Floor slab connecting structure

Abstract

The utility model discloses a floor slab connecting structure which comprises a plurality of prefabricated slabs, the two sides of each prefabricated slab are provided with a rabbet and a tenon respectively, the prefabricated slabs are connected end to end through the rabbets and the tenons in a matched mode, the rabbets are provided with first through holes, and the tenons are provided with second through holes corresponding to the first through holes; a third through hole corresponding to the second through hole is formed in a top plate of the first T-shaped beam, and the first T-shaped beam is connected to the bottom of the tenon through a bolt; the first T-shaped beam and the second T-shaped beam are connected and spliced through bolts to form an I-shaped beam. A part of the beam body, namely the first T-shaped beam, is arranged on the prefabricated slab on the ground on site, and the prefabricated slab is in right-angle butt joint with the second T-shaped beam when being in butt joint in the air, so that the construction efficiency of butt joint of the prefabricated slab and the beam body is improved, and butt joint of a floor slab and a frame column can be rapidly completed.

Description

Technical Field

[0001] This utility model relates to the field of precast concrete structure technology, and in particular to a floor slab connection structure. Background Technology

[0002] Concrete floor slabs are an indispensable part of buildings, generally divided into cast-in-place concrete slabs and precast concrete slabs. They each have different characteristics and applicable scenarios. Cast-in-place concrete slabs refer to floor slabs completed on-site through a series of processes including formwork support, reinforcement arrangement, and concrete pouring. Precast concrete slabs, on the other hand, are prefabricated concrete slabs in a factory and transported to the construction site for assembly and installation. Compared to cast-in-place concrete slabs, precast concrete slabs have many advantages in terms of construction efficiency and environmental performance. The construction speed of precast concrete slabs is significantly faster than traditional cast-in-place concrete slabs. Precast slabs are produced uniformly in a factory, and through mechanized and standardized production processes, on-site construction time can be effectively reduced, avoiding the time wasted on-site pouring and curing. Furthermore, precast concrete slabs are more environmentally friendly. Since most of the production process takes place in the factory, dust, noise, and waste emissions generated during on-site operations are reduced, thus helping to reduce environmental pollution during building construction.

[0003] While precast concrete floor slabs offer significant advantages in construction speed, current construction methods also have certain shortcomings. Generally, existing precast concrete floor slab construction methods involve splicing multiple precast slabs onto beams of frame columns to form the slab. These precast slabs are joined together in mid-air on the construction floor and fixed in place by the beam-column structure. Although this method is faster than cast-in-place concrete floor slabs, the process of individually joining each precast slab, aligning the connection holes on the top of the beam with the connection holes on the bottom of the precast slab, is relatively complex and time-consuming, especially in cases of high floors or complex building structures, resulting in relatively low construction efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is: to solve the problem of low construction efficiency of precast slab docking.

[0005] To solve the above-mentioned technical problems, this utility model provides a floor slab connection structure, including: multiple precast slabs, each precast slab having a tongue and groove and a tenon on both sides, the multiple precast slabs being connected end-to-end through the tongue and groove and the tenon, the tongue and groove having a first through hole, and the tenon having a second through hole corresponding to the first through hole; a first T-shaped beam, the top plate of the first T-shaped beam having a third through hole corresponding to the second through hole, the first T-shaped beam being bolted to the bottom of the tenon; and a second T-shaped beam, the top surface of the top plate of the second T-shaped beam abutting against the bottom surface of the top plate of the first T-shaped beam, the top surface of the bottom plate of the second T-shaped beam abutting against the bottom surface of the bottom plate of the first T-shaped beam, the first T-shaped beam and the second T-shaped beam being bolted together to form an I-beam.

[0006] Furthermore, the precast slab includes a slab body, a first thin plate, and a second thin plate. The first thin plate and the second thin plate are located on both sides of the slab body. The two sides of the first thin plate are connected to the slab body and the tongue and groove, respectively. The two sides of the second thin plate are connected to the slab body and the tenon, respectively. The thickness of the tongue and groove, the tenon, the first thin plate, and the second thin plate is all less than the thickness of the slab body.

[0007] Furthermore, the thickness of the first thin plate is equal to the thickness of the second thin plate, and the thickness of the tenon is greater than the thickness of the second thin plate.

[0008] Furthermore, the formula for calculating the thickness of the tenon is: T=k*D*(AB) / B, where T is the thickness of the tenon, k is the proportional coefficient of the second thin plate, k takes a value of 1.1-1.2, D is the width of the second thin plate, B is the thickness of the second thin plate, and A is the thickness of the plate body.

[0009] Furthermore, the plate body includes a side plate, a regular plate, and a middle plate. One side of the side plate is connected to the first thin plate or the second thin plate. The other sides of the middle plate, the regular plate, and the side plate overlap in sequence. The middle plate, the regular plate, and the side plate are all tongue and groove plates. The tongue and groove on both sides of the middle plate are both lower tongue and groove. The tongue and groove on both sides of the regular plate are upper tongue and groove and lower tongue and groove, respectively. The other side of the side plate is an upper tongue and groove.

[0010] Furthermore, it also includes a first connector and a second connector, both of which are disposed on the plate body. The two ends of the first connector are respectively connected to the side plate and the conventional plate, and the two ends of the second connector are respectively connected to the conventional plate and the middle plate.

[0011] Furthermore, the top of the second T-shaped beam is provided with a fourth through hole corresponding to the third through hole. After the bolt passes through the first through hole, the second through hole, the third through hole and the fourth through hole in sequence, the tongue and groove, the tenon, the first T-shaped beam and the second T-shaped beam are fixedly connected.

[0012] Furthermore, the side of the first T-beam is bolted to the side of the second T-beam.

[0013] Furthermore, it also includes a third connector, one end of which is connected to the bottom of the precast slab, and the other end of which is connected to the bottom of the flange of the first T-beam.

[0014] Furthermore, the notch of the tongue and groove faces downwards, and the tongue and groove is formed by the groove of the channel steel.

[0015] Compared with the prior art, the floor slab connection structure of this utility model has the following advantages: Multiple precast slabs are joined on-site via tongue and groove joints and tenons. Then, a first T-beam is bolted to the bottom of the tenon of the precast slab. The joined floor slab is then suspended above the second T-beam of the frame column. The first and second T-beams are joined to form an I-beam, thus fixing and supporting the joined floor slab. By placing a portion of the beam, the first T-beam, on the precast slab on the ground, and allowing the precast slabs to be joined at right angles in the air, the construction efficiency of connecting the precast slabs to the beams is accelerated, enabling rapid connection between the floor slab and the frame column. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the floor slab connection structure provided by this utility model;

[0017] Figure 2 This is a cross-sectional view of the precast slab and the first T-beam of the floor slab connection structure provided by this utility model;

[0018] Figure 3 This is a front view of the precast slab of the floor slab connection structure provided by this utility model;

[0019] Figure 4 This is a front view of another embodiment of the precast slab with the floor slab connection structure provided by this utility model;

[0020] Figure 5 This is a cross-sectional view of the first T-beam and the second T-beam of the floor slab connection structure provided by this utility model.

[0021] The correspondence between the reference numerals and the component names is as follows:

[0022] 1. Precast slab; 11. Slab body; 111. Edge slab; 112. Conventional slab; 113. Middle slab; 12. First thin slab; 13. Second thin slab; 101. Tongue and groove; 102. Tenon; 103. First through hole; 104. Second through hole; 2. First T-beam; 201. Third through hole; 3. Second T-beam; 301. Fourth through hole; 4. Frame column; 5. First connector; 6. Second connector; 7. Third connector. Detailed Implementation

[0023] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0024] like Figures 1 to 5 As shown in the figure, this utility model embodiment discloses a floor slab connection structure, including: multiple precast slabs 1, a first T-shaped beam 2, and a second T-shaped beam 3.

[0025] The precast slab 1 has tongue and groove joints 101 and tenons 102 on both sides. Multiple precast slabs 1 are connected end to end by tongue and groove joints 101 and tenons 102. Tongue and groove joints 101 have a first through hole 103 and tenons 102 have a second through hole 104 corresponding to the first through hole 103. The top plate of the first T-beam 2 has a third through hole 201 corresponding to the second through hole 104. The first T-beam 2 is bolted to the bottom of the tenon 102. The top surface of the top plate of the second T-beam 3 abuts against the bottom surface of the top plate of the first T-beam 2, and the top surface of the bottom plate of the second T-beam 3 abuts against the bottom surface of the bottom plate of the first T-beam 2. The first T-beam 2 and the second T-beam 3 are bolted together to form an I-beam.

[0026] The floor slab connection structure of this application uses tongue and groove joints 101 and tenons 102 for docking, allowing multiple precast slabs 1 to be assembled on-site. Then, a first T-beam 2 is bolted to the bottom of the tenon 102 of the precast slab 1. The assembled floor slab is then suspended above the second T-beam 3 of the frame column 4. The first T-beam 2 and the second T-beam 3 are joined to form an I-beam, thus fixing and supporting the assembled floor slab. The right-angle docking of the first T-beam 2 and the second T-beam 3 improves the construction efficiency of connecting the precast slab 1 to the beam, enabling rapid connection between the floor slab and the frame column 4. By placing a portion of the beam, namely the first T-beam 2, on the precast slab 1 on the ground, and using the right-angle docking of the first T-beam 2 and the second T-beam 3 during the aerial connection of the precast slab 1, the construction efficiency of connecting the precast slab 1 to the beam is accelerated, enabling rapid connection between the floor slab and the frame column 4.

[0027] By matching the tongue and groove joint 101 and the tenon joint 102 of the precast slab 1, multiple precast slabs 1 can be quickly and accurately spliced ​​together to assemble a floor slab, avoiding misalignment or asymmetry problems that may occur in traditional splicing methods. The cooperation between the tongue and groove joint 101 and the tenon joint 102 provides good positioning accuracy, ensuring a more solid and reliable connection between floor slabs. At the same time, by matching the third through hole 201 of the first T-beam 2 with the second through hole 104 of the tenon joint 102, the first T-beam 2 can be quickly fixed to the precast slab 1 on site with bolts, reducing reliance on highly skilled workers and simplifying the construction process. The splicing method of using T-beams and I-beams effectively simplifies the docking operation between the floor slab and the beam. The docking of the first T-beam 2 with the tenon joint 102 further strengthens the connection stability between the precast slabs 1. The docking of the second T-beam 3 with the first T-beam 2 forms an I-beam structure, enhancing the overall rigidity of the floor slab. This not only reduces the complex operations involved in traditional beam-column connection processes, but also improves the stability and load-bearing capacity of the structure.

[0028] By adopting the standardized connection structure of precast slab 1, the on-site concrete pouring and processing steps can be significantly reduced, thereby lowering construction costs. Furthermore, the simplified splicing process and reduced need for highly skilled workers help reduce labor costs and accelerate the overall project progress. The precise mating of tongue and groove joint 101 and tenon joint 102, combined with the I-beam structure formed by splicing two T-shaped beams, ensures a stable connection between the floor slab and the beam, effectively improving the load-bearing capacity of the floor slab and the overall structural safety. It can effectively resist external forces and reduce structural safety hazards caused by weak connections. A portion of the beam, namely the first T-shaped beam 2, can be pre-set on the precast slab 1 on the ground, allowing for more flexible on-site operations. The connection process between the precast slab 1 and the beam does not rely on large construction machinery and can be completed more efficiently in confined spaces or high-rise buildings. In addition, the splicing sequence of the slabs can be adjusted as needed during construction to ensure the continuity and smooth progress of the work. Since precast slabs 1 are manufactured in the factory, the on-site concrete pouring and curing process is reduced, thus decreasing noise, dust, and waste emissions, meeting the requirements of modern green construction. At the same time, standardized component production helps to make rational use of materials, reduce waste, and promote sustainable development in the construction industry.

[0029] like Figure 2 and Figure 3 As shown, in an optional embodiment of this utility model, the precast slab 1 includes a slab body 11, a first thin plate 12, and a second thin plate 13. The first thin plate 12 and the second thin plate 13 are respectively located on both sides of the slab body 11. The two sides of the first thin plate 12 are respectively connected to the slab body 11 and the tongue and groove joint 101. The two sides of the second thin plate 13 are respectively connected to the slab body 11 and the tenon 102. The thickness of the tongue and groove joint 101, the tenon 102, the first thin plate 12, and the second thin plate 13 is all less than the thickness of the slab body 11.

[0030] By ensuring that the thicknesses of tongue and groove joint 101, tenon joint 102, first thin plate 12, and second thin plate 13 are all less than the thickness of plate 11, a groove is formed between adjacent precast slabs 1. After the floor slabs are installed in the frame columns 4, concrete is poured into the formed grooves to strengthen the connection between the precast slabs 1 and reinforce the precast slabs 1. The concrete pouring acts as a filler, which not only improves the bonding force between the floor slabs but also increases the overall compressive, tensile, and shear strength, reduces the relative displacement and loosening between the floor slabs, and ensures the stability of the structure.

[0031] Specifically, when the first T-beam 2 is bolted to the tenon 102, the bolt passes through the third through hole 201, the second through hole 104, and the first through hole 103 in sequence, extending into a groove formed between adjacent precast slabs 1. Concrete is then poured into the bolt within the groove. This concrete pouring enhances the connection strength between the precast slab 1 and the T-beam, allowing the floor slab to better integrate with the frame columns 4 and beams under load. The overall integrity of the floor slab and the main structure is strengthened, effectively preventing floor slab subsidence, deformation, or loosening caused by poor connections, thus improving the long-term stability and safety of the building. Simultaneously, since the thicknesses of the tongue and groove joint 101, the tenon 102, the first thin plate 12, and the second thin plate 13 are all less than the thickness of the slab body 11, the load-bearing structure of the floor slab can be rationally distributed and optimized. The thinner plate portion effectively reduces the self-weight of the floor slab, thereby improving the overall rigidity of the floor slab. The slab 11 bears the main structural load, enabling the floor slab to evenly distribute mechanical stress when subjected to large external forces, thereby enhancing the floor slab's compressive strength and stability. The thin structure of the first thin slab 12 and the second thin slab 13 effectively reduces the weight of the floor slab, which not only reduces the difficulty of handling and installation during construction but also reduces the need for lifting equipment, thus reducing construction costs. At the same time, the lighter structure helps to reduce the overall load of the building and improve the flexibility of the building structure, making it particularly suitable for high-rise buildings and projects with special load requirements.

[0032] By setting the first thin plate 12 and the second thin plate 13, the tongue and groove joint 101 and the tenon 102 can be extended outward, facilitating matching between them and improving the positioning accuracy between the plates 11 during the splicing process. This avoids structural asymmetry or instability caused by improper splicing. The first thin plate 12 and the second thin plate 13 are connected to the plate 11 through the tongue and groove joint 101 and the tenon 102, making the assembly and disassembly of the floor slab connection more convenient and providing good operability. When it is necessary to adjust or replace the floor slab, it can be easily disassembled and replaced, reducing the construction cycle and labor input. It is especially suitable for projects requiring rapid construction, such as prefabricated buildings and modular buildings.

[0033] like Figure 1 and Figure 3 As shown, in an optional embodiment of the present invention, the thickness of the first thin plate 12 is equal to the thickness of the second thin plate 13, and the thickness of the tenon 102 is greater than the thickness of the second thin plate 13.

[0034] By ensuring that the first thin plate 12 and the second thin plate 13 have equal thicknesses, the symmetry of the precast slab 1 connection structure is ensured. Symmetrical plate thicknesses help avoid structural shifts or asymmetrical loads caused by uneven thickness during splicing, thus maintaining the precision and stability of the precast slab 1 connection and ensuring that the spliced ​​precast slab 1 remains flat and secure during use. By making the thickness of the tenon 102 greater than that of the second thin plate 13, the tenon 102 can better engage with the second thin plate 13 during connection, increasing the contact area at the connection point. This effectively improves the shear resistance of the precast slab 1 connection, enabling it to better withstand shear stress under external forces and preventing connection failure or slippage of the precast slab 1 due to insufficient contact area. The equal thickness of the first thin plate 12 and the second thin plate 13 ensures a more uniform stress distribution in the connection structure, effectively improving the overall rigidity of the precast slab 1 connection. The cooperation between the tenon 102 and the second thin plate 13 enhances the stability of the joint, allowing the entire precast slab 1 structure to more evenly distribute and transfer mechanical stress under external loads, thus improving the overall compressive and deformation resistance of the precast slab 1. The tenon 102 enables better alignment and positioning of the precast slab 1 during splicing, ensuring precise alignment of the spliced ​​parts. The thickness difference between the tenon 102 and the second thin plate 13 helps avoid structural misalignment caused by improper splicing, making the connection of the precast slab 1 simpler and faster, further improving construction accuracy. The greater thickness of the tenon 102 compared to the second thin plate 13 increases the mechanical strength of the connection, thereby improving the long-term stability and durability of the precast slab 1 connection, effectively resisting wear and deformation during long-term use, extending the service life of the precast slab 1 structure, and reducing the frequency of maintenance and repair.

[0035] In an optional embodiment of this utility model, the formula for calculating the thickness of the tenon 102 is: T=k*D*(AB) / B, where T is the thickness of the tenon 102, k is the proportional coefficient of the second thin plate 13, K takes the value of 1.1-1.2, D is the width of the second thin plate 13, B is the thickness of the second thin plate 13, and A is the thickness of the plate body 11.

[0036] By using the formula T=k*D(AB) / B to calculate the thickness of the tenon 102, the thickness of the tenon 102 can be precisely adjusted according to the dimensional parameters of different floor slabs, such as the thickness A of slab 11, the thickness B of the second thinner slab 13, and the width D. By selecting an appropriate value within the range of the proportional coefficient k, fine-tuning can be made according to actual conditions to adapt to different floor slab requirements, ensuring the rationality of the tenon 102 thickness and the optimal connection effect. The formula for calculating the tenon 102 thickness helps ensure the strength and stability of the floor slab connection, avoiding weak connections or uneven stress caused by the tenon 102 being too thick or too thin.

[0037] The calculated thickness of the tenon 102, obtained through this formula, ensures a more precise fit between the components connecting the floor slabs, improving the alignment accuracy during splicing. Especially in large-scale construction, this effectively reduces errors caused by manual operation, ensuring the reliability of the floor slab connections. A reasonable tenon 102 thickness guarantees the strength and durability of the floor slab connection, reducing long-term structural problems caused by unstable connections and ensuring the stability and safety of the floor slab during use. This calculation formula allows the thickness of the tenon 102 to be optimized according to the actual dimensions of the slab 11, enabling the connection to achieve optimal mechanical performance under different loads. By adjusting the proportional coefficient k, designers can flexibly control the strength and compressive strength of the connection for different floor slab thicknesses and dimensions. An appropriate tenon 102 thickness ensures connection stability while avoiding excessive reinforcement that could lead to material waste or increased construction costs. By reasonably calculating and controlling the thickness of the tenon 102, the pressure can be evenly distributed when the floor slab connection is subjected to external loads or environmental influences, reducing local stress concentration, ensuring the overall stability of the floor slab structure, reducing the risk of floor slab deformation, loosening or breakage due to improper connection, and improving the overall safety and durability of the building.

[0038] like Figure 4 As shown, in an optional embodiment of this utility model, the plate 11 includes a side plate 111, a conventional plate 112, and a middle plate 113. One side of the side plate 111 is connected to the first thin plate 12 or the second thin plate 13. The other side of the middle plate 113, the conventional plate 112, and the side plate 111 overlap in sequence. The middle plate 113, the conventional plate 112, and the side plate 111 are all tongue and groove plates. The tongue and groove 101 on both sides of the middle plate 113 are both lower tongue and groove. The tongue and groove 101 on both sides of the conventional plate 112 are upper tongue and groove and lower tongue and groove, respectively. The other side of the side plate 111 is an upper tongue and groove.

[0039] Panel 11 is assembled from side panels 111, standard panels 112, and middle panels 113 using a tongue-and-groove structure, which effectively improves the connection strength of panel 11. The tongue-and-groove joints, with their lower and upper tongues overlapping, make the floor slab connection more robust and stable, avoiding safety hazards caused by weak splicing. The standardized tongue-and-groove structure on the side panels 111, standard panels 112, and middle panels 113 allows for rapid on-site assembly and installation of panel 11. In particular, the lower tongue of the middle panel 113, in conjunction with the upper and lower tongues of the standard panel 112, enables quick and precise overlapping of the panels, significantly increasing the assembly speed of precast panel 11 and shortening the overall construction cycle. By employing a reasonable overlapping method among the side panels 111, standard panels 112, and middle panels 113, construction workers do not need to make excessive adjustments to the position of panel 11, making it easier to complete the floor slab splicing work, simplifying the construction process, reducing reliance on highly skilled operations, and lowering the technical difficulty for construction workers. Since all parts of the panel 11 are tongue and groove panels, and the tongue and groove joint 101 provides good sealing between the panels, it can effectively prevent moisture, air or other substances from penetrating, thereby improving the waterproof performance and durability of the floor structure and extending the service life of the floor.

[0040] like Figure 4 As shown, in an optional embodiment of this utility model, it further includes a first connector 5 and a second connector 6. The first connector 5 and the second connector 6 are both disposed on the plate 11. The two ends of the first connector 5 are respectively connected to the side plate 111 and the conventional plate 112, and the two ends of the second connector 6 are respectively connected to the conventional plate 112 and the middle plate 113.

[0041] By introducing the first connector 5 and the second connector 6, the connection stability between the side plate 111, the conventional plate 112, and the middle plate 113 is further enhanced. The first connector 5 connects to the side plate 111 and the conventional plate 112, while the second connector 6 connects to the conventional plate 112 and the middle plate 113, forming multi-point support. This ensures a tight connection between each plate 11 and effectively prevents structural safety hazards caused by loose or insecure connections. The first connector 5 and the second connector 6 make the connection between the plates 11 simpler and more efficient. During construction, workers only need to install according to the standard connection method, avoiding tedious docking and adjustments, greatly saving construction time and labor costs. At the same time, the use of multiple connectors also enhances the adjustability of the connection, making fine adjustments to the position of the plates 11 more flexible during construction and adapting to different construction environments. Because the first connector 5 and the second connector 6 optimize the connection method between the slabs 11, construction workers can complete the assembly of the floor slabs through simple splicing and installation of the connectors. This reduces reliance on highly skilled operations, lowers the construction difficulty, and allows even less experienced construction workers to quickly master the installation techniques, thereby improving overall construction efficiency. By rationally designing the first connector 5 and the second connector 6, the stress distribution at the connection points is optimized, reducing excessive local stress and lowering the risk of cracks or damage to the precast slab 1 during long-term use. This effectively extends the service life of the precast slab 1 and reduces later maintenance costs.

[0042] like Figure 1 and Figure 5 As shown, in an optional embodiment of this utility model, the top of the second T-shaped beam 3 is provided with a fourth through hole 301 corresponding to the third through hole 201. After the bolt passes through the first through hole 103, the second through hole 104, the third through hole 201 and the fourth through hole 301 in sequence, the tongue and groove 101, the tenon 102, the first T-shaped beam 2 and the second T-shaped beam 3 are fixedly connected.

[0043] By setting a fourth through hole 301 corresponding to the third through hole 201 at the top of the second T-beam 3, bolts are sequentially passed through multiple through holes for fixing, ensuring a tight connection between the tongue and groove joint 101, the tenon 102, the first T-beam 2, and the second T-beam 3. This effectively improves the connection strength between different parts of the floor slab, reduces structural instability caused by loose connections, and thus greatly enhances the overall safety of the floor slab. By fixing the bolts through multiple through holes, construction workers only need to follow the standard bolt installation procedure to complete the connection of the entire floor slab, reducing complex operation steps, making the floor slab connection more convenient and efficient, simplifying the construction process, and saving construction time and labor costs.

[0044] By using multiple through holes and bolts for fixation, the external force acting on the connection of precast slab 1 is evenly distributed. This not only improves the tensile strength of the connection area but also effectively reduces local stress concentration, thereby enhancing the overall mechanical properties and strengthening the stability of the floor structure under external loads. The sequential bolting through multiple through holes effectively disperses the impact force of precast slab 1 under earthquakes and other external forces, thus enhancing the seismic resistance of the floor. This not only improves the overall integrity of the floor but also enhances the safety of the building during disasters such as earthquakes, ensuring that the floor connections are less prone to loosening or damage. Because different components are fixed with bolts, loosening due to long-term use is avoided, enhancing the durability of the connection area of ​​precast slab 1. The stability of the connection is guaranteed, helping to extend the service life of the floor and reducing structural problems caused by loosening or wear during long-term use.

[0045] like Figure 1 and Figure 5 As shown, in an optional embodiment of this utility model, the side of the first T-beam 2 is bolted to the side of the second T-beam 3.

[0046] By installing bolt connections on the sides of the first T-beam 2 and the second T-beam 3, the fastening force between them can be effectively increased. Side bolt connections provide stronger shear and tensile strength, ensuring the structural stability of the floor slab connection and preventing overall instability due to loose or failed connections. Side bolt connections are relatively simple; construction workers only need to follow standard procedures to insert and tighten the bolts, reducing complex installation steps, increasing construction efficiency, and saving time and labor costs, making them particularly suitable for large-scale floor slab installation projects. Side bolt connections can effectively disperse and transfer external forces, especially under dynamic loads such as earthquakes. By increasing the connection strength between the first T-beam 2 and the second T-beam 3, the overall seismic resistance of the floor slab can be significantly improved. This reduces potential structural deformation or displacement during vibration, thereby improving the seismic safety of the building.

[0047] Side-mounted bolt connections are not limited by the specific shape of floor slabs and beams, making them suitable for various types of building structures. Whether in high-rise buildings, industrial plants, or other complex structures, side-mounted bolt connections provide a reliable fixing solution with strong adaptability. Side-mounted bolt connections help distribute stress evenly at beam-to-beam connections, avoiding stress concentration problems that may occur with traditional connection methods. This helps improve the overall structural balance and safety, preventing structural damage caused by localized overloads.

[0048] like Figure 1As shown, in an optional embodiment of this utility model, a third connector 7 is also included. One end of the third connector 7 is connected to the bottom of the precast slab 1, and the other end of the third connector 7 is connected to the bottom of the flange of the first T-beam 2.

[0049] By adding the third connector 7, the connection between the precast slab 1 and the first T-beam 2 is further strengthened, providing additional support. Connecting the bottom of the precast slab 1 and the bottom of the flange of the first T-beam 2 effectively improves the overall connection strength between them, ensuring the connection can withstand greater loads and enhancing the stability of the precast slab 1 structure. The third connector 7 also helps optimize the stress distribution between the precast slab 1 and the first T-beam 2. Connecting at different locations makes the stress at the connection point of the precast slab 1 more uniform, avoiding localized stress concentration that may occur in traditional connection methods, reducing structural damage caused by stress concentration, and improving the overall structural safety. Adding the third connector 7 better disperses the external forces at the connection point of the precast slab 1. Especially under dynamic loads such as earthquakes, the additional support of the connector effectively reduces the impact of vibration on the floor slab, reducing vibration-induced displacement or deformation, thereby significantly improving the seismic performance of the building and enhancing the seismic stability of the floor slab. The third connector 7 further enhances the shear resistance between the precast slab 1 and the first T-beam 2. Especially when subjected to vertical loads or shear forces, the third connector 7 provides additional resistance, enhancing the overall structural stability under load and effectively preventing floor slab settlement or displacement. The third connector 7 effectively shares the long-term load at the connection between the floor slab and the beam, reducing loosening or fatigue damage caused by long-term use. By improving the durability of the connection, the third connector 7 makes the floor slab structure more reliable, extends the service life of the floor slab system, and reduces the need for later maintenance.

[0050] like Figure 1 and Figure 2 As shown, in an optional embodiment of this utility model, the tongue and groove joint 101 is formed by the groove of the channel steel. By setting the concave direction of the tongue and groove joint 101 downward, the tongue and groove joint 101 of the precast slab 1 can more firmly connect with the tenon 102 of the other precast slab 1 below using gravity. The tongue and groove joint 101 formed by the groove structure of the channel steel can effectively increase the shear resistance between the precast slabs 1 and 1. The groove of the channel steel makes the connection part more resistant to shear force, especially when subjected to vertical loads or horizontal shear forces, which can effectively reduce the shear stress at the connection part, prevent the precast slab 1 from slipping or displacing under load, thereby improving the safety and load-bearing capacity of the floor slab.

[0051] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this utility model can be achieved, and no limitation is imposed herein.

[0052] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A floor slab connection structure, characterized in that, include: Multiple precast slabs, each with a tongue and groove and a tenon on both sides, are connected end to end by the tongue and groove and the tenon. The tongue and groove are provided with a first through hole, and the tenon is provided with a second through hole corresponding to the first through hole. The first T-shaped beam has a third through hole on its top plate corresponding to the second through hole, and the first T-shaped beam is bolted to the bottom of the tenon. The second T-shaped beam has its top plate abutting against the bottom plate of the first T-shaped beam, and its bottom plate abutting against the bottom plate of the first T-shaped beam. The first T-shaped beam and the second T-shaped beam are connected and spliced ​​together by bolts to form an I-beam.

2. The floor slab connection structure according to claim 1, characterized in that, The precast slab includes a slab body, a first thin plate, and a second thin plate. The first thin plate and the second thin plate are located on both sides of the slab body. The two sides of the first thin plate are connected to the slab body and the tongue and groove, respectively. The two sides of the second thin plate are connected to the slab body and the tenon, respectively. The thickness of the tongue and groove, the tenon, the first thin plate, and the second thin plate is all less than the thickness of the slab body.

3. The floor slab connection structure according to claim 2, characterized in that, The thickness of the first thin plate is equal to the thickness of the second thin plate, and the thickness of the tenon is greater than the thickness of the second thin plate.

4. The floor slab connection structure according to claim 3, characterized in that, The formula for calculating the thickness of the tenon is: T=k*D*(AB) / B, Wherein, T is the thickness of the tenon, k is the proportional coefficient of the second thin plate, k takes a value of 1.1-1.2, D is the width of the second thin plate, B is the thickness of the second thin plate, and A is the thickness of the plate body.

5. The floor slab connection structure according to claim 2, characterized in that, The plate body includes a side plate, a regular plate, and a middle plate. One side of the side plate is connected to the first thin plate or the second thin plate. The other sides of the middle plate, the regular plate, and the side plate overlap in sequence. The middle plate, the regular plate, and the side plate are all tongue and groove plates. The tongue and groove on both sides of the middle plate are both lower tongue and groove. The tongue and groove on both sides of the regular plate are upper tongue and groove and lower tongue and groove, respectively. The other side of the side plate is an upper tongue and groove.

6. The floor slab connection structure according to claim 5, characterized in that, It also includes a first connector and a second connector, both of which are disposed on the plate body. The two ends of the first connector are respectively connected to the side plate and the conventional plate, and the two ends of the second connector are respectively connected to the conventional plate and the middle plate.

7. The floor slab connection structure according to claim 1, characterized in that, The top of the second T-shaped beam is provided with a fourth through hole corresponding to the third through hole. After the bolt passes through the first through hole, the second through hole, the third through hole and the fourth through hole in sequence, the tongue and groove, the tenon, the first T-shaped beam and the second T-shaped beam are fixedly connected.

8. The floor slab connection structure according to claim 1, characterized in that, The side of the first T-beam is bolted to the side of the second T-beam.

9. The floor slab connection structure according to claim 1, characterized in that, It also includes a third connector, one end of which is connected to the bottom of the precast slab, and the other end of which is connected to the bottom of the flange of the first T-beam.

10. The floor slab connection structure according to claim 1, characterized in that, The tongue and groove face downwards, and the tongue and groove are formed by the groove of the channel steel.

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