Reinforcing frame for opening in concrete floor

Abstract

The utility model discloses a kind of concrete floor slab opening hole reinforcing frames, including floor slab main body and the opening and hole on floor slab main body, the outside of floor slab main body is fixedly installed with the reinforcing frame located in the outside of hole;The reinforcing frame includes steel encloses purlin, the inside of steel encloses purlin is annular equidistance fixedly connected with connecting lug one and connecting lug two, the inside of connecting lug one and connecting lug two is equipped with mounting hole, the inside of steel encloses purlin movably connects with the support rod one and support rod two located in the outside of connecting lug one and connecting lug two, the support rod one and support rod two are crossed and arranged, the inside of support rod two movably installs the fixed bolt that penetrates support rod one and is connected in mounting hole;The concrete floor slab opening hole reinforcing frame can reach the purpose of improving mechanical property, improving bearing capacity, improving maintenance convenience and construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of floor slab opening reinforcement technology, specifically to a reinforced frame for openings in concrete floor slabs. Background Technology

[0002] Pre-reserved openings are often involved in cast-in-place floor slabs, generally for reserving space for fire protection, water supply and drainage, air conditioning pipes, etc. In addition, these pre-reserved openings can also be used for transporting related construction materials up and down the floor slab. Therefore, there are high requirements for the quality and safety of these pre-reserved openings in terms of load-bearing capacity and stress resistance.

[0003] Existing patent publication number CN222121034U discloses a reinforcement structure for openings in two-way slab floors. This structure uses transverse and longitudinal reinforcement bars to further strengthen the floor slab around the openings, solving the technical problem in existing two-way cast-in-place slab floors where the area around reserved openings lacks effective reinforcement, making it unsuitable for other construction operations. By reinforcing the area around the openings, the structure meets the need for increased load-bearing capacity around the openings while ensuring construction safety at the opening locations.

[0004] The aforementioned patent uses transverse and longitudinal reinforcement to reinforce the opening, relying on the bond between the steel bars and concrete to transfer force. If the concrete around the opening has cracked, the stress efficiency will be greatly reduced, and an independent load-bearing skeleton cannot be formed. For heavy-load scenarios, the improvement in shear and bending resistance is limited, the load-bearing capacity is insufficient, and the force transfer efficiency is low. At the same time, the reinforcement requires on-site binding of steel bars and pouring of concrete. The concrete pouring requires the base layer to be dry, and the curing is difficult in low-temperature environments. The overall construction period is long and the labor cost is higher, making it unsuitable for emergency reinforcement or rushed projects. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing a reinforced frame for openings in concrete floor slabs, thereby improving mechanical properties, load-bearing capacity, ease of maintenance, and construction efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reinforced frame for opening in a concrete floor slab, comprising a floor slab body and an opening in the floor slab body, wherein a reinforcing frame is fixedly installed on the outside of the opening; the reinforcing frame includes a steel waler, wherein connecting lug 1 and connecting lug 2 are fixedly connected in a ring at equal intervals on the inner side of the steel waler, wherein both connecting lug 1 and connecting lug 2 have mounting holes inside, and support rod 1 and support rod 2 are movably engaged on the inner side of the steel waler, wherein support rod 1 and support rod 2 are arranged in a cross pattern, and a fixing bolt that penetrates support rod 1 and connects to the mounting hole is movably installed inside support rod 2.

[0007] Preferably, the steel waler is made of hot-rolled channel steel welded around the opening to form a closed ring, and the flange of the steel waler is fixedly connected with a fixing lug, and a fixing anchor is movably installed inside the fixing lug, and the fixing anchor is anchored to the main body of the floor slab.

[0008] Preferably, the first support rod and the second support rod are arranged in a "well" shape around the outside of the opening, and the fixing bolts are high-strength bolts.

[0009] Preferably, the first support rod and the second support rod are arranged diagonally inside the steel waler.

[0010] Preferably, the fixing anchor is a chemical anchor connected to the floor slab body, and a post-grouting annular steel plate is provided between the steel waler and the contact surface of the floor slab body.

[0011] Preferably, both the first support rod and the second support rod are provided with engaging grooves on their outer sides, and the first support rod and the second support rod engage with each other.

[0012] Preferably, tensioning holes are provided inside the first and second support rods, and reinforcing bars located on the outside of the steel waler are movably installed inside the tensioning holes and the second connecting lug.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By hoisting the steel waler to the perimeter of the opening and fixing it in place, according to the positions of the staggered diagonal connecting lugs 1 and 2 on the inner side of the steel waler, the support rods 1 and 2 are sequentially clamped onto the connecting lugs 1 on the inner side of the steel waler. Then, fixing bolts are passed through the pre-drilled holes on the support rods 1 and 2 and bolted into the installation holes to complete the fixation. This ensures that the support is tightly fitted to the steel waler, improving the structural strength of the floor slab at the opening. The cross arrangement of support rods 1 and 2 can effectively distribute the force, and the tight fit between the steel waler and support rods 1 and 2 enhances stability and improves the load-bearing capacity.

[0015] 2. By using bolted connections between multiple nodes, components can be partially disassembled and replaced during later modifications or maintenance. At the same time, the modular design allows for prefabrication, resulting in short on-site assembly time and shortened maintenance period, making it suitable for emergency reinforcement or rushed projects. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is an exploded view of the reinforcing frame structure of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the fixing lug and chemical anchor of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the present invention.

[0021] In the diagram: 1. Main floor slab; 2. Opening; 3. Reinforcing frame; 31. Steel waler; 32. Connecting lug one; 33. Connecting lug two; 34. Mounting hole; 35. Support rod one; 36. Support rod two; 37. Fixing bolt; 38. Fixing lug; 39. Fixing anchor bolt; 310. Engaging groove; 311. Tensioning hole; 4. Reinforcing bar. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5This utility model provides a technical solution: a reinforced frame for opening a hole in a concrete floor slab, comprising a floor slab body 1 and an opening 2 in the floor slab body 1. A reinforcing frame 3 is fixedly installed on the outside of the opening 2 of the floor slab body 1. The reinforcing frame 3 includes a steel waler 31. Connecting lug 1 32 and connecting lug 2 33 are fixedly connected in a ring at equal intervals on the inner side of the steel waler 31. The connecting lug 1 32 and connecting lug 2 33 are both provided with mounting holes 34. Support rod 1 35 and support rod 2 36 located on the outside of the connecting lug 1 32 and connecting lug 2 33 are movably engaged on the inner side of the steel waler 31. The support rod 1 35 and support rod 2 36 are arranged in a cross pattern. The support rod 2 36 is movably installed with a penetrating support rod 1 35 connected to the... The fixing bolts 37 in the mounting holes 34 are used to hoist the steel waler 31 to the perimeter of the opening 2 and fix it in place. Based on the positions of the staggered and diagonally arranged connecting lugs 32 and 33 on the inner side of the steel waler 31, the support rods 35 and 36 are sequentially clamped onto the connecting lugs 32 on the inner side of the steel waler 31. Then, the fixing bolts 37 are passed through the reserved holes on the support rods 36 and 35 and bolted into the mounting holes 34 to complete the fixation. This ensures that the support is tightly fitted to the steel waler 31, improving the structural strength of the floor slab 1 at the opening 2. The cross arrangement of the support rods 35 and 36 can effectively distribute the force. The tight fit between the steel waler 31 and the support rods 35 and 36 enhances stability and improves the load-bearing capacity.

[0024] The steel waler 31 is made of hot-rolled channel steel welded around the opening 2 to form a closed ring. The flange of the steel waler 31 is fixedly connected with fixing lugs 38. Fixing anchors 39 are movably installed inside the fixing lugs 38. The fixing anchors 39 are anchored to the floor slab body 1. Through the cooperation of fixing lugs 38 and fixing anchors 39, the steel waler 31 is firmly anchored to the floor slab body 1, ensuring its stability and load-bearing capacity around the opening 2. The fixing lugs 38 are evenly distributed on the flange of the steel waler 31, enhancing the balance of the overall structure. The tight connection between the steel waler 31 and the floor slab body 1 improves the structural strength, optimizes the force transmission path, and enhances the safety and durability of the concrete floor slab in the area of ​​the opening 2.

[0025] Support rod 1 35 and support rod 2 36 are arranged in a "well" shape around the opening 2. The fixing bolt 37 is a high-strength bolt. The high strength of the fixing bolt 37 ensures its reliable performance under stress and can effectively prevent loosening or breakage caused by external force. Support rod 1 35 and support rod 2 36 are tightly connected by fixing bolt 37 to form a stable "well" shaped frame structure, which further enhances the support effect around the opening 2, improves the rigidity of the overall structure, optimizes the load distribution, and significantly alleviates the stress concentration phenomenon of the main body of the floor slab 1 in the area of ​​the opening 2.

[0026] Support rod 35 and support rod 36 are arranged diagonally inside the steel waler 31. This diagonal arrangement creates cross-bracing within the steel waler 31, further enhancing the overall stability of the frame structure. It also disperses localized stress around the opening 2, allowing the load to be distributed more evenly across the floor slab 1. Through this diagonal support, the frame structure exhibits higher resistance to deformation under external loads.

[0027] The fixed anchor 39 is a chemical anchor connected to the floor slab body 1. The chemical properties of the fixed anchor 39 enable it to form a strong bond with the floor slab body 1. The chemical bonding force significantly improves the stability and durability of the connection and has high pull-out resistance. A post-grouting annular steel plate is set between the steel waler 31 and the floor slab body 1. The setting of the post-grouting annular steel plate effectively fills the gap between the steel waler 31 and the floor slab body 1, enhancing the tightness of the connection between the two. Through the post-grouting process, a high-strength bonding layer is formed between the steel waler 31 and the floor slab body 1, improving the overall stability.

[0028] Please see Figure 3 Both support rod 35 and support rod 36 have locking grooves 310 on their outer sides. Support rod 35 and support rod 36 are locked together. Through the tight fit of the locking grooves 310, a stable connection structure is formed between support rod 35 and support rod 36, which effectively prevents loosening or displacement caused by external forces, enhances shear resistance, and enables the frame to maintain good stability under complex stress environments.

[0029] Please see Figure 1 and Figure 2 Tensioning holes 311 are provided inside the support rod 35 and the support rod 36. Reinforcing ribs 4 located on the outside of the steel waler 31 are movably installed inside the tensioning holes 311 and the connecting lug 33. The setting of reinforcing ribs 4 further enhances the overall connection strength between the support rod 35 and the support rod 36 and the steel waler 31. Through the setting of tensioning holes 311, reinforcing ribs 4 can uniformly transmit stress when subjected to force.

[0030] Working principle: Holes are drilled in the main floor slab 1 according to the location of opening 2 to correspond to the dimensions of the fixing anchor 39. The fixing anchor 39 is then installed inside the holes and cured. Subsequently, the prefabricated steel waler 31 is hoisted around opening 2 and initially fixed with the fixing anchor 39. Based on the positions of the staggered diagonal connecting lugs 32 and 33 on the inside of the steel waler 31, the support rods 35 and 36 are successively engaged on the connecting lugs 32 on the inside of the steel waler 31. The fixing bolts 37 are then used to penetrate the support rods 36 and 36. The pre-drilled hole on 35 is bolted into the mounting hole 34 for fixation, ensuring that the support fits tightly with the steel waler 31. The rear grouting annular steel plate is sleeved on the outside of the steel waler 31 and fixed with expansion bolts. Then, non-shrink cement-based grout is injected into the grouting hole on the rear grouting annular steel plate to ensure dense filling. The installation is completed by setting the reinforcing bar 4 inside the tensioning hole 311 and anchoring it to the edge of the floor slab body 1 through the connecting lug 2 33 and the side of the steel waler 31. The above is the working process of the entire device. All contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A concrete floor opening reinforcement frame, comprising a floor body (1) and an opening (2) formed on the floor body (1), characterized in that: The main body of the floor slab (1) is fixedly installed with a reinforcing frame (3) located outside the opening (2); The reinforcing frame (3) includes a steel waler (31). The inner side of the steel waler (31) is fixedly connected with connecting lug 1 (32) and connecting lug 2 (33) in an annular shape. The inner side of the connecting lug 1 (32) and connecting lug 2 (33) is provided with mounting holes (34). The inner side of the steel waler (31) is movably engaged with support rod 1 (35) and support rod 2 (36) located outside the connecting lug 1 (32) and connecting lug 2 (33). The support rod 1 (35) and support rod 2 (36) are arranged in a cross pattern. The inner side of the support rod 2 (36) is movably installed with a fixing bolt (37) that penetrates the support rod 1 (35) and connects to the mounting hole (34).

2. A concrete floor opening reinforcement frame according to claim 1, characterized in that: The steel waler (31) is made of hot-rolled channel steel and welded around the opening (2) to form a closed ring. The flange of the steel waler (31) is fixedly connected with a fixed lug (38). The fixed lug (38) is movably installed with a fixed anchor bolt (39) inside. The fixed anchor bolt (39) is anchored to the floor slab body (1).

3. A concrete floor opening reinforcement frame according to claim 1, wherein: The first support rod (35) and the second support rod (36) are arranged in a "well" shape around the opening (2), and the fixing bolt (37) is a high-strength bolt.

4. A concrete floor opening reinforcement frame according to claim 1, wherein: The first support rod (35) and the second support rod (36) are located diagonally inside the steel waler (31).

5. A concrete floor opening reinforcement frame according to claim 2, wherein: The fixed anchor (39) is connected to the floor slab body (1) using chemical anchors, and a post-grouting annular steel plate is provided between the steel waler (31) and the floor slab body (1) contact surface.

6. A concrete floor opening reinforcement frame according to claim 1, wherein: Both the first support rod (35) and the second support rod (36) are provided with engaging grooves (310) on their outer sides, and the first support rod (35) and the second support rod (36) engage with each other.

7. A concrete floor opening reinforcement frame according to claim 1, wherein: Tensioning holes (311) are provided in the first support rod (35) and the second support rod (36). Reinforcing bars (4) located outside the steel waler (31) are movably installed inside the tensioning holes (311) and the second connecting lug (33).

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