A reinforcement structure for the negative bending moment zone of a floor slab

Abstract

This application relates to a reinforcement structure for the negative bending moment zone of a floor slab, belonging to the field of floor slab reinforcement components. It includes embedded parts and supporting components. The embedded parts include embedded frames, two of which are symmetrically arranged. Multiple embedded rebar holes are horizontally and vertically fixed to the top surface of the two embedded frames. These rebar holes penetrate the floor slab rebar, and the top of the embedded frames is integrally cast with the floor slab. The supporting components include assembled frames, reinforcement members, and carbon fiber plates. Two assembled frames are symmetrically arranged, and reinforcement members are fixed between the two assembled frames. Carbon fiber plates are bonded to both the upper and lower ends of the reinforcement members. The two assembled frames are horizontally slidably inserted into the two embedded frames, and horizontal threads through the two assembled frames provide threaded holes. During assembly, the supporting components are assembled without slotting the floor slab, reducing damage to the floor slab structure and ensuring the overall strength of the floor slab.

Description

Technical Field

[0001] This application relates to the technical field of floor slab reinforcement components, and in particular to a floor slab negative bending moment zone reinforcement structure. Background Technology

[0002] Reinforcement of the negative bending moment zone of floor slabs is an important part of building structure reinforcement. It mainly targets the negative bending moment zone near the supports of reinforced concrete floor slabs to improve the load-bearing capacity, crack resistance and overall safety of the structure.

[0003] The existing announcement number is CN221422784U, entitled "A Floor Slab Reinforcement Component." It includes a floor slab body with two walls respectively snapped onto its outer side. Embedded blocks are installed at both ends of the two walls. A first L-shaped mounting seat is installed on the lower end face of the floor slab body and one side of the wall interior via bolt No. 1. This utility model uses two connecting plates to connect the two L-shaped mounting seats together, thereby further reinforcing and supporting the entire floor slab, improving its load-bearing and compressive strength. Simultaneously, two movable protruding plates can adaptively fit and support the two connecting plates, reducing the probability of floor slab cracking. The installation of the floor slab and walls is reinforced using threaded connecting plates and positioning blocks. Furthermore, the embedded blocks, telescopic plates, and flip-up baffles collectively limit the position of the floor slab, reinforcing the installation of the floor slab and walls and improving the stability of the floor slab reinforcement component.

[0004] Regarding the aforementioned technologies, the inventors discovered that when reinforcing floor slabs, it is necessary to open a fixing groove in the negative bending moment zone of the staircase for later installation of bolts to lock the installation of reinforcing components. However, reinforcing the negative bending moment zone of the floor slab requires slotting to insert bolts, which damages the original structure and affects the overall strength of the floor slab. Utility Model Content

[0005] To overcome the problem that existing floor slab reinforcement methods require creating fixing grooves in the negative bending moment zone of stairs for later installation of bolts to lock the reinforcement components, but floor slab reinforcement in the negative bending moment zone requires grooves to insert bolts, which damages the original structure and affects the overall strength of the floor slab, this application provides a floor slab negative bending moment zone reinforcement structure.

[0006] This application provides a floor slab negative bending moment zone reinforcement structure using the following technical solution: A floor slab negative bending moment zone reinforcement structure includes embedded parts and supporting parts. The embedded parts include embedded frames, two of which are symmetrically arranged. Multiple embedded steel bar holes are fixed horizontally and vertically on the top surface of the two embedded frames. The multiple embedded steel bar holes on the top surface of the embedded frames are connected to the floor slab steel bars. The top of the embedded frames is integrally cast with the floor slab. The supporting parts include assembled frames, reinforcement parts, and carbon fiber plates. Two assembled frames are symmetrically arranged, and reinforcement parts are fixed between the two assembled frames. Carbon fiber plates are bonded to both the upper and lower ends of the reinforcement parts. The two assembled frames are horizontally slidably inserted into the two embedded frames. Horizontal threads pass through the two assembled frames to form threaded holes. Assembly bolts are threaded through the two embedded frames and are fixedly assembled with the two assembled frames and the two embedded frames by assembly bolts.

[0007] By adopting the above technical solution, during the prefabrication of the floor slab, multiple pre-embedded steel reinforcement holes on the top surface of the pre-embedded frame are installed to penetrate the floor slab reinforcement. Then, the top of the pre-embedded frame is cast integrally with the floor slab. Next, the two assembly frames of the support are horizontally slidably inserted into the pre-embedded frame. Then, the assembly frame and the pre-embedded frame are fixed with assembly bolts. During use, the pre-embedded parts are cast integrally with the floor slab before assembly. Then, the support is fixedly assembled with the support beam. Thus, the floor slab is not slotted during assembly, and the assembly of the support is completed, reducing damage to the floor slab structure and ensuring the overall strength of the floor slab.

[0008] Optionally, a screw base is vertically fixed on the bottom surface of the pre-embedded frame, and a steel cable is vertically installed below the screw base.

[0009] By adopting the above technical solution, steel cables are assembled on the bottom surface of the pre-embedded frame, and the stability of the pre-embedded parts and the support beam is pre-set by pulling the steel cables to tighten them.

[0010] Optionally, a stud is vertically fixed to the top of the steel cable, and the stud is threadedly assembled in the screw barrel seat.

[0011] By adopting the above technical solution, the stud thread at the top of the steel cable is assembled in the screw cylinder seat, thereby completing the fixed assembly of the steel cable and the pre-embedded insertion frame.

[0012] Optionally, the bottom end of the steel cable is fixed with a fixing seat, and the fixing seat is fixedly assembled on the beam or column.

[0013] By adopting the above technical solution, the bottom fixing seat of the steel cable is fixedly assembled on the beam and column, and the anchoring and tightening embedded parts are on the supporting beam.

[0014] Optionally, the reinforcement includes an upper pressure plate, a lower pressure plate, and an elastic plate. The upper pressure plate and the lower pressure plate are arranged horizontally and symmetrically in the vertical direction, and two elastic plates are arranged horizontally and symmetrically between the upper pressure plate and the lower pressure plate. The two ends of the two elastic plates are respectively fixed to the inner vertical end face of the assembly frame.

[0015] By adopting the above technical solution, the upper and lower pressure plates in the reinforcement are made of steel, which increases the overall strength and bending resistance of the reinforcement. Elastic plates are horizontally fixed at the adjacent ends of the upper and lower pressure plates, and the deformation force of the elastic plates is used to improve the overall vibration absorption of the upper and lower pressure plates.

[0016] Optionally, a sliding column and a sliding cylinder are vertically fixed on the adjacent horizontal end faces of the upper and lower pressure plates, and the sliding column and sliding cylinder on the upper and lower pressure plates pass through the two elastic plates respectively. The sliding column and sliding cylinder on the upper and lower pressure plates are slidably inserted. The two elastic plates have a wave-shaped structure, and an elastic frame is horizontally fixed at the adjacent ends of the two elastic plates.

[0017] By adopting the above technical solution, the adjacent sliding columns and sliding cylinders of the upper and lower pressure plates pass through the two elastic plates respectively, and the sliding columns and sliding cylinders on the upper and lower pressure plates are slidably inserted, which facilitates the assembly of the upper and lower pressure plates on the upper and lower sides of the two elastic plates.

[0018] Optionally, a flexible fiber layer is bonded to the arc-shaped groove of the elastic plate.

[0019] By adopting the above technical solution, a flexible fiber layer is bonded in the arc groove of the elastic plate. The flexible fiber layer is made of carbon fiber, which improves the overall strength of the elastic plate by utilizing the high strength of carbon fiber.

[0020] Optionally, a damping rod is vertically fixed between the two elastic plates, and a support spring is vertically sleeved on the outside of the damping rod, with the two ends of the support spring fixed to the adjacent ends of the two elastic plates respectively.

[0021] By adopting the above technical solution, in order to improve the seismic resistance between the two elastic plates, the damping rod is used to stretch and compress the deformation of the support spring to absorb vibration, and then the deformation potential energy of the support spring is offset by the damping force generated by the damping rod.

[0022] In summary, this application includes at least one of the following beneficial technical effects: During the prefabrication of the floor slab, multiple embedded steel reinforcement holes are inserted through the top surface of the embedded frame to reinforce the floor slab, and then the top of the embedded frame is integrally cast with the floor slab. Next, two assembly frames of the support member are horizontally slidably inserted into the embedded frame, and then the assembly frames and embedded frames are fixed using assembly bolts. During use, the embedded parts are pre-cast integrally with the floor slab, and then the support member is fixedly assembled with the support beam. Thus, the floor slab is not slotted during assembly, and the assembly of the support member is completed, reducing damage to the floor slab structure and ensuring the overall strength of the floor slab. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3 This is a schematic diagram of the embedded part in the exploded state according to the embodiments of this application; Figure 4 This is a schematic diagram of the structure of the support member in the exploded state according to an embodiment of this application; Figure 5 This is a schematic diagram of the reinforcement component in the disassembled state according to an embodiment of this application.

[0024] Explanation of reference numerals in the attached drawings: 1. Embedded part; 11. Embedded insert frame; 12. Embedded rebar hole frame; 13. Assembly bolt; 14. Screw seat; 15. Steel cable; 16. Stud; 17. Fixing seat; 2. Supporting component; 21. Assembled insert frame; 211. Screw hole; 22. Reinforcing component; 221. Upper pressure plate; 222. Lower pressure plate; 223. Sliding cylinder; 224. Sliding column; 225. Elastic plate; 226. Elastic frame; 227. Damping rod; 228. Support spring; 229. Flexible fiber layer; 23. Carbon fiber plate. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings.

[0026] This application discloses a reinforcement structure for the negative bending moment zone of a floor slab. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4A floor slab negative bending moment zone reinforcement structure includes embedded parts 1 and support parts 2. The embedded parts 1 include embedded frames 11, with two symmetrically arranged embedded frames 11. Multiple embedded rebar hole frames 12 are horizontally and vertically fixed to the top surface of the two embedded frames 11. The multiple embedded rebar hole frames 12 on the top surface of the embedded frames 11 penetrate the floor slab rebar, and the top of the embedded frames 11 is integrally cast with the floor slab. The support parts 2 include assembled frames 21, reinforcement parts 22, and carbon fiber plates 23. Two symmetrically arranged insert frames 21 are provided, and a reinforcement member 22 is fixed between the two assembled insert frames 21. Carbon fiber plates 23 are bonded to both the upper and lower end faces of the reinforcement member 22. The two assembled insert frames 21 are horizontally slidably inserted into the two pre-embedded insert frames 11, and a screw hole 211 is opened through the horizontal thread on the two assembled insert frames 21. Assembly bolts 13 are threaded through the two pre-embedded insert frames 11, and the two assembled insert frames 21 and the two pre-embedded insert frames 11 are fixedly assembled by the assembly bolts 13. In use, during the prefabrication of the floor slab, the negative bending moment zone reinforcement of the floor slab is first installed through multiple embedded reinforcement holes 12 on the top surface of the embedded frame 11, which are then connected to the floor slab reinforcement. The top of the embedded frame 11 is then cast integrally with the floor slab. The two assembly frames 21 of the support member 2 are then horizontally slidably inserted into the embedded frame 11. The assembly frames 21 and the embedded frame 11 are then fixed using assembly bolts 13. In use, the embedded part 1 is pre-cast integrally with the floor slab, and then the support member 2 is fixedly assembled with the support beam. Thus, the assembly of the support member 2 is completed without slotting the floor slab during assembly, reducing damage to the floor slab structure and ensuring the overall strength of the floor slab.

[0027] Reference Figure 3 A screw base 14 is vertically fixed to the bottom surface of the pre-embedded frame 11, and a steel cable 15 is vertically installed below the screw base 14. The steel cable 15 is assembled on the bottom surface of the pre-embedded frame 11, pre-setting a tensioning mechanism to ensure the stability of the pre-embedded part 1 and the support beam. A stud 16 is vertically fixed to the top of the steel cable 15, and the stud 16 is threaded into the screw base 14. The threaded assembly of the stud 16 at the top of the steel cable 15 into the screw base 14 completes the fixed assembly of the steel cable 15 and the pre-embedded frame 11. A fixing seat 17 is fixed to the bottom end of the steel cable 15, and the fixing seat 17 is fixedly assembled onto the beam / column. The fixing seat 17 at the bottom of the steel cable 15 is fixedly assembled onto the beam / column, anchoring and tightening the pre-embedded part onto the support beam.

[0028] Reference Figure 4 and Figure 5The reinforcement component 22 includes an upper pressure plate 221, a lower pressure plate 222, and an elastic plate 225. The upper pressure plate 221 and the lower pressure plate 222 are horizontally symmetrically arranged in the vertical direction, and two elastic plates 225 are horizontally symmetrically arranged between the upper pressure plate 221 and the lower pressure plate 222. The two ends of the two elastic plates 225 are respectively fixed to the inner vertical end face of the assembly frame 21. The upper pressure plate 221 and the lower pressure plate 222 are made of steel, which increases the overall strength and bending resistance of the reinforcement component 22. The elastic plates 225 are horizontally fixed at the adjacent ends of the upper pressure plate 221 and the lower pressure plate 222. The deformation force of the elastic plates 225 enhances the overall vibration absorption of the upper pressure plate 221 and the lower pressure plate 222. Sliding columns 224 and sliding cylinders 223 are vertically fixed on adjacent horizontal end faces of the upper pressure plate 221 and the lower pressure plate 222, respectively. The sliding columns 224 and sliding cylinders 223 on the upper pressure plate 221 and the lower pressure plate 222 respectively pass through two elastic plates 225, and the sliding columns 224 and sliding cylinders 223 on the upper pressure plate 221 and the lower pressure plate 222 are slidably inserted. The two elastic plates 225 have a wave-shaped structure, and elastic frames 226 are horizontally fixed at adjacent ends of the two elastic plates 225. The adjacent sliding columns 224 and sliding cylinders 223 on the upper pressure plate 221 and the lower pressure plate 222 respectively pass through two elastic plates 225, and the sliding columns 224 and sliding cylinders 223 on the upper pressure plate 221 and the lower pressure plate 222 are slidably inserted, which facilitates the assembly of the upper pressure plate 221 and the lower pressure plate 222 on the upper and lower sides of the two elastic plates 225. A flexible fiber layer 229 is bonded to the arc-shaped groove of the elastic plate 225. The flexible fiber layer 229, made of carbon fiber, enhances the overall strength of the elastic plate 225 by utilizing the high strength of carbon fiber.

[0029] Reference Figure 5 A damping rod 227 is vertically fixed between two elastic plates 225, and a support spring 228 is vertically sleeved on the outside of the damping rod 227. The two ends of the support spring 228 are respectively fixed to the adjacent ends of the two elastic plates 225. In order to improve the seismic resistance between the two elastic plates 225, the damping rod 227 is used to stretch and compress the support spring 228 to absorb vibration, and then the deformation potential energy of the support spring 228 is canceled by the damping force generated by the damping rod 227.

[0030] The implementation principle of the floor slab negative bending moment zone reinforcement structure in this application embodiment is as follows: During the prefabrication of the floor slab, multiple embedded steel reinforcement holes 12 on the top surface of the embedded frame 11 are inserted through the negative bending moment zone reinforcement of the floor slab, and the floor slab reinforcement is connected. Then, the top of the embedded frame 11 is integrally cast with the floor slab. Next, two assembled frames 21 of the support member 2 are horizontally slidably inserted into the embedded frame 11. Then, the assembled frame 21 and the embedded frame 11 are fixed using assembly bolts 13. In use, the embedded part 1 is pre-cast integrally with the floor slab, and then the support member 2 is fixedly assembled with the support beam. The upper pressure plate 221 and lower pressure plate 222 in the firmware 22 are made of steel, which increases the overall strength and bending resistance of the reinforcement 22. Elastic plates 225 are horizontally fixed at the adjacent ends of the upper pressure plate 221 and lower pressure plate 222. The deformation force of the elastic plates 225 improves the overall vibration absorption of the upper pressure plate 221 and lower pressure plate 222. In order to improve the shock resistance between the two elastic plates 225, the damping rod 227 is used to stretch and compress the support spring 228 to absorb vibration. Then the deformation potential energy of the support spring 228 is canceled by the damping force generated by the damping rod 227.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reinforcement structure for the negative bending moment zone of a floor slab, characterized in that, The system includes embedded parts (1) and support parts (2). The embedded parts (1) include embedded insert frames (11), two of which are symmetrically arranged. Multiple embedded steel bar hole frames (12) are fixed horizontally and vertically on the top surface of the two embedded insert frames (11). The multiple embedded steel bar hole frames (12) on the top surface of the embedded insert frames (11) are connected to the floor slab reinforcement. The top of the embedded insert frames (11) is integrally cast with the floor slab. The support parts (2) include assembled insert frames (21), reinforcing parts (22), and carbon fiber plates (23). The assembled insert frames (21) Two symmetrically arranged frames (21) are provided, and the reinforcement member (22) is fixed between the two assembled frames (21). The carbon fiber plate (23) is bonded to both the upper and lower ends of the reinforcement member (22). The two assembled frames (21) are horizontally slidably inserted into the two pre-embedded frames (11). Horizontal threads are threaded through the two assembled frames (21) and threaded through the two pre-embedded frames (11) and assembly bolts (13) are threaded through the two pre-embedded frames (11). The two assembled frames (21) and the two pre-embedded frames (11) are all fixedly assembled by the assembly bolts (13).

2. A floor negative moment zone reinforcement structure according to claim 1, characterized in that: The pre-embedded insert frame (11) is vertically fixed with a screw base (14) on its bottom surface, and a steel cable (15) is vertically installed below the screw base (14).

3. A floor negative moment zone reinforcement structure according to claim 2, wherein: The top end of the steel cable (15) is vertically fixed with a stud (16), and the stud (16) is threadedly assembled in the screw barrel seat (14).

4. A floor negative moment zone reinforcement structure according to claim 3, wherein: The bottom end of the steel cable (15) is fixed with a fixing seat (17), and the fixing seat (17) is fixedly assembled on the beam and column.

5. A floor negative moment zone reinforcement structure according to claim 1, wherein: The reinforcement component (22) includes an upper pressure plate (221), a lower pressure plate (222), and an elastic plate (225). The upper pressure plate (221) and the lower pressure plate (222) are arranged horizontally and symmetrically in the vertical direction, and two elastic plates (225) are arranged horizontally and symmetrically between the upper pressure plate (221) and the lower pressure plate (222). The two ends of the two elastic plates (225) are respectively fixed to the inner vertical end face of the assembly frame (21).

6. A floor negative moment zone reinforcement structure according to claim 5, wherein: The upper pressure plate (221) and the lower pressure plate (222) are respectively vertically fixed with sliding columns (224) and sliding cylinders (223) on adjacent horizontal end faces. The sliding columns (224) and sliding cylinders (223) on the upper pressure plate (221) and the lower pressure plate (222) respectively penetrate the two elastic plates (225). The sliding columns (224) and sliding cylinders (223) on the upper pressure plate (221) and the lower pressure plate (222) are slidably inserted. The two elastic plates (225) have a wave-shaped structure. The adjacent ends of the two elastic plates (225) are horizontally fixed with elastic frames (226).

7. A floor negative moment zone reinforcement structure according to claim 6, wherein: A flexible fiber layer (229) is bonded to the arc-shaped groove of the elastic plate (225).

8. A floor negative moment zone reinforcement structure according to claim 7, wherein: A damping rod (227) is vertically fixed between the two elastic plates (225), and a support spring (228) is vertically sleeved on the outside of the damping rod (227), and the two ends of the support spring (228) are respectively fixed to the adjacent ends of the two elastic plates (225).

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