Pre-embedded foam column reinforcing and fixing device in hollow concrete structure construction

Abstract

The utility model belongs to the technical field of building construction, and discloses a pre-embedded foam column reinforcing and fixing device in hollow concrete structure construction, which comprises a steel belt, two fixing brackets respectively fixed with two ends of the steel belt, a screw rod in threaded connection with the fixing brackets, and a long hook connected with the end part of the screw rod, a plurality of placing grooves distributed at equal intervals are formed in the side wall of the steel belt, connecting pieces are arranged in the placing grooves, the connecting pieces are made of bamboo-plastic composite materials, and a plurality of fixing assemblies used for fixing the connecting pieces are arranged on the steel belt. The method has the effect of prolonging the service life of the steel belt.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a device for reinforcing and fixing pre-embedded foam columns in the construction of hollow concrete structures. Background Technology

[0002] The lightweight construction technology for the concrete roof slab of long-span tunnels borrows the concept of concrete structures, embedding hollow tubes in cast-in-place concrete according to the design, arranging them in a certain direction, and casting them on-site to form hollow concrete. This transforms solid concrete into hollow concrete, primarily by adding core molds to reduce the amount of concrete and steel reinforcement used, thereby reducing the structure's self-weight, improving the quality of the finished structure, and reducing leakage in reinforced concrete structures. Lightweight structure construction core molds are mostly high-density foam columns, which have advantages such as lightweight, easy availability, low cost, and corrosion resistance. However, their low stiffness and the large uneven buoyancy generated during concrete pouring can lead to problems such as core mold breakage, reinforcement intrusion into the core mold, and foam column erosion of the structural protective layer. Core mold reinforcement is a difficult and crucial aspect of the construction process, directly affecting construction efficiency and structural quality.

[0003] Chinese utility model patent CN217759489U discloses a device for reinforcing and fixing pre-embedded foam columns in the construction of hollow concrete structures. The device includes a steel strip, on which several rectangular bamboo strips are evenly fixed. The bamboo strips are perpendicular to the steel strip, and both ends of the steel strip are fixed to the upper end of a fixing bracket. The bottom surface of the fixing bracket has threaded holes, and a nut is welded to each threaded hole. The nut is threadedly connected to a screw rod, and a long hook is welded to the bottom of the screw rod. This invention uses a combination of bamboo strips and a steel strip to fix the core mold around the pre-embedded foam column, effectively preventing uneven floating and breakage of the pre-embedded foam column during concrete pouring.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: The above-mentioned device uses multiple rectangular bamboo strips fixed to the steel strips to fix the foam column. In actual operation, due to the large number of steel bars left near the foam column, the bamboo strips are prone to contact with the steel bars during the installation and disassembly of the steel strips by the workers, which can easily lead to the bamboo strips being pulled and damaged at the edges, resulting in a short service life and a poor user experience. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a device for reinforcing and fixing hollow concrete structures by pre-embedding foam columns.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pre-embedded foam column reinforcement and fixing device for hollow concrete structure construction, comprising a steel strip, two fixing brackets respectively fixed to both ends of the steel strip, a screw threadedly connected to the fixing brackets, and a long hook connected to the end of the screw. The side wall of the steel strip is provided with multiple equally spaced placement grooves, and a connecting piece is provided in the placement groove. The connecting piece is made of bamboo-plastic composite material, and the steel strip is provided with multiple fixing components for fixing the connecting piece.

[0007] By adopting the above technical solution, before pouring concrete, workers need to reinforce the embedded foam columns. At this time, workers need to connect multiple connecting plates to the steel strip in sequence and activate the fixing components to secure the connecting plates to the steel strip. Subsequently, workers need to press the connecting plates against the steel strip in sequence and connect the long hooks at both ends of the steel strip to two reinforcing bars to stabilize the steel strip and thus reinforce the embedded foam column. In this process, the combination of multiple connecting plates and steel strips around the embedded foam column fixes the core mold, effectively preventing uneven floating and breakage of the embedded foam column during concrete pouring. This simplifies the traditional core mold fixing and installation operation and improves work efficiency.

[0008] Furthermore, bamboo-plastic composite materials are made by adding bamboo fibers or bamboo powder as reinforcing materials or fillers to thermoplastic plastics, and then combining the bamboo with the molten thermoplastic plastic through heating. Alternatively, organic monomers can be injected into the microstructure of bamboo, followed by treatment using radiation or catalytic methods to produce graft copolymers or homopolymers between the organic monomers and the bamboo components. Because the connecting plates are made of bamboo-plastic composite materials, they have higher structural strength and better wear resistance compared to bamboo strips, thus reducing the occurrence of wire breakage and other damage during use. This effectively extends the service life of the connecting plates and improves the user experience for workers.

[0009] Furthermore, the fixing component includes a mounting block disposed in the mounting groove, a threaded rod fixedly connected to the mounting block near the side wall of the connecting piece, and a magnet block embedded in the mounting block away from the side wall of the connecting piece, wherein the threaded rod is threadedly connected to the connecting piece.

[0010] By adopting the above technical solution, when workers need to install the connecting piece, they need to connect the threaded rod to the connecting piece with the threaded connection, which will stabilize the threaded rod, the mounting block, and the connecting piece. Subsequently, workers need to connect the mounting block to the mounting groove, which will allow the magnet block and the steel strip to attract each other, thus initially stabilizing the connecting piece and reducing the difficulty of installing the connecting piece.

[0011] Furthermore, two symmetrical threaded posts are provided on the side wall of the mounting block away from the threaded rod, and nuts are threaded onto the threaded posts. A receiving groove for accommodating the threaded posts is provided on the inner wall of the mounting groove.

[0012] By adopting the above technical solution, when the mounting block and the mounting groove are connected to each other, the threaded column passes through the receiving groove under the action of the mounting block. At this time, the workers only need to connect the nut and the threaded column to each other to make the connecting piece press against the inner wall of the steel strip, thereby making the connecting piece stable.

[0013] Furthermore, an annular block is fixed on the screw to reduce the difficulty for workers to rotate the screw.

[0014] By adopting the above technical solution, when the connecting piece is connected to the pre-embedded foam column, the connecting piece abuts against the side wall of the pre-embedded foam column. The arc-shaped structure of the connecting piece increases the contact area between the connecting piece and the pre-embedded foam column, thereby improving the reinforcement effect of the connecting piece on the pre-embedded foam column and improving the user experience of the staff.

[0015] Furthermore, a fixing plate is rotatably provided on the side wall of the screw away from the fixed bracket, and the fixing plate is fixed to the long hook.

[0016] By adopting the above technical solution, workers can adjust the position of the long hook by rotating the screw. The fixing plate reduces the probability that the long hook will rotate with the screw when the worker rotates the screw. In addition, workers can manually adjust the orientation of the long hook, thereby reducing the probability that the orientation of the long hook will be inconsistent with the position of the rebar after the long hook is moved to a suitable position, thus improving the user experience of the workers.

[0017] Furthermore, a fixing bolt for fixing the fixing plate is provided on the side wall away from the stud.

[0018] By adopting the above technical solution, once the long hook is moved to the appropriate position, the operator only needs to rotate the fixing bolt to make the fixing bolt press against the end of the stud, thereby keeping the fixing plate stable under the action of the fixing bolt, thus keeping the angle of the long hook unchanged and improving the stability of the long hook.

[0019] Furthermore, both ends of the inner wall of the connecting piece are provided with rounded corners.

[0020] Furthermore, a silicone sheet is provided on the inner wall of the connecting piece to improve its stability.

[0021] By adopting the above technical solution, the silicone sheet reduces the probability of relative slippage when the connecting piece and the precast foam column are connected, thereby reducing the difficulty for workers to install the steel strip and improving the user experience.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. In this application, before pouring concrete, workers need to reinforce the embedded foam column. At this time, workers need to connect multiple connecting pieces to the steel strip in sequence and activate the fixing components to fix the connecting pieces and the steel strip together. Subsequently, workers need to press the multiple connecting pieces against the steel strip in sequence and connect the long hooks at both ends of the steel strip to two reinforcing bars respectively, thus stabilizing the steel strip and reinforcing the embedded foam column. During this process, the combination of multiple connecting pieces and the steel strip surrounds the embedded foam column to fix the core mold, effectively preventing uneven floating and breakage of the embedded foam column during concrete pouring, simplifying the traditional core mold fixing and installation operation, and improving work efficiency. Furthermore, bamboo-plastic composite material refers to a material in which bamboo fiber or bamboo powder is added as reinforcing material or filler to thermoplastic plastic, and the bamboo is composited with the molten thermoplastic plastic through heating; or it refers to a material in which organic monomers are injected into the microstructure of bamboo, and then treated by radiation or catalytic methods to produce graft copolymers or homopolymers between the organic monomers and the bamboo components. Because the connecting plate is made of bamboo-plastic composite material, it has higher structural strength and better wear resistance than bamboo strips, thereby reducing the occurrence of wire breakage and other phenomena during the use of the connecting plate, effectively extending the service life of the connecting plate, and thus improving the user experience of the staff.

[0024] 2. In this application, when workers need to install the connecting piece, they need to connect the threaded rod to the connecting piece with the threaded connection, which will stabilize the threaded rod, the mounting block, and the connecting piece. Subsequently, workers need to connect the mounting block to the mounting groove, which will attract the magnet block and the steel strip, thus initially stabilizing the connecting piece and reducing the difficulty of installing the connecting piece.

[0025] 3. In this application, when the mounting block and the mounting groove are connected to each other, the threaded column passes through the receiving groove under the action of the mounting block. At this time, the worker only needs to connect the nut and the threaded column to make the connecting piece press against the inner wall of the steel strip, thereby making the connecting piece stable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the fixing bolt and its connection structure according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the receiving groove and its connection structure according to an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the fixing component and its connection structure according to an embodiment of the present utility model.

[0030] In the diagram: 1. Steel strip; 11. Fixing bracket; 2. Screw; 21. Long hook; 3. Resettling groove; 31. Connecting piece; 4. Fixing assembly; 41. Resettling block; 42. Threaded rod; 43. Magnet block; 5. Threaded column; 51. Nut; 6. Receiving groove; 61. Fixing piece; 62. Ring block; 7. Fixing bolt; 8. Silicone sheet. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] like Figure 1-4 As shown in the embodiment of this application, a device for reinforcing and fixing pre-embedded foam columns in the construction of hollow concrete structures is disclosed, including a steel strip 1, a fixing bracket 11, a screw 2, a long hook 21, a connecting piece 31, a fixing component 4, a threaded column 5, a nut 51, an annular block 62, a fixing piece 61, a fixing bolt 7, and a silicone sheet 8. Two fixing brackets 11 are provided, and the two fixing brackets 11 are respectively fixed to both ends of the steel strip 1. The screw 2 is threadedly connected to the fixing bracket 11, and the long hook 21 is connected to the end of the screw 2. Multiple equally spaced placement grooves 3 are provided on the side wall of the steel strip 1. The connecting piece 31 is a sheet-like structure, placed within the placement groove 3, and is made of bamboo-plastic composite material.

[0033] Multiple fixing components 4 are arranged sequentially on the steel strip 1 for fixing the connecting piece 31. The fixing components 4 include a mounting block 41, a threaded rod 42, and a magnet block 43. The mounting block 41 is a block structure and is disposed in the mounting groove 3. The threaded rod 42 is fixedly connected to the side wall of the mounting block 41 near the connecting piece 31, and the threaded rod 42 is threadedly connected to the connecting piece 31. The magnet block 43 is a block structure and is embedded in the side wall of the mounting block 41 away from the connecting piece 31.

[0034] When the worker needs to install the connecting piece 31, the worker needs to thread the threaded rod 42 to the connecting piece 31, which will stabilize the threaded rod 42, the mounting block 41, and the connecting piece 31. Subsequently, the worker needs to connect the mounting block 41 to the mounting groove 3, which will attract the magnet block 43 to the steel strip 1, thus initially stabilizing the connecting piece 31 and reducing the difficulty of installing the connecting piece 31.

[0035] Two threaded posts 5 are provided and symmetrically arranged on the side wall of the mounting block 41 away from the threaded rod 42. The nut 51 is threadedly connected to the threaded post 5, and the inner wall of the mounting groove 3 is provided with a receiving groove 6 for accommodating the threaded post 5.

[0036] When the mounting block 41 is connected to the mounting groove 3, the threaded post 5 passes through the receiving groove 6 under the action of the mounting block 41. At this time, the worker only needs to connect the nut 51 to the threaded post 5 to make the connecting piece 31 press against the inner wall of the steel strip 1, thereby making the connecting piece 31 stable.

[0037] To improve the user experience, the central angle of the connecting piece 31 is 60-65 degrees. When the connecting piece 31 is connected to the embedded foam column, the connecting piece 31 presses against the side wall of the embedded foam column. The arc-shaped structure of the connecting piece 31 increases the contact area between the connecting piece 31 and the embedded foam column, thereby improving the reinforcement effect of the connecting piece 31 on the embedded foam column and thus improving the user experience.

[0038] The fixing plate 61 is a circular plate structure. The fixing plate 61 is rotatably mounted on the side wall of the screw 2 away from the fixing bracket 11, and the fixing plate 61 is fixed to the long hook 21.

[0039] The position of the long hook 21 can be adjusted by rotating the screw 2. The fixing plate 61 reduces the probability that the long hook 21 will rotate with the screw 2 when the operator rotates the screw 2. The operator can also manually adjust the orientation of the long hook 21, thereby reducing the probability that the orientation of the long hook 21 will be inconsistent with the position of the rebar after the long hook 21 is moved to a suitable position, thus improving the operator's user experience.

[0040] The fixing bolt 7 is located on the side wall of the fixing plate 61 away from the stud and is used to fix the fixing plate 61. After the long hook 21 is moved to the appropriate position, the operator only needs to rotate the fixing bolt 7 to make the fixing bolt 7 press against the end of the stud, so that the fixing plate 61 remains stable under the action of the fixing bolt 7, thereby keeping the angle of the long hook 21 unchanged and improving the stability of the long hook 21.

[0041] To reduce the difficulty for workers to rotate screw 2, an annular block 62 is fixed on screw 2.

[0042] To improve the user experience, both ends of the inner wall of the connecting piece 31 are rounded, and a silicone sheet 8 is provided on the inner wall of the connecting piece 31 to increase the maximum static friction. The silicone sheet 8 reduces the probability of relative slippage when the connecting piece 31 is connected to the precast foam column, thereby reducing the difficulty for the operator to install the steel strip 1 and improving the user experience.

[0043] The working principle of the pre-embedded foam column reinforcement and fixing device in the construction of a hollow concrete structure in this embodiment is as follows: Before pouring concrete, the workers need to reinforce the pre-embedded foam column. At this time, the workers need to connect multiple connecting pieces 31 to the steel strip 1 in sequence and activate the fixing component 4 to fix the connecting pieces 31 to the steel strip 1. Subsequently, the workers need to press the multiple connecting pieces 31 against the steel strip 1 in sequence and connect the long hooks 21 at both ends of the steel strip 1 to the two steel bars respectively, so that the steel strip 1 remains stable, thereby reinforcing the pre-embedded foam column. Bamboo-plastic composite material is made by adding bamboo fiber or bamboo powder as reinforcing materials or fillers to thermoplastic plastics, and then heating the bamboo to combine it with the molten thermoplastic plastic. Alternatively, it refers to injecting organic monomers into the microstructure of bamboo, and then treating it with radiation or catalytic methods to produce graft copolymers or homopolymers between the organic monomers and bamboo components. In this process, since the connecting pieces 31 are made of bamboo-plastic composite material, they have higher structural strength, better wear resistance, and longer service life compared to bamboo chips.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for reinforcing and fixing pre-embedded foam columns in the construction of hollow concrete structures, comprising a steel strip (1), two fixing brackets (11) respectively fixed to both ends of the steel strip (1), a screw rod (2) threadedly connected to the fixing brackets (11), and a long hook (21) connected to the end of the screw rod (2), characterized in that: The steel band (1) is provided with a plurality of equidistantly distributed installation grooves (3) on the side wall, a connecting piece (31) is arranged in the installation groove (3), the connecting piece (31) is a connecting piece (31) made of bamboo plastic composite material, and a plurality of fixing assemblies (4) for fixing the connecting piece (31) are arranged on the steel band (1).

2. The hollow foam column reinforcing and fixing device in the construction of hollow concrete structure according to claim 1, characterized in that: The fixing assembly (4) comprises an installation block (41) arranged in the installation groove (3), a threaded rod (42) fixedly connected to the side wall of the installation block (41) close to the connecting piece (31), and a magnet block (43) embedded in the side wall of the installation block (41) away from the connecting piece (31), and the threaded rod (42) is screwed with the connecting piece (31).

3. The hollow foam column reinforcing and fixing device in the construction of hollow concrete structure according to claim 2, characterized in that: Two symmetrical threaded columns (5) are arranged on the side wall of the installation block (41) away from the threaded rod (42), nuts (51) are screwed on the threaded columns (5), and a containing groove (6) for containing the threaded columns (5) is arranged on the inner wall of the installation groove (3).

4. The hollow foam column reinforcing and fixing device in the construction of hollow concrete structure according to claim 3, characterized in that: The screw rod (2) is fixedly provided with an annular block (62) for reducing the difficulty of rotating the screw rod (2) by the worker.

5. The hollow foam column strengthening and fixing device for pre-embedding in the construction of hollow concrete structure according to claim 4, characterized in that: The side wall of the screw rod (2) away from the fixing support (11) is rotatably provided with a fixing piece (61), and the fixing piece (61) is fixed with the long hook (21).

6. The hollow foam column strengthening and fixing device for pre-embedding in the construction of hollow concrete structure according to claim 5, characterized in that: The side wall of the fixing piece (61) away from the threaded column is provided with a fixing bolt (7) for fixing the fixing piece (61).

7. The hollow foam column strengthening and fixing device according to claim 6, characterized in that: The inner wall of the connecting piece (31) is provided with a fillet at both ends.

8. The hollow foam column strengthening and fixing device according to claim 7, characterized in that: The inner wall of the connecting piece (31) is provided with a silica gel piece (8) for improving the stability of the connecting piece (31).

Images