Glass fiber sleeve reinforcement structure suitable for existing bridges

Abstract

The invention discloses a glass fiber sleeve reinforcement structure suitable for an existing bridge, which belongs to the technical field of bridge reinforcement, and comprises two glass fiber cylinders and two connecting plates symmetrically arranged about an existing bridge pier, wherein the cylinders and the connecting plates are both U-shaped, and the cylinders and the connecting plates are detachably connected; a plurality of groups of support rods facing the center are distributed in a circular array on the inner wall of the cylinder, a plurality of slide grooves are provided on the peripheral side of the connecting plate, the ends of the support rods are slidably connected with the corresponding slide grooves, and a pushing device for pushing the cylinder to move downward is detachably connected to the top of the connecting plate; a plurality of telescopic structures facing the bridge piers are provided on the connecting plate and the inner wall of the cylinder; an annular support frame is detachably connected to the peripheral side of the bottom of the cylinder, a plurality of high-pressure nozzles facing the bridge piers are provided on the support frame, and an air bag for sealing is provided on the inner wall of the bottom of the cylinder; the invention aims to solve the problem that construction personnel need to stay in water for a long time during the implementation of an underwater glass fiber sleeve reinforcement system.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge reinforcement, and in particular relates to a glass fiber sleeve reinforcement structure suitable for existing bridges. Background Art

[0002] The underwater fiberglass sleeve reinforcement system, also known as the jacket method, is a reinforcement technology used for underwater pier reinforcement, repair and protection. It is mainly composed of underwater epoxy grouting materials and customized fiberglass sleeves. It can complete the repair and reinforcement of bridge piles made of various materials such as concrete piles, steel piles, and wooden piles during underwater operations. The epoxy grouting material penetrates into the cracks of the pier to form a rivet structure, which can better repair and reinforce the original structure.

[0003] However, during the implementation of the underwater fiberglass sleeve reinforcement system, it is necessary to use a high-pressure water gun to flush the bridge piers to remove stains and loose tissue on the surface of the piers, so as to prevent stains and loose tissue from affecting the penetration of epoxy grouting into the cracks of the pier columns, causing the formed rivet structure to become loose, affecting the connection stability between the reinforcement structure and the piers; at the same time, it is also necessary to install and fix the fiberglass sleeve in water, requiring construction workers to work underwater for a long time, which not only affects work efficiency, but also poses a great threat to the health of construction workers. Summary of the invention

[0004] In view of this, the present invention discloses a glass fiber sleeve reinforcement structure suitable for existing bridges, which aims to solve the problem that construction workers need to stay in the water for a long time during the implementation of the underwater glass fiber sleeve reinforcement system.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A fiberglass sleeve reinforcement structure suitable for existing bridges, comprising two fiberglass cylinders symmetrically arranged about existing piers and two connecting plates, the cylinders and connecting plates are both U-shaped, and the cylinders and connecting plates are detachably connected; a plurality of groups of support rods facing the center are distributed in a circular array on the inner wall of the cylinder, a plurality of vertically arranged slide grooves are provided on the peripheral side of the connecting plate, the ends of the support rods are slidably connected to the corresponding slide grooves, and a pushing device for pushing the cylinder to move downward is detachably connected to the top of the connecting plate; a plurality of telescopic structures facing the piers are provided on the connecting plate and the inner wall of the cylinder, a plurality of vertically arranged connecting grooves are provided on the side wall of the connecting plate, and the telescopic structures on the cylinder pass through the corresponding connecting grooves; an annular support frame is detachably connected to the peripheral side of the bottom of the cylinder, a plurality of high-pressure nozzles facing the piers are provided on the support frame, and an air bag for sealing is provided on the inner wall of the bottom of the cylinder.

[0007] In this scheme, the connecting plate is clamped on the part of the pier exposed to the water surface by using a telescopic structure, and the cylinder and the support frame are pushed downward by using a pushing device. The support frame moves downward while driving the high-pressure nozzle to move synchronously, and the high-pressure nozzle is used to clean the surrounding side of the pier. While the cylinder moves downward, the cleaned part of the pier is isolated and covered by an air bag, which can effectively prevent the stains from adhering to the pier again, and prevent the stains from affecting the penetration of epoxy grouting material into the cracks of the pier column, causing the formed rivet structure to become loose, and affecting the connection stability between the reinforcement structure and the pier; when the cylinder moves downward to a certain distance, the cylinder is clamped on the pier by the telescopic structure on the cylinder, the telescopic structure on the connecting plate is loosened, and the connecting plate is driven downward by using a pushing device; by alternately moving the connecting plate and the cylinder downward until both the connecting plate and the cylinder are moved to the construction position, the construction workers do not need to stay in the water for a long time during the entire construction process, which effectively speeds up the construction efficiency.

[0008] Furthermore, the telescopic structure includes a hollow fixed rod, which is fixed on the corresponding connecting plate and the cylinder, and a coaxial moving rod is slidably connected to the fixed rod, and an elastic reset member is arranged between the moving rod and the fixed rod; adjacent fixed rods are connected by branch pipes, and gas and slurry are injected through one of the branch pipes.

[0009] By injecting gas, the moving rod is pushed toward the bridge pier, and a clamping fixation is formed by multiple moving rods. The cylinder and the connecting plate are fixed to the pier without damaging the pier, thereby enhancing the connection stability between the repair and reinforcement structure and the pier.

[0010] Furthermore, the support rod includes an adjusting rod fixed on the cylinder body, a coaxial mounting cylinder is slidably sleeved on the adjusting rod, one end of the adjusting rod is slidably connected to the slide groove, a rack is fixed to the other end of the adjusting rod, a rotating shaft is horizontally fixed to the side wall of the mounting cylinder, and the ends of the rotating shaft are rotatably connected to an adjusting gear meshing with the rack, a positioning shaft is coaxially slidably connected inside the rotating shaft, and a supporting spring is arranged between the positioning shaft and the rotating shaft, a plurality of limiting grooves are opened on the peripheral side of the end surface of the movable end of the positioning shaft along its axial direction, and the adjusting gear A plurality of limit blocks cooperating with the limit grooves are connected to the side wall along its radial sliding direction, the end faces of the limit blocks are arc-shaped, and a return spring is arranged between the limit blocks and the limit grooves; a vertical tube is arranged next to the slide groove, and the vertical tube simultaneously penetrates and connects all the installation tubes in the same slide groove, a control rod is placed in the vertical tube, a telescopic rod is horizontally arranged at the end of the control rod, a driving motor is arranged at the end of the telescopic rod, a driving gear is fixed on the output end of the driving motor, and a tooth shape for meshing the driving gear is arranged on the inner wall of the adjusting gear shaft hole.

[0011] In this scheme, during the slurry pouring and solidification process, due to the properties of the slurry, hollowing is likely to occur between the cylinder and the slurry, affecting the overall mechanical properties of the reinforced structure; at this time, the control rod is extended into the vertical tube opposite the hollow area, and the height of the control rod is adjusted to ensure that the drive motor at the bottom of the control rod is at the same height as the sleeve near the hollow area, and the telescopic rod is extended to push the drive gear on the drive motor to insert into the opposite adjustment gear shaft hole, and the driving gear is used to push the positioning shaft toward the rotation axis and squeeze the limit block into the limit groove, so that the adjustment gear is engaged with the drive gear and can rotate with it, and the adjustment gear is driven to rotate by the drive motor and the drive gear, and the adjustment rod is driven to move axially by the adjustment gear and the rack to pull or push the side wall of the cylinder of the device, so that the side wall of the cylinder fits tightly with the slurry, eliminating the hollowing phenomenon and ensuring the overall mechanical properties of the reinforced structure.

[0012] Furthermore, the support frame includes a plurality of support plates spliced ​​together, the inner walls of the support plates are detachably connected to guide rails, a plurality of slides are slidably connected to the guide rails, connecting rods are fixed between adjacent slides on the same guide rail, the high-pressure nozzles are connected to corresponding slides, and one of the slides on the same guide rail is provided with a servo for driving the corresponding high-pressure nozzle to deflect.

[0013] The servo is used to deflect one of the high-pressure nozzles, and the reaction force of the high-pressure nozzle when spraying water is used to drive the slide to move horizontally, thereby driving all the high-pressure nozzles on the same guide rail to move horizontally, thereby increasing the cleaning range of the high-pressure nozzle and ensuring the cleanliness of the bridge pier.

[0014] Furthermore, recesses are arranged on the circumference of the movable rod and the fixed rod.

[0015] Furthermore, a clamping plate is fixed to the end of the moving rod, and a friction protrusion is arranged on the clamping plate.

[0016] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the connecting plate and the cylinder in an embodiment of the present invention;

[0020] Figure 3 A longitudinal cross-sectional view of the telescopic structure in an embodiment of the present invention;

[0021] Figure 4 A longitudinal cross-sectional view of a support rod in an embodiment of the present invention

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of a driving gear in an embodiment of the present invention;

[0024] Figure 7 4 is a longitudinal cross-sectional view of a control rod in an embodiment of the present invention.

[0025] The markings in the accompanying drawings are as follows: pier 1, cylinder 2, connecting plate 3, slide 4, high-pressure nozzle 5, fixed rod 6, movable rod 7, elastic reset part 8, branch pipe 9, adjusting rod 10, mounting cylinder 11, rack 12, rotating shaft 13, positioning shaft 14, supporting spring 15, limit block 16, reset spring 17, vertical tube 18, control rod 19, telescopic rod 20, driving motor 21, driving gear 22, supporting plate 23, guide rail 24, connecting rod 25, adjusting gear 26. DETAILED DESCRIPTION

[0026] like Figures 1 to 7 As shown:

[0027] The fiberglass sleeve reinforcement structure applicable to the existing bridge comprises two fiberglass cylinders 2 and two connecting plates 3 symmetrically arranged about the existing bridge pier 1, wherein the cylinders 2 and the connecting plates 3 are both U-shaped, and the cylinders 2 and the connecting plates 3 are detachably connected; a plurality of groups of support rods facing the center are distributed in a circular array on the inner wall of the cylinder 2, a plurality of vertically arranged slide grooves 4 are opened on the peripheral side of the connecting plate 3, the ends of the support rods are slidably connected to the corresponding slide grooves 4, and a detachable connection is provided on the top of the connecting plate 3 for pushing the cylinder 2 to move downward A movable pushing device is used, and the pushing device in this embodiment adopts a cylinder; a plurality of telescopic structures facing the pier 1 are arranged on the connecting plate 3 and the inner wall of the cylinder 2, and a plurality of vertically arranged connecting grooves are opened on the upper side wall of the connecting plate 3, and the telescopic structures on the cylinder 2 pass through the corresponding connecting grooves; an annular support frame is detachably connected to the peripheral side of the bottom of the cylinder 2, and a plurality of high-pressure nozzles 5 facing the pier 1 are arranged on the support frame, and an air bag for sealing is arranged on the inner wall of the bottom of the cylinder 2 (it is a conventional technical means of those skilled in the art, so it is not drawn in the figure).

[0028] In this solution, the connecting plate 3 is clamped on the part of the pier 1 exposed to the water surface by using a telescopic structure, and the cylinder 2 and the support frame are pushed downward by a pushing device. When the support frame moves downward, the high-pressure nozzle 5 is driven to move synchronously, and the high-pressure nozzle 5 is used to clean the side of the pier 1. When the cylinder 2 moves downward, the cleaned part of the pier 1 is isolated and covered by an air bag, which can effectively prevent stains from re-adhering to the pier 1, and prevent stains from affecting the penetration of epoxy grouting material into the cracks of the pier column, causing the formed rivet structure to be loose, affecting the reinforcement The connection stability between the solid structure and the pier 1; when the cylinder 2 moves downward to a certain distance, the cylinder 2 is clamped on the pier 1 by the telescopic structure on the cylinder 2, the telescopic structure on the connecting plate 3 is loosened, and the connecting plate 3 is driven downward by the pushing device; the connecting plate 3 and the cylinder 2 are alternately moved downward until the connecting plate 3 and the cylinder 2 are moved to the construction position. During the entire construction process, there is no need for construction workers to stay in the water for a long time, which effectively speeds up the construction efficiency. In addition, the telescopic structure and the support rod form a truss, which can effectively enhance the strength of the reinforced structure.

[0029] In this embodiment, the telescopic structure includes a hollow fixed rod 6, which is fixed on the corresponding connecting plate 3 and the cylinder 2. A coaxial moving rod 7 is slidably connected to the fixed rod 6, and an elastic reset member 8 is arranged between the moving rod 7 and the fixed rod 6; adjacent fixed rods 6 are connected by branch pipes 9, and gas and slurry are injected through one of the branch pipes 9.

[0030] By injecting gas, the movable rod 7 is pushed to move toward the pier 1, and a clamping fixation is formed by multiple movable rods 7. The cylinder 2 and the connecting plate 3 are fixed to the pier 1 without damaging the pier 1, thereby enhancing the connection stability between the repair and reinforcement structure and the pier 1; after the cylinder 2 and the connecting plate 3 are fixed, the slurry can be poured, and after the slurry solidifies, the gas in the branch pipe 9 and the fixing rod 6 is discharged and the slurry is poured in, so as to ensure the clamping and fixing strength of the connecting rod and the fixing rod 6 to the connecting plate 3 and the cylinder 2.

[0031] In this embodiment, the support rod includes an adjusting rod 10 fixed on the cylinder body 2, a coaxial mounting tube 11 is slidably sleeved on the adjusting rod 10, one end of the adjusting rod 10 is slidably connected to the slide groove 4, and a rack 12 is fixed to the other end of the adjusting rod 10, a rotating shaft 13 is horizontally fixed on the side wall of the mounting tube 11, and the ends of the rotating shaft 13 are rotatably connected to an adjusting gear 26 meshing with the rack 12, a positioning shaft 14 is coaxially slidably connected inside the rotating shaft 13, and a supporting spring 15 is arranged between the positioning shaft 14 and the rotating shaft 13, a plurality of limiting grooves are opened along the axial direction of the movable end surface of the positioning shaft 14, and a plurality of limiting grooves are opened along the radial ... The movable connection is provided with a plurality of limit blocks 16 cooperating with the limit grooves, the end faces of the limit blocks 16 are arc-shaped, and a return spring 17 is provided between the limit blocks 16 and the limit grooves; a vertical tube 18 is provided beside the slide groove 4, and the vertical tube 18 simultaneously penetrates and connects all the mounting tubes 11 in the same slide groove 4, a control rod 19 is placed in the vertical tube 18, and a telescopic rod 20 is horizontally provided at the end of the control rod 19. The telescopic rod 20 in this embodiment is an electric telescopic rod 20, and a driving motor 21 is provided at the end of the telescopic rod 20, and a driving gear 22 is fixed on the output end of the driving motor 21, and a tooth shape meshing with the driving gear 22 is provided on the inner wall of the shaft hole of the adjusting gear 26.

[0032] In this solution, during the slurry pouring and solidification process, due to the properties of the slurry, hollowing is likely to occur between the cylinder 2 and the slurry, affecting the overall mechanical properties of the reinforced structure; at this time, the control rod 19 is extended into the vertical tube 18 opposite the hollow area, and the height of the control rod 19 is adjusted to ensure that the drive motor 21 at the bottom of the control rod 19 is at the same height as the sleeve near the hollow area, and the telescopic rod 20 is extended to push the drive gear 22 on the drive motor 21 into the opposite shaft hole of the adjusting gear 26, and the driving gear 22 is used to push the positioning shaft 14 toward the direction of the rotating shaft 13 and squeeze the limit block 16 into the limit groove, so that the adjusting gear 26 and the drive gear 22 is meshed and can rotate with it, and the adjusting gear 26 is driven to rotate by the driving motor 21 and the driving gear 22, and the adjusting rod 10 is driven to move axially by the adjusting gear 26 and the rack 12 to pull or push the side wall of the cylinder 2 of the device, so that the side wall of the cylinder 2 and the slurry are closely fitted, the hollowing phenomenon is eliminated, and the overall mechanical properties of the reinforced structure are ensured; after the adjustment is completed, the telescopic rod 20 drives the driving motor 21 to reset, the driving gear 22 is disengaged from the axial hole of the adjusting gear 26, the positioning shaft 14 is reset under the action of the supporting spring 15, and the limit block 16 is inserted into the limit groove under the action of the reset spring 17 to complete the fixation of the adjusting rod 10.

[0033] In this embodiment, the support frame includes a support plate 23 spliced ​​together with several sections, and the inner walls of the support plates 23 are detachably connected to guide rails 24. Several slides (not shown in the figure) are slidably connected to the guide rails 24, and connecting rods 25 are fixed between adjacent slides on the same guide rail 24. The high-pressure nozzle 5 is connected to the corresponding slides, and one of the slides on the same guide rail 24 is provided with a servo for driving the corresponding high-pressure nozzle 5 to deflect.

[0034] The steering gear is used to drive one of the high-pressure nozzles 5 to deflect, and the reaction force of the high-pressure nozzle 5 when spraying water is used to drive the slide to move horizontally, thereby driving all the high-pressure nozzles 5 on the same guide rail 24 to move horizontally, thereby increasing the cleaning range of the high-pressure nozzle 5 and ensuring the cleanliness of the bridge pier 1.

[0035] In this embodiment, recesses are provided on the circumference of the movable rod 7 and the fixed rod 6 (this is a conventional technical means used by those skilled in the art, so it is not drawn in the figure); by providing the recesses, a rivet structure is formed between the movable rod 7 and the fixed rod 6 after the slurry solidifies, thereby enhancing the connection strength between the three.

[0036] In this embodiment, a clamping plate is fixed at the end of the movable rod 7 (it is a conventional technical means for those skilled in the art and therefore not shown in the figure), and a friction protrusion is provided on the clamping plate; the friction force between the movable rod 7 and the pier 1 is strengthened by the clamping plate and the friction protrusion, thereby improving the connection stability between the cylinder 2, the connecting plate 3 and the pier 1.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A glass fiber sleeve reinforcement structure suitable for existing bridges, comprising two glass fiber cylinders and two connecting plates symmetrically arranged about the existing bridge piers, characterized in that: The cylinder and the connecting plate are both U-shaped, and the cylinders and the connecting plates are detachably connected; a plurality of groups of support rods facing the center are distributed in a circumferential array on the inner wall of the cylinder, a plurality of vertically arranged slide grooves are opened on the peripheral side of the connecting plate, the ends of the support rods are slidably connected with the corresponding slide grooves, and a pushing device for pushing the cylinder to move downward is detachably connected to the top of the connecting plate; a plurality of telescopic structures facing the piers are arranged on the connecting plate and the inner wall of the cylinder, a plurality of vertically arranged connecting grooves are opened on the side wall of the connecting plate, and the telescopic structure on the cylinder passes through the corresponding connecting grooves; an annular support frame is detachably connected to the peripheral side of the bottom of the cylinder, a plurality of high-pressure nozzles facing the piers are arranged on the support frame, and an air bag for sealing is arranged on the inner wall of the bottom of the cylinder; the telescopic structures all include hollow fixed rods, which are fixed to the corresponding connecting plates and the cylinder, and a coaxial moving rod is slidably connected to the fixed rod, and an elastic reset member is arranged between the moving rod and the fixed rod; a branch pipe is connected between adjacent fixed rods, and a branch pipe is connected through one of the support rods The pipe is used to inject gas and slurry; the support rod includes an adjusting rod fixed on the cylinder body, a coaxial mounting cylinder is slidably sleeved on the adjusting rod, one end of the adjusting rod is slidably connected with the slide groove, and the other end of the adjusting rod is fixed with a rack, a rotating shaft is horizontally fixed on the side wall of the mounting cylinder, and the ends of the rotating shaft are rotatably connected with an adjusting gear meshing with the rack, a positioning shaft is coaxially slidably connected inside the rotating shaft, and a supporting spring is arranged between the positioning shaft and the rotating shaft, and a plurality of limit grooves are opened on the peripheral side of the end surface of the movable end of the positioning shaft along its axial direction, and the adjusting A plurality of limit blocks cooperating with the limit grooves are connected to the side walls of the segment gears along their radial sliding direction, the end faces of the limit blocks are arc-shaped, and a return spring is arranged between the limit blocks and the limit grooves; a vertical tube is arranged next to the slide groove, and the vertical tube simultaneously penetrates and connects all the mounting tubes in the same slide groove, a control rod is placed in the vertical tube, a telescopic rod is horizontally arranged at the end of the control rod, a driving motor is arranged at the end of the telescopic rod, a driving gear is fixed to the output end of the driving motor, and a tooth shape for meshing the driving gear is arranged on the inner wall of the adjusting gear shaft hole.

2. The glass fiber sleeve reinforcement structure applicable to existing bridges according to claim 1 is characterized in that: The support frame includes a plurality of support plates spliced ​​together, the inner walls of the support plates are detachably connected to guide rails, a plurality of slide seats are slidably connected to the guide rails, connecting rods are fixed between adjacent slide seats on the same guide rail, the high-pressure nozzles are connected to corresponding slide seats, and a servo for driving the corresponding high-pressure nozzle to deflect is provided on one of the slide seats on the same guide rail.

3. The glass fiber sleeve reinforcement structure applicable to existing bridges according to claim 2 is characterized in that: The movable rod and the fixed rod are both provided with depressions on their circumferential sides.

4. The glass fiber sleeve reinforcement structure applicable to existing bridges according to claim 3 is characterized in that: A clamping plate is fixed to the end of the moving rod, and a friction protrusion is arranged on the clamping plate.

Images