A reinforced concrete beam strengthening structure and strengthening method

Abstract

This invention provides a reinforced concrete beam reinforcement structure and method, including bolt holes for inserting mounting bolts on both sides of the main reinforced beam sleeve. A pair of parallel pressure strips are installed on one side and bottom of several reinforcing steel strands. Reinforcing plates are fixedly connected to the pressure strips and the beam. During the reinforcement process, the reinforcing steel strands squeeze the adhesive storage bag, forcing the stored adhesive to be squeezed out through the adhesive release hole and applied between the beam and the reinforcing plate. Concrete is filled into the U-shaped reinforcement space of the main reinforced beam sleeve through the concrete injection hole. This invention employs a beam reinforcement structure with multiple reinforcement methods working in tandem, enabling more comprehensive reinforcement of the beam. Furthermore, the various reinforcement methods are interconnected, further improving the reinforcement effect compared to simple superposition of multiple methods. It also simplifies the reinforcement operation steps and reduces the burden on operators.

Description

Technical Field

[0001] This invention relates to the field of reinforced concrete beam strengthening technology, specifically to a reinforced concrete beam strengthening structure and strengthening method. Background Technology

[0002] The prior art, disclosed in CN102704698B, discloses a fully prestressed composite integrated reinforced concrete structure. The reinforced concrete beam structure includes a beam to be reinforced, a compression zone steel plate, a tension zone steel plate, steel plate hoops, diagonal reinforcing bars, and bolts. The reinforced concrete column structure includes a column to be reinforced, jacks, welded temporary brackets, and at least two sets of reinforcement components. The reinforced concrete column structure also includes a column to be reinforced, fixing components, connecting steel plates, and at least two sets of reinforcement components. The reinforced concrete cantilever slab structure includes the extended end of the cantilever slab to be reinforced, steel plate strips, chemical anchors, and fasteners. This design solves the fundamental problem of the inability of new and old structures to work collaboratively in known reinforced concrete structure reinforcement technologies.

[0003] The above-mentioned device mainly uses wire bracing to reinforce reinforced concrete beams. However, the above-mentioned fully prestressed composite integrated reinforced concrete structure still has obvious defects in use: the reinforcement method of the concrete beam is relatively simple, and the complete set of hoop reinforcement is not suitable for all beam structures. Although there are beam reinforcement structures that integrate multiple reinforcement methods in the existing technology, the synergy between the multiple reinforcement methods is low, and the construction is difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforced concrete beam strengthening structure and strengthening method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A reinforced concrete beam reinforcement structure includes a main reinforcement beam sleeve fitted on the outside of a crossbeam and side beams. The main reinforcement beam sleeve has a U-shaped reinforcement space. Within the U-shaped reinforcement space, a plurality of reinforcement steel strands are equidistantly arranged along the length of the main reinforcement beam sleeve. One end of each reinforcement steel strand is fixedly connected to a bolt assembly block, and the end of each reinforcement steel strand away from the bolt assembly block is fixedly connected to a winding and fastening strap. The bolt assembly block has bolt holes for inserting mounting bolts on one side. The mounting bolts are located on both sides of the main reinforcement beam sleeve. The winding and fastening strap is connected to a fastening mechanism. The fastening mechanism winds up the winding and fastening strap, thereby pulling the reinforcement steel strands to clamp and reinforce the crossbeam.

[0007] Several of the reinforcing steel strands are equipped with a pair of parallel pressure strips on one side and at the bottom of the crossbeam. Each pressure strip is fixedly connected to a reinforcing plate. An adhesive storage bag is also provided between the reinforcing plate and the crossbeam. Adhesive release holes are opened on both sides of the adhesive storage bag. During the process of the reinforcing steel strands clamping and reinforcing the crossbeam, they squeeze the adhesive storage bag, forcing the adhesive stored inside to be squeezed out through the adhesive release holes and coated between the crossbeam and the reinforcing plate.

[0008] A concrete injection hole is also provided above the main reinforcing beam sleeve, through which concrete is filled into the U-shaped reinforcing space of the main reinforcing beam sleeve.

[0009] Preferably, the main reinforcing beam sleeve is also provided with a sealing sleeve opening for embedding the crossbeam, and a sealing rubber gasket is installed on the inner side of the main reinforcing beam sleeve at the sealing sleeve opening.

[0010] Preferably, the main reinforcing beam sleeve is also provided with several operating channels that are equidistantly connected to the interior of the U-shaped reinforcing space. The number of operating channels corresponds one-to-one with the number of reinforcing steel strands. A sealing block is detachably installed on the outside of each operating channel.

[0011] Preferably, the fastening mechanism includes a fastening mechanism box disposed inside the main reinforcing beam sleeve. A fastening turntable is movably installed inside the fastening mechanism box. The fastening turntable is coaxially connected to a fastening knob via a one-way rotating shaft. The fastening knob is located in a fastening hole opened on the outside of the main reinforcing beam sleeve. A clamping claw that cooperates with the one-way rotating shaft is also installed on the fastening mechanism box. The clamping claw is used to restrict the reverse rotation of the one-way rotating shaft.

[0012] Preferably, reinforcing angle steel is also installed on both sides of the bottom of the main reinforcing beam sleeve.

[0013] A method for strengthening reinforced concrete beams, using the aforementioned reinforced concrete beam strengthening structure, includes the following steps:

[0014] Step 1: Customize the main reinforcement beam sleeves according to the specifications of the crossbeams and side beams, and make corresponding mounting holes on the crossbeams and side beams. Then install the main reinforcement beam sleeves on the crossbeams and side beams through the mounting holes.

[0015] Step 2: After the main reinforcing beam sleeve is installed, the tightening mechanism is used to tighten each reinforcing steel strand in sequence. During the tightening process of the reinforcing steel strand, the reinforcing steel strand is squeezed by the pressure strip to make it move closer to the crossbeam. During the squeezing process, the reinforcing plate forces the adhesive stored in the adhesive storage bag to be squeezed out through the adhesive release hole and applied between the crossbeam and the reinforcing plate.

[0016] Step 3: Pour concrete into the U-shaped reinforcement space through the concrete injection hole. After the concrete has cured, the overall reinforcement of the crossbeam and side beams will be achieved.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention employs a beam reinforcement structure with multiple reinforcement methods working in tandem, which can more comprehensively reinforce the beam. At the same time, the various reinforcement methods are interconnected, which further improves the reinforcement effect compared to simply superimposing multiple reinforcement methods. It also simplifies the reinforcement operation steps and reduces the burden on operators. Attached Figure Description

[0019] Figure 1 This is an enlarged schematic diagram of the overall and partial structure of the present invention;

[0020] Figure 2 This is a cross-sectional schematic diagram of the main reinforcing beam sleeve installation structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the arrangement of the reinforcing steel strands according to the present invention;

[0022] Figure 4 This is a schematic diagram of the reinforcing steel strand clamp of the present invention.

[0023] Figure 5 This is a schematic diagram of the reinforced steel strand clamp of the present invention;

[0024] Figure 6 This is a schematic diagram of concrete being poured into the U-shaped reinforced space according to the present invention;

[0025] Figure 7 This is a schematic diagram of the clamping claw and the unidirectional rotating shaft of the present invention.

[0026] In the diagram: 1. Crossbeam, 2. Side beam, 3. Main reinforcing beam sleeve, 4. U-shaped reinforcing space, 5. Reinforcing steel strand, 6. Bolt assembly block, 7. Retractable fastening strip, 8. Assembly bolt, 9. Pressure strip, 10. Reinforcing plate, 11. Adhesive storage bag, 12. Adhesive release hole, 13. Concrete injection hole, 14. Sealing sleeve, 15. Operating channel, 16. Sealing block, 17. Fastening mechanism box, 18. Fastening turntable, 19. One-way rotating shaft, 20. Fastening knob, 21. Clamping claw, 22. Reinforcing angle steel, 21. Sealing rubber gasket. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-7 The present invention provides a technical solution:

[0029] Example 1:

[0030] A reinforced concrete beam reinforcement structure includes a main reinforcement beam sleeve 3 fitted on the outside of a crossbeam 1 and a side beam 2. A U-shaped reinforcement space 4 is provided inside the main reinforcement beam sleeve 3. Several reinforcement steel strands 5 are equidistantly arranged in the U-shaped reinforcement space 4 along the length of the main reinforcement beam sleeve 3. One end of the reinforcement steel strands 5 is fixedly connected to a bolt assembly block 6, and the end of the reinforcement steel strands 5 away from the bolt assembly block 6 is fixedly connected to a winding fastening band 7. The bolt assembly block 6 has bolt holes for inserting mounting bolts 8 on one side. The mounting bolts 8 are located on both sides of the main reinforcement beam sleeve 3. The winding fastening band 7 is connected to a fastening mechanism. The fastening mechanism winds up the winding fastening band 7 to pull the reinforcement steel strands 5 to reinforce the crossbeam 1.

[0031] Several reinforcing steel strands 5 are equipped with a pair of parallel pressure strips 9 on one side and at the bottom of the crossbeam 1. The pressure strips 9 are fixedly connected to the crossbeam 1 with a reinforcing plate 10. An adhesive storage bag 11 is also provided between the reinforcing plate 10 and the crossbeam 1. Adhesive release holes 12 are opened on both sides of the adhesive storage bag 11. During the process of reinforcing the crossbeam 1 with a clamp, the reinforcing steel strands 5 squeeze the adhesive storage bag 11, forcing the adhesive stored inside to be squeezed out through the adhesive release holes 12 and coated between the crossbeam 1 and the reinforcing plate 10.

[0032] A concrete injection hole 13 is also provided above the main reinforcing beam sleeve 3, through which concrete is filled into the U-shaped reinforcing space 4 of the main reinforcing beam sleeve 3.

[0033] In this embodiment, the main reinforcing beam sleeve 3 is nested at the bottom of the crossbeam 1 and the side beam 2 through the U-shaped reinforcing space 4, as shown in the appendix of the specification. Figure 1To ensure the sealing of the connection between the crossbeam 1 and the side beam 2 and the main reinforcing beam sleeve 3, a sealing sleeve opening 14 for embedding the crossbeam 1 is also provided on the main reinforcing beam sleeve 3. Sealing rubber gaskets 21 are installed on the inner side of the main reinforcing beam sleeve 3 at the sealing sleeve opening 14. The sealing rubber gaskets 21 effectively isolate the internal U-shaped reinforcing space 4 from the external environment. Multiple sets of reinforcing steel strands 5 are installed inside the main reinforcing beam sleeve 3. Unlike the existing full-circle clamping method, the reinforcing steel strands 5 in this embodiment adopt a three-sided ring design. The device uses a hoop-like design, with both ends connected to the main reinforcing beam sleeve 3. This type of wire bracing reinforcement can be applied to most crossbeams, greatly improving the adaptability of the device. Reinforcing plates 10 and pressure strips 9 are also installed between the reinforcing steel strands 5. During the tightening process, the reinforcing steel strands 5 push the reinforcing plates 10 and pressure strips 9 closer to one side of the crossbeam 1. At this time, the reinforcing plates 10 push the adhesive storage bag 11 to squeeze, ultimately forcing the internal adhesive to flow out through the adhesive release hole 12, finally pressing the reinforcing plates 10 tightly against the surface of the crossbeam 1. In addition to the wire reinforcement method, a reinforcement method by pasting reinforcement steel plates is introduced. Furthermore, after the reinforcement of the steel strands 5 is completed, concrete is filled into the U-shaped reinforcement space 4 through the concrete injection hole 13 opened above the main reinforcement beam sleeve 3, thereby increasing the cross-section of the beam for reinforcement. This collaborative reinforcement structure works together and simplifies the construction process. Compared with the prior art, the setting of the reinforcement steel strands 5 demonstrates the inventiveness of this application. Its three-sided ring hoop reinforcement method can be applied to most beam 1 structures. At the same time, it also serves as an adhesive extrusion mechanism, completing the installation of the reinforcement plate 10 during the ring hoop process. In addition, when pouring concrete into the U-shaped reinforcement space 4, the reinforcement steel strands 5 set in the ring hoop can also serve as the skeleton structure of the pouring layer, thereby improving the bonding strength between the pouring concrete and the beam 1. Therefore, the combination of the above-mentioned multiple reinforcement methods is different from the simple superposition of various individual reinforcement methods, but achieves a 1+1>2 effect.

[0034] Example 2:

[0035] The main reinforcing beam sleeve 3 is also provided with several operating channels 15 that are equidistant from the interior of the U-shaped reinforcing space 4. The number of operating channels 15 is the same as the number of reinforcing steel strands 5, and they correspond one-to-one. A sealing block 16 is detachably installed on the outside of the operating channel 15.

[0036] To facilitate the adjustment of the internal reinforcing steel strands 5 after the main reinforcing beam sleeve 3 is installed, an operating channel 15 is opened to allow operators to adjust the internal structure of the U-shaped reinforcing space 4, thereby facilitating the adjustment work before concrete pouring. When concrete needs to be poured, the operating channel 15 is sealed with a sealing block 16.

[0037] Example 3:

[0038] The fastening mechanism includes a fastening mechanism box 17 located inside the main reinforcing beam sleeve 3. A fastening turntable 18 is movably installed inside the fastening mechanism box 17. The fastening turntable 18 is coaxially connected to the fastening knob 20 via a one-way rotating shaft 19. The fastening knob 20 is located in a fastening hole opened on the outside of the main reinforcing beam sleeve 3. A clamping claw 21 that cooperates with the one-way rotating shaft 19 is also installed on the fastening mechanism box 17. The clamping claw 21 is used to limit the reverse rotation of the one-way rotating shaft.

[0039] In this embodiment, the specific structure of the fastening mechanism is further disclosed. Rotating the fastening knob 20 drives the fastening turntable 18 to rotate in one direction. This rotation of the fastening turntable 18 winds the reinforcing steel strand 5, ultimately achieving the reinforcement of the crossbeam 1 by the reinforcing steel strand 5. To prevent the unidirectional rotating shaft 19 from rotating back, a clamping claw 21 is also provided on the unidirectional rotating shaft 19. (Refer to the attached specification.) Figure 7 This method effectively maintains the tightened state of the reinforcing steel strand 5.

[0040] Example 4:

[0041] The bottom sides of the main reinforcing beam sleeve 3 are also equipped with reinforcing angle steel 22. In this embodiment, another method of reinforcing the crossbeam 1 is introduced. By setting the reinforcing angle steel 22 at the bottom of the main reinforcing beam sleeve 3, the crossbeam 1 is supported.

[0042] A method for strengthening reinforced concrete beams, using the aforementioned reinforced concrete beam strengthening structure, includes the following steps:

[0043] Step 1: Customize the main reinforcing beam sleeve 3 according to the specifications of the crossbeam 1 and the side beam 2, and open the corresponding mounting holes on the crossbeam 1 and the side beam 2. Then install the main reinforcing beam sleeve 3 on the crossbeam 1 and the side beam 2 through the mounting holes.

[0044] Step 2: After the main reinforcing beam sleeve 3 is installed, the fastening operation of each reinforcing steel strand 5 is completed in sequence through the fastening mechanism. During the fastening process of the reinforcing steel strand 5, the reinforcing steel strand 5 is squeezed by the pressure strip 9 to make the reinforcing plate 10 move closer to the crossbeam 1. During the squeezing process, the reinforcing plate 10 forces the adhesive stored in the adhesive storage bag 11 to be squeezed out through the adhesive release hole 12 and coated between the crossbeam 1 and the reinforcing plate 10.

[0045] Step 3: Concrete is poured into the U-shaped reinforcement space 4 through the concrete injection hole 13. After the concrete has cured, the overall reinforcement of the crossbeam 1 and the side beam 2 is achieved.

[0046] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforced concrete beam reinforcement structure, comprising a main reinforcement beam sleeve fitted onto the outside of the crossbeam and side beams, characterized in that: The main reinforcing beam sleeve has a U-shaped reinforcing space. Several reinforcing steel strands are equidistantly arranged in the U-shaped reinforcing space along the length of the main reinforcing beam sleeve. One end of each reinforcing steel strand is fixedly connected to a bolt assembly block, and the end of the reinforcing steel strand away from the bolt assembly block is fixedly connected to a winding fastening band. The bolt assembly block has bolt holes for inserting mounting bolts on one side. The mounting bolts are located on both sides of the main reinforcing beam sleeve. The winding fastening band is connected to a fastening mechanism. The fastening mechanism winds up the winding fastening band to pull the reinforcing steel strands and reinforce the crossbeam. Several of the reinforcing steel strands are equipped with a pair of parallel pressure strips on one side and at the bottom of the crossbeam. Each pressure strip is fixedly connected to a reinforcing plate. An adhesive storage bag is also provided between the reinforcing plate and the crossbeam. Adhesive release holes are opened on both sides of the adhesive storage bag. During the process of the reinforcing steel strands clamping and reinforcing the crossbeam, they squeeze the adhesive storage bag, forcing the adhesive stored inside to be squeezed out through the adhesive release holes and coated between the crossbeam and the reinforcing plate. A concrete injection hole is also provided above the main reinforcing beam sleeve, through which concrete is filled into the U-shaped reinforcing space of the main reinforcing beam sleeve; The fastening mechanism includes a fastening mechanism box disposed inside the main reinforcing beam sleeve. A fastening turntable is movably installed inside the fastening mechanism box. The fastening turntable is coaxially connected to a fastening knob via a one-way rotating shaft. The fastening knob is located in a fastening hole opened on the outside of the main reinforcing beam sleeve. A clamping claw that cooperates with the one-way rotating shaft is also installed on the fastening mechanism box. The clamping claw is used to restrict the reverse rotation of the one-way rotating shaft.

2. The reinforced concrete beam reinforcement structure according to claim 1, characterized in that: The main reinforcing beam sleeve is also provided with a sealing sleeve opening for embedding the crossbeam, and a sealing rubber gasket is installed on the inner side of the main reinforcing beam sleeve at the sealing sleeve opening.

3. A reinforced concrete beam reinforcement structure according to claim 1 or 2, characterized in that: The main reinforcing beam sleeve is also provided with several operating channels that are equidistant from the interior of the U-shaped reinforcing space. The number of operating channels corresponds one-to-one with the number of reinforcing steel strands. A sealing block is detachably installed on the outside of each operating channel.

4. The reinforced concrete beam reinforcement structure according to claim 3, characterized in that: Reinforcing angle steel is also installed on both sides of the bottom of the main reinforcing beam sleeve.

5. A method for strengthening reinforced concrete beams, employing the reinforced concrete beam strengthening structure described in any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Customize the main reinforcement beam sleeves according to the specifications of the crossbeams and side beams, and make corresponding mounting holes on the crossbeams and side beams. Then install the main reinforcement beam sleeves on the crossbeams and side beams through the mounting holes. Step 2: After the main reinforcing beam sleeve is installed, the tightening mechanism is used to tighten each reinforcing steel strand in sequence. During the tightening process of the reinforcing steel strand, the reinforcing steel strand is squeezed by the pressure strip to make it move closer to the crossbeam. During the squeezing process, the reinforcing plate forces the adhesive stored in the adhesive storage bag to be squeezed out through the adhesive release hole and applied between the crossbeam and the reinforcing plate. Step 3: Pour concrete into the U-shaped reinforcement space through the concrete injection hole. After the concrete has cured, the overall reinforcement of the crossbeam and side beams will be achieved.

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