MULTAXIAL BRIDGE SUSPENSION CABLE THAT PASSIVELY DAMPENS WIND-INDUCED DYNAMIC VIBRATIONS. VIBRATION DAMPING DEVICE
Patent Information
- Application Number
- TR202613381
- Authority / Receiving Office
- TR · TR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2026-08-07
- Publication Date
- 2026-08-21
Smart Images
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Abstract
Description
1 TARIFF PASSIVELY DEPLETING WIND-INDUCED DYNAMIC VIBRATIONS DAMPENING MULTAXIAL BRIDGE SUSPENSION ROPE VIBRATION DAMPING DEVICE Technological Field: 5 The invention relates to civil engineering, bridge engineering, structural dynamics, and structural vibration control. systems, passive mechanical damping technologies and large span bridge supports This relates to the technical field of vibration reduction devices for systems. More specifically... The invention refers to structures that use suspension cables, such as suspension bridges, inclined cable-stayed bridges, and similar structures. Passive mechanical analysis of dynamic vibrations caused by wind in engineering structures. 10 multi-functional cables that reduce cable loads by being integrated into the bridge suspension cable. It relates to an axial vibration damping system. The invention consists of a carrier clamp system fixed onto a suspension cable. multi-axis motion mechanism, elastic suspension elements, viscous damping structures, vibration redirection mechanisms and dynamic load 15 By the balancing elements working together, the differences that occur in the suspension cable are mitigated. controlled absorption of vibration energy in the directions, a fully mechanical system that enables its direction, distribution and damping It includes a vibration control system. The invention relates, in particular, to wind-induced vortex shedding, Aeolian vibrations, 20 Wake galloping, oscillations resulting from rain-wind interaction, and similar phenomena. vibrations occurring in suspension cables as a result of aerodynamic loadings The aim is to reduce and limit the resonance effects that may occur in ropes. Reducing vibration amplitudes, minimizing fatigue damage, and improving dynamic stability. and the long-term structural performance of the bridge support system to be improved 25 It includes mechanical solutions aimed at improvement. The invention also includes any external power source, electronic control unit, sensor. Fully passive mechanical, without the need for a system or active drive mechanism. bridge suspension cables of different diameters and specifications that operate on the same working principle. It relates to an adaptable modular vibration damping system. The 30 in question... The system can be applied directly to newly constructed bridges as well as to existing bridges. Improving structural vibration performance, extending fatigue life, and maintenance. 2 In order to reduce the need, it can be integrated later. It has been designed. In this respect, the invention addresses the multi-axis dynamics occurring in bridge suspension systems. the control of vibrations through passive mechanical methods, the conversion of vibration energy bridge 5 aimed at controlled management and increased structural reliability. Vibration control and structural damping technologies fall within this technical field. State of the Art: Today, suspension bridges, cable-stayed bridges, and similar long-span structural bridges are common. Suspension ropes used in systems withstand wind loads, traffic loads, temperature variations, dynamic 10 with continuously variable character due to seismic effects and other environmental loadings It is exposed to forces. In particular, vortex formation (vortex breaking) caused by the effect of wind. (shedding), Aeolian vibrations, wake galloping and rain-wind interaction The resulting aerodynamic vibrations have different frequencies and amplitudes in the suspension ropes. This can cause oscillations. These oscillations can occur in suspension cables over time. fatigue damage occurs, loosening of connection clamps, 15 in anchorage areas stress concentrations, wear on fasteners, and overall structural damage to the bridge. This can negatively affect their performance. In known technology, a tuned mass is used to reduce these vibrations. dampers, viscous dampers, elastomer-based damping elements, friction mechanical linkages, externally mounted vibration dampers, and various passive or active 20 control systems are used. However, a significant portion of these systems Because it is optimized for specific vibration frequencies, it can be used under varying wind conditions. It cannot respond with equal effectiveness to the different vibration modes that occur. Furthermore, many The system is designed to reduce oscillations in only one axis, not in multiple axes. It may be insufficient for simultaneously controlling dynamic behaviors. 25 Suspension due to the continuous change in wind characteristics over time. The vibration frequencies, amplitudes, and directions of vibrations occurring in the ropes are also constantly changing. It changes. Constant characteristic damping systems, on the other hand, deal with this variable dynamic. They are unable to adapt their behaviors to all working conditions, and to specific working intervals. In addition, a significant reduction in damping performance may occur. 30 As a result, this is especially true in working conditions that approach resonance regions. There is a risk that vibrations may not be adequately controlled. 3 In a significant number of current solutions, vibration energy is concentrated only at specific points. It is damped and vibration loads are controlled in different directions. steering, balancing and distribution within the same mechanical system This is not possible. This situation is due to the multi-axial dynamic loads generated in the suspension cable. inability to manage vibration energy effectively, resulting in uncontrolled release of vibration energy throughout the structure. This leads to its spread and the formation of local stress concentrations in some regions. It is possible. On the other hand, active control systems include sensors, electronic control units, and actuators. and their use of external energy sources increases system complexity, first increasing investment and maintenance costs, power outages or electronic component 10 In case of malfunctions, these systems may experience a loss of performance. Furthermore, the current state of these systems... Applying this to bridges often requires additional infrastructure investments and assembly. This complicates the processes. For these reasons, wind-induced dynamic vibrations are simultaneously detected in different directions. capable of absorbing, mechanically directing and distributing vibration energy, and 15 fully capable of controlled damping, directly integrated into the suspension cable. Operating on a passive mechanical working principle, it can be designed in a modular structure and requires maintenance. a new system with low requirements, long lifespan and easy applicability to existing bridge systems A bridge suspension cable vibration damping system is required. Purpose of the invention: 20 The purpose of the invention is to create suspension bridges, cable-stayed bridges, and similar structures that use suspension cables. passive mechanical systems of wind-induced dynamic vibrations in engineering structures. multi-axis motion capability that enables effective reduction through various methods The goal is to develop a vibration damping system for bridge suspension cables. Another purpose of the invention is to prevent eddy breakage in suspension ropes caused by wind. 25 (vortex shedding), Aeolian vibrations, wake galloping, rain-wind interaction oscillations and similar vibrations caused by aerodynamic loads mechanically absorbs, directs, distributes, and controls energy. The goal is to create an integrated mechanical system that dampens the moisture. One of the aims of the invention is to detect 30 different wind speeds and varying environmental loads. the resulting variable frequency, different amplitude and multidirectional vibrations, any an adaptive passive mechanical system that can adapt without using an electronic control system 4 The goal is to develop a damping mechanism. This will allow the system to operate under different operating conditions. The aim is to maintain its effectiveness and improve vibration control performance. Another objective of the invention is to enable elastic suspension elements and multi-axis motion. mechanism, dynamic load balancing structures and viscous damping systems 5 that enable the controlled management of vibration energy thanks to their combined operation The goal is to create a compact and highly efficient mechanical device. This will reduce vibration. preventing the concentration of loads at a single point, distributing the loads within the system balanced distribution of dynamic stresses transferred to structural elements The aim is to reduce it. One of the aims of the invention is to investigate the natural vibration characteristics of the suspension cable. Increasing the dynamic stability of the system by reducing potential resonance effects, vibration to reduce their amplitudes, limit fatigue-induced damage, and bridge The aim is to extend the service life of the support system. The invention also includes any electrical energy, sensor, electronic control unit, actuator. or with a completely passive mechanical operating principle without requiring an external power supply 15 a highly reliable and low-maintenance vibration damping system. It aims to improve the business by eliminating energy consumption. The aim is to reduce costs and increase system continuity. Another purpose of the invention is to allow for the use of different diameters, lengths, and carrying capacities thanks to its modular structure. Easily adaptable to bridge suspension cables with a capacity of 20, the newly constructed 20 structural modifications that can be used directly on bridges and added to existing bridge systems. a vibration damping device that can be retrofitted without requiring it It is about developing. Finally, the invention deals with multi-axial dynamic vibrations occurring in bridge suspension systems. ensuring that it is brought under control, increasing structural reliability, maintenance 25 An innovative product that reduces the need for a long-lasting, compact, modular, and highly durable solution. The aim is to develop a passive mechanical vibration damping system. Explanation of the Figures Figure 1: Multiaxial bridge suspension cable vibration damping device of the invention, bridge General perspective view mounted on a suspension cable. 30 Figure 2: Multiaxial bridge suspension cable vibration damping device of the invention; multi-axial axial motion carrier platform, elastic suspension system, dynamic load balancing The module shows the viscous damping system and vibration redirection mechanisms. Cross-sectional view. Figure 3: The multi-axis bridge suspension cable vibration damping device of the invention; wind The different directions in which the generated dynamic vibrations are encountered, the vibration energy Operating position 5 showing the direction, distribution and passive damping. appearance. References: 1. Bridge suspension cable 2. Shock absorber carrier clamp body 3. Upper clamp half 10 4. Lower clamp half 5. Clamp tightening bolts 6. Clamp connection nuts 7. Inner gripping surface 8. Elastomer interlayer coating 15 9. Main carrier body 10. Multi-axis motion carrier platform 11. First elastic spring group 12. Second elastic spring group 13. Cross-balancing spring 20 14. Spring carrier housing 15. Spring preload adjustment mechanism 16. Motion transmission arm 17. Joint connection 18. Dynamic oscillation balancing arm 25 19. Viscous damping chamber 20. Viscous fluid reservoir 21. Flow control channel 22. Adjustable flow restrictor element 23. Pressure equalization piston 30 24. Piston return spring 25. Dynamic load balancing module 26. Lateral vibration redirection block 6 27. Longitudinal vibration guide block 28. Vertical vibration deflection block 29. Multi-axis guide bearing 30. Motion limiter / stopper 31. Modular connection plate 5 32. Bridge connection adapter 33. Protective outer casing 34. Sealing element 35. Service access hatch 36. Vibration energy distribution and balancing plate 10 Description of the Invention: The invention describes multiaxial vibrations caused by wind-induced dynamic vibrations in suspension cables. oscillations are not caused by any external energy source, electronic control system or active drive. to reduce using entirely passive mechanical principles without employing any mechanism This relates to an improved multi-axis bridge suspension cable vibration damping system. 15 The vibration damping device developed within the scope of the invention is mounted on the bridge suspension cable (1). fixed shock absorber carrier clamp body (2), upper clamp half (3), lower clamp half (4), clamp tightening bolts (5), clamp connecting nuts (6), inner gripping surface (7) and is securely attached to the suspension cable via elastomer interlayer (8). Thanks to this connection structure, the load-bearing capacity of the suspension cable is maintained while vibration is reduced by 20. the damping mechanism operates in a controlled and stable manner on the rope is provided. Shock absorber carrier clamp housing (2), main carrier of the vibration damping system. It is the element and assembly of all mechanical subsystems together with the carrier main body (9). It forms a rigid load-bearing structure that performs the function. 25 on the main load-bearing body (9) positioned multi-axis motion carrier platform (10), occurring in the suspension cable The dynamic movements in the lateral, longitudinal and vertical directions are independent of each other. It forms the basic mechanical component that can move in a way that can accommodate this. Thus, vibration loads from different directions are controlled without strain on a single axis. It is transferred to the system in this way. 30 Multi-axis motion carrier platform (10), first elastic spring group (11), second elastic It is elastically supported by a spring group (12) and a cross-balancing spring (13). Spring groups are not only used to store vibrational energy, but also for different purposes. 7 to ensure controlled balancing of dynamic loads coming from different directions They work in coordination with each other. The spring carrier housing (14) is the axial position of the springs. While ensuring stable operation in the direction, the spring preload adjustment mechanism (15) is different Adjusting system rigidity according to rope diameters, bridge types and operating conditions This allows the system to generate 5 different wind characteristics under varying wind conditions. It is able to adapt more effectively to vibration frequencies. The transmission of vibration loads onto the platform is via the motion transmission arm (16) and the joint. It is carried out via the connection (17). The movement transmission arm (16) is on the suspension rope. while transferring the resulting mechanical oscillations to the multi-axis motion carrier platform (10), The joint connection (17) reduces the stresses that may occur depending on the direction of movement of the system 10 It enables its components to move freely. Dynamic oscillation balancing. The arm (18) ensures that the vibration loads generated in different directions are balanced within the system. By ensuring that the stress is distributed in this way, it reduces local stress concentrations and vibrations. It prevents the concentration of energy on a single mechanical element. After the vibration energy is initially absorbed by the elastic system, 15 Mechanical movements occurring within the system are placed inside the viscous damping chamber (19). The viscous fluid inside the viscous damping chamber (19) is transferred. working together with its reservoir (20), mechanical vibration energy is converted through fluid friction. It enables the conversion of heat energy. Thus, in elastic spring systems... The stored kinetic energy is dissipated in a controlled manner and returned to the suspension cable. The residual vibrational energy that can be transferred is significantly reduced. Circulation of the viscous fluid within the system is via the flow control channel (21). It is implemented. Flow control channel (21) controls the viscous fluid at different pressures. by enabling it to move at controlled speeds at these levels, the damping characteristic This prevents it from being negatively affected by sudden load changes. Channel geometry 25 Thanks to this, it is more sensitive to low-amplitude vibrations and more efficient to high-amplitude vibrations. A progressive damping behavior is obtained, creating high resistance. The adjustable flow restrictor element (22) is located on the flow control channel (21), It is designed to change the cross-section of the viscous fluid. Thus, different Depending on bridge types, suspension cable diameters, wind characteristics, and operating conditions, the system can be 30 The damping coefficient can be adjusted mechanically. Thanks to this feature, the same The vibration damping system is a modular design that can be used in different carrier systems. It takes shape. 8 Pressure changes occurring in a viscous fluid are compensated by a pressure equalization piston. (23) is met by the pressure balancing piston (23), sudden load increases absorbs excessive pressure increases that may occur within the viscous fluid during the process. This prevents excessive stress on the system components. It operates in conjunction with a piston. The piston return spring (24) returns the piston to its initial position 5 after the load is removed. By ensuring controlled rotation, the viscous damping system continuously... It helps keep the person ready for work. There is a mechanical connection between the elastic suspension system and the viscous damping system. The dynamic load balancing module (25) which provides coordination is the basis of the invention. It constitutes one of its innovations. The dynamic load balancing module (25) has 10 different Instead of collecting vibration loads from different directions at a single point, they are collected within the system. It distributes vibration energy in a controlled manner among various mechanical components. This ensures that the distribution is balanced. Thus, there is no overemphasis on any single component. Stress generation is prevented, fatigue loads are reduced, and the system's service life is extended. It is extended significantly. 15 Dynamic load balancing module (25) is a passive module that only performs load distribution. not a carrier element, multi-axis motion carrier platform (10), first elastic spring group (11), second elastic spring group (12), cross balancing spring (13), viscous damping chamber (19), viscous fluid reservoir (20), flow control channel (21), adjustable flow restrictor element (22), pressure balancing piston (23) and piston return spring (24) between 20 a non-active but dynamically functioning entity that provides continuous mechanical interaction It acts as a balancing mechanism. This allows the system to function at different frequencies. It is able to adapt to incoming vibrations within its own mechanical characteristics. Controlled redirection of vibrational movements within the system. lateral vibration steering block (26), longitudinal vibration steering block (27) 25 and the vertical vibration steering block (28) work together. This steering blocks, complex three-dimensional vibration components generated in the suspension cable, related motion by separating into directions, the multi-axis motion carrier platform (10) is controlled. It transmits vibrations in different directions, thus negatively affecting each other. This prevents interference and ensures that each vibration component is damped according to its own damping characteristics. It is processed via a mechanical method. Multi-axis guide bearing (29) located in the center of the vibration guiding blocks, By enabling the moving system elements to operate with low friction, the mechanical system... 9 It reduces losses. The multi-axis guide bearing (29) also reduces platform losses. by ensuring that movements occur within defined axes, unwanted It prevents the occurrence of torsional movements. Thus, the vibrational energy is converted into mechanical energy. It is possible to transmit the data in a controlled manner within the system. The motion limiter stopper (30) occurs when the normal operating limits are exceeded. the maximum permissible movement distance of the platform in case of excessive vibrations This determines how excessive wind loads, sudden impact loads, or unexpected events occur. Mechanical damage to system components under dynamic stresses is prevented. The motion limiter stopper (30) does not engage during normal operation. It serves solely as a restrictive element for security purposes. 10 The vibration damping system must be securely connected to the bridge support system. carrier main body (9), modular connection plate (31) and bridge connection adapter for this purpose It works together with (32). The modular connection plate (31) accommodates different suspension rope diameters. connection points suitable for different clamp structures and various bridge geometries It enables the creation of a bridge connection adapter (32). The connection is 15 by compensating for the geometric differences between the surfaces, the system's existing bridge assembled in structures without requiring additional welding, cutting or structural changes. This makes it possible to do so. Thus, the invention is not only used in newly constructed bridges. No, it's a modular vibration system that can be subsequently applied to bridges already in use. It acquires the characteristics of a damping system. 20 To prevent the vibration damping mechanism from being affected by external environmental conditions. For this purpose, the moving components of the system are placed inside a protective outer housing (33). It is positioned. Protective outer casing (33) protects against rain, snow, ice, and sun. radiation, dust, salt water vapor, and similar environmental effects directly affect mechanical components. by preventing it from reaching the system components, thus preventing corrosion and ensuring operation. It prevents the deterioration of its characteristics. At the same time, the outer casing is movable. It enhances mechanical safety by preventing parts from being damaged by impact. Sealing between the protective outer housing (33) and the moving mechanical system, This is achieved via the sealing element (34). The sealing element (34) is viscous It prevents the fluid from leaking to the outside environment, as well as protecting against moisture, dirt, dust, and other external factors. It also prevents foreign particles from entering the system. Thus, the viscous The damping system's operating characteristics are maintained for a long time, and maintenance intervals are shortened. It is getting significantly longer. The service access hatch (35) located on the protective outer housing (33) of the system Periodic maintenance, inspection and adjustment procedures are carried out without disassembly. It enables the realization of the spring preload thanks to the service access cover (35). adjustment mechanism (15), adjustable flow restrictor element (22) and other maintenance-required Mechanical components are easily accessible. This reduces maintenance time by 5 It reduces operating costs and system downtime. It reduces it to a minimum level. Vibration energy distribution and balancing plate (36), dynamic load balancing module (25) By working together, the vibration energy transferred from the suspension cable to the system is converted into a specific amount. It prevents the concentration of energy in the area. Vibration energy distribution and balancing plate 10 (36), dynamic loads from different directions to the multi-axis motion carrier platform (10), first elastic spring group (11), second elastic spring group (12), cross balancing spring (13), viscous damping chamber (19), viscous fluid reservoir (20), flow control channel (21), adjustable flow restrictor element (22), pressure equalization piston (23) and piston return by distributing the viscous damping system formed by the spring (24) in an even manner, the system 15 It enables load sharing among the elements. Thus, local stress their concentrations are reduced, mechanical fatigue is delayed, and the system components are... The service life is increased. The general working principle of the invention is based on the dynamics generated on the bridge suspension cable (1). The movements are very 20 through the shock absorber carrier clamp body (2) and carrier main body (9). The axial motion is transferred to the carrier platform (10). The vibration components are lateral, It is oriented according to the longitudinal and vertical directions; initially by groups of elastic springs. The kinetic energy met in the stage is transmitted through the dynamic load balancing module (25) The viscous damping is transmitted to the damping system. Thus, the multi-directional damping energy obtained from the suspension cable is transferred. Vibration loads are passed through successive mechanical stages in a gradual and controlled manner. 25 is being reduced. Vibration energy generated within the system is transferred directly between mechanical elements. and the transfer is not abrupt, but controlled through successive mechanical stages. It is managed by the dynamic loads from the suspension cable, lateral vibration guide block. via longitudinal vibration guide block and vertical vibration guide block 30 They are guided according to the directions of movement and to the multi-axis motion carrier platform. The directed vibration loads are transferred to the elastic suspension system in the first stage. is met by, then the system via the dynamic load balancing module. 11 It is distributed among its components and in the final stage a viscous damping system. By causing energy loss, the vibration amplitude is gradually reduced. Thus, sequential energy management is implemented instead of a single-stage damping, Sudden loads on mechanical components are reduced, and the system is kept low-volume. stable in both high-amplitude continuous vibrations and high-amplitude sudden dynamic movements. The operating characteristics are maintained. The invention's most important technical advantage is that it can only be used in a specific way, unlike existing systems. single-function damping operating in a specific direction or at a particular resonance frequency Instead of mechanisms that detect, direct, balance, and distribute vibrational energy, a multi-stage, fully passive mechanical operating architecture with viscous damping 10 This architecture allows for the creation of variable conditions under different wind characteristics. No electronic control system is needed for high-frequency and multi-axis vibrations. A continuously operating adaptive damping behavior is achieved without being detected. The invention also allows for different suspension rope diameters thanks to its modular connection structure. Its applicability to different bridge types thanks to its adjustable mechanical parameters. adaptability, low maintenance requirements, no external energy consumption, It does not contain electronic components, provides a long service life, and is compatible with existing bridge systems. The technique is known for its ability to be integrated without requiring structural changes. It differs from the situation in that the invention addresses wind-induced problems in bridge suspension cables. Reliable, long-lasting, energy-efficient 20 for controlling dynamic vibrations. An independent, multi-axial, and highly efficient passive mechanical vibration damping solution. It offers. The multi-axis motion carrier platform (10) used in the invention, dynamic oscillation balancing arm (18), dynamic load balancing module (25) and vibration energy distribution and Working together, the balancing plate (36) reduces the vibration amplitude, unlike the classic 25 Unlike dampers, vibration loads are redistributed within the system. This structure ensures the distribution of sudden load changes on the suspension cable. It is distributed in a controlled manner throughout the mechanical system, in specific elements. Potential excessive stresses are reduced, and fatigue life is increased. One of the key innovations of the invention is that, thanks to the system's natural mechanical characteristics, 30 passively adapting to vibrations occurring in different frequency ranges It is the ability to provide this. As a result of changes in wind speed, direction or environmental conditions. Even if the vibration characteristic changes, the first elastic spring group (11), the second elastic spring group 12 (12), cross balance spring (13), motion transmission arm (16), joint connection (17), viscous damping chamber (19), viscous fluid reservoir (20), flow control channel (21), adjustable flow restrictor element (22), pressure equalization piston (23) and piston return due to the mechanical interaction between the spring (24) and the dynamic load balancing module (25) The system operates on its own without needing any electronic control algorithm. 5 It is able to maintain its characteristic. Thus, it operates only at a single resonance frequency. A wider operating range is achieved compared to classic passive dampers. Within the scope of this invention, vibration loads are not only damped but also laterally reduced. vibration guide block (26), longitudinal vibration guide block (27) and vertical The vibration is directed to the appropriate mechanical paths via the vibration steering block (28). 10 Thanks to this approach, vibrations occurring on different axes negatively affect each other. This prevents interference, reduces mechanical collisions, and allows system components to function more efficiently. Balanced operation is ensured. The multi-axis guide bearing (29) ensures the movements. Vibration redirection by ensuring it occurs within predefined limits. It increases the accuracy of the mechanism. 15 The elastomer interlayer (8) used in the invention protects the suspension rope from mechanical wear. It not only protects against but also the first high-frequency micro-vibrations. by contributing to the filtering of the main damping system in stages, it provides a more balanced system. It helps in loading. Thus, high with low-amplitude continuous vibrations. Sudden dynamic loads with amplitudes can be managed through different mechanical methods. 20 Spring preload adjustment mechanism (15) and adjustable flow restrictor element (22) together The mechanical characteristics of the system are evaluated according to different bridge types and different suspension cables. They can be optimized according to their diameters and different environmental conditions. This situation makes the invention... strengthening its modular structure and allowing for very different engineering applications of the same basic design. This enables its use in applications. 25 Because the invention operates entirely on passive mechanical principles, it utilizes electrical energy, sensors, It does not require software, an electronic control unit, or an actuator. Therefore, it saves energy. unaffected by power outages, with no risk of electronic failure, and low maintenance requirements. Reliable vibration damping with a long service life and reduced operating costs. The system is obtained. 30 The preferred application of the invention is a vibration damping device for suspension bridge suspension. The shock absorber carrier clamp body (2) is fixed onto the rope (1). However, the invention is not limited to this and also applies to cable systems used in cable-stayed bridges, 13 pedestrian bridges, cable-supported tower structures, power transmission line carrier cables, and The same operating principle applies in engineering structures that use similar tensile elements. It can be implemented while being protected. In an application example, the multi-axis motion carrier platform (10) has three freedoms. It is constructed as a hinged structure with a certain degree. In another application, it is 5. platform, elastomer joints, ball joints, flexible connections or low friction This can be achieved using linear slide systems. Thus, vibrations are reduced. The orientation characteristics can be changed according to the intended use. In another application example, groups of elastic springs (11, 12, 13) are made from helical steel springs. are produced. However, disc springs, leaf springs, torsion springs, composite 10 Elastic elements or elastomer-based elastic elements will also provide the same technical effect. They can be used in this way. By selecting different stiffness coefficients for the springs, specific methods can be employed. More effective damping of vibration frequencies can be achieved. In terms of viscous damping systems, silicone is used as the viscous fluid in one application. A high-viscosity fluid based on a synthetic base is used. In alternative applications, synthetic 15 oils, glycol-based fluids, or special high-temperature resistant damping Fluids can be selected. Similarly, the flow control channel (21) and adjustable flow restrictor element (22), flow regulators with different channel geometries or variable cross-sections It can be created with. Dynamic load balancing module (25), mechanical connecting arms 20 in preferred application. It operates through cam mechanisms, eccentric linkages, oscillation balancing plates, elastic coupling systems, or differential load distribution. It is possible to achieve the same technical result by using these mechanisms. In terms of vibration steering system, the lateral vibration steering block (26) is longitudinal. Vibration guide block (27) and vertical vibration guide block (28) are separate elements 25 It can be constructed as a single-piece multi-axis steering body. It can also be manufactured as an integrated unit. This reduces the production method and cost. Different designs can be created according to the criteria. Protective outer casing (33), metal, stainless steel, aluminum alloys, composite They can be produced from materials or high-strength polymer materials. Similar 30 The sealing element (34) can be elastomer, silicone, depending on the environment of use. They can be made from fluororubber or similar sealing materials. 14 Vibration energy distribution and balancing plate (36), in the form of a single piece rigid structure. It can be produced as a multi-part, composite or flexible modular structure. It can also be designed to accommodate different load distributions and different suspension cables. Mechanical behavior consistent with its characteristics can be obtained. Spring preload adjustment mechanism (15) and adjustable flow 5 in different applications of the invention The throttling element (22) can be adjusted manually or replaced during maintenance. also by using modular cartridges or interchangeable mechanical elements of varying hardness The operating characteristics of the system can be optimized. The invention is not limited to the application examples described herein, but also includes those defined in the claims. Provided they remain within the scope of protection, they can be made in different sizes, different materials, and in 10 different styles. It can be applied in connection geometries and with different mechanical arrangements. The invention Its basis is the multi-axial redirection and balancing of vibrational energy. It is formed by its distribution and viscous damping through passive mechanical principles. Equivalent mechanical arrangements can also be made, provided that this basic principle is preserved. It is considered within the scope of the invention. 15 The multi-axis bridge suspension cable vibration damping device developed within the scope of the invention, Unlike classic passive dampers that only dampen vibrations in the suspension cable as a system that detects, directs, balances, and distributes vibrational energy in a controlled manner. It forms an integrated mechanical system that dampes in a viscous manner. Thus Vibration energy is not concentrated on a single mechanical element; it is distributed among the 20 components of the system. By distributing it in a controlled manner throughout, a more stable work behavior is achieved. is being done. Multi-axis motion carrier platform (10), first elastic spring group (11), second elastic spring group (12), cross balance spring (13), dynamic swing balance arm (18), dynamic load balancing module (25) and vibration energy distribution and balancing plate 25 (36) working together, vibrations occurring in different directions are the same mechanical system It enables simultaneous management within the system. Thus, not only a specific one Unlike classical damping systems that operate in this direction, three-dimensional dynamics The movements are controlled within a single mechanical architecture. The spring preload adjustment mechanism (15) and the adjustable flow restrictor element (22) are 30° apart. The elastic rigidity characteristic of the system can be adjusted independently or together. The viscous damping characteristic can be determined separately. The spring preload value... modification, against vibration loads of the multi-axis motion carrier platform By regulating the elastic response it exhibits, changing the flow cross-section of the viscous fluid It changes the resistance of motion and, consequently, the damping coefficient. Thus, the system It is not only adapted to different bridges in general, but also to a specific suspension cable. Elastic response and viscous energy loss are separate mechanical parameters according to their dynamic behavior. It can be optimized via 5. The invention works on the principle that the device is used on a suspension cable of a suspension bridge. This is explained below through an example application. The application described relates to the invention. It aims to understand the sequence of operation and the interaction between mechanical components. The invention does not limit its application solely to the type of bridge in question. The bridge suspension cable (1) on the suspension bridge is aerodynamic under the effect of wind 10 dynamic vibrations in different directions along the rope when subjected to forces These vibrations occur due to changes in wind speed, flow direction, and eddies. vortex shedding, Aeolian vibrations, wake galloping, rain-wind Constantly changing frequency due to interactions and similar environmental effects. It can occur in amplitudes of 15. Dynamic movements occurring on the suspension rope (1), mechanical contact with the rope The shock absorber carrier clamp is transferred directly to the housing (2) of the shock absorber carrier. Clamp half (3) and lower clamp half (4), clamp connection with clamp tightening bolts (5) It securely grips the suspension rope with the help of nuts (6). Inner gripping surface (7) and elastomer interlayer (8), the clamping force is distributed homogeneously around the rope 20 By ensuring its distribution, it both prevents damage to the rope surface and provides high... It contributes to the initial filtering of high-frequency micro-vibrations. The rope motion is transmitted to the carrier main body (9) and from there to the multi-axis motion carrier It is transferred to the platform (10). The platform is only in one direction of the suspension rope. not only the movement, but also the lateral, longitudinal and vertical vibrations that can occur simultaneously. 25 It can move freely in a way that can withstand vibration loads. It is transferred to the mechanical system without being locked in any direction. Dynamic loads transmitted to the platform are transmitted by the first elastic spring group (11), the second elastic spring These spring groups are met by (12) and cross-balancing spring (13). Instead of suddenly stopping all the vibrational energy, it stores it in a controlled manner, thus preventing a sudden 30... It reduces impact loads. The spring carrier housing (14) carries the springs in the axial direction. While ensuring its smooth operation, different suspensions thanks to the spring preload adjustment mechanism (15). Mechanical adjustments can be made to suit the stiffness of the cables and different bridge spans. 16 The movement stored in the elastic system is transmitted to the joint via the movement transmission arm (16). The connection (17) is transferred to the joint. The joint (17) transfers mechanical signals from different directions. Dynamic oscillation balancing arm allows for the free transmission of movements. (18) distributes the vibration loads evenly within the system and at certain points. It prevents excessive stress from occurring. 5 At this stage, mechanical energy reaches the viscous damping chamber (19). Viscous The high viscosity fluid in the fluid reservoir (20) flow control channel (21) moves in a controlled manner along the adjustable flow restrictor element (22). By limiting the flow rate, mechanical energy is converted into heat energy through fluid friction. It enables conversion. The pressure balancing piston (23) 10 in sudden load increases. The piston return spring (24) counteracts the pressure changes that occur, and the load is removed. after startup, the system should return to its initial operating state in a controlled manner. It provides. Coordination between elastic and viscous systems: dynamic load balancing modulus. (25) is performed by. Dynamic load balancing module, vibration 15 by preventing the concentration of energy on a single component, it distributes mechanical loads across the system. It is distributed evenly across the board. This reduces mechanical fatigue and... The service life of system components is extended. Simultaneously, lateral vibration steering block (26), longitudinal vibration steering block (27) and vertical vibration guide block (28), 20 vibration components in the directions in which they occur It differentiates according to the multi-axis guide bearing (29), these movements with low friction. while enabling it to happen, the movement limiting stopper (30) extraordinary wind It prevents the system from exceeding its permitted movement limits under load. All vibration loads are handled by the modular connection plate (31), bridge connection adapter (32) and vibration energy distribution and balancing plate (36) within the system 25 They are distributed evenly. Thus, the loads are concentrated at a single connection point. Concentration of loads is prevented, and all mechanical elements carry the load equally. Protective outer housing (33), sealing element (34) and service access cover (35) Thanks to this, the mechanical system is protected from external environmental conditions, and maintenance operations are carried out. This facilitates and ensures the long-term stable operation of the viscous damping system. 30 is provided. Consequently, the vibration energy generated in the suspension cable by the effect of wind is transferred to the mechanical connection. It is transferred to the mechanism via, directed in a multi-axial manner, and is elastic. 17 This is handled by the suspension system, dynamic load balancing module. The damping is distributed among the system components via a viscous damping system. It is damped by the system and distributed in a controlled manner throughout the system. Thus The vibration amplitudes occurring in the suspension cable are reduced, thus minimizing the possibility of resonance. This reduces fatigue damage, limits fatigue, and extends the service life of the bridge support system to 5 years. is being increased. Industrial Application of the Invention: The multi-axis bridge suspension cable vibration damping device developed within the scope of the invention, Metalworking, casting, forging, machining, and CNC are widely used today. Mass production using machining, welding, surface treatment and mechanical assembly techniques 10 It can be manufactured appropriately. Thanks to its modular structure, the mechanism can be used with different bridges. It is designed to be adaptable to different types and geometries of suspension ropes. During the production phase, the carrier body, connecting elements and protective casing are of high quality. steel, stainless steel, aluminum alloys or composites that provide mechanical strength It can be manufactured from essential engineering materials. The material to be used is; 15 The bridge's service life depends on the environmental conditions it will be exposed to, the risk of corrosion, and transportation. This can be determined by taking capacity into consideration. Mechanical damage to the rope at the gripping surfaces that come into contact with the suspension rope. elastomer or similar material that prevents and helps to reduce vibrations in the initial stages. Flexible engineering materials can be used. This ensures both a safe mechanical system. a connection is established and wear and deformations that may occur on the rope surface are prevented. is being reduced. The multi-axis motion system and elastic suspension elements included within the mechanism, motion transmission mechanisms and dynamic load balancing components with precise tolerances. 25 Suitable surfaces are being installed to increase the wear resistance of moving parts. Hardening or protective coating processes can be applied. Metal surfaces in contact with the external environment depend on the environmental conditions of the usage area. such as galvanizing, cataphoresis coating, electrostatic painting, nickel-based coating, Passivation or similar corrosion-preventive surface treatments can be applied. Repeated 30 motion transmission elements, joint connections, springs subjected to dynamic loads bearings and connection areas fatigue resistance is taken into consideration It can be sized; crack, deformation, leakage and mechanical problems after production. 18 It can be subjected to motion controls. Thus, the device can be used in open environment conditions and It can be adapted to operate for extended periods under repeated wind loads. The viscous damping system is manufactured to operate within a leak-proof chamber. and a damping fluid with a suitable viscosity value for the system. is filled. Thanks to the flow resistance created during the controlled circulation of the fluid, 5 Mechanical vibration energy is converted into heat energy through fluid friction. The heat generated is dissipated, and the heat is transferred to the environment through the system components. This ensures stable damping performance over a long period. During assembly, the device is first secured onto the bridge suspension cable. It is fixed in place, then a multi-axis motion mechanism, an elastic suspension system, 10 dynamic load balancing mechanism and viscous damping system on the main body It is installed. Afterwards, the necessary mechanical adjustments are made and the system is installed where it will be used. suitable for the bridge's suspension cable specifications and expected dynamic load characteristics working conditions are being changed. The mechanism ensures that the entire system is detached from the suspension cable during maintenance and parts replacement. 15 It can be designed in a way that allows it to be served without requiring any additional materials. Elastic. suspension elements, viscous damping components, sealing elements and adjustment The mechanisms can be prepared as independent sub-assembly groups and If necessary, it is only possible to replace the relevant sub-assembly group. Thanks to this structure, maintenance time is shortened and downtime in bridge operation is reduced. and instead of replacing the entire system, only the worn or malfunctioning parts are replaced. The replacement of components is ensured. Once the protective enclosure is closed, the system cannot be connected to any external power source. It is commissioned in such a way that it can operate continuously without needing any additional support. Usage Wind-induced dynamic movements occurring in the suspension cable during mechanical connection 25 The motion is transferred to a multi-axis motion system via its structure and elastic suspension, The combined operation of dynamic load balancing and viscous damping mechanisms. Thanks to this, it is reduced in a controlled manner. The invention relates to suspension bridges, inclined cable-stayed bridges, pedestrian bridges, and cable-supported transport bridges. It can be applied directly in systems and similar engineering structures, as well as in the existing 30 They can also be retrofitted to improve the structural performance of bridges. Thanks to its modular structure, it is compatible with different suspension cable diameters and different carrier systems. It is easily adaptable, thus offering a wide range of applications. 19 In conclusion, the invention can be economically produced using existing manufacturing technologies. manufacturable, suitable for mass production, requires no external power source, requires no maintenance. Low voltage, long service life and applicable in different engineering structures. Specifically, it is used in industry as a passive mechanical bridge suspension cable vibration damping system. It is applicable. 5
Claims
REQUESTS 1. Reducing wind-induced dynamic vibrations using passive mechanical methods. It is a multi-axis bridge suspension cable vibration damping system that provides; its feature is: A carrier main body (9) that works by being fixed on the bridge suspension cable (1), The subject is the lateral, longitudinal 5 that occurs in the suspension cable on the main carrier body (9). and capable of accommodating dynamic vibration movements in the vertical directions a movable multi-axis motion carrier platform (10), the said platform (10) an elastic suspension system working in mechanical interaction with, a viscous material that provides controlled damping of vibrational energy damping system, elastic suspension system and viscous damping system 10 dynamic load balancing that enables the distribution of vibration loads between them module (25) measures vibration movements in the lateral, longitudinal and vertical directions. a vibration steering mechanism that directs and directs vibration energy to the system a vibration energy that is distributed in a controlled manner among its components It includes distribution and balancing plate (36) and the components together 15 The study investigated multi-axial wind-induced vibrations in the bridge suspension cable. external power source, electronic control unit, sensor system or active drive by enabling passive damping without the use of a mechanism It is characterized by...
2. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. its feature is that the main carrier body (9) has shock absorber carriers on the bridge suspension cable (1). clamp body (2), upper clamp half (3), lower clamp half (4), clamp tightening bolts (5), clamp connection nuts (6), inner gripping surface (7) and elastomer It is characterized by its ability to be fixed by means of an intermediate coating (8). 25 3. According to Claim 1, the reduction of wind-induced dynamic vibrations by passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its feature is that it has an elastic suspension system and a multi-axis motion carrier platform. (11) the first elastic spring group working in mechanical interaction with (10), the second elastic spring group (12), cross balancing spring (13), spring carrier housing (14) and spring 30 It is characterized by having a preload adjustment mechanism (15).
4. According to Claim 3, the reduction of wind-induced dynamic vibrations by passive mechanical methods multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. its feature is the spring preload adjustment mechanism (15), elastic suspension system 21 mechanical rigidity according to different bridge suspension cable specifications and operating conditions It is characterized by the fact that it allows for adjustment.
5. According to Claim 1, the reduction of wind-induced dynamic vibrations by passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. and its feature is; multi-axis motion carrier platform (10), motion transmission arm 5 (16), via the joint link (17) and the dynamic swing balance arm (18) The vibration movements occurring in the bridge suspension cable (1) are transferred to the elastic suspension system. It is characterized by its transmission.
6. According to Claim 1, the reduction of wind-induced dynamic vibrations by passive mechanical methods... Multi-axis bridge suspension cable vibration damping system that enables reduction 10 and its feature is that the viscous damping system has a viscous damping chamber (19) and containing a viscous fluid reservoir (20) and the vibration energy of fluid friction It is characterized by its ability to provide damping through this process.
7. According to Claim 6, dynamic vibrations caused by wind can be measured using passive mechanical methods. Multi-axis bridge suspension cable vibration damping system that enables reduction 15 Its characteristic feature is the controlled circulation of viscous fluids in a viscous damping system. adjustable flow control channel (21) and adjustable flow that adjusts the flow cross-section It is characterized by containing a restricting element (22).
8. According to claim 6, the reduction of wind-induced dynamic vibrations by passive mechanical methods. Multi-axis bridge suspension cable vibration damping system that enables reduction 20 and its feature is the viscous damping system, pressure balancing piston (23) and the piston contains a return spring (24) and occurs in the viscous fluid by balancing pressure variations, ensuring the continuity of damping characteristics. It is characterized by its ability to provide.
9. According to Claim 1, the reduction of wind-induced dynamic vibrations by passive mechanical methods 25 multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. its feature is the dynamic load balancing module (25), elastic suspension system controlled distribution of vibration loads between the viscous damping system It is characterized by its ability to facilitate transfer and balance.
10. According to Claim 1, the reduction of wind-induced dynamic vibrations by passive mechanical methods is 30 multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its characteristic feature is that the vibration steering mechanism is lateral vibration steering. block (26), longitudinal vibration guiding block (27), vertical vibration including the guide block (28) and the multi-axis guide bearing (29) and vibration 22 characterized by directing its movements along the relevant directions of movement. is being done.
11. According to Claim 1, wind-induced dynamic vibrations can be measured using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its characteristic feature is that the movements generated by the vibration steering mechanism are 5 a movement restrictor that ensures the movement is kept within the defined working limits (30) is characterized by its inclusion.
12. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its feature is that the carrier main body (9) and other system components are detachable. 10 modular connection flange (31) which enables mechanical connection in this way It is characterized by its inclusion.
13. According to claim 12, wind-induced dynamic vibrations can be measured using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. and its feature is; modular connection flange (31), connection fixing elements (32) 15 enabling the assembly and, if necessary, disassembly of system components. It is characterized by...
14. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its feature is a protective outer casing that protects system components from external environmental influences. It is characterized by containing the enclosure (33).
15. According to claim 14, wind-induced dynamic vibrations can be measured using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. its feature is; maintenance and inspection procedures on the protective outer casing (33). 25 characterized by the presence of a service hatch (34) to provide access is being done.
16. According to claim 15, wind-induced dynamic vibrations can be measured using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its feature is that the service cover (34) is securely closed after maintenance. 30 characterized by having a locking mechanism (35) that ensures it is held in place. is being done.
17. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. Its feature is; vibration energy distribution and balancing plate (36), elastic 23 suspension system, viscous damping system and dynamic load balancing module (25) controlled and balanced distribution of vibration loads between It is characterized by its ability to provide.
18. According to claim 17, wind-induced dynamic vibrations can be measured using passive mechanical methods. Multi-axis bridge suspension cable vibration damping system that enables reduction 5 and its feature is the vibration energy distribution and balancing plate (36), different By combining vibration loads from different directions, the system provides controlled loads to the system components. It is characterized by its transmission in this manner.
19. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. Multi-axis bridge suspension cable vibration damping system that enables reduction 10 Its features include: elastic suspension system, viscous damping system, dynamic load. balancing module (25), vibration steering mechanism and vibration energy mechanical force transfer between distribution and balancing plate (36) This ensures that vibrations are produced passively without the use of an external energy source. It is characterized by its ability to provide damping. 15 20. According to Claim 1, wind-induced dynamic vibrations can be neutralized using passive mechanical methods. multi-axis bridge suspension cable vibration damping system that enables reduction of vibration. its feature is the multi-axis vibrations that occur in the bridge suspension cable (1) of the system. elastic suspension system, viscous damping system, dynamic load equalization module (25), vibration steering mechanism and vibration energy distribution and 20 together with the balancing plate (36) to passively dampen. It is characterized by its work.