Anchoring and bonding reinforcing device for reinforced concrete beam

Abstract

The utility model relates to a reinforced concrete beam anchoring and adhering reinforcing device which comprises a reinforced concrete beam to be reinforced, a U-shaped steel plate hoop is arranged on the outer surface of the reinforced concrete beam 1 to be reinforced, a longitudinal steel plate is arranged on the bottom face, and a batten steel plate is arranged on the side face. The longitudinal steel plate and the batten steel plate are both arranged between the reinforced concrete beam to be reinforced and the U-shaped steel plate hoop, the U-shaped steel plate hoop is arranged between the reinforced concrete beam to be reinforced and the batten steel plate, and the U-shaped steel plate hoop, the longitudinal steel plate and the batten steel plate are all fixed to the reinforced concrete beam to be reinforced through anchor bolts. The outer surface of the reinforced concrete to be reinforced is coated with a structural adhesive layer. According to the method, the steel plate is reinforced and fixed through the glue and the bolts, the defects of brittle failure of the sticky steel and ductile failure of the bolt steel plate can be effectively overcome, so that the sticky steel and the bolt steel plate have complementarity together, the reinforcing requirement of the reinforced concrete beam of the house building project is better met, and the better reinforcing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering construction, in particular to a reinforced concrete beam anchor bonding reinforcement device. Background Art

[0002] Concrete structures are the most commonly used structures in various industrial and civil buildings, structures, bridges, culverts and tunnels. Due to various reasons, such as aging, damage, and low original design standards of concrete structures, the strength (bearing capacity) and stiffness of concrete structures cannot meet the requirements of normal use. Strengthening existing concrete structures, improving their bearing capacity and extending their service life has become a widely concerned engineering and technical issue.

[0003] In real life, some housing construction projects have failed to meet the requirements for safe use of the structure after reliability judgment and assessment due to design, construction reasons, disrepair, material aging, natural erosion and other factors. Therefore, measures need to be taken to strengthen them in order to improve the safety performance of the overall structure of the housing construction project and extend its service life. However, with the rapid development of the construction industry, structural reinforcement has also received attention from people, and there are more and more ways and types of structural reinforcement technologies. Among them, carbon fiber reinforcement technology, steel plate bonding technology, and increased component cross-section technology have become the most commonly used structural reinforcement methods. Although they can effectively improve the ultimate bearing capacity of the structure in the destruction stage, capacity, but the effect of improving the bearing capacity and stiffness of the structure during normal use is not obvious; and the traditional fixing device adopts a vertical support at the bottom of the beam, which often affects the use of the space under the reinforced beam, and it is labor-consuming and time-consuming to add the support. In some other reinforcement methods, the reinforcement device is often permanently reinforced on the component to be reinforced as a part of the reinforced component, which is not economical. The above commonly used reinforcement methods are subject to certain restrictions in terms of stripping damage, construction environment and conditions. Therefore, it is necessary to develop a new main structure reinforcement technology to meet people's long-term and functional use of reinforced building structures. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a reinforced concrete beam anchor bonding reinforcement device, which can be used to reinforce the reinforced concrete beam and is suitable for building projects where special parts of the reinforced concrete beam are reinforced.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A reinforced concrete beam anchor reinforcement device comprises a reinforced concrete beam to be reinforced, wherein the outer surface of the reinforced concrete beam to be reinforced 1 is provided with a U-shaped steel plate hoop, a longitudinal steel plate is provided on the bottom surface, and a layer steel plate is provided on the side, the longitudinal steel plate and the layer steel plate are both arranged between the reinforced concrete beam to be reinforced and the U-shaped steel plate hoop, the U-shaped steel plate hoop is arranged between the reinforced concrete beam to be reinforced and the layer steel plate, the U-shaped steel plate hoop, the longitudinal steel plate and the layer steel plate are all fixed to the reinforced concrete beam to be reinforced by anchor bolts, and the outer surface of the reinforced concrete to be reinforced is coated with a structural adhesive layer.

[0007] There are multiple U-shaped steel plate hoops, which are evenly arranged on the outer surface of the reinforced concrete beam to be reinforced.

[0008] There are two longitudinal steel plates, which are arranged along the length direction of the reinforced concrete beam to be reinforced.

[0009] The thickness of the longitudinal steel plate and the layering steel plate are both 2-6 mm, there are multiple anchor bolts, and the spacing between the anchor bolts is 100 mm-400 mm.

[0010] The U-shaped steel plate hoop, the longitudinal steel plate, the pressure strip steel plate and the anchor bolt are all coated with a structural adhesive layer, and the thickness of the structural adhesive layer is 1-3 mm.

[0011] The beneficial effects of the utility model are:

[0012] 1. The method of reinforcing and fixing steel plates by gluing and bolting can effectively overcome the weaknesses of brittle failure of bonded steel and ductile failure of bolted steel plates, thereby making the coexistence of bonded steel and bolted steel plates complementary, so as to better meet the reinforcement needs of reinforced concrete beams in building construction projects and obtain better reinforcement effects.

[0013] 2. By sticking high-strength reinforcing steel plates on the surface of the reinforced concrete beams to be reinforced and establishing prestress, this can not only enhance the bearing capacity of the concrete structure, but also greatly improve the rigidity and crack resistance of the concrete structure.

[0014] 3. By gluing steel plates to reinforced concrete beams and pressurizing and fixing them, a simple and economical fixing device is provided for reinforcing reinforced concrete beams. The reinforced concrete beam structure can greatly improve the bearing capacity, stiffness and crack resistance of the structure during normal use.

[0015] 4. Compared with traditional supports, it saves more space at the bottom of the beam and construction time. Compared with the permanent fixing devices commonly used now, it can be recycled to achieve the purpose of economy and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 Cross-sectional view of AA in the middle;

[0018] As shown in the figure: 1- reinforced concrete beam to be reinforced; 2- U-shaped steel plate hoop; 3- longitudinal steel plate; 4- pressure strip steel plate; 5- anchor bolt. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figures 1 to 2 As shown, a reinforced concrete beam anchoring reinforcement device comprises a reinforced concrete beam 1 to be reinforced, the outer surface of the reinforced concrete beam 1 to be reinforced is provided with a U-shaped steel plate hoop 2, a longitudinal steel plate 3 is provided on the bottom surface, and a layer steel plate 4 is provided on the side, the longitudinal steel plate 3 and the layer steel plate 4 are both arranged between the reinforced concrete beam 1 to be reinforced and the U-shaped steel plate hoop 2, the U-shaped steel plate hoop 2 is arranged between the reinforced concrete beam 1 to be reinforced and the layer steel plate 4, the U-shaped steel plate hoop 2, the longitudinal steel plate 3 and the layer steel plate 4 are all fixed to the reinforced concrete beam 1 to be reinforced by anchor bolts 5, and the outer surface of the reinforced concrete beam 1 to be reinforced is coated with a structural adhesive layer.

[0021] There are multiple U-shaped steel plate hoops 2, which are evenly arranged on the outer surface of the reinforced concrete beam 1 to be reinforced.

[0022] There are two longitudinal steel plates 3 , which are arranged along the length direction of the reinforced concrete beam 1 to be reinforced.

[0023] The thickness of the longitudinal steel plate 3 and the layering steel plate 4 are both 2-6 mm, there are multiple anchor bolts 5, and the spacing between the anchor bolts 5 is 100 mm-400 mm.

[0024] The U-shaped steel plate hoop 2, the longitudinal steel plate 3, the pressure strip steel plate 4 and the anchor bolt 5 are all coated with a structural adhesive layer, and the thickness of the structural adhesive layer is 1-3 mm.

[0025] First, drill holes at the bottom or side of the reinforced concrete beam to be reinforced, then apply structural adhesive at the bottom or side of the beam to bond the steel bars, and finally tighten the steel plate with bolts. The process steps are as follows:

[0026] 1. Surface cleaning of reinforced concrete beam 1 to be reinforced

[0027] If there is floating oil or dirt on the bonding surface of the reinforced concrete beam 1 to be reinforced, first use a hard-bristled brush dipped in acetone to brush off the floating oil or dirt on the surface, then rinse with cold water, and then grind the bonding surface until the new surface is completely exposed, and use compressed air to blow off the powder particles. If there are local unevenness on the beam surface, it can be repaired with high-strength resin mortar.

[0028] 2. Pre-drilling of reinforced concrete beams and steel plates

[0029] Determine the reinforcement position of the anchor bolts 5 on the reinforced concrete beam 1 and the steel plate (longitudinal steel plate 3 and layer steel plate 4) to be reinforced. The spacing between the anchor bolts 5 can be 100mm-400mm. Use drilling tools to drill holes in the reinforced concrete beam 1 and the steel plate to be reinforced, and make the positions of the drill holes of the two consistent to ensure that the anchor bolts are effectively implanted. The holes in the beams must be cleaned in time after drilling.

[0030] 3. Bonding and fixing of the bottom longitudinal steel plate 3

[0031] Use a spatula to apply the structural adhesive to the bottom surface of the reinforced concrete beam 1 to be reinforced and the bonding surface of the steel plate. In order to allow the adhesive to fully infiltrate, penetrate, diffuse and adhere to the bonding surface, it is advisable to first use a small amount of adhesive to scrape back and forth on the bonding surface several times, then add more glue to the required thickness of 1-3mm, and then stick the steel plate to the entire bottom surface of the beam to ensure that the steel plate is fully covered.

[0032] 4. Installation of anchor bolts at the bottom of reinforced concrete beams

[0033] After the reinforced concrete beam 1 to be reinforced is bonded to the longitudinal steel plate 3, inorganic glue is applied to the inside of the beam hole and on the anchor bolt 5, and then the anchor bolt 5 is installed. The anchor bolt 5 fixes the steel plate on the reinforced concrete beam 1 to be reinforced. At the same time, the steel plate is properly pressurized by tightening the anchor bolt 5, and the structural glue is squeezed out from the edge of the steel plate.

[0034] 5. Bonding and fixing of the side layer steel plate 4 of the reinforced concrete beam 1 to be reinforced

[0035] Apply structural adhesive to the side surfaces of the reinforced concrete beam 1 to be fixed and the bonding surface of the layered steel plate 4 respectively, lay the layered steel plate 4 at a predetermined position, and ensure that the layered steel plate 4 is bonded and fixed to the reinforced concrete beam 1 to be fixed, wherein the laying spacing of the layered steel plate 4 is determined in combination with the actual height of the beam.

[0036] 6. Installation of U-shaped steel plate hoop 2

[0037] After the structural adhesive is applied to the inner surface of the U-shaped steel plate hoop 2, the U-shaped steel plate hoop 2 is first bonded and fixed to the longitudinal steel plate 3 and the layer steel plate 4 at a certain interval, and then the U-shaped steel plate hoop 2 and the layer steel plate 4 are connected and fixed by the anchor bolt 5.

[0038] 7. After the anchoring and bonding reinforcement of the reinforced concrete beam 1 is completed, anti-rust paint is applied on the surface of the beam U-shaped steel plate hoop 2, the longitudinal steel plate 3 and the pressure strip steel plate 4.

[0039] The method of reinforcing and fixing steel plates by gluing and bolting can effectively overcome the weaknesses of brittle failure of bonded steel and ductile failure of bolted steel plates, thereby making the coexistence of bonded steel and bolted steel plates complementary, so as to better meet the reinforcement needs of reinforced concrete beams in building construction projects and obtain better reinforcement effects.

[0040] By sticking high-strength reinforcing steel plates on the surface of the reinforced concrete beams to be reinforced and establishing prestress, this can not only enhance the bearing capacity of the concrete structure, but also greatly improve the stiffness and crack resistance of the concrete structure.

[0041] By gluing steel plates to pressurize and fix reinforced concrete beams, a simple and economical fixing device is provided for reinforcing reinforced concrete beams. The reinforced concrete beam structure can greatly improve the bearing capacity, stiffness and crack resistance of the structure during normal use.

[0042] Compared with traditional supports, it saves more space at the bottom of the beam and construction time. Compared with the permanent fixing devices commonly used now, it can be recycled to achieve the purpose of economy and environmental protection.

[0043] The construction method of reinforced concrete beam anchor bonding reinforcement is as follows:

[0044] 1. Draw reinforcement drawings as required and provide safety and technical briefings to operators.

[0045] 2. Clean the surface of the reinforced concrete beam that needs to be reinforced. If there are local unevenness on the beam surface, it can be repaired with high-strength resin mortar.

[0046] 3. Lay out the reinforced concrete beam 1 to be reinforced, mark the positions of the pressure strip steel plate 4, U-shaped steel plate hoop 2, longitudinal steel plate 3 and anchor bolt holes, and use drilling tools to drill holes in the reinforced concrete beam 1 and steel plate to be reinforced to ensure that the positions of the anchor bolt holes and steel plate holes correspond.

[0047] Fourth, the bottom of the reinforced concrete beam 1 to be reinforced is reinforced with a steel plate. First, structural adhesive is used to bond and fix the bottom surface of the reinforced concrete beam 1 to be reinforced and the longitudinal steel plate 3. Then, the structural adhesive is applied to the anchor bolts and the anchor bolt holes at the bottom of the beam, and the anchor bolts are implanted in the anchor bolt holes.

[0048] Fifth, structural adhesive is applied to the laying position of the layered steel plate 4 on the side of the reinforced concrete beam 1 to be reinforced, and the layered steel plate 4 is bonded and fixed to the predetermined position on the side of the beam.

[0049] 6. Use structural adhesive to apply on the inner surface of the U-shaped steel plate hoop 2, adhere and fix the U-shaped steel plate hoop 2 to the predetermined position on the side of the beam, then use structural adhesive to apply the anchor bolts and the anchor bolt holes on the side of the beam, and implant the anchor bolts into the anchor bolt holes.

[0050] 7. Apply anti-rust paint to the surfaces of the U-shaped steel plate hoop 2, the longitudinal steel plate 3 and the layering steel plate 5, and dry them in the sun for 2-3 days.

[0051] 8. Repeat steps 2 to 7 to reinforce other reinforced concrete beams in turn.

[0052] 9. After the anchoring and bonding reinforcement of reinforced concrete beams is completed, relevant personnel shall be organized to carry out quality acceptance.

[0053] This construction method is simple and quick to operate, and operators can start operation after training.

[0054] This construction method uses anchor bolts and bonding construction technology on concrete beams, which can further improve the overall bearing capacity and safety of the reinforced beams compared to traditional construction methods, while increasing the service life of the reinforced beams.

[0055] This construction method only requires anchor bolt connection and bonding fixation, and does not require steel plate welding, thus achieving the purpose of being green and environmentally friendly, and has a high value for promotion and application.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reinforced concrete beam anchoring reinforcement device, comprising a reinforced concrete beam to be reinforced (1), characterized in that: The outer surface of the reinforced concrete beam (1) to be reinforced is provided with a U-shaped steel plate hoop (2), the bottom surface is provided with a longitudinal steel plate (3), and the side surface is provided with a layered steel plate (4); the longitudinal steel plate (3) and the layered steel plate (4) are both provided between the reinforced concrete beam (1) to be reinforced and the U-shaped steel plate hoop (2); the U-shaped steel plate hoop (2) is provided between the reinforced concrete beam (1) to be reinforced and the layered steel plate (4); the U-shaped steel plate hoop (2), the longitudinal steel plate (3) and the layered steel plate (4) are all fixed to the reinforced concrete beam (1) to be reinforced by anchor bolts (5); and the outer surface of the reinforced concrete beam (1) to be reinforced is coated with a structural adhesive layer.

2. A reinforced concrete beam anchor bonding reinforcement device as claimed in claim 1, characterized in that: There are multiple U-shaped steel plate hoops (2) which are evenly arranged on the outer surface of the reinforced concrete beam (1) to be reinforced.

3. A reinforced concrete beam anchoring reinforcement device as claimed in claim 1, characterized in that: There are two longitudinal steel plates (3), which are arranged along the length direction of the reinforced concrete beam (1) to be reinforced.

4. A reinforced concrete beam anchor bonding reinforcement device as claimed in claim 1, characterized in that: The thickness of the longitudinal steel plate (3) and the layering steel plate (4) are both 2-6 mm, there are a plurality of anchor bolts (5), and the spacing between the anchor bolts (5) is 100 mm-400 mm.

5. A reinforced concrete beam anchor bonding reinforcement device as claimed in claim 1, characterized in that: The U-shaped steel plate hoop (2), the longitudinal steel plate (3), the pressure strip steel plate (4) and the anchor bolt (5) are all coated with a structural adhesive layer, and the thickness of the structural adhesive layer is 1-3 mm.

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