Bridge reinforcing device and method without interrupting traffic
Through the bridge reinforcement method constructed at the bottom of the beam, the hinge joint glue injection system and anchor reinforcement system are used to solve the traffic congestion and long construction cycle problems caused by traditional bridge reinforcement methods without affecting traffic, and the efficient repair of bridge hinge joint diseases and the stability of bridge structure is achieved.
Patent Information
- Application Number
- CN202510516969.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-05-30
AI Technical Summary
Traditional bridge reinforcement methods require the construction of closed lanes when dealing with hinge joint diseases, resulting in traffic congestion, increasing the cost of maintaining traffic, and long construction period, making it difficult to effectively deal with complex problems such as uneven hinge joint width and lack of grouting conditions in some areas.
Provide a bridge reinforcement device and method that does not interrupt traffic, including a hinge joint glue injection system, an anchor reinforcement system, a temporary support system and a sealing layer. By constructing at the bottom of the beam, epoxy resin structural glue is injected with hose injection and measuring tubes, and reinforced with self-locking anchor rods and steel plates to ensure that the reinforcement process does not affect traffic.
It has achieved efficient and reliable repair of bridge hinge joint diseases without closing the bridge deck traffic, enhanced the integrity and stability of the bridge structure, extended the service life of the bridge, and reduced traffic impact and construction costs.
Smart Images
Figure CN120061255A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of bridge reinforcement, and in particular to a bridge reinforcement device and reinforcement method without interrupting traffic. Background Art
[0002] In the field of bridge construction and maintenance, precast hollow slab bridges are widely used, but the disease of "single slab stress" occurs frequently, seriously threatening the safety of bridges. Traditional reinforcement methods, such as chiseling and reconstructing the bridge deck asphalt pavement and concrete pavement and cooperating with the upper and lower tension bolts at the hinge joint for reinforcement, although having certain effects, have many defects. First, it is necessary to close the lane for construction, which not only causes traffic congestion, increases the cost of traffic maintenance, but also may cause traffic accidents, causing great inconvenience to social economy and public travel; second, the construction period is long, occupying traffic resources for a long time and affecting the traffic fluency of the area; third, for the later stage of hinge joint diseases, it is difficult for traditional methods to effectively deal with complex problems such as uneven hinge joint width and inapplicable grouting conditions in some areas.
[0003] Currently, although there have been some attempts to reinforce bridges without interrupting traffic, such as simple hinge joint grouting technology, it is only applicable to the early or middle stage of diseases. When facing the complex conditions in the later stage of diseases, the reinforcement effect is not good and cannot meet the long-term stability requirements of bridges. Summary of the Invention
[0004] The present invention mainly aims at the above problems existing in the prior art, and provides a bridge reinforcement device and reinforcement method without interrupting traffic, overcoming the defects of traditional reinforcement methods, efficiently and reliably repairing the hinge joint diseases of bridges without affecting the normal traffic on the bridge deck, enhancing the integrity and stability of the bridge structure, extending the service life of the bridge, and reducing traffic impact and construction costs.
[0005] The object of the present invention is mainly achieved through the following solutions: A bridge reinforcement device without interrupting traffic, comprising: A hinge joint grouting system, including a grouting pipe, a measuring pipe, a first grouting layer and a second grouting layer. The grouting pipe and the measuring pipe are evenly provided with multiple groups along the length direction of the hinge joint, and the top end of the grouting pipe is lower than the bottom of the original hinge joint filler, the top end of the measuring pipe is lower than the top end of the grouting pipe, the upper surface of the first grouting layer is flush with the top end of the measuring pipe, and the upper surface of the second grouting layer is flush with the top end of the bridge deck; An anchor rod reinforcement system, including a self-locking anchor rod, a locking nut and a steel plate. The self-locking anchor rods are evenly provided with a plurality along the length direction of the hinge joint, and the anchor heads of the self-locking anchor rods are located in the second grouting layer. The ends of the self-locking anchor rods pass through the bottom of the hinge joint and are threadedly connected with the locking nuts. The steel plates are sleeved on the ends of the self-locking anchor rods, and the steel plates are fixed between the bottom of the hinge joint and the locking nuts by tightening the locking nuts; The temporary support system has two sets and is located at both ends of the hinge joint respectively. It includes wooden strips and a foaming glue layer. The wooden strips are vertically inserted into the hinge joint, and there are at least two wooden strips. A foaming glue layer is filled between adjacent two wooden strips; The bottom of the hinge joint is also filled with a sealing layer.
[0006] Preferably, both the glue injection pipe and the measuring pipe are made of PVC pipeline. The distance between the top end of the glue injection pipe and the bottom of the original hinge joint filler is 0.8 - 1.2 cm, the distance between the top end of the measuring pipe and the bottom of the original hinge joint filler is 3 - 15 cm, and the distance between the glue injection pipe and the measuring pipe in the same group is 4 - 6 cm.
[0007] Preferably, both the first glue injection layer and the second glue injection layer are made of A and B modified epoxy resin structural adhesives.
[0008] Preferably, the foaming glue layer is made of polyurethane foaming glue.
[0009] Preferably, the sealing layer includes mortar and a sealing tape. The mortar is filled at the hinge joint, and the sealing tape is pasted on the surface of the mortar.
[0010] This application also provides a method for strengthening a bridge without interrupting traffic, including the following steps: S1. Install the temporary support system: Install the temporary support system at both ends of the beam bottom hinge joint of the bridge to be strengthened, and limit the vibration amplitude of the beam body through the temporary support system to prevent brittle failure; S2. Clean the damaged hinge joint: Use an electric wire brush and high-pressure water to wash the sundries inside the hinge joint; S3. Implant self-locking anchor bolts: Vertically implant self-locking anchor bolts at the position of the beam bottom hinge joint. A plurality of self-locking anchor bolts are evenly arranged along the length direction of the hinge joint, and the anchor heads of the self-locking anchor bolts are inserted into the original hinge joint filler; S4. Bury the glue injection pipe and the measuring pipe: Vertically insert the glue injection pipe and the measuring pipe at the position of the beam bottom hinge joint. Multiple groups of glue injection pipes and measuring pipes are evenly arranged along the length direction of the hinge joint, and ensure that the top end of the glue injection pipe is lower than the bottom of the original hinge joint filler, and the top end of the measuring pipe is lower than the top end of the glue injection pipe; S5. Seal the bottom of the hinge joint: Use the sealing layer to seal the bottom of the hinge joint, and let it stand for at least 48 hours after the sealing construction is completed; S6. First glue injection: Use a pressure injector to inject glue into the hinge joint through the glue injection pipe, inject glue without pressure until the glue comes out from the measuring pipe of the same group, empty the glue injection pipe and wait for the glue to cure; S7. Second glue injection: Seal the measuring pipe, use a pressure injector to inject glue into the hinge joint through the glue injection pipe, control the pressure at 0.5 MPa, continuously inject glue until the glue oozes out from the bridge deck or leaks from the beam end, or the injection reaches and maintains a pressure of 0.5 MPa for 15 minutes; S8. Install steel plate: After the adhesive cures, anchor the steel plate at the end of the bolt through a lock nut. S9. Demolish the temporary support system: After construction, demolish the temporary support system at least 48 hours later.
[0011] Preferably, in steps S6 and S7, the adhesive is an A, B modified epoxy resin structural adhesive, and the ratio of the A and B components for injecting the adhesive is 2:1. The single - time mixing amount of the adhesive does not exceed 3 kg, and the injection time does not exceed 30 min.
[0012] Preferably, in steps S6 and S7, the injection sequence of the adhesive is from one end of the hinge joint at the bottom of the beam to the other end.
[0013] Preferably, in step S3, the distance between two adjacent self - locking bolts is 40 - 60 cm.
[0014] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) The present invention has little impact on traffic. The construction is carried out from the bottom of the beam throughout the process, and the entire reinforcement process does not require closing the bridge deck traffic, greatly reducing traffic interference, reducing traffic maintenance costs, avoiding economic losses and traffic accident risks caused by traffic congestion, and improving social and economic benefits. (2) The present invention has good reinforcement effect. The hinge joint glue injection system and the bolt reinforcement system work together. It can not only restore the bonding force between the beam slabs by injecting glue, but also provide reliable mechanical anchoring using self - locking bolts, effectively solving the complex problems in the later stage of hinge joint diseases, significantly enhancing the integrity and stability of the bridge structure, improving the bearing capacity of the bridge, and extending the service life of the bridge. (3) The present invention has high construction efficiency. Each process is closely connected, and the construction time is short. Compared with traditional reinforcement methods, the construction period is greatly shortened, improving the construction efficiency. (4) The present invention has strong adaptability. The setting of the temporary support system can adapt to bridges with different disease degrees, effectively restricting the vibration of the beam body. The flexible arrangement of the glue injection pipe, measuring pipe and self - locking bolts can be flexibly adjusted according to the actual situation of the hinge joint, applicable to various hinge joint widths and disease conditions, improving the versatility and adaptability of the reinforcement device and reinforcement method. (5) The materials of the present invention have excellent properties. The A, B modified epoxy resin structural adhesive used has good adhesion, durability and anti - aging properties. The polyurethane foam adhesive as the filling material for the temporary support has excellent filling and buffering properties. The PVC wire pipe is resistant to chemical corrosion, ensuring the long - term reliability and stability of the reinforcement device and reinforcement method. Description of the Drawings
[0015] Figure 1 is a structural schematic diagram of the present invention; Figure 2It is the installation schematic diagram of the self-locking bolt in the present invention; Figure 3 It is the installation schematic diagram of the glue injection pipe and the measuring pipe in the present invention; Figure 4 It is the layout diagram of the glue injection pipe in the present invention; Figure 5 It is Figure 4 the enlarged view of part A in Figure 6 It is the top installation schematic diagram of the glue injection pipe and the measuring pipe in the present invention; Figure 7 It is the structural schematic diagram of the temporary support system of the present invention; Figure 8 It is the structural schematic diagram of the sealing layer in the present invention.
[0016] Reference numerals: 1: Glue injection pipe; 2: Measuring pipe; 3: First glue injection layer; 4: Second glue injection layer; 5: Bottom of the original hinge joint filler; 6: Bridge deck; 7: Self-locking bolt; 8: Locking nut; 9: Steel plate; 10: Wooden strip; 11: Foaming glue layer; 12: Sealing layer. Detailed implementation manners
[0017] Next, through specific embodiments and in combination with the drawings, the technical solutions of the present invention will be further specifically described. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any formal modification and / or change made to the present invention will fall within the protection scope of the present invention.
[0018] As Figure 1-8 shown, the present invention discloses a technical solution, a bridge reinforcement device without interrupting traffic, including: a hinge joint glue injection system, an anchor bolt reinforcement system, a temporary support system, and a sealing layer 12.
[0019] The hinge joint grouting system includes a grouting pipe 1, a measuring pipe 2, a first grouting layer 3 and a second grouting layer 4. Multiple groups of grouting pipes 1 and measuring pipes 2 are evenly arranged along the length direction of the hinge joint to ensure the uniformity of grouting and the effective monitoring of the grouting process. The top end of the grouting pipe 1 is lower than the bottom of the original hinge joint filler 5, generally with a distance of 0.8 - 1.2 cm from the bottom of the original hinge joint filler 5, preferably 1 cm, which is convenient for the glue to be smoothly injected into the key bonding area at the bottom of the hinge joint. The top end of the measuring pipe 2 is lower than the top end of the grouting pipe 1, generally with a distance of 3 - 15 cm from the bottom of the original hinge joint filler 5. The distance between the grouting pipe 1 and the measuring pipe 2 in the same group is 4 - 6 cm, preferably 5 cm. The reasonable spacing design can not only ensure the accurate measurement of the rising of the glue by the measuring pipe, but also not affect the grouting effect. The upper surface of the first grouting layer 3 is flush with the top end of the measuring pipe 2, and the upper surface of the second grouting layer 4 is flush with the top end of the bridge deck 6. The two-layer grouting structure cooperates to gradually fill the hinge joint from bottom to top, enhancing the bonding effect. Both the grouting pipe 1 and the measuring pipe 2 are made of PVC wire pipes, preferably 16 mm PVC wire pipes, which have strong chemical corrosion resistance, can adapt to the glue environment, and ensure the stability and reliability of the grouting and measuring processes.
[0020] The anchor rod reinforcement system includes a self-locking anchor rod 7, a locking nut 8 and a steel plate 9. Multiple self-locking anchor rods 7 are evenly arranged along the length direction of the hinge joint, and the distance between two adjacent self-locking anchor rods 7 is 40 - 60 cm, preferably 50 cm, to ensure stable mechanical anchoring force at different positions of the hinge joint. The anchor head of the self-locking anchor rod 7 is located in the second grouting layer 4, and through the synergistic effect with the glue, the anchoring effect is enhanced. The end passes through the bottom of the hinge joint and is threadedly connected to the locking nut 8. The steel plate 9 is sleeved on the end of the self-locking anchor rod 7, and the locking nut 8 is tightened to fix the steel plate 9 between the bottom of the hinge joint and the locking nut 8, realizing the effective reinforcement of the hinge joint and preventing the dislocation between the beam plates.
[0021] The temporary support system is provided with one group at each end of the hinge joint. Each group includes a wooden strip 10 vertically inserted into the hinge joint and a foaming glue layer 11 filled between adjacent wooden strips 10. The wooden strip 10 provides a certain rigid support, and the foaming glue layer 11 uses polyurethane foaming glue, which has good filling and buffering properties. During the construction process, especially during the grouting and anchoring processes, it can effectively limit the vibration amplitude of the beam body and prevent brittle failure, providing guarantee for the construction safety and quality. Preferably, there are three layers of wooden strips 10 at each end.
[0022] The sealing layer 12: is located at the bottom of the hinge joint and is composed of mortar and a sealing tape. The mortar fills the gap of the hinge joint, and the sealing tape is pasted on the surface of the mortar to prevent the glue from leaking during grouting, ensure the effective filling of the glue in the hinge joint, and improve the reinforcement effect. The mortar can use anti-sagging polymer mortar or epoxy mortar, and the sealing tape can use fiber-reinforced rubber tape.
[0023] Specifically, both the first grouting layer 3 and the second grouting layer 4 use A, B modified epoxy resin-based structural adhesives.
[0024] The present application also provides a reinforcement method using the above bridge reinforcement device without interrupting traffic, including the following steps: S1. Install a temporary support system: Install a temporary support system at both ends of the hinge joint at the bottom of the beam of the bridge to be reinforced. Gradually stuff the wooden strips 10 between the hinge joints, and fill the foaming glue between adjacent wooden strips 10. Utilize the combination of the wooden strips 10 and the foaming glue layer 11 to quickly provide support for the beam body, limit the vibration amplitude of the beam body, prevent brittle failure, and avoid the aggravation of diseases or the influence on the construction quality caused by vibration during the subsequent construction process. Generally, when the dislocation between the diseased bridge slabs is greater than 5 mm, install a temporary support system; S2. Clean the damaged hinge joint: Initially clean the sundries inside the hinge joint with an electric wire brush to remove loose particles, oil stains, etc., and then rinse with high-pressure water to thoroughly remove the sediment, debris, etc. inside the hinge joint, creating good bonding conditions for subsequent glue injection and the implantation of the self-locking anchor bolts 7; S3. Implant the self-locking anchor bolts 7: Vertically implant the self-locking anchor bolts 7 at the position of the hinge joint at the bottom of the beam, ensure that the anchor heads are inserted into the original hinge joint filler, and arrange them evenly at intervals of 40 - 60 cm to provide mechanical anchoring force for the hinge joint and enhance the connection strength between the beam slabs; S4. Bury the glue injection pipe 1 and the measuring pipe 2: Vertically insert the glue injection pipe 1 and the measuring pipe 2 at the position of the hinge joint at the bottom of the beam. The glue injection pipe 1 and the measuring pipe 2 are evenly provided with multiple groups along the length direction of the hinge joint, and ensure that the top end of the glue injection pipe 1 is 1 cm below the bottom of the original hinge joint filler 5, facilitating the smooth pouring of the glue into the hinge joint. The top end of the measuring pipe 2 is lower than the top end of the glue injection pipe 1 to achieve precise measurement of the glue injection process; S5. Seal the bottom of the hinge joint: Seal the bottom of the hinge joint with the sealing layer 12. Use a trowel to evenly apply the anti - sag polymer mortar on the bottom of the hinge joint, and control the thickness of the mortar to be 5 - 10 mm. During the application process, ensure that the mortar is evenly and smoothly applied, avoiding the occurrence of cavities or uneven thickness, and ensuring that it can effectively prevent the glue from flowing downward. After the anti - sag polymer mortar is applied, immediately paste the sealing tape on the surface of the mortar. When pasting, start from one end and slowly paste it to the other end. At the same time, press the sealing tape with your hand or tools to make it fully fit with the mortar, expel the air between the sealing tape and the mortar, and ensure firm and tight pasting, preventing the occurrence of bubbles or hollowing phenomena. Especially pay attention to the contact surface of the glue injection pipe 1 and the measuring pipe 2, and ensure that it is sealed and does not leak slurry. After the construction is completed, let it stand for at least 48 hours, observe the sealing effect of the hinge joint, and proceed to the next construction step only when there is no abnormality; S6. Primary Glue Injection: Use a pressure injector to inject A and B modified epoxy resin structural glue into the hinge joint through the glue injection pipe 1. The ratio of A and B components is 2:1. The single - time glue mixing amount does not exceed 3 kg, and the glue injection time does not exceed 30 min. Inject the glue without pressure until the glue comes out from the same - group measuring pipe 2. After emptying the glue injection pipe 1, wait for the glue to cure (about 2 hours at 25°C). If the ambient temperature is lower than 15°C, the curing time should be appropriately extended to make the glue preliminarily fill the bottom of the hinge joint and restore part of the bonding force. The prepared glue must be injected immediately. If it is placed for more than 30 min after preparation, the glue should be re - prepared; S7. Secondary Glue Injection: Seal the measuring pipe 2, and use the pressure injector again to inject the same glue through the glue injection pipe 1, controlling the pressure at 0.5 MPa to ensure that the fluidity and penetration performance of the glue are good enough to fill the cracks completely. Keep injecting the glue until the glue oozes from the bridge deck 6 or leaks from the beam end, or the injection reaches and maintains a pressure of 0.5 MPa for 15 min to ensure that the hinge joint is completely filled and further enhance the bonding effect; S8. Install the steel plate 9: After the glue cures, anchor the steel plate 9 at the end of the self - locking anchor rod 7 through the locking nut 8 to effectively transfer the anchoring force of the self - locking anchor rod 7 to the hinge joint structure and enhance the overall reinforcement effect; S9. Remove the temporary support system: At least 48 hours after the construction is completed, remove the temporary support system to restore the normal stress state of the bridge while ensuring the stability and reliability of the reinforcement effect.
[0025] Specifically, in steps S6 and S7, the glue injection sequence is from one end of the hinge joint at the bottom of the beam to the other end. Stop when the glue flows out from the measuring pipe 2, and then move to the next glue injection pipe 1 to continue the glue injection.
[0026] The following further illustrates the present application through specific implementation cases: 1. Project overview: A precast hollow slab bridge on an urban expressway has the disease of "single - plate loading". There are obvious longitudinal cracks at the hinge joints. When heavy vehicles pass, the beam plates move significantly. After detection, the disease is relatively serious, and the widths of some hinge joints are uneven, and traffic - uninterrupted reinforcement treatment is required.
[0027] 2. Construction process: Install the temporary support system: Vertically insert wooden strips 10 at both ends of the hinge joint at the bottom of the beam according to the design requirements, and fill the polyurethane foam glue between adjacent wooden strips 10 to form a foam glue layer 11 to quickly provide stable support for the beam body and limit the vibration of the beam body; Clean the damaged hinge joint: Use an electric wire brush to comprehensively clean the inside of the hinge joint to remove the loose substances and oil stains on the surface; then use a high - pressure water gun to wash and thoroughly remove the sediment, debris, etc. in the hinge joint to ensure that the hinge joint is clean; Insert self-locking anchor rod 7: Drill vertically at the position of the hinge joint at the bottom of the beam according to the designed spacing of 50 cm, and insert self-locking anchor rod 7 to ensure that the anchor head is accurately inserted into the original hinge joint filler. After completion, check the verticality and anchorage depth of the anchor rod; Embed glue injection pipe 1 and measuring pipe 2: Vertically insert glue injection pipe 1 and measuring pipe 2 at the position of the hinge joint at the bottom of the beam. Control the distance between the top of glue injection pipe 1 and the bottom 5 of the original hinge joint filler to be 1 cm, and the distance between the top of measuring pipe 2 and the bottom 5 of the original hinge joint filler to be 12 cm. The distance between glue injection pipe 1 and measuring pipe 2 in the same group is 5 cm to ensure the accuracy of glue injection and measurement; Seal the bottom of the hinge joint: First, fill the bottom of the hinge joint with mortar, and then paste a sealing tape on the surface of the mortar to form a sealing layer 12. After construction, let it stand for 48 hours, and regularly check whether there are cracks or peeling on the sealing layer during this period; Primary glue injection: Prepare A and B modified epoxy resin structural adhesives according to the ratio of A and B components of 2:1, with a single glue preparation of 2 kg. Use a pressure injector to inject glue without pressure. The glue injection is carried out from one end of the hinge joint at the bottom of the beam to the other end. When the glue comes out from the same group of measuring pipe 2, stop the glue injection, empty glue injection pipe 1, and wait for the glue to cure for 2 hours at an ambient temperature of 25 °C; Secondary glue injection: Seal measuring pipe 2, prepare the same glue again, and use a pressure injector to inject glue at a pressure of 0.5 MPa. Observe the bridge deck 6 closely during the glue injection process. The glue injection should continue until the glue oozes out on the bridge deck 6. For the hinge joints without cracks on the bridge deck 6, it should be injected until the glue leaks out at the beam end or the injection reaches and maintains a pressure of 0.5 MPa for 15 minutes; Install steel plate 9: After the glue is completely cured, put steel plate 9 on the end of self-locking anchor rod 7, and firmly fix steel plate 9 at the bottom of the hinge joint by tightening the locking nut 8 to complete the installation of the anchor rod reinforcement system; Remove the temporary support system: 48 hours after the construction is completed, remove the temporary support systems at both ends of the hinge joint, namely wooden strip 10 and foaming glue layer 11.
[0028] 3. Effect detection: After the reinforcement is completed, conduct static load tests and dynamic load tests on the bridge. The test results show that the overall stiffness of the bridge is significantly improved, the dislocation phenomenon between the beam slabs is effectively suppressed, the bonding strength at the hinge joint reaches the design requirements, the bearing capacity of the bridge is significantly enhanced, meeting the traffic passing requirements of the urban expressway. During the subsequent long-term monitoring, no new diseases have been found on the bridge, and the reinforcement effect is stable and reliable.
[0029] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.
Claims
1. A bridge reinforcement device without interrupting traffic, characterized in that: include: A hinge joint glue injection system, comprising a glue injection tube (1), a measuring tube (2), a first glue injection layer (3) and a second glue injection layer (4), wherein the glue injection tube (1) and the measuring tube (2) are evenly arranged in a plurality of groups along the length direction of the hinge joint, and the top of the glue injection tube (1) is lower than the bottom (5) of the original hinge joint filler, the top of the measuring tube (2) is lower than the top of the glue injection tube (1), the upper surface of the first glue injection layer (3) is flush with the top of the measuring tube (2), and the upper surface of the second glue injection layer (4) is flush with the top of the bridge deck (6); An anchor rod reinforcement system, comprising a self-locking anchor rod (7), a locking nut (8) and a steel plate (9), wherein a plurality of the self-locking anchor rods (7) are evenly arranged along the length direction of the hinged joint, and the anchor head of the self-locking anchor rod (7) is located in the second glue injection layer (4), and the end of the self-locking anchor rod (7) passes through the bottom of the hinged joint and is threadedly connected to the locking nut (8), and the steel plate (9) is sleeved on the end of the self-locking anchor rod (7), and the steel plate (9) is fixed between the bottom of the hinged joint and the locking nut (8) by tightening the locking nut (8); A temporary support system, comprising two groups, each located at the two ends of the hinged joint, and each group comprising a wooden strip (10) and a foamed rubber layer (11), wherein the wooden strip (10) is vertically inserted into the hinged joint, and there are at least two wooden strips (10), and the foamed rubber layer (11) is filled between two adjacent wooden strips (10); The bottom of the hinged joint is also filled with a sealing layer (12).
2. A bridge reinforcement device without interrupting traffic according to claim 1, characterized in that: The injection tube (1) and the measuring tube (2) are both made of PVC wire tube, and the distance between the top of the injection tube (1) and the bottom of the original hinged joint filler (5) is 0.8-1.2 cm, the distance between the top of the measuring tube (2) and the bottom of the original hinged joint filler (5) is 3-15 cm, and the distance between the injection tube (1) and the measuring tube (2) in the same group is 4-6 cm.
3. The bridge reinforcement device without interrupting traffic according to claim 1, characterized in that: The first glue injection layer (3) and the second glue injection layer (4) are both made of A and B modified epoxy resin structural adhesive.
4. The bridge reinforcement device without interrupting traffic according to claim 1, characterized in that: The foam glue layer (11) is made of polyurethane foam glue.
5. The bridge reinforcement device without interrupting traffic according to claim 1, characterized in that: The sealing layer (12) comprises mortar and a sealing tape, wherein the mortar is filled in the hinged joint, and the sealing tape is adhered to the surface of the mortar.
6. A method for reinforcing a bridge without interrupting traffic using the bridge reinforcement device according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. Install a temporary support system: Install a temporary support system at both ends of the hinge joint at the bottom of the bridge to be reinforced. The temporary support system limits the vibration amplitude of the beam to prevent brittle failure; S2. Clean the damaged hinge joint: Use an electric wire brush and high-pressure water to flush out debris inside the hinge joint; S3, implanting self-locking anchor rods (7): vertically implanting self-locking anchor rods (7) at the hinge joint position at the bottom of the beam, a plurality of self-locking anchor rods (7) are evenly arranged along the length direction of the hinge joint, and the anchor heads of the self-locking anchor rods (7) are inserted into the original hinge joint filler; S4, burying the glue injection tube (1) and the measuring tube (2): vertically insert the glue injection tube (1) and the measuring tube (2) at the hinge joint position at the bottom of the beam, and evenly arrange multiple groups of the glue injection tube (1) and the measuring tube (2) along the length direction of the hinge joint, and ensure that the top end of the glue injection tube (1) is lower than the bottom end (5) of the original hinge joint filler, and the top end of the measuring tube (2) is lower than the top end of the glue injection tube (1); S5, sealing the bottom of the hinged joint: using a sealing layer (12) to seal the bottom of the hinged joint, and leaving it to stand for at least 48 hours after the sealing is completed; S6, primary glue injection: using a pressure injector to inject glue into the hinged joint through the glue injection tube (1), injecting glue without pressure to the measuring tube (2) of the same group to discharge glue, emptying the glue injection tube (1) and waiting for the glue to solidify; S7, secondary glue injection: seal the measuring tube (2), use a pressure injector to inject glue into the hinge joint through the glue injection tube (1), control the pressure to 0.5 MPa, and continue to inject glue until glue leaks out of the bridge deck (6) or the beam end, or until the injection reaches and maintains a pressure of 0.5 MPa for 15 minutes; S8, installing the steel plate (9): after the adhesive is solidified, the steel plate (9) is anchored at the end of the anchor rod by means of a locking nut (8); S9. Dismantling of temporary support system: After the construction is completed, the temporary support system shall be dismantled at least 48 hours later.
7. A bridge reinforcement method without interrupting traffic according to claim 6, characterized in that: In steps S6 and S7, the glue liquid adopts A and B modified epoxy resin structural glue, the ratio of A and B components in the glue injection is 2:1, the single glue preparation amount does not exceed 3kg, and the glue injection time does not exceed 30min.
8. A method for strengthening a bridge without interrupting traffic according to claim 7, characterized in that: In steps S6 and S7, the order of glue injection is from one end of the hinge joint at the bottom of the beam to the other end.
9. The method for strengthening a bridge without interrupting traffic according to claim 6, characterized in that: In step S3, the distance between two adjacent self-locking anchor rods (7) is 40-60 cm.