bottom reinforcing rib 52 to the top reinforcing rib 51, so that the top reinforcing rib 51 and the bottom reinforcing rib 52 form an integral load-bearing skeleton. The corrugated structure itself utilizes its high bending stiffness and good deformation resistance to disperse the concentrated stress of the top reinforcing rib 51 and the bottom reinforcing rib 52, reduce the relative deformation between the two layers of the plate, reduce the overall deflection of the structure, and avoid cracking of the composite interface due to local stress concentration, thereby achieving a simultaneous improvement in interface bonding performance and overall structural stiffness.

[0029] In some embodiments, the outer surface of the reinforcing plate 531 is provided with a friction plate 534 with recessed holes, the outer surface of the friction plate 534 is provided with a plurality of pointed cones 535 for increasing stability, a plurality of rubber blocks 532 are provided between the reinforcing plate 531 and the friction plate 534, and an air hole 533 is provided between every two rubber blocks 532.

[0030] When the composite slab is assembled and bears a load, the pointed cones 535 on the surface of the friction plate 534 embed into the concrete of the composite top slab 3 and composite bottom slab 2 under the load, increasing the frictional resistance between the friction plate 534 and the concrete, preventing slippage between the stabilizing component 53 and the concrete, and ensuring the stability of force transmission. When the composite slab is subjected to impact loads or vibration, the rubber block 532 undergoes elastic deformation, absorbing impact and vibration energy, and playing a buffering and shock-absorbing role. At this time, during the compression process of the rubber block 532, the air inside it is discharged through the air holes 533 between two adjacent rubber blocks 532, avoiding the generation of air pressure resistance, ensuring that the rubber block 532 can deform smoothly, maintaining a stable buffering effect, further optimizing the working performance of the stabilizing component 53, reducing the damage of vibration to the interface bond, and improving the seismic and impact resistance of the composite slab.

[0031] In some embodiments, a buffer steel ring 65 is embedded at the top of the composite base plate 2 to reduce the impact when the triangular plate 64 is installed with the composite base plate 2, and the triangular plate 64 is located at the center of the buffer steel ring 65.

[0032] When the triangular plate 64 of the assembly and connection mechanism 6 is inserted into the groove during the assembly of the composite top plate 3 and the composite bottom plate 2, the triangular plate 64 first contacts the inner ring of the buffer steel ring 65. At this time, the impact force generated by the insertion of the triangular plate 64 acts on the buffer steel ring 65, causing the buffer steel ring 65 to undergo elastic deformation, absorbing and buffering the impact force, avoiding rigid collision between the triangular plate 64 and the edge of the groove, and preventing damage and chipping of the concrete at the edge of the groove. When the composite plate is under load, the triangular plate 64 is subjected to compressive force. The buffer steel ring 65 can disperse the compressive force of the triangular plate 64 on the concrete around the groove, enhance the local stress performance of the concrete around the groove, and prevent the groove from being damaged due to excessive local stress.

[0033] In some embodiments, a positioning mechanism 4 is provided at the top of the composite base plate 2. The positioning mechanism 4 includes a plurality of support cylinders 43 fixedly installed at the top of the composite base plate 2. A fixing frame 42 is fixedly installed at the top of the support cylinders 43. A positioning ball 41 for positioning the composite top plate 3 is rotatably installed on the surface of the fixing frame 42. A circular groove is opened at the bottom end of the composite top plate 3, and the positioning ball 41 rotates inside the circular groove.

[0034] During the assembly of the composite slab, the top plate 3 is hoisted above the bottom plate 2. The position of the top plate 3 is adjusted so that the circular groove at the bottom of the top plate 3 aligns with the positioning ball 41 at the top of the support cylinder 43. The top plate 3 is then slowly lowered so that the positioning ball 41 is embedded in the circular groove. At this time, the positioning ball 41 can rotate freely within the circular groove. If there is a slight offset in the top plate 3, its position can be adjusted by pushing the top plate 3 and using the rotation of the positioning ball 41 until the top plate 3 and the bottom plate 2 are precisely aligned, completing the initial positioning. After positioning, the support cylinder 43 and the fixing frame 42 provide stable support for the top plate 3, preventing it from shaking or shifting during the installation of the connecting mechanism 6. This ensures the accurate insertion of the triangular plate 64 into the groove and the smooth tightening of the screw 61 in the connecting mechanism 6. After the connecting mechanism 6 is anchored, the positioning mechanism 4 continues to provide positioning support, ensuring the overall assembly accuracy of the composite slab.

[0035] In some embodiments, limiting pads 46 are fixedly installed on the surfaces of the stacked bottom plate 2 and the stacked top plate 3 that are close to each other. An elastic gas cylinder 44 for collecting gas is fixedly installed on the side wall of the support cylinder 43. Suction cups 45 are connected to both ends of the elastic gas cylinder 44, and the two suction cups 45 are respectively attached to the surfaces of the two limiting pads 46.

[0036] When the composite top plate 3 is initially positioned by the positioning ball 41 and the circular groove and slowly lowered, the limiting pad 46 exerts a squeezing effect on the elastic air cylinder 44. The elastic air cylinder 44 is compressed, and the internal gas is squeezed, creating a negative pressure inside the two suction cups 45. This causes the gas to adhere to the surface of the corresponding limiting pad 46, further fixing the relative position of the composite top plate 3 and the composite bottom plate 2 using atmospheric pressure. During subsequent construction and use, if the composite plate is subjected to vibration, the elastic air cylinder 44 can undergo elastic deformation to absorb vibration energy and reduce the impact of vibration on the positioning mechanism 4 and the interface bonding.

[0037] In some embodiments, the top reinforcing rib 51 is provided with an oil cavity 610 near the inside of the support cylinder 43, and the oil cavity 610 is connected to the surface of the screw 61 through a plurality of oil outlet holes 67. A piston 68 is provided inside the oil cavity 610, and a third spring 69 is fixedly installed between the piston 68 and the inner wall of the oil cavity 610.

[0038] When the screw 61 is rotated for tightening or loosening, the surface of the screw 61 is aligned with the oil outlet 67, and the third spring (69) is in a compressed and stored state during initial assembly. When the screw (61) rotates and the oil outlet (67) is unblocked, the third spring (69) releases its elastic force to push the piston (68) to move, squeezing the lubricating oil in the oil chamber 610. The lubricating oil flows out evenly through multiple oil outlets 67 and is coated on the threaded surface of the screw 61. During the rotation of the screw 61, the lubricating oil fills the gap between the threads, reduces the frictional resistance between the screw 61 and the threaded cylinder 62, and makes the rotation of the screw 61 smoother, making it easier for construction personnel to quickly complete the tightening or adjustment of the screw 61. At the same time, the lubricating oil forms a protective film on the surface of the screw 61, isolating it from corrosive media such as air and moisture, preventing the screw 61 from rusting, and improving overall durability.

[0039] In some embodiments, a connecting mechanism 8 is provided on both sides of the composite bottom plate 2 and the composite top plate 3. The connecting mechanism 8 includes a plurality of steel bars 83 pre-embedded on both sides of the composite bottom plate 2 and the composite top plate 3. A bushing 82 is snapped onto the surface of the composite bottom plate 2 and the composite top plate 3 near the steel bars 83, and a flared clamping plate 81 for stabilizing the deformation of the steel bars 83 is provided on the outer side of the bushing 82.

[0040] In the prefabrication stage of the composite bottom slab 2 and composite top slab 3, multiple reinforcing steel members 83 are pre-embedded on both sides of the slab body, and slots are reserved on the surface of the slab body near the reinforcing steel members 83 to complete the pre-embedding of the reinforcing steel members 83. When multiple composite slabs are assembled, the sides of adjacent composite slabs are aligned so that the reinforcing steel members 83 of adjacent slabs are butted together. By bending the opposing reinforcing steel members 83, the reinforcing steel members 83 are initially connected. The setting of the clamping plate 81 and the bushing 82 can reduce the damage to the surface of the composite slab caused by the deformation of the reinforcing steel members 83 due to bending, and avoid affecting the integrity of the subsequent interface bonding.

[0041] In some embodiments, shear plates 1 are installed on the surfaces of the composite bottom plate 2 and the composite top plate 3 that are close to each other, multiple hooks 7 are pre-embedded on both sides of the composite bottom plate 2 and the composite top plate 3, and multiple angle steels 9 are pre-embedded on the top of the composite bottom plate 2 and the composite top plate 3.

[0042] In this system, after the composite top slab 3 and composite bottom slab 2 are assembled, the shear plate 1 is located between the two slabs. When the composite slab is subjected to horizontal shear force, the shear plate 1 directly bears the shear force, reducing shear deformation between the two slabs, preventing debonding and cracking at the interface, and ensuring the firmness of the interface bond. When the composite slab is connected to the post-cast concrete or adjacent components, the pre-embedded hooks 7 on both sides of the slab are embedded in the post-cast concrete or adjacent components, enhancing the mechanical interlocking ability of the slab edges, improving the connection firmness, and preventing edge debonding. When the composite slab is subjected to vertical loads or top stress, the pre-embedded angle steel 9 at the top enhances the structural stiffness of the top of the slab, disperses the concentrated stress at the top, and prevents the top of the slab from being damaged due to stress concentration. At the same time, the angle steel 9 can also serve as an auxiliary connecting component to connect with other building components, further improving the reliability of the connection between the composite slab and the overall building structure.

[0043] Working principle: The top reinforcing rib 51 is pre-embedded and fixed at the bottom end of the composite top plate 3, and multiple bottom reinforcing ribs 52 are evenly embedded and fixed at the top end of the composite bottom plate 2. At the same time, a groove is opened at the top end of the composite bottom plate 2 corresponding to the position of the connecting mechanism 6, thus completing the prefabrication and assembly of the basic components. The composite top plate 3 is hoisted to the top end of the composite bottom plate 2, so that the connecting mechanism 6 is aligned with the groove of the composite bottom plate 2. At this time, the triangular plate 64 at the bottom end of the threaded cylinder 62 in the connecting mechanism 6 is in a contracted state under the elastic support of the first spring 63, which facilitates the smooth insertion of the triangular plate 64 into the groove of the composite bottom plate 2, thereby achieving the initial positioning and mechanical anchoring of the composite top plate 3 and the composite bottom plate 2. After the initial anchoring is completed, the screw 61 inside the threaded cylinder 62 is rotated by a tool. The screw 61 moves downward along the internal thread of the threaded cylinder 62, causing the supplementary block assembly 66 at its free end to move downward synchronously. During the movement of the supplementary block assembly 66, it continuously squeezes the surrounding triangular plates 64, causing the triangular plates 64 to overcome the elastic force of the first spring 63 and open outward until the outer surface of the triangular plates 64 is tightly attached to the inner wall of the groove of the overlapping base plate 2, completing the secondary fastening. This ensures that the two plates can work together to bear the load during subsequent stress, improving the interface bonding performance.

[0044] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A composite plate structure for enhancing interfacial bonding performance, comprising a composite bottom plate (2) and a composite top plate (3), characterized in that: The composite top plate (3) is located at the top of the composite bottom plate (2). A reinforcing mechanism (5) is provided between the composite top plate (3) and the composite bottom plate (2). The reinforcing mechanism (5) includes a top reinforcing rib (51) embedded at the bottom end of the composite top plate (3). Multiple bottom reinforcing ribs (52) are embedded at the top of the composite bottom plate (2). Multiple connecting mechanisms (6) are provided inside the composite top plate (3). The connecting mechanism (6) includes a threaded cylinder (62) fixedly installed inside the top reinforcing rib (51). The bottom end of the threaded cylinder (62) is provided with a plurality of triangular plates (64), and a first spring (63) is fixedly installed on the surface of the triangular plates (64) near the threaded cylinder (62). The top end of the stacked base plate (2) is provided with a groove, and the triangular plates (64) are inserted into the groove of the stacked base plate (2). The threaded cylinder (62) is threaded with a screw (61), and a supplementary block assembly (66) is fixedly installed on the free end of the screw (61), and the supplementary block assembly (66) is located between the plurality of triangular plates (64).

2. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: The supplementary block assembly (66) includes a top ball (664) threaded onto the free end of a screw (61). A movable plate (662) is rotatably mounted on one end of the screw (61) at the top of the top ball (664). A second spring (661) is fixedly mounted between the movable plate (662) and the top ball (664). A liquid outlet plate (665) with a leakage hole is fixedly mounted on the bottom end of the top ball (664). An auxiliary rubber ball (663) filled with expanding foam adhesive is fixedly mounted on the surface of the liquid outlet plate (665) near the movable plate (662). The outer shell of the auxiliary rubber ball (663) is made of brittle resin material, and the expanding foam adhesive is used to fix the triangular plate (64) inserted into the stacked base plate (2) with foam adhesive.

3. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: A stabilizing component (53) is provided between the top reinforcing rib (51) and the bottom reinforcing rib (52). The stabilizing component (53) includes a corrugated reinforcing plate (531) disposed between the top reinforcing rib (51) and the bottom reinforcing rib (52). The reinforcing plate (531) is used to increase the overall bending stiffness between the top reinforcing rib (51) and the bottom reinforcing rib (52) and reduce the overall structural deflection.

4. The composite plate structure for enhancing interfacial bonding performance according to claim 3, characterized in that: The outer surface of the reinforcing plate (531) is provided with a friction plate (534) with a concave hole. The outer surface of the friction plate (534) is provided with a plurality of pointed cones (535) for increasing stability. A plurality of rubber blocks (532) are provided between the reinforcing plate (531) and the friction plate (534), and an air hole (533) is provided between every two rubber blocks (532).

5. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: The top of the composite base plate (2) is fitted with a buffer steel ring (65) to reduce the impact when the triangular plate (64) is installed with the composite base plate (2), and the triangular plate (64) is located at the center of the buffer steel ring (65).

6. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: The top of the composite base plate (2) is provided with a positioning mechanism (4). The positioning mechanism (4) includes multiple support cylinders (43) fixedly installed on the top of the composite base plate (2). A fixing frame (42) is fixedly installed on the top of the support cylinder (43). A positioning ball (41) for positioning the composite top plate (3) is rotatably installed on the surface of the fixing frame (42). A circular groove is opened at the bottom of the composite top plate (3), and the positioning ball (41) rotates inside the circular groove.

7. The composite plate structure for enhancing interfacial bonding performance according to claim 6, characterized in that: Limiting pads (46) are fixedly installed on the surfaces of the overlapping bottom plate (2) and overlapping top plate (3) that are close to each other. An elastic air cylinder (44) for collecting air is fixedly installed on the side wall of the support cylinder (43). Suction cups (45) are connected to both ends of the elastic air cylinder (44), and the two suction cups (45) are respectively adsorbed on the surfaces of the two limiting pads (46).

8. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: The top reinforcing rib (51) is provided with an oil cavity (610) near the inside of the support cylinder (43), and the oil cavity (610) is connected to the surface of the screw (61) through multiple oil outlet holes (67). A piston (68) is provided inside the oil cavity (610), and a third spring (69) is fixedly installed between the piston (68) and the inner wall of the oil cavity (610).

9. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: Both sides of the composite bottom plate (2) and the composite top plate (3) are provided with connecting mechanisms (8). The connecting mechanisms (8) include multiple steel bars (83) pre-embedded on both sides of the composite bottom plate (2) and the composite top plate (3). The surfaces of the composite bottom plate (2) and the composite top plate (3) near the steel bars (83) are fitted with bushings (82), and the outer side of the bushings (82) is provided with a trumpet-shaped clamping plate (81) for stabilizing the deformation of the steel bars (83).

10. The composite plate structure for enhancing interfacial bonding performance according to claim 1, characterized in that: Shear plates (1) are installed on the surfaces of the composite bottom plate (2) and the composite top plate (3) that are close to each other. Multiple hooks (7) are pre-embedded on both sides of the composite bottom plate (2) and the composite top plate (3). Multiple angle steels (9) are pre-embedded on the top of the composite bottom plate (2) and the composite top plate (3).

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