Composite anchoring FRP reinforced concrete bending reinforcing member and reinforcing method

Abstract

The invention discloses a composite anchoring FRP reinforced concrete bending reinforcing member and a reinforcing method, and particularly relates to the technical field of member reinforcing, the composite anchoring FRP reinforced concrete bending reinforcing member comprises a reinforced concrete bending member, an embedded shallow groove is transversely formed in the lower surface of the reinforced concrete bending member, a transverse FRP reinforcing steel bar is semi-embedded in the embedded shallow groove, and the transverse FRP reinforcing steel bar is semi-embedded in the embedded shallow groove. Fastening assemblies are arranged at the two ends of the transverse FRP reinforcing steel bars and fixed to the lower surface of the reinforced concrete flexural member, auxiliary supporting assemblies are vertically arranged below the transverse FRP reinforcing steel bars, and the two ends of each auxiliary supporting assembly are fixed to the lower surface of the reinforced concrete flexural member. Anchoring assemblies are arranged at the staggered positions of the transverse FRP reinforcing steel bars and the auxiliary supporting assemblies, and the multiple transverse FRP reinforcing steel bars are fastened by arranging the fastening assemblies, so that the multiple transverse FRP reinforcing steel bars are semi-embedded into the embedded shallow grooves to reinforce the reinforced concrete flexural member.

Description

Technical Field

[0001] This invention relates to the field of structural reinforcement technology, specifically to a composite anchored FRP reinforced concrete flexural reinforcement member and reinforcement method. Background Technology

[0002] As the main structural form of modern buildings, reinforced concrete structures often experience varying degrees of degradation in load-bearing capacity and performance during long-term use due to environmental erosion, material aging, and load changes. Existing reinforced concrete components, especially flexural components (such as beams and slabs), need to be reinforced. Among them, fiber-reinforced composite materials (FRP) have gradually become a new type of reinforcement material to replace traditional metal materials due to their excellent properties such as high strength, high modulus, lightweight, corrosion resistance, and fatigue resistance, and are widely used in the reinforcement of reinforced concrete flexural components.

[0003] When traditionally strengthening FRP (Fiberglass Reinforced Polymer) materials under flexural stress, they are typically bonded to the surface of the tension zone of the member using adhesives to participate in the cross-sectional stress, improve the member's flexural bearing capacity and stiffness, or form a collaborative working system with the concrete substrate through implantation or embedding methods. However, fixing FRP reinforcement solely through adhesive bonding results in relatively limited bond strength. Under load, the member often fails due to premature delamination of the concrete-FRP interface, and the high strength performance of FRP cannot be fully utilized. To address these issues, we propose a composite anchored FRP reinforced concrete flexural strengthening member and strengthening method. Summary of the Invention

[0004] The purpose of this invention is to provide a composite anchored FRP reinforced concrete flexural strengthening member 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: a composite anchored FRP reinforced concrete flexural strengthening member, comprising a reinforced concrete flexural member, wherein a shallow groove is laterally formed on the lower surface of the reinforced concrete flexural member, and a transverse FRP reinforcing bar is partially embedded in the shallow groove; both ends of the transverse FRP reinforcing bar are provided with fastening components, which are fixed to the lower surface of the reinforced concrete flexural member; an auxiliary support component is vertically provided below the transverse FRP reinforcing bar, and both ends of the auxiliary support component are fixed to the lower surface of the reinforced concrete flexural member; anchoring components are provided at the intersection of the transverse FRP reinforcing bar and the auxiliary support component, and the anchoring components are fixed to the lower surface of the reinforced concrete flexural member.

[0006] As a preferred embodiment of the present invention, the fastening assembly includes a first retaining seat and a first sleeve. Multiple first sleeves are provided. One end of the transverse FRP reinforcing bar is movably engaged in the first sleeve. A first fastening rod is provided at the bottom of the first sleeve. A first protrusion is integrally formed on the top of the first fastening rod. The first fastening rod and the first protrusion are vertically engaged on the first retaining seat. The end of the first fastening rod away from the first sleeve passes through the first retaining seat and is threaded with a first fastening nut. A first mounting rod is integrally formed on the end of the first fastening rod away from the first fastening nut. Multiple first screw cylinders are vertically provided at the bottom of the first sleeve. The multiple first screw cylinders vertically penetrate the first mounting rod. A first nut is threaded on both the top and bottom of the first screw cylinder. The first mounting rod is located between two first nuts. A first fixing frame is provided on the inner bottom of the first sleeve. The upper surface of the first fixing frame contacts the outer wall of the transverse FRP reinforcing bar. A first positioning bolt is threaded in the first screw cylinder. The end of the first positioning bolt extends into the first sleeve and is movably engaged with the bottom of the first fixing frame.

[0007] As a preferred embodiment of the present invention, both ends of the first card holder are threaded with a first fixing bolt, and the first fixing bolt is fixed in a reinforced concrete bending member.

[0008] As a preferred embodiment of the present invention, the auxiliary support assembly includes a fixed seat and a second retaining seat. A longitudinal FRP reinforcing bar is provided between the fixed seat and the second retaining seat. The longitudinal FRP reinforcing bar and the transverse FRP reinforcing bar are arranged perpendicularly. The longitudinal FRP reinforcing bar is located below the transverse FRP reinforcing bar. A second sleeve is vertically provided on the outer side of the fixed seat. One end of the longitudinal FRP reinforcing bar is movably engaged in the second sleeve. A second fixed frame is provided on the bottom inner side of the second sleeve. The upper surface of the second fixed frame contacts the outer wall of the longitudinal FRP reinforcing bar. A second positioning bolt is vertically installed at the bottom of the second sleeve. The end of the second positioning bolt extends into the second sleeve and is movably engaged at the bottom of the second fixed frame.

[0009] As a preferred embodiment of the present invention, a plurality of second fastening rods are vertically provided on the second clamping seat. A second protrusion is integrally formed on the top of the second fastening rod. The second fastening rod and the second protrusion are vertically clamped on the second clamping seat. A second fastening nut is threadedly installed on the end of the second fastening rod away from the longitudinal FRP reinforcing bar. A second mounting rod is integrally formed on the end of the second fastening rod close to the longitudinal FRP reinforcing bar. A third sleeve is provided at the top of the second mounting rod. A plurality of third screw cylinders are vertically provided at the bottom of the third sleeve. The plurality of third screw cylinders vertically penetrate the second mounting rod. A third nut is threadedly installed at the bottom of the third screw cylinder. A third fixing frame is provided on the inner bottom of the third sleeve. The upper surface of the third fixing frame contacts the outer wall of the longitudinal FRP reinforcing bar. A third positioning bolt is threadedly installed in the third screw cylinder. The end of the third positioning bolt extends into the third sleeve and is movably clamped at the bottom of the third fixing frame.

[0010] As a preferred embodiment of the present invention, both ends of the fixed seat and the second card seat are threaded with a second fixing bolt, and the second fixing bolt is fixed in the reinforced concrete bending member.

[0011] As a preferred embodiment of the present invention, the anchoring assembly includes an anchoring base frame. The upper surface of the anchoring base frame has a longitudinal groove corresponding to the longitudinal FRP reinforcing bar, and the longitudinal FRP reinforcing bar is movably engaged in the corresponding longitudinal groove. The upper surface of the anchoring base frame has a transverse groove corresponding to the transverse FRP reinforcing bar, and the transverse FRP reinforcing bar is movably engaged in the corresponding transverse groove. The bottom ends of the anchoring base frame at the intersection of the longitudinal and transverse grooves are threaded with inner top bolts. The bottom end of the anchoring base frame is fixedly secured with two injection pipes, and the top of the injection pipes is connected to the longitudinal groove.

[0012] As a preferred embodiment of the present invention, rivets are provided at all four corners of the anchoring base frame, and the rivets are fixed in the reinforced concrete bending member.

[0013] As a preferred embodiment of the present invention, the reinforcing component further includes an injection assembly, which includes a tee pipe. L-shaped bends are fixedly installed at both ends of the tee pipe. A connecting protrusion is integrally formed at the end of each L-shaped bend. An installation screw is movably sleeved on the outer side of the connecting protrusion. A sealing gasket is provided at the top of the connecting protrusion. A guiding hose is fixedly installed at the bottom of the tee pipe. The injection assembly is threaded onto the bottom of the injection pipe in the corresponding anchoring assembly via two installation screws. The injection assembly contacts the bottom end of the injection pipe in the corresponding anchoring assembly through the upper surface of the sealing gasket.

[0014] A method for strengthening composite anchored FRP reinforced concrete flexural members includes the following steps: Step 1: Open a shallow groove in the lower surface of the reinforced concrete bending member, and fix the two fastening components to the two ends of the reinforced concrete bending member respectively using the first fixing bolt. Subsequently, the ends of multiple transverse FRP reinforcing bars are fixed in the first sleeve of the corresponding fastening assembly. Then, the first fastening nut is manually rotated using a tool to gradually tighten the multiple transverse FRP reinforcing bars, and the transverse FRP reinforcing bars are half-embedded in the embedded shallow groove to reinforce the reinforced concrete bending member. Step 2: Install multiple auxiliary support components at equal intervals below the reinforced concrete bending member, and fix the fixed seat and the second bracket to both ends of the reinforced concrete bending member respectively using the second fixing bolts. Subsequently, one end of multiple longitudinal FRP reinforcing bars is fixed in the second sleeve, and the other end of multiple longitudinal FRP reinforcing bars is fixed in the third sleeve. Then, the second fastening nut is manually turned with a tool to gradually tighten the multiple longitudinal FRP reinforcing bars. At this time, the longitudinal FRP reinforcing bars are located below the transverse FRP reinforcing bars, and the longitudinal FRP reinforcing bars provide auxiliary support for the multiple transverse FRP reinforcing bars. Step 3: Fix the anchoring bottom frame to the reinforced concrete bending member using rivets, and make the longitudinal FRP reinforcing bars movable in the corresponding longitudinal grooves and the transverse FRP reinforcing bars movable in the corresponding transverse grooves. Subsequently, the inner top bolt is rotated to control the inner top bolt to move upward, so that the end of the inner top bolt abuts against the longitudinal FRP reinforcing bar, making the longitudinal FRP reinforcing bar and the transverse FRP reinforcing bar in close contact, and fixing the position of the longitudinal FRP reinforcing bar and the transverse FRP reinforcing bar, thereby making multiple longitudinal FRP reinforcing bars provide stable support for multiple transverse FRP reinforcing bars. Step 4: After the anchoring bottom frame has fixed the position of the longitudinal FRP reinforcing bars and the transverse FRP reinforcing bars, install the injection assembly into the bottom of the injection tube in the corresponding anchoring assembly through two mounting screws, so that the upper surface of the sealing gasket contacts the bottom end of the injection tube in the corresponding anchoring assembly. Subsequently, the end of the guide hose is connected to the output pump on the reinforcement slurry storage system. The output pump on the reinforcement slurry storage system is turned on. The reinforcement slurry is introduced into the longitudinal and transverse grooves through the guide hose, tee pipe, L-shaped bends on both sides and corresponding injection pipes, and gradually enters the embedded shallow groove to reinforce the longitudinal and transverse FRP reinforcement bars with slurry.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting fastening components to fasten multiple transverse FRP reinforcing bars, the multiple transverse FRP reinforcing bars are semi-embedded in the shallow groove to reinforce the reinforced concrete bending member.

[0016] 2. By setting up auxiliary support components, multiple longitudinal FRP reinforcing bars are tightened, so that multiple longitudinal FRP reinforcing bars support multiple transverse FRP reinforcing bars, thereby improving the reinforcement effect of multiple transverse FRP reinforcing bars on reinforced concrete bending members.

[0017] 3. By setting anchoring components, the longitudinal FRP reinforcing bars and transverse FRP reinforcing bars are fixed in position, thereby enabling multiple longitudinal FRP reinforcing bars to stably support multiple transverse FRP reinforcing bars.

[0018] 4. By setting up injection components, longitudinal and transverse FRP reinforcement bars are reinforced with grout, further improving the reinforcement effect on reinforced concrete bending members. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the reinforcing component in this invention.

[0022] Figure 3 This is a schematic diagram of the structural connection between the transverse FRP reinforcing steel bars and fastening components in this invention.

[0023] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0024] Figure 5 This is a schematic diagram of the structural connection between the first sleeve and the first fastening rod in this invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.

[0026] Figure 7 This is a schematic diagram of the structural connection of the auxiliary support component in this invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle.

[0028] Figure 9 For the present invention Figure 7 Enlarged view of point D in the middle.

[0029] Figure 10 This is a schematic diagram of the structural connection of the anchoring component in this invention.

[0030] Figure 11 This is a schematic diagram of the injection assembly in this invention.

[0031] Figure 12 For the present invention Figure 11 Enlarged view of point E in the middle.

[0032] In the diagram: 1. Reinforced concrete flexural member; 101. Embedded shallow groove; 2. Transverse FRP reinforcing steel bar; 3. Fastening assembly; 4. Auxiliary support assembly; 5. Anchoring assembly; 6. Injection assembly; 31. First retaining seat; 32. First sleeve; 321. First screw; 33. First fastening rod; 331. First protruding strip; 332. First fastening nut; 333. First mounting rod; 34. First fixing frame; 341. First positioning bolt; 35. First nut; 36. First fixing bolt; 41. Fixing seat; 411. Second sleeve; 412. Second positioning bolt; 413. Second fixing frame; 42. 43. Longitudinal FRP reinforcing bar; 44. Second fastening rod; 441. Second protrusion; 442. Second fastening nut; 443. Second mounting rod; 45. Third sleeve; 451. Third screw; 452. Third nut; 46. Third fixed frame; 461. Third positioning bolt; 47. Second fixing bolt; 51. Anchoring bottom frame; 501. Longitudinal groove; 502. Transverse groove; 52. Rivet; 53. Inner top bolt; 54. Injection pipe; 61. T-shaped pipe; 62. L-shaped bend; 621. Connecting protrusion; 622. Sealing gasket; 63. Mounting screw; 64. Material guide hose. Detailed Implementation

[0033] 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.

[0034] Example: Figure 1-12As shown, the present invention provides a composite anchored FRP reinforced concrete flexural strengthening member, including a reinforced concrete flexural member 1. The lower surface of the reinforced concrete flexural member 1 has a transversely recessed shallow groove 101, in which transverse FRP reinforcing bars 2 are partially embedded. Multiple transverse FRP reinforcing bars 2 are used to strengthen the reinforced concrete flexural member 1. Both ends of the transverse FRP reinforcing bars 2 are provided with fastening components 3, which are fixed to the lower surface of the reinforced concrete flexural member 1. Auxiliary support components 4 are vertically provided below the transverse FRP reinforcing bars 2, and both ends of the auxiliary support components 4 are fixed to the lower surface of the reinforced concrete flexural member 1. Anchoring components 5 are provided at the intersection of the transverse FRP reinforcing bars 2 and the auxiliary support components 4, and the anchoring components 5 are fixed to the lower surface of the reinforced concrete flexural member 1.

[0035] The fastening assembly 3 includes a first retaining seat 31 and a first sleeve 32. Multiple first sleeves 32 are provided. One end of the transverse FRP reinforcing bar 2 is movably engaged in the first sleeve 32. A first fastening rod 33 is provided at the bottom of the first sleeve 32. A first protrusion 331 is integrally formed on the top of the first fastening rod 33. The first fastening rod 33 and the first protrusion 331 are vertically engaged on the first retaining seat 31, allowing the first fastening rod 33 to slide horizontally on the first retaining seat 31. The end of the first fastening rod 33 away from the first sleeve 32 passes through the first retaining seat 31 and is threaded with a first fastening nut 332. A first mounting rod 333 is integrally formed at the end of the first fastening rod 33 away from the first fastening nut 332. Multiple first screw cylinders 321 are vertically provided at the bottom of the first sleeve 32, and the multiple first screw cylinders 321 vertically penetrate the first mounting rod 333. The top and bottom of the first screw cylinder 321 are threaded with first nuts 35. The first mounting rod 333 is located between the two first nuts 35. The first screw cylinders 321 and the first mounting rod 333 are fixed by using the two first nuts 35. The bottom inner side of the first sleeve 32 is provided with a first fixing frame 34. The upper surface of the first fixing frame 34 contacts the outer wall of the transverse FRP reinforcing bar 2. The first screw cylinder 321 is threaded with a first positioning bolt 341. The end of the first positioning bolt 341 extends into the first sleeve 32 and is movably engaged with the bottom of the first fixing frame 34. By rotating the first positioning bolt 341, the first fixing frame 34 is controlled to move upward, so that the upper surface of the first fixing frame 34 contacts the outer wall of the transverse FRP reinforcing bar 2, and the end of the transverse FRP reinforcing bar 2 is fixed in the first sleeve 32.

[0036] Both ends of the first bracket 31 are threaded with first fixing bolts 36, which are fixed in the reinforced concrete bending member 1 to fix the fastening component 3 on the reinforced concrete bending member 1.

[0037] The auxiliary support component 4 includes a fixed seat 41 and a second retaining seat 42. A longitudinal FRP reinforcing bar 43 is provided between the fixed seat 41 and the second retaining seat 42. The longitudinal FRP reinforcing bar 43 and the transverse FRP reinforcing bars 2 are arranged perpendicularly, with the longitudinal FRP reinforcing bar 43 located below the transverse FRP reinforcing bars 2. By providing multiple longitudinal FRP reinforcing bars 43 to support multiple transverse FRP reinforcing bars 2, the reinforcement effect of the multiple transverse FRP reinforcing bars 2 on the reinforced concrete bending member 1 is improved. A second sleeve 411 is vertically provided on the outer side of the fixed seat 41, and one end of the longitudinal FRP reinforcing bar 43 is movably engaged with the second sleeve 411. In the two sleeves 411, a second fixed frame 413 is provided on the inner bottom of the second sleeve 411. The upper surface of the second fixed frame 413 contacts the outer wall of the longitudinal FRP reinforcing bar 43. A second positioning bolt 412 is vertically installed at the bottom of the second sleeve 411. The end of the second positioning bolt 412 extends into the second sleeve 411 and is movably engaged with the bottom of the second fixed frame 413. By rotating the second positioning bolt 412, the second fixed frame 413 is controlled to move upward, so that the upper surface of the second fixed frame 413 contacts the outer wall of the longitudinal FRP reinforcing bar 43, and one end of the longitudinal FRP reinforcing bar 43 is fixed in the second sleeve 411.

[0038] Multiple second fastening rods 44 are vertically arranged on the second clamping seat 42. A second protrusion 441 is integrally formed on the top of each second fastening rod 44. The second fastening rods 44 and the second protrusion 441 are vertically engaged with the second clamping seat 42, facilitating horizontal sliding on the second clamping seat 42. A second fastening nut 442 is threaded onto the end of the second fastening rod 44 furthest from the longitudinal FRP reinforcing bar 43. A second mounting rod 443 is integrally formed on the end of the second fastening rod 44 closest to the longitudinal FRP reinforcing bar 43. A third sleeve 45 is provided at the top of the second mounting rod 443, and multiple third screw cylinders 451 are vertically arranged at the bottom of the third sleeve 45. A third nut 452 is threaded onto the bottom of the third screw cylinder 451, which passes through the second mounting rod 443. A third fixing frame 46 is provided on the inner bottom of the third sleeve 45. The upper surface of the third fixing frame 46 contacts the outer wall of the longitudinal FRP reinforcing bar 43. A third positioning bolt 461 is threaded onto the third screw cylinder 451. The end of the third positioning bolt 461 extends into the third sleeve 45 and is movably engaged with the bottom of the third fixing frame 46. By rotating the third positioning bolt 461, the third fixing frame 46 is controlled to move upward, so that the upper surface of the third fixing frame 46 contacts the outer wall of the longitudinal FRP reinforcing bar 43, and the other end of the longitudinal FRP reinforcing bar 43 is fixed in the third fixing frame 46.

[0039] Both ends of the fixed seat 41 and the second clamping seat 42 are threaded with second fixing bolts 47, which are fixed in the reinforced concrete bending member 1, thus fixing the fixed seat 41 and the second clamping seat 42 to the reinforced concrete bending member 1.

[0040] Anchoring assembly 5 includes an anchoring base frame 51. The upper surface of the anchoring base frame 51 has a longitudinal groove 501 corresponding to the longitudinal FRP reinforcing bar 43, in which the longitudinal FRP reinforcing bar 43 is movably engaged. The upper surface of the anchoring base frame 51 also has a transverse groove 502 corresponding to the transverse FRP reinforcing bar 2, in which the transverse FRP reinforcing bar 2 is movably engaged. The bottom ends of the anchoring base frame 51 at the intersection of the longitudinal groove 501 and the transverse groove 502 are threaded with inner top bolts 53. Rotating the inner top bolts allows for... The top bolt 53 controls the inner top bolt 53 to move upward, so that the end of the inner top bolt 53 abuts against the longitudinal FRP reinforcing bar 43, so that the longitudinal FRP reinforcing bar 43 and the transverse FRP reinforcing bar 2 are in close contact, and the positions of the longitudinal FRP reinforcing bar 43 and the transverse FRP reinforcing bar 2 are fixed, so that multiple longitudinal FRP reinforcing bars 43 provide stable support for multiple transverse FRP reinforcing bars 2. The bottom end of the anchoring frame 51 is fixedly equipped with two injection pipes 54, and the top of the injection pipes 54 are connected to the longitudinal groove 501.

[0041] The anchoring base frame 51 is provided with rivets 52 at each of its four corners. The rivets 52 are fixed in the reinforced concrete bending member 1, thereby fixing the anchoring base frame 51 to the reinforced concrete bending member 1.

[0042] The reinforcing component also includes an injection assembly 6, which includes a tee pipe 61. L-shaped bends 62 are fixedly installed at both ends of the tee pipe 61. Each end of the L-shaped bend 62 has an integrally formed connecting protrusion 621. A mounting screw 63 is movably sleeved on the outer side of the connecting protrusion 621. A sealing gasket 622 is provided at the top of the connecting protrusion 621. A guide hose 64 is fixedly installed at the bottom end of the tee pipe 61. The injection assembly 6 is threaded onto the bottom of the injection pipe 54 in the corresponding anchoring component 5 via two mounting screws 63. The injection assembly 6 contacts the bottom end of the injection pipe 54 in the corresponding anchoring component 5 through the upper surface of the sealing gasket 622, thus connecting the L-shaped bend 62 with the corresponding anchor. The sealing installation between the injection pipes 54 in the solidification component 5 connects the end of the guide hose 64 to the output pump on the reinforcing slurry storage system. After the anchoring bottom frame 51 fixes the position of the longitudinal FRP reinforcing steel bar 43 and the transverse FRP reinforcing steel bar 2, the output pump on the reinforcing slurry storage system is turned on. The reinforcing slurry is introduced into the longitudinal groove 501 and the transverse groove 502 through the guide hose 64, the tee pipe 61, the L-shaped bends on both sides 62 and the corresponding injection pipes 54, and gradually enters the embedded shallow groove 101 to reinforce the longitudinal FRP reinforcing steel bar 43 and the transverse FRP reinforcing steel bar 2 with slurry, further improving the reinforcement effect on the reinforced concrete bending member 1.

[0043] A method for strengthening composite anchored FRP reinforced concrete flexural members includes the following steps: Step 1: Open a shallow groove 101 in the lower surface of the reinforced concrete bending member 1 in the transverse direction, and fix the two fastening components 3 to the two ends of the reinforced concrete bending member 1 respectively using the first fixing bolt 36. Subsequently, the ends of multiple transverse FRP reinforcing bars 2 are respectively fixed in the first sleeve 32 of the corresponding fastening assembly 3. Then, the first fastening nut 332 is manually rotated with a tool to gradually tighten the multiple transverse FRP reinforcing bars 2, and the transverse FRP reinforcing bars 2 are half-embedded in the embedded shallow groove 101 to reinforce the reinforced concrete bending member 1. Step 2: Install multiple auxiliary support components 4 at equal intervals below the reinforced concrete bending member 1, and fix the fixed seat 41 and the second clamping seat 42 to both ends of the reinforced concrete bending member 1 respectively using the second fixing bolt 47. Subsequently, one end of multiple longitudinal FRP reinforcing bars 43 is fixed in the second sleeve 411, and the other end of multiple longitudinal FRP reinforcing bars 43 is fixed in the third sleeve 45. Then, the second fastening nut 442 is manually rotated using a tool to gradually tighten the multiple longitudinal FRP reinforcing bars 43. At this time, the longitudinal FRP reinforcing bars 43 are located below the transverse FRP reinforcing bars 2, and the longitudinal FRP reinforcing bars 43 provide auxiliary support for the multiple transverse FRP reinforcing bars 2. Step 3: Fix the anchoring base frame 51 to the reinforced concrete bending member 1 using rivets 52, and make the longitudinal FRP reinforcing steel bar 43 movably locked in the corresponding longitudinal groove 501, and the transverse FRP reinforcing steel bar 2 movably locked in the corresponding transverse groove 502. Subsequently, rotating the inner top bolt 53 controls the inner top bolt 53 to move upward, so that the end of the inner top bolt 53 abuts against the longitudinal FRP reinforcing bar 43, so that the longitudinal FRP reinforcing bar 43 and the transverse FRP reinforcing bar 2 are in close contact, and the positions of the longitudinal FRP reinforcing bar 43 and the transverse FRP reinforcing bar 2 are fixed, thereby enabling multiple longitudinal FRP reinforcing bars 43 to provide stable support for multiple transverse FRP reinforcing bars 2; Step 4: After the anchoring bottom frame 51 fixes the position of the longitudinal FRP reinforcing steel bar 43 and the transverse FRP reinforcing steel bar 2, the injection component 6 is threaded onto the bottom of the injection pipe 54 in the corresponding anchoring component 5 through two mounting screws 63, so that the upper surface of the sealing gasket 622 contacts the bottom end of the injection pipe 54 in the corresponding anchoring component 5. Subsequently, the end of the guide hose 64 is connected to the output pump on the reinforcing slurry storage system, and the output pump on the reinforcing slurry storage system is turned on. The reinforcing slurry is introduced into the longitudinal groove 501 and the transverse groove 502 through the guide hose 64, the tee pipe 61, the L-shaped bends on both sides 62 and the corresponding injection pipe 54, and gradually enters the embedded shallow groove 101 to reinforce the longitudinal FRP reinforcing steel bar 43 and the transverse FRP reinforcing steel bar 2 with slurry.

[0044] 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 composite anchored FRP reinforced concrete flexural strengthening member, comprising a reinforced concrete flexural member (1), characterized in that: The lower surface of the reinforced concrete bending member (1) is provided with an embedded shallow groove (101) in the transverse direction. A transverse FRP reinforcing bar (2) is partially embedded in the embedded shallow groove (101). Both ends of the transverse FRP reinforcing bar (2) are provided with fastening components (3). The fastening components (3) are fixed to the lower surface of the reinforced concrete bending member (1). A supporting component (4) is provided vertically below the transverse FRP reinforcing bar (2). Both ends of the supporting component (4) are fixed to the lower surface of the reinforced concrete bending member (1). An anchoring component (5) is provided at the intersection of the transverse FRP reinforcing bar (2) and the supporting component (4). The anchoring component (5) is fixed to the lower surface of the reinforced concrete bending member (1).

2. The composite anchored FRP reinforced concrete flexural strengthening member according to claim 1, characterized in that: The fastening assembly (3) includes a first retainer (31) and a first sleeve (32). Multiple first sleeves (32) are provided. One end of the transverse FRP reinforcing bar (2) is movably engaged in the first sleeve (32). A first fastening rod (33) is provided at the bottom end of the first sleeve (32). A first protrusion (331) is integrally formed on the top of the first fastening rod (33). The first fastening rod (33) and the first protrusion (331) are vertically engaged on the first retainer (31). One end of the first fastening rod (33) away from the first sleeve (32) passes through the first retainer (31) and is threaded with a first fastening nut (332). One end of the first fastening rod (33) away from the first fastening nut (332) is integrally formed with a first mounting rod. (333) The bottom of the first sleeve (32) is provided with a plurality of first screw cylinders (321), and the plurality of first screw cylinders (321) penetrate the first mounting rod (333) vertically. The top and bottom of the first screw cylinder (321) are threaded with first nuts (35). The first mounting rod (333) is located between two first nuts (35). The bottom of the inner side of the first sleeve (32) is provided with a first fixed frame (34). The upper surface of the first fixed frame (34) contacts the outer wall of the transverse FRP reinforcing steel bar (2). The first screw cylinder (321) is threaded with a first positioning bolt (341). The end of the first positioning bolt (341) extends into the first sleeve (32) and is movably engaged with the bottom of the first fixed frame (34).

3. The composite anchored FRP reinforced concrete flexural strengthening member according to claim 2, characterized in that: Both ends of the first card holder (31) are threaded with a first fixing bolt (36), which is fixed in the reinforced concrete bending member (1).

4. The composite anchored FRP reinforced concrete flexural strengthening member according to claim 3, characterized in that: The auxiliary support assembly (4) includes a fixed seat (41) and a second clamping seat (42). A longitudinal FRP reinforcing bar (43) is provided between the fixed seat (41) and the second clamping seat (42). The longitudinal FRP reinforcing bar (43) and the transverse FRP reinforcing bar (2) are arranged vertically. The longitudinal FRP reinforcing bar (43) is located below the transverse FRP reinforcing bar (2). A second sleeve (411) is vertically provided on the outer side of the fixed seat (41). One end of the longitudinal FRP reinforcing bar (43) is movably clamped in the second sleeve (411). A second fixed frame (413) is provided on the bottom inner side of the second sleeve (411). The upper surface of the second fixed frame (413) is in contact with the outer wall of the longitudinal FRP reinforcing bar (43). A second positioning bolt (412) is vertically installed at the bottom of the second sleeve (411). The end of the second positioning bolt (412) extends into the second sleeve (411) and is movably clamped at the bottom of the second fixed frame (413).

5. A composite anchored FRP reinforced concrete flexural strengthening member according to claim 4, characterized in that: The second clamping seat (42) is vertically provided with a plurality of second fastening rods (44). The top of the second fastening rod (44) is integrally formed with a second protrusion (441). The second fastening rod (44) and the second protrusion (441) are vertically clamped onto the second clamping seat (42). The end of the second fastening rod (44) away from the longitudinal FRP reinforcing bar (43) is threaded with a second fastening nut (442). The end of the second fastening rod (44) near the longitudinal FRP reinforcing bar (43) is integrally formed with a second mounting rod (443). The top of the second mounting rod (443) is provided with a third sleeve (45). (45) has a plurality of third screw cylinders (451) vertically arranged at the bottom. The plurality of third screw cylinders (451) vertically penetrate the second mounting rod (443). The bottom of the third screw cylinder (451) is threaded with a third nut (452). The bottom of the inner side of the third sleeve (45) is provided with a third fixed frame (46). The upper surface of the third fixed frame (46) is in contact with the outer wall of the longitudinal FRP reinforcing steel bar (43). The third screw cylinder (451) is threaded with a third positioning bolt (461). The end of the third positioning bolt (461) extends into the third sleeve (45) and is movably engaged with the bottom of the third fixed frame (46).

6. A composite anchored FRP reinforced concrete flexural strengthening member according to claim 5, characterized in that: Both ends of the fixed seat (41) and the second card seat (42) are threaded with a second fixing bolt (47), which is fixed in the reinforced concrete bending member (1).

7. A composite anchored FRP reinforced concrete flexural strengthening member according to claim 6, characterized in that: The anchoring assembly (5) includes an anchoring base frame (51). The upper surface of the anchoring base frame (51) is provided with a longitudinal groove (501) corresponding to the longitudinal FRP reinforcing bar (43). The longitudinal FRP reinforcing bar (43) is movably locked in the corresponding longitudinal groove (501). The upper surface of the anchoring base frame (51) is provided with a transverse groove (502) corresponding to the transverse FRP reinforcing bar (2). The transverse FRP reinforcing bar (2) is movably locked in the corresponding transverse groove (502). The bottom ends of the anchoring base frame (51) at the intersection of the longitudinal groove (501) and the transverse groove (502) are threaded with inner top bolts (53). The bottom end of the anchoring base frame (51) is fixedly provided with two injection pipes (54). The top of the injection pipes (54) is connected to the longitudinal groove (501).

8. A composite anchored FRP reinforced concrete flexural strengthening member according to claim 7, characterized in that: The anchoring base frame (51) is provided with rivets (52) at all four corners, and the rivets (52) are fixed in the reinforced concrete bending member (1).

9. A composite anchored FRP reinforced concrete flexural strengthening member according to claim 8, characterized in that: The reinforcing component also includes an injection assembly (6), which includes a three-way pipe (61). Both ends of the three-way pipe (61) are fixedly installed with L-shaped bends (62). The ends of the L-shaped bends (62) are integrally formed with connecting buckles (621). The outer side of the connecting buckles (621) is movably fitted with mounting screws (63). The top of the connecting buckles (621) is provided with a sealing gasket (622). The bottom end of the three-way pipe (61) is fixedly installed with a guide hose (64). The injection assembly (6) is threaded onto the bottom of the injection pipe (54) in the corresponding anchoring component (5) through two mounting screws (63). The injection assembly (6) contacts the bottom end of the injection pipe (54) in the corresponding anchoring component (5) through the upper surface of the sealing gasket (622).

10. A method for strengthening a composite anchored FRP reinforced concrete flexural member according to claim 9, characterized in that, Includes the following steps: Step 1: Open a shallow groove (101) in the lower surface of the reinforced concrete bending member (1) and fix the two fastening components (3) to the two ends of the reinforced concrete bending member (1) respectively using the first fixing bolt (36). Subsequently, the ends of multiple transverse FRP reinforcing bars (2) are respectively fixed in the first sleeve (32) of the corresponding fastening assembly (3). Then, the first fastening nut (332) is manually rotated using a tool to gradually tighten the multiple transverse FRP reinforcing bars (2) and make the transverse FRP reinforcing bars (2) half-embedded in the embedded shallow groove (101) to reinforce the reinforced concrete bending member (1). Step 2: Install multiple auxiliary support components (4) at equal intervals below the reinforced concrete bending member (1), and fix the fixed seat (41) and the second card seat (42) to both ends of the reinforced concrete bending member (1) respectively using the second fixing bolt (47); Subsequently, one end of multiple longitudinal FRP reinforcing bars (43) is fixed in the second sleeve (411), and the other end of multiple longitudinal FRP reinforcing bars (43) is fixed in the third sleeve (45). Then, the second fastening nut (442) is manually rotated using a tool to gradually tighten multiple longitudinal FRP reinforcing bars (43). At this time, the longitudinal FRP reinforcing bars (43) are located below the transverse FRP reinforcing bars (2), and the longitudinal FRP reinforcing bars (43) provide auxiliary support for multiple transverse FRP reinforcing bars (2). Step 3: Fix the anchoring bottom frame (51) to the reinforced concrete bending member (1) using rivets (52), and make the longitudinal FRP reinforcing bars (43) movable in the corresponding longitudinal groove (501), and the transverse FRP reinforcing bars (2) movable in the corresponding transverse groove (502); Subsequently, the inner top bolt (53) is rotated to control the inner top bolt (53) to move upward, so that the end of the inner top bolt (53) abuts against the longitudinal FRP reinforcing bar (43), so that the longitudinal FRP reinforcing bar (43) and the transverse FRP reinforcing bar (2) are in close contact, and the positions of the longitudinal FRP reinforcing bar (43) and the transverse FRP reinforcing bar (2) are fixed, so that multiple longitudinal FRP reinforcing bars (43) provide stable support for multiple transverse FRP reinforcing bars (2); Step 4: After the anchoring bottom frame (51) fixes the longitudinal FRP reinforcing bars (43) and the transverse FRP reinforcing bars (2) in position, the injection assembly (6) is installed at the bottom of the injection pipe (54) in the corresponding anchoring assembly (5) through the threads of the two mounting screws (63), so that the upper surface of the sealing gasket (622) and the bottom end of the injection pipe (54) in the corresponding anchoring assembly (5) come into contact. Subsequently, the end of the guide hose (64) is connected to the output pump on the reinforcement slurry storage system, and the output pump on the reinforcement slurry storage system is turned on. The reinforcement slurry is introduced into the longitudinal groove (501) and the transverse groove (502) through the guide hose (64), the three-way pipe (61), the L-shaped bends on both sides (62) and the corresponding injection pipe (54), and gradually enters the embedded shallow groove (101) to reinforce the longitudinal FRP reinforcement steel (43) and the transverse FRP reinforcement steel (2) with slurry.

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