A reinforcing device for a steel structure bridge

Abstract

The utility model relates to a kind of steel structure bridge reinforcing device, including a pair of oppositely arranged clamping components, for clamping bridge component;Buffer layer is set to the inside of clamping component, for contact with bridge component and buffer pressure, prevent damaging component surface;Locking device, through clamping component, for exerting clamping force to clamping component, to realize the stable connection of reinforcing device to bridge component.The device structure is simple, easy to install, without drilling or welding operation to original bridge component, avoid destroying its integrity, and have good buffering capacity and versatility, suitable for the reinforcement construction of a variety of bridge type components.The utility model solves the technical problems of destructive to original component in the reinforcing method of existing steel structure bridge, lack of buffer function, poor structure versatility and low construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bridge reinforcement technology, and in particular to a steel structure bridge reinforcement device. Background Technology

[0002] Steel structure bridges are widely used in urban elevated roads, highways, railways, and other fields due to their advantages such as high strength, light weight, and rapid construction. However, with increasing service life, bridge components are prone to problems such as localized cracks, loose connections, and stiffness degradation due to traffic loads, fatigue accumulation, and environmental corrosion. Therefore, strengthening bridges has become a crucial aspect of maintenance engineering to extend their lifespan and improve structural safety.

[0003] Existing methods for strengthening steel bridges mainly include welded reinforcing plates, bolted connections, external steel structure support devices, and carbon fiber cloth bonding reinforcement. While these methods can improve the load-bearing capacity of local bridge components to some extent, they generally suffer from the following drawbacks: First, they require drilling or welding, compromising the integrity of the original components; second, they utilize pure steel structures, lacking the ability to buffer dynamic loads; third, they are structurally complex, have low installation efficiency, and are difficult to adapt to various bridge types; and fourth, most components are custom-made, resulting in low versatility and standardization.

[0004] Therefore, this utility model proposes a steel structure bridge reinforcement device to solve the technical problems of existing steel structure bridge reinforcement methods, such as destructiveness to the original components, lack of buffer function, poor structural versatility, and low construction efficiency. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a steel structure bridge reinforcement device to address the technical problems of destructive effects on the original components, lack of buffering function, poor structural versatility, and low construction efficiency in existing steel structure bridge reinforcement methods. The steel structure bridge reinforcement device includes: a pair of clamping assemblies, arranged opposite each other, for clamping bridge components; a buffer layer disposed inside the clamping assemblies for contacting the bridge components and buffering pressure; and a locking device penetrating the clamping assemblies for applying a clamping force to the clamping assemblies.

[0006] In one possible implementation, the buffer layer is an elastic material layer, wherein the elastic material is any one or a combination of rubber, ethylene propylene rubber (EPDM), and foamed metal, with a thickness of 4 to 10 mm and a damping loss coefficient of not less than 0.3.

[0007] In one possible implementation, the locking device includes at least two high-strength lead screws that pass through the clamping assembly and are locked in place by matching nuts. The two ends of the lead screws are provided with anti-loosening structures, which include locking washers and self-locking nuts.

[0008] In one possible implementation, the clamping assembly includes two symmetrically arranged steel clamps, which are rectangular plate structures, and the outer surfaces of the clamps are provided with reinforcing ribs to improve bending stiffness.

[0009] In one possible implementation, the outer surface of the clamping assembly is provided with an anti-corrosion coating, which is a composite coating of epoxy zinc-rich primer and fluorocarbon topcoat.

[0010] In one possible implementation, a limiting component is provided on the outside of the clamping assembly, the limiting component including a limiting block that is slidably mounted along the clamping plate for adapting to bridge components with different cross-sectional dimensions and different widths.

[0011] In one possible implementation, the limiting block and the clamping plate are connected by a slot positioning structure, which facilitates replacement or adjustment.

[0012] In one possible implementation, the preload of the lead screw is 10kN to 30kN, and the spacing between the lead screws is set to be evenly spaced according to the width of the bridge components.

[0013] In one possible implementation, the bridge component is any of the main girder web, flange, and concentrated stress points of the nodes of a steel structure bridge.

[0014] In one possible implementation, a sensor mounting position is provided on the outer surface of the clamping assembly. The sensor mounting position is located in the edge reinforcement area of ​​the clamping plate, away from the through hole of the locking device. The sensor mounting position includes a welded mounting base plate, which is welded to the outer surface of the clamping plate. A threaded hole is provided on the base plate for mounting a strain gauge sensor. The strain gauge sensor indirectly contacts the bridge component through the clamping assembly and is used to collect information on strain changes generated by the bridge component during operation.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0016] This utility model provides a steel structure bridge reinforcement device, comprising a pair of clamping components, a buffer layer, and a locking device penetrating the clamping components. Addressing issues such as component damage, poor structural adaptability, and low construction efficiency during steel structure bridge reinforcement, it proposes a non-destructive reinforcement structure design. Technically, the opposing arrangement of the pair of clamping components covers both sides of the bridge component and achieves stable clamping. Combined with the internal buffer layer, utilizing the vibration absorption and buffering characteristics of high-damping elastic materials such as rubber, EPDM rubber, or foamed metal, it effectively reduces the direct stress impact on the original component during clamping, avoiding component damage caused by rigid contact. Simultaneously, through the penetrating action of the locking device, a high-strength screw applies a uniform and controllable clamping force to the clamping components, ensuring the stability and safety of the overall structure. This structure eliminates the need for destructive operations such as drilling and welding on the original bridge component, improving the convenience and construction efficiency of the installation process. Furthermore, it is adaptable to bridge components with different cross-sectional shapes, achieving a universal application of the reinforcement device. This effectively solves the technical problems of existing steel structure bridge reinforcement methods, such as damage to the original components, lack of buffer function, poor structural versatility, and low construction efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the steel structure bridge reinforcement device provided in this embodiment of the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the mechanism from another perspective.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Clamping assembly; 2. Buffer layer; 3. Locking device; 4. Lead screw; 5. Anti-loosening structure; 6. Locking washer; 7. Self-locking nut; 8. Reinforcing rib; 9. Limiting assembly; 10. Sensor mounting position. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] Figure 1 A schematic diagram of the steel structure bridge reinforcement device provided in this embodiment of the utility model; Figure 2 for Figure 1 A schematic diagram of the mechanism from another perspective.

[0027] Please see Figure 1-2The steel structure bridge reinforcement device of this utility model includes a pair of clamping components 1, a buffer layer 2, and a locking device 3 penetrating the clamping components 1. The clamping components 1, arranged opposite each other, cover both sides of the bridge component, ensuring stable clamping of the bridge component during the reinforcement process. The clamping components 1 are made of high-strength steel, possessing sufficient tensile strength and bending stiffness to withstand the enormous external forces that the bridge may bear during long-term use. A buffer layer 2 is provided inside the clamping components 1. This buffer layer 2 is composed of high-damping elastic materials such as rubber, ethylene propylene rubber, or foamed metal; the material selection is based on its excellent vibration absorption, buffering, and durability characteristics. The buffer layer 2 can effectively disperse the clamping force during the clamping process, reducing direct stress impact on the surface of the bridge component and avoiding surface damage caused by rigid contact.

[0028] The locking device 3 applies a uniform and controllable clamping force via a high-strength lead screw 4. The high-strength lead screw 4 is made of alloy steel, possessing excellent corrosion resistance and high strength, capable of withstanding high-load operation during long-term use. Both ends of the high-strength lead screw 4 are secured by self-locking nuts 7 and locking washers 6, ensuring that the high-strength lead screw 4 will not loosen due to vibration or external forces. By rotating the high-strength lead screw 4, the clamping assembly 1 can gradually approach the bridge component and apply a stable clamping force, ensuring that the bridge component is uniformly and stably clamped. The magnitude of the clamping force can be precisely controlled by the rotation angle, ensuring the adjustability and reliability of the reinforcement effect.

[0029] This reinforcement device design eliminates the need for destructive operations such as drilling and welding on the original bridge components, avoiding the damaging effects of traditional reinforcement methods and improving construction efficiency. By adjusting the structural design of the clamping assembly 1 and precisely controlling the locking device 3, it can be adapted to bridge components with different cross-sectional shapes and sizes, achieving broad versatility and adaptability.

[0030] In practical applications, this reinforcement device is suitable for different parts of steel bridge structures, such as the web of the main girder, flange plates, and other areas with significant stress variations. When a bridge experiences localized deformation or damage due to long-term loads, environmental factors, or aging, this device can effectively reinforce it, improving its load-bearing capacity and preventing further damage to components. The design of the buffer layer 2 effectively protects the components from excessive stress concentration, ensuring the stability of the bridge after reinforcement. The uniform clamping force provided by the locking device 3 ensures the long-term stability of the reinforcement effect and is unaffected by changes in the external environment (such as temperature and humidity). This device can operate normally in extreme environments such as high temperature, low temperature, or humidity, providing an efficient and safe reinforcement solution.

[0031] In one possible implementation, the buffer layer 2 is an elastic material layer, wherein the elastic material is any one or a combination of rubber, ethylene propylene rubber (EPDM) and foamed metal, with a thickness of 4 to 10 mm, a damping loss coefficient of not less than 0.3, and an elastic modulus of not less than 5 MPa.

[0032] The buffer layer 2 is installed on the inner side of the clamping assembly 1 and directly contacts the bridge component. Through the elastic deformation characteristics of the material itself, the buffer layer 2 undergoes compressive deformation during the clamping force applied by the clamping device. This effectively disperses the concentrated force that was originally acting directly on the component surface into surface contact, thereby reducing the stress per unit area on the component surface. Rubber and EPDM rubber materials have good recovery and aging resistance, enabling them to maintain stable performance under long-term clamping loads; the foamed metal provides energy dissipation channels within its porous structure, effectively suppressing vibration propagation and improving the overall damping capacity of the system. These materials can be used individually or bonded together to achieve a combination that addresses buffering, vibration isolation, and compatibility requirements.

[0033] The thickness of buffer layer 2 is set between 4 and 10 mm, optimized based on factors such as clamping force transmission efficiency, component surface adaptability, and material deformation space. Within this thickness range, it provides sufficient buffering and vibration isolation without significantly increasing the clamping gap or reducing clamping force stability. The damping loss coefficient is not less than 0.3, ensuring good energy dissipation capacity under low-frequency dynamic loads generated by bridge operation, effectively suppressing clamping loosening caused by vehicle loads, wind vibration, etc. The elastic modulus is not less than 5 MPa, ensuring that buffer layer 2 will not undergo creep deformation or crush failure under continuous clamping force, meeting the stiffness and stability requirements of steel structure reinforcement.

[0034] Through the above settings, the buffer layer 2 can effectively improve the protection capability of the bridge reinforcement device for the original components without interfering with the main function of the clamping structure, while enhancing the structural adaptability and operational stability, and meeting the usage requirements under various working conditions such as high-frequency vibration, temperature and humidity changes and long-term loads.

[0035] Please see Figure 1-2In one possible implementation, the locking device 3 includes at least two high-strength lead screws 4, which pass through the clamping assembly 1 and are locked in place by matching nuts. Each lead screw 4 has an anti-loosening structure 5 at both ends, which includes a locking washer 6 and a self-locking nut 7. The high-strength lead screws 4 are made of alloy steel or stainless steel, specifically 40Cr alloy steel or 304 stainless steel. These materials possess high strength, excellent corrosion resistance, and wear resistance, enabling them to withstand significant external forces without deformation or breakage during long-term use. The diameter of the lead screws 4 can be 10mm to 20mm, and the length is customized according to the reinforcement requirements of the bridge components, generally between 100mm and 300mm, ensuring that the lead screws 4 can provide sufficient clamping force and are not easily affected by external vibrations or load fluctuations.

[0036] When installing the lead screw 4, first pass the lead screw 4 through the center hole of the clamping assembly 1, ensuring a tight fit between the lead screw 4 and the clamping assembly 1. One end of each lead screw 4 is secured with a nut, while the other end is locked with a self-locking nut 7. The self-locking nut 7 is a nut with a specific internal structure, such as a nylon-embedded nut. This structure generates additional friction when clamping force is applied, thus preventing the nut from loosening under long-term use or vibration. The other side of the nut is equipped with a locking washer 6, which is usually made of metal or high-strength plastic material and has strong elasticity and friction, further enhancing the fastening effect between the nut and the lead screw 4.

[0037] During installation, first pass the high-strength lead screw 4 through the clamping assembly 1 and ensure that both ends of the lead screw 4 are correctly aligned. When rotating and adjusting the lead screw 4, use a torque wrench to ensure that the clamping force of each lead screw 4 is uniform and stable. After all the lead screws 4 are tightened, the double anti-loosening structure of the self-locking nut 7 and the locking washer 6 is used to ensure that the lead screw 4 will not loosen due to vibration or long-term external force, thereby ensuring the stability of the reinforcement device during operation.

[0038] This design, combining the high-strength lead screw 4 and the locking device 3, ensures the high efficiency, stability, and long-term reliability of the reinforcement device. The anti-loosening structure 5 effectively prevents nut loosening, especially in bridge reinforcement projects subject to periodic vibration or external load fluctuations, enhancing the device's durability and reliability.

[0039] In one possible implementation, the clamping assembly 1 includes two symmetrically arranged steel clamping plates, the clamping plates having a rectangular plate structure, and the outer surface of the clamping plates being provided with reinforcing ribs 8 to improve bending stiffness.

[0040] Specifically, each clamping plate is made of Q235B structural steel plate with a thickness of not less than 6 mm. It is in the shape of a rectangular flat plate, and is laser-cut to a standard size. Multiple through holes are machined in the middle of the clamping plate for high-strength screw rods to pass through and fix it. The size of the clamping plate is customized according to the actual width of the bridge component, and its length is arranged along the axis of the bridge component to ensure that the direction of force is consistent with the direction of reinforcement and improve the stability of the clamping effect.

[0041] Please see Figure 1-2 Multiple reinforcing ribs 8 are arranged longitudinally or transversely on the outer surface of the clamping plate. These ribs 8 are made of steel bars of the same material and are welded to the outer surface of the clamping plate using CO2 gas shielded welding. The cross-section of the reinforcing ribs 8 is typically equilateral angle steel or channel steel. The welding position is preferably avoided from the through hole of the lead screw 4 to ensure uniform strength distribution. The function of the reinforcing ribs 8 is to provide additional bending stiffness and local strength when the clamping plate is subjected to clamping force and external stress, preventing deformation of the clamping plate itself and ensuring the reliability of the overall clamping system during operation.

[0042] Without increasing volume, this clamp structure significantly improves the bending stiffness and overall rigidity of the components by setting up reinforcing ribs 8, effectively ensuring the stability of the reinforcement device under high load conditions. It is suitable for steel structure bridges in high-frequency traffic load environments or with local damage.

[0043] In one possible implementation, the outer surface of the clamping assembly 1 is provided with an anti-corrosion coating, which is a composite coating of epoxy zinc-rich primer and fluorocarbon topcoat.

[0044] Specifically, after the clamping assembly 1 is processed and welded, its outer surface is first sandblasted to remove rust, reaching the Sa2.5 standard to ensure coating adhesion. The first coating is an epoxy zinc-rich primer with a typical dry film thickness of 60-80 micrometers. This primer has a high zinc content and excellent cathodic protection performance, forming a dense protective film on the steel surface to resist oxidation corrosion. After the primer cures, a fluorocarbon topcoat is applied to the surface with a dry film thickness of 40-60 micrometers. Fluorocarbon resin has extremely high weather resistance, UV resistance, and damp heat resistance, maintaining good adhesion and color stability during long-term outdoor use.

[0045] This composite coating structure not only resists external corrosive media such as rainwater, acids, alkalis, and industrial pollutants, but also possesses high mechanical strength and wear resistance, making it suitable for bridges exposed to long-term wind, sun, high humidity, and drastic temperature changes. The coating application process utilizes air spraying, and if necessary, multiple layers can be applied to increase the total coating thickness, thus meeting the corrosion resistance requirements under specific environmental conditions.

[0046] Through the above-mentioned anti-corrosion coating treatment, the clamping component 1 has long-term stable protective performance, which greatly improves the reliability and service life of the reinforcement device and is suitable for application scenarios with high durability requirements in field bridge reinforcement projects.

[0047] Please see Figure 1-2 In one possible implementation, a limiting component 9 is provided on the outside of the clamping assembly 1. The limiting component 9 includes a limiting block that is slidably installed along the clamping plate to adapt to bridge components with different cross-sectional dimensions and different widths.

[0048] Specifically, the limiting block is connected to the outside of the clamping plate via a sliding groove and a guide rail. The sliding groove is located on the outer edge of the clamping plate, while the guide rail is fixed to the outer frame of the clamping assembly 1. The design of the limiting block ensures that it can slide freely on the outside of the clamping assembly 1, thereby adjusting the clamping position according to the size of different bridge components and adapting to components with different cross-sectional shapes. An adjusting bolt is provided inside the limiting block; rotating the bolt allows adjustment of the limiting block's position, ensuring a tight and stable contact between it and the bridge component.

[0049] The limiting blocks can be made of high-strength steel or aluminum alloy, which have good corrosion resistance and wear resistance, and can withstand the external forces generated during clamping. The dimensions of the limiting blocks are designed according to the different widths of the bridge components, and different sizes of limiting blocks can be used to meet the diverse needs of bridge components.

[0050] The limiting component 9 ensures that the reinforcement device can be stably installed and provide sufficient clamping force when facing bridge components of different sizes and shapes. This design makes the reinforcement device highly versatile and applicable to the reinforcement of various bridge components. In particular, it can be flexibly adjusted to adapt to various working conditions when the bridge has irregular cross-sections or the dimensions of the bridge components change.

[0051] In one possible implementation, the limiting block and the clamping plate are connected by a slot positioning structure, which facilitates replacement or adjustment.

[0052] Specifically, the limiting block and the clamping plate are connected via a slot positioning structure. The slot is located on one side of the limiting block and precisely matches the protrusion on the outer side of the clamping plate. The size and position of the slot are designed according to the installation requirements of the limiting block and the dimensions of the bridge components to ensure that the limiting block will not loosen or shift during sliding. The slot positioning structure allows the limiting block to maintain a stable position during adjustment, preventing slippage caused by vibration or external forces generated during clamping, thereby maintaining the stability of the reinforcement device.

[0053] This slot positioning structure also allows for easy replacement or adjustment of the limit block in different working environments. If the limit block wears or is damaged during use, it can be directly removed and replaced with a new one. This structural design makes the reinforcement device more flexible in adapting to different bridge components, reducing maintenance costs and the complexity of replacement.

[0054] The limit block is made of high-strength steel or wear-resistant alloy material to ensure it can withstand large clamping forces and wear during long-term use. The connection method between the limit block and the clamping plate not only ensures stability but also meets the requirements of durability and reliability for long-term use.

[0055] In one possible implementation, the preload of the lead screw 4 is 10kN to 30kN, and the spacing between the lead screws 4 is set to be evenly spaced according to the width of the bridge components.

[0056] During the installation of the reinforcement device, the tightening degree of the lead screws 4 is controlled to ensure that the preload applied to each lead screw 4 after installation is within the range of 10kN to 30kN. This range is calculated based on the typical stress requirements of steel structure bridge components and the material strength of the clamping assembly 1, ensuring sufficient clamping force while avoiding deformation of the clamping plate or bridge components due to excessive preload. A torque wrench or hydraulic tensioning device is used to apply the preload, ensuring consistent clamping force on each lead screw 4 and improving overall stress uniformity.

[0057] The lead screws 4 are arranged at equal intervals on the clamping assembly 1, and the spacing is determined based on the actual width of the bridge component being reinforced. For standard bridge webs or flanges, the width is typically between 300mm and 800mm, and one lead screw 4 can be arranged every 100mm or 150mm to ensure that the clamping force is evenly distributed across the entire clamping surface. This equal-interval arrangement not only optimizes the structural stress state but also facilitates rapid on-site installation and subsequent maintenance.

[0058] This arrangement effectively controls the distribution of clamping forces, preventing damage to bridge components due to localized stress concentration and improving the overall stability and reliability of the structural reinforcement. Furthermore, the uniform spacing facilitates standardized production and modular assembly, making it suitable for on-site reinforcement operations of various types of steel bridge structures.

[0059] In one possible implementation, the bridge component is any one of the main girder web, flange, and concentrated stress points of a steel structure bridge.

[0060] This reinforcement device is suitable for typical critical stress areas in bridge structures, including the web of the main girder, the upper flange, the lower flange, and structural nodes. These areas typically bear the main bending moments, shear forces, or concentrated loads, and are the locations most prone to fatigue, deformation, or cracking during bridge operation. To address the reinforcement needs of these components, the reinforcement device uses clamping assembly 1 to apply external pressure constraints and an internal buffer layer 2 to provide flexible buffering and stress dispersion, thereby strengthening the structure without damaging the original components.

[0061] In the application of main girder web reinforcement, strengthening devices are typically arranged longitudinally along the bridge to cover the crack propagation path in the web area, limiting lateral displacement of the web by applying transverse clamping forces. In flange reinforcement, strengthening devices are used to improve flange bending stiffness, especially when localized deflection occurs on the bridge deck, enhancing the overall cross-sectional integrity through clamping. At stress-concentrated joints, clamping devices can provide additional constraint forces to the connection area without altering the original joint structure, effectively suppressing localized deformation and cracking in the connecting plates, bolt hole areas, or weld areas.

[0062] Because this device eliminates the need for destructive operations such as cutting or drilling into bridge components, it is particularly suitable for repairing existing bridges and reinforcing structures in operation. By adapting and installing different component types, reinforcement can be completed without interrupting traffic or dismantling the structure, thereby improving the safety and durability of bridges in service.

[0063] Please see Figure 1-2 In one possible implementation, a sensor mounting position 10 is provided on the outer surface of the clamping assembly 1. The sensor mounting position 10 is located in the edge reinforcement area of ​​the clamping plate, away from the through hole of the locking device 3. The sensor mounting position 10 includes a welded mounting base plate, which is welded to the outer surface of the clamping plate. A threaded hole is provided on the base plate for mounting a strain gauge sensor. The strain gauge sensor indirectly contacts the bridge component through the clamping assembly 1 to collect information on strain changes generated by the bridge component during operation.

[0064] In practice, the sensor mounting position 10 is selected from the edge area of ​​the clamping assembly 1, and is preferably located near the reinforcing rib 8 of the clamping plate but away from the through hole of the locking device 3, to avoid affecting the sensor accuracy due to strain interference or structural stress concentration. The mounting base plate is usually made of Q235 steel plate or stainless steel, with a thickness of 3-5 mm, and is firmly welded to the clamping plate by CO2 shielded welding. The base plate is machined with standard M6 or M8 threaded holes for easy installation of commercially available standard strain gauge sensors.

[0065] After the strain gauge sensor is installed, its sensitive element can indirectly sense the stress changes of the bridge components through the outer wall of clamping assembly 1. The sensor signal is led out to the data acquisition system through wires to realize real-time monitoring of the bridge components under service conditions. Through this design, structural operation data can be obtained without damaging the bridge structure, providing a basis for subsequent health assessment and maintenance decisions.

[0066] This sensor mounting structure features easy installation, stable signal, and reliable structure, making it suitable for scenarios such as bridge operational status monitoring, reinforcement effect evaluation, and long-term health management.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A steel structure bridge reinforcement device, characterized in that, include: Clamping assemblies, which are arranged opposite each other, are used to clamp bridge components; A buffer layer, disposed inside the clamping assembly, is used to contact the bridge components and buffer pressure; A locking device extends through the clamping assembly and is used to apply a clamping force to the clamping assembly.

2. The steel structure bridge reinforcement device according to claim 1, characterized in that, The buffer layer is an elastic material layer, which is any one or a combination of rubber, ethylene propylene rubber and foam metal, with a thickness of 4 to 10 mm and a damping loss coefficient of not less than 0.

3.

3. The steel structure bridge reinforcement device according to claim 1 or 2, characterized in that, The locking device includes at least two high-strength lead screws, which pass through the clamping assembly and are locked in place by matching nuts. The two ends of the lead screws are provided with anti-loosening structures, which include locking washers and self-locking nuts.

4. The steel structure bridge reinforcement device according to claim 1, characterized in that, The clamping assembly includes two symmetrically arranged steel clamping plates. The clamping plates are rectangular plate structures, and the outer surface of the clamping plates is provided with reinforcing ribs to improve bending stiffness.

5. The steel structure bridge reinforcement device according to claim 4, characterized in that, The outer surface of the clamping assembly is provided with an anti-corrosion coating, which is a composite coating of epoxy zinc-rich primer and fluorocarbon topcoat.

6. The steel structure bridge reinforcement device according to claim 4, characterized in that, The clamping assembly is provided with a limiting component on its outer side. The limiting component includes a limiting block that can be slidably installed along the clamping plate, which is used to adapt to bridge components with different cross-sectional dimensions and different widths.

7. The steel structure bridge reinforcement device according to claim 6, characterized in that, The limiting block and the clamping plate are connected by a slot positioning structure, which facilitates replacement or adjustment.

8. The steel structure bridge reinforcement device according to claim 3, characterized in that, The preload of the lead screw is 10kN to 30kN, and the spacing between the lead screws is set to be evenly spaced according to the width of the bridge components.

9. The steel structure bridge reinforcement device according to claim 1, characterized in that, The bridge component is any part of the main beam web, flange plate, and concentrated stress area of ​​the node of a steel structure bridge.

10. The steel structure bridge reinforcement device according to claim 4, characterized in that, The outer surface of the clamping assembly is provided with a sensor mounting position, which is located in the edge reinforcement area of ​​the clamping plate, away from the through hole of the locking device. The sensor mounting position includes a welded mounting base plate, which is welded to the outer surface of the clamping plate and has a threaded hole. The threaded hole is used to install a strain gauge sensor. The strain gauge sensor indirectly contacts the bridge component through the clamping assembly and is used to collect information on strain changes generated by the bridge component during operation.

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