Prefabricated floor slab and beam-column connecting structure

Abstract

The application belongs to the technical field of fabricated buildings, and specifically discloses a fabricated floor slab and beam-column connecting structure, which comprises a prefabricated floor slab and a prefabricated beam column, a trapezoidal design is formed on the prefabricated beam column body to serve as a combined support table, a connecting end table is integrally cast at the end of the prefabricated floor slab, and the connecting end table is overlapped and adapted above the combined support table; an elastic buffer support assembly is arranged between the combined support table and the connecting end table, and the two are flexibly anchored and fixed through an adjustable anchoring connecting assembly. The elastic buffer support assembly is used for achieving the seismic buffering of the connecting position, the adjustable anchoring connecting assembly is used for giving consideration to the flexibility of alignment adjustment and the firmness of connection, the hierarchical sealing and filling structure is used for improving the sealing, heat preservation and crack resistance of the connecting position, the overall structure is convenient to assemble, excellent in seismic resistance, and capable of adapting to prefabricated components with different processing errors, and the structural safety and the on-site assembly efficiency of the fabricated building are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a prefabricated floor slab and beam-column connection structure. Background Technology

[0002] Prefabricated buildings, with their advantages of standardized prefabrication, rapid on-site assembly, and high construction efficiency, have become an important development direction in the construction industry. The connection structure between floor slabs and beams / columns is the core load-bearing component of prefabricated buildings, and its connection strength, assembly convenience, and seismic resistance directly determine the overall safety and durability of the prefabricated building.

[0003] There are two main design approaches to the connection structure between prefabricated floor slabs and beams / columns: one approach uses stepped overlaps with rigid connectors such as anchors and bolts for fixation, long holes to compensate for processing errors in prefabricated components, and mortar and filler to seal and level the structure. However, this type of structure has excessive rigidity and insufficient seismic buffering performance. Under conditions such as earthquakes and load impacts, stress concentration at the connection points can easily lead to cracking and loosening. The other approach uses a steel frame structure to interlock and weld multiple floor slabs into a whole before connecting them to beams and columns. While this improves the overall stability of the floor slab, the welding process increases the difficulty of on-site construction. Furthermore, the connection between the steel frame and the floor slabs, beams, and columns remains rigid, and the seismic resistance is not fundamentally improved. In addition, the high standardization requirements of prefabricated components result in poor adaptability to processing errors.

[0004] Furthermore, existing connection structures often use single-layer sealing, which is prone to cracking and water seepage under temperature changes and slight structural deformation, affecting the building's insulation and waterproofing performance. Additionally, some connection structures rely on on-site steel plate laying for leveling, a cumbersome process that makes it difficult to guarantee leveling accuracy. Therefore, developing a prefabricated floor slab and beam-column connection structure that combines seismic buffering, flexible alignment adjustment, convenient assembly, and durable sealing is crucial to solving the existing technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated floor slab and beam-column connection structure. The structure uses an elastic buffer support component to achieve seismic buffering at the connection point. The adjustable anchor connection component balances the flexibility of alignment adjustment with the firmness of the connection. The graded sealing and filling structure improves the sealing, heat preservation and crack resistance of the connection point. The overall structure is easy to assemble, has excellent seismic resistance, and can adapt to prefabricated components with different processing errors, which greatly improves the structural safety and on-site assembly efficiency of prefabricated buildings.

[0006] To achieve the above objectives, the present invention provides a prefabricated floor slab and beam-column connection structure, including a prefabricated floor slab and prefabricated beams and columns. A trapezoidal design is provided on the prefabricated beams and columns as a combined support platform. A connecting end platform is integrally cast at the end of the prefabricated floor slab, and the connecting end platform overlaps and fits above the combined support platform. An elastic buffer support component is provided between the combined support platform and the connecting end platform, and the two are flexibly anchored and fixed by an adjustable anchoring connection component. The connecting end platform has a through waist-shaped adjustment hole, and a wear-resistant protective sleeve is embedded in the waist-shaped adjustment hole; the elastic buffer support assembly includes an embedded buffer pad, an elastic support column and a leveling bearing plate; The upper surface of the combined support platform is provided with a buffer groove, the embedded buffer pad is embedded in the buffer groove, the elastic support columns are fixed in an array on the top surface of the embedded buffer pad, the leveling bearing plate is fixed on the top of the elastic support column, and the lower surface of the connecting end platform is attached to the leveling bearing plate; the adjustable anchoring connection assembly includes a pre-embedded adjusting sleeve, a universal anchor rod and a locking fastener.

[0007] Preferably, the pre-embedded adjusting sleeve is pre-embedded inside the combined support platform. One end of the universal anchor rod is connected to the ball joint of the pre-embedded adjusting sleeve, and the other end passes through the waist-shaped adjusting hole opened in the connecting end platform and is threadedly engaged with the locking fastener. The universal anchor rod is inserted inside the wear-resistant protective sleeve. The length direction of the waist-shaped adjusting hole is set in the same direction as the overlapping direction of the connecting end platform.

[0008] Preferably, the bottom of the pre-embedded adjusting sleeve is provided with a ball joint cavity; the end of the universal anchor rod is provided with a limiting ball head, which is adapted to be snapped into the ball joint cavity; the other end of the universal anchor rod is provided with an external thread section, which is threadedly connected to the locking fastener.

[0009] Preferably, the locking fastener includes an elastic washer, a leveling nut, and a locking nut that are sequentially fitted onto the external thread section.

[0010] Preferably, the horizontal and vertical gaps between the connecting end platform and the combined support platform are provided with graded sealing and filling structures; the graded sealing and filling structures include a horizontal gap filling layer and a vertical gap filling layer.

[0011] Preferably, the combined support platform includes a horizontal support platform and a vertical limiting platform, the horizontal gap filling layer is disposed on the horizontal support platform, and the vertical gap filling layer is disposed between the connecting end platform and the vertical limiting platform.

[0012] Preferably, the horizontal gap filling layer consists of, from bottom to top, a thermal insulation foam layer, an elastic sealing layer, and a cement mortar leveling layer; the vertical gap filling layer consists of, from inside to outside, an expansion waterstop strip, an elastic sealant layer, and a decorative sealing layer; an embedding groove is provided on the inner side wall of the vertical limiting platform, and the expansion waterstop strip is embedded in the embedding groove.

[0013] Preferably, the embedded buffer pad is a rubber elastic pad with a built-in metal reinforcing mesh; the elastic support column is a polyurethane elastic column or a spring steel column; the leveling bearing plate is a stainless steel plate, and a reinforcing connecting seat is provided at the joint between its lower surface and the elastic support column.

[0014] Preferably, the top surface of the leveling support plate is provided with anti-slip protrusions, and the lower surface of the connecting end platform is provided with a suitable anti-slip groove, and the anti-slip protrusions are inserted into the anti-slip grooves to form a limiting and anti-slip structure.

[0015] Preferably, a steel truss is pre-embedded inside the precast floor slab, and an anchoring reinforcement bar that is integrally connected with the steel truss is pre-embedded inside the connecting end platform, and the anchoring reinforcement bar is arranged around the waist-shaped adjustment hole.

[0016] The advantages and beneficial effects of the prefabricated floor slab and beam-column connection structure described above are as follows: 1. This invention achieves flexible support at the connection point through the embedded buffer pad and elastic support column of the elastic buffer support component. Combined with the ball joint structure of the universal anchor rod, the connection structure has multi-directional buffer deformation capability, effectively absorbing the stress generated by earthquakes and load impacts, avoiding cracking and loosening caused by stress concentration at the connection point, and greatly improving the seismic performance and structural durability of prefabricated buildings.

[0017] 2. The waist-shaped adjustment hole of this invention provides horizontal displacement adjustment space for the universal anchor rod, the ball joint structure allows the universal anchor rod to swing at multiple angles, the leveling nut can realize vertical micro-adjustment, and the triple adjustment structure can effectively compensate for the processing error of prefabricated components and the alignment error of on-site assembly, reduce the difficulty of on-site assembly, and improve assembly accuracy and efficiency.

[0018] 3. The vertical limiting platform of the combined support platform of the present invention realizes the lateral displacement limitation of the floor slab. The anti-slip protrusion and the anti-slip groove are engaged to prevent relative sliding between the floor slab and the bearing plate. The pre-embedded adjustment sleeve is pre-embedded and extends into the combined support platform to improve the firmness of the anchoring foundation. The anchoring reinforcement is set around the waist-shaped adjustment hole to prevent stress cracking at the connection end. Multiple structures ensure the overall stability of the connection part.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the prefabricated floor slab and beam-column connection structure of the present invention before connection; Figure 2 This is a schematic diagram showing the completed connection of a prefabricated floor slab and beam-column connection structure according to the present invention; Figure 3This is a schematic diagram of a universal anchor rod in a prefabricated floor slab and beam-column connection structure according to the present invention; Figure 4 This is a schematic diagram of an anti-slip protrusion in a prefabricated floor slab and beam-column connection structure according to the present invention; Figure 5 This is a schematic diagram of the waist-shaped adjustment hole in a prefabricated floor slab and beam-column connection structure of the present invention.

[0021] Figure Labels 1. Trapezoidal design; 2. Expansion waterstop strip; 3. Elastic sealant layer; 4. Finishing sealant layer; 5. Waist-shaped adjustment hole; 6. Locking fastener; 7. Wear-resistant protective sleeve; 8. Precast floor slab; 9. Leveling bearing plate; 10. Reinforced connecting seat; 11. Elastic support column; 12. Buffer pad; 13. Horizontal gap filling layer; 14. Embedded adjusting sleeve; 15. Limiting ball head; 16. Universal anchor rod; 17. Ball joint cavity; 18. Anti-slip protrusion; 19. Anti-slip groove; 20. Connecting end platform; 21. Buffer groove; 22. External thread section. Detailed Implementation

[0022] The technical solution of the present invention will be further described below through embodiments.

[0023] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0024] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] The following examples are not intended to limit the invention, but are only for illustration. Unless otherwise specified, the experimental methods used in the following examples are generally performed under conventional conditions. Unless otherwise specified, the materials and reagents used in the following examples are commercially available.

[0026] Example 1 like Figure 1 As shown, a prefabricated floor slab and beam-column connection structure includes a prefabricated floor slab 8 and prefabricated beams and columns. A trapezoidal design 1 is provided on the prefabricated beams and columns as a combined support platform. A connecting end platform 20 is integrally cast at the end of the prefabricated floor slab 8, and the connecting end platform 20 overlaps and fits above the combined support platform. An elastic buffer support component is provided between the combined support platform and the connecting end platform 20, and the two are flexibly anchored and fixed by an adjustable anchoring connection component. The horizontal and vertical gaps between the connecting end platform 20 and the combined support platform are uniformly provided with a graded sealing and filling structure; the graded sealing and filling structure includes a horizontal gap filling layer 13 and a vertical gap filling layer.

[0027] The elastic cushioning support assembly includes an embedded cushioning pad 12, an elastic support column 11, and a leveling bearing plate 9.

[0028] like Figure 2 As shown, a buffer groove 21 is formed on the upper surface of the combined support platform, and an embedded buffer pad 12 is embedded in the buffer groove 21. The combined support platform includes a horizontal support platform and a vertical limiting platform, with the buffer groove 21 located on the horizontal support platform. Elastic support columns 11 are arrayed and fixed to the top surface of the embedded buffer pad 12. The leveling bearing plate 9 is fixed to the top of the elastic support columns 11, and the lower surface of the connecting end platform 20 is attached to the leveling bearing plate 9. The embedded buffer pad 12 is a rubber elastic pad with a built-in metal reinforcing mesh; it ensures both buffer elasticity and load-bearing capacity, and prevents the buffer pad 12 from deforming excessively under pressure. The elastic support columns 11 are made of polyurethane elastic columns or spring steel columns; they have excellent elastic recovery ability and compressive strength. The leveling bearing plate 9 is made of stainless steel, and a reinforcing connecting seat 10 is provided at the joint between its lower surface and the elastic support column 11 to improve the connection firmness.

[0029] The horizontal support platform is cast integrally with the top of the precast beam and column. The vertical limiting platform is fixed vertically to the outer edge of the horizontal support platform. The outer wall of the connecting end platform 20 is attached to the inner wall of the vertical limiting platform to achieve vertical limiting when the precast floor slab 8 is overlapped, prevent the floor slab from shifting laterally, and improve the stability of the overlap.

[0030] like Figure 3 As shown, the adjustable anchoring connection assembly includes a pre-embedded adjusting sleeve 14, a universal anchor rod 16, and a locking fastener 6. The pre-embedded adjusting sleeve 14 has a ball joint cavity 17 at its bottom; the universal anchor rod 16 has a limiting ball head 15 at its end, which is adapted to be snapped into the ball joint cavity 17, so that the universal anchor rod 16 can swing at multiple angles to adapt to different overlap angles and component errors; the other end of the universal anchor rod 16 has an external thread section 22, which is threadedly connected to the locking fastener 6.

[0031] The pre-embedded adjusting sleeve 14 is embedded inside the combined support platform. One end of the universal anchor rod 16 is connected to the pre-embedded adjusting sleeve 14 by a ball joint, and the other end passes through the waist-shaped adjusting hole 5 opened in the connecting end platform 20 and is threadedly engaged with the locking fastener 6.

[0032] like Figure 5 As shown, the connecting end platform 20 has a through-hole waist-shaped adjustment hole 5, and a wear-resistant protective sleeve 7 is embedded inside the waist-shaped adjustment hole 5. The universal anchor rod 16 passes through the wear-resistant protective sleeve 7 to prevent the universal anchor rod 16 from wearing down the inner wall of the waist-shaped adjustment hole 5 during adjustment and use. The length direction of the waist-shaped adjustment hole 5 is set in the same direction as the overlapping direction of the connecting end platform 20, providing horizontal displacement adjustment space for the universal anchor rod 16 and compensating for the processing errors of the prefabricated components and the alignment errors of on-site assembly.

[0033] The locking fastener 6 includes an elastic washer, a leveling nut, and a locking nut that are sequentially fitted onto the external thread section 22. The elastic washer fits against the upper surface of the connecting end platform 20, the leveling nut allows for fine vertical adjustment of the connecting end platform 20, and the locking nut completes the final fixation. The elastic washer effectively buffers vibration and prevents the locking nut from loosening.

[0034] A horizontal gap filling layer 13 is provided on a horizontal support platform, and is located in the gap between the leveling bearing plate 9 and the horizontal support platform. The horizontal gap filling layer 13 consists of a thermal insulation foam layer, an elastic sealing layer, and a cement mortar leveling layer from bottom to top. The thermal insulation foam layer provides thermal insulation and sound insulation, the elastic sealing layer adapts to slight structural deformation and prevents cracking, and the cement mortar leveling layer ensures a smooth surface.

[0035] A vertical gap filling layer is located between the connecting end platform 20 and the vertical limiting platform. From the inside out, the vertical gap filling layer consists of an expansion waterstop strip 2, an elastic sealant layer 3, and a finishing sealant layer 4. An embedding groove is provided on the inner side wall of the vertical limiting platform, and the expansion waterstop strip 2 is embedded in the groove. The expansion waterstop strip 2 expands upon contact with water, achieving efficient water sealing. The elastic sealant layer 3 adapts to structural vibrations and micro-deformations, and the finishing sealant layer 4 improves the smoothness of the appearance and the durability of the seal.

[0036] like Figure 4 As shown, the top surface of the leveling support plate 9 is provided with anti-slip protrusions 18, and the lower surface of the connecting end platform 20 is provided with matching anti-slip grooves 19. The anti-slip protrusions 18 are inserted into the anti-slip grooves 19 to form a limiting and anti-slip structure. This prevents relative sliding between the connecting end platform 20 and the leveling support plate 9, further improving the stability of the overlap.

[0037] A steel truss is embedded inside the precast floor slab 8 to enhance its overall load-bearing capacity. Anchor reinforcement bars, integrally connected to the steel truss, are embedded inside the connecting end platform 20, and are arranged around the waist-shaped adjustment holes 5. This enhances the structural strength of the connecting end platform 20 and prevents cracking at the anchorage due to stress concentration.

[0038] Example 2 1. Precast component processing The precast beams and columns and the precast floor slabs 8 are prefabricated in a standardized manner in the factory. The precast beams and columns have a trapezoidal design 1 to form a combined support platform. An adjusting sleeve 14 is pre-embedded in the combined support platform to ensure that the limiting ball head 15 is engaged in the ball joint cavity 17. At the same time, a buffer groove 21 is opened on the surface of the horizontal support platform and an embedding groove is opened on the inner side wall of the vertical limiting platform. The precast floor slabs 8 have steel trusses pre-embedded inside, and the ends are integrally cast with connecting end platforms 20. An anchoring reinforcement ribs connected to the steel trusses are pre-embedded in the connecting end platforms 20. At the same time, waist-shaped adjusting holes 5 are opened and wear-resistant protective sleeves 7 are embedded. Anti-slip grooves 19 are opened on the lower surface of the connecting end platforms 20.

[0039] 2. On-site assembly and splicing After the precast beams and columns are installed and fixed in the design position, embedded buffer pads 12 are installed in the buffer grooves 21 of the horizontal support platform. Elastic support columns 11 are fixed in an array on the upper surface of the embedded buffer pads 12. The leveling bearing plate 9 is then fixed to the top of the elastic support columns 11, ensuring that the anti-slip protrusions 18 on the leveling bearing plate 9 face upwards. The precast floor slab 8 is lifted by hoisting equipment, so that the anti-slip grooves 19 of the connecting end platform 20 are aligned with the anti-slip protrusions 18 of the leveling bearing plate 9. The connecting end platform 20 is then overlapped on the leveling bearing plate 9, so that the outer wall of the connecting end platform 20 is in contact with the inner wall of the vertical limiting platform, thus completing the initial overlap and limiting.

[0040] 3. Anchoring connection and leveling The limiting ball head 15 of the universal anchor rod 16 is engaged in the ball joint cavity 17 of the pre-embedded adjusting sleeve 14. The other end of the universal anchor rod 16 is passed through the waist-shaped adjusting hole 5 of the connecting end platform 20. According to the processing error of the prefabricated component, the position of the universal anchor rod 16 is adjusted horizontally along the length direction of the waist-shaped adjusting hole 5. At the same time, the swing angle of the universal anchor rod 16 is adjusted through the ball joint structure to achieve precise alignment. Elastic washers are sequentially fitted on the external thread section 22 of the universal anchor rod 16, and leveling nuts are screwed on. The vertical micro-adjustment of the connecting end platform 20 is achieved by rotating the leveling nuts to ensure the surface flatness of the prefabricated floor slab 8. After leveling, the locking nut is screwed on to complete the anchoring and fixing.

[0041] 4. Graded sealing and filling In the horizontal gap between the leveling bearing plate 9 and the horizontal support platform, the thermal insulation foam layer and the elastic sealing layer are laid sequentially from bottom to top, and finally the cement mortar leveling layer is poured to make the cement mortar leveling layer flush with the upper surface of the leveling bearing plate 9; the expansion waterstop strip 2 is installed in the mounting groove of the vertical limiting platform, and then the elastic sealant layer 3 is filled in the vertical gap between the connecting end platform 20 and the vertical limiting platform. Finally, the finishing sealing layer 4 is applied on the outside to complete the graded sealing and filling; at the same time, the drainage channel is connected to the horizontal gap filling layer 13 to ensure smooth drainage.

[0042] 5. Overall Acceptance After the cement mortar leveling layer and elastic joint filler layer 3 have cured, the firmness, flatness and sealing of the connection parts are tested. After the test is qualified, the connection and assembly of the entire prefabricated floor slab and beams and columns are completed.

[0043] This invention achieves flexible support at the connection point through the embedded buffer pad 12 and elastic support column 11 of the elastic buffer support component. Combined with the ball joint structure of the universal anchor rod 16, the connection structure has multi-directional buffer deformation capability, effectively absorbs the stress generated by earthquakes and load impacts, avoids cracking and loosening caused by stress concentration at the connection point, and greatly improves the seismic performance and structural durability of prefabricated buildings.

[0044] The waist-shaped adjustment hole 5 provides horizontal displacement adjustment space for the universal anchor rod 16. The ball joint structure allows the universal anchor rod 16 to swing at multiple angles. The leveling nut can achieve vertical micro-adjustment. The triple adjustment structure can effectively compensate for the processing error of the prefabricated components and the alignment error of the on-site assembly, reduce the difficulty of on-site assembly, and improve the assembly accuracy and efficiency.

[0045] The vertical limiting platform of the combined support platform realizes the lateral displacement limitation of the floor slab. The anti-slip protrusion 18 and the anti-slip groove 19 are engaged to prevent relative sliding between the floor slab and the bearing plate. The pre-embedded adjusting sleeve 14 is pre-embedded at an angle and extends into the vertical limiting platform to improve the firmness of the anchoring foundation. The anchoring reinforcing rib is set around the waist-shaped adjusting hole 5 to prevent stress cracking of the connecting end platform 20. The multiple structures ensure the overall stability of the connection part.

[0046] The graded sealing and filling structure adopts different multi-layer filling designs for horizontal and vertical gaps. Combined with elastic sealing components such as expansion waterstop strip 2, elastic sealing layer, and elastic sealant layer 3, it can adapt to the micro deformation and temperature changes of the structure, effectively preventing the sealing layer from cracking and seeping water. At the same time, the thermal insulation foam layer achieves thermal insulation and sound insulation, improving the performance of the building.

[0047] The overall structure is prefabricated in the factory and assembled on site, eliminating the need for on-site welding and concrete pouring. Assembly can be completed through simple processes such as hoisting, anchoring, and filling, which greatly improves on-site construction efficiency. At the same time, it reduces on-site construction waste and noise, meeting the requirements for green building development.

[0048] The material and spacing of the elastic support columns 11, the arrangement density of the universal anchor rods 16, and the material thickness of the sealing filling layer can be flexibly adjusted according to the load requirements and seismic resistance levels of different buildings. It is suitable for different types of prefabricated buildings such as multi-story and low-rise buildings and has a wide range of application prospects.

[0049] Therefore, the present invention adopts the above-mentioned prefabricated floor slab and beam-column connection structure, which realizes seismic buffering of the connection part through elastic buffer support components, and the adjustable anchoring connection components take into account both the flexibility of alignment adjustment and the connection firmness. The graded sealing and filling structure improves the sealing, heat preservation and crack resistance of the connection part. The overall structure is easy to assemble, has excellent seismic resistance, and can adapt to prefabricated components with different processing errors, which greatly improves the structural safety and on-site assembly efficiency of prefabricated buildings.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A prefabricated floor slab and beam-column connection structure, comprising prefabricated floor slabs and prefabricated beams and columns, characterized in that: A trapezoidal design is provided on the precast beam and column as a combined support platform. The end of the precast floor slab is integrally cast with a connecting end platform, which overlaps and fits above the combined support platform. An elastic buffer support component is provided between the combined support platform and the connecting end platform, and the two are flexibly anchored and fixed by an adjustable anchoring connection component. The connecting end platform has a through waist-shaped adjustment hole, and a wear-resistant protective sleeve is embedded in the waist-shaped adjustment hole; the elastic buffer support assembly includes an embedded buffer pad, an elastic support column and a leveling bearing plate; The upper surface of the combined support platform is provided with a buffer groove, the embedded buffer pad is embedded in the buffer groove, the elastic support columns are fixed in an array on the top surface of the embedded buffer pad, the leveling bearing plate is fixed on the top of the elastic support column, and the lower surface of the connecting end platform is attached to the leveling bearing plate; the adjustable anchoring connection assembly includes a pre-embedded adjusting sleeve, a universal anchor rod and a locking fastener.

2. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The pre-embedded adjusting sleeve is embedded inside the combined support platform. One end of the universal anchor rod is connected to the ball joint of the pre-embedded adjusting sleeve, and the other end passes through the waist-shaped adjusting hole opened in the connecting end platform and is threadedly engaged with the locking fastener. The universal anchor rod is inserted inside the wear-resistant protective sleeve. The length direction of the waist-shaped adjusting hole is set in the same direction as the overlapping direction of the connecting end platform.

3. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The bottom of the pre-embedded adjusting sleeve is provided with a ball joint cavity; the end of the universal anchor rod is provided with a limiting ball head, which is adapted to be snapped into the ball joint cavity; the other end of the universal anchor rod is provided with an external thread section, which is threadedly connected to the locking fastener.

4. The prefabricated floor slab and beam-column connection structure according to claim 3, characterized in that: The locking fastener includes an elastic washer, a leveling nut, and a locking nut that are sequentially fitted onto the external thread section.

5. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The horizontal and vertical gaps between the connecting end platform and the combined support platform are provided with graded sealing and filling structures; the graded sealing and filling structures include a horizontal gap filling layer and a vertical gap filling layer.

6. The prefabricated floor slab and beam-column connection structure according to claim 5, characterized in that: The combined support platform includes a horizontal support platform and a vertical limiting platform. The horizontal gap filling layer is disposed on the horizontal support platform, and the vertical gap filling layer is disposed between the connecting end platform and the vertical limiting platform.

7. The prefabricated floor slab and beam-column connection structure according to claim 6, characterized in that: The horizontal gap filling layer consists of, from bottom to top, a thermal insulation foam layer, an elastic sealing layer, and a cement mortar leveling layer; the vertical gap filling layer consists of, from inside to outside, an expansion waterstop strip, an elastic sealant layer, and a finishing sealing layer; an embedding groove is provided on the inner side wall of the vertical limiting platform, and the expansion waterstop strip is embedded in the embedding groove.

8. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The embedded buffer pad is a rubber elastic pad with built-in metal reinforcing mesh; the elastic support column is a polyurethane elastic column or a spring steel column; the leveling bearing plate is a stainless steel plate, and a reinforcing connecting seat is provided at the joint between its lower surface and the elastic support column.

9. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The top surface of the leveling support plate is provided with anti-slip protrusions, and the lower surface of the connecting end platform is provided with matching anti-slip grooves. The anti-slip protrusions are inserted into the anti-slip grooves to form a limiting and anti-slip structure.

10. The prefabricated floor slab and beam-column connection structure according to claim 1, characterized in that: The precast floor slab has a pre-embedded steel truss, and the connecting end platform has a pre-embedded anchoring reinforcement that is integrally connected with the steel truss. The anchoring reinforcement is arranged around the waist-shaped adjustment hole.

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