Carbon fiber rope net damping device for cable-stayed-suspension cable cooperative system bridge cable structure

Abstract

The utility model relates to the technical field of bridge vibration reduction, and discloses a carbon fiber rope net vibration reduction device for a cable-stayed-suspended cable cooperative system bridge cable structure. Comprising vertical reinforced carbon fiber ropes, longitudinal reinforced carbon fiber ropes, common carbon fiber ropes, connection nodes between the reinforced carbon fiber ropes, connection nodes between the reinforced carbon fiber ropes and the common carbon fiber ropes and connection nodes between the common carbon fiber ropes. The reinforced carbon fiber rope and the common carbon fiber rope are fixedly connected through the first type of reinforced carbon fiber rope and common carbon fiber rope connecting node and the second type of reinforced carbon fiber rope and common carbon fiber rope connecting node; the common carbon fiber ropes are connected through the connection nodes between the common carbon fiber ropes; the carbon fiber rope net is fixedly connected with the stay cables or the slings through cable clamps. The vibration of the cable structure is effectively restrained or weakened by improving the overall rigidity of the stay cable or the sling, and meanwhile the cable structure has the advantages of being small in influence of environmental factors, light in weight and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge vibration reduction, in particular to a carbon fiber rope net vibration reduction device for a bridge cable structure of a cable-stayed-cable cooperative system. Background Art

[0002] The cable-stayed-suspension bridge is a new type of combined bridge developed on the basis of traditional cable-stayed bridges and suspension bridges. Compared with traditional suspension bridges, it can effectively reduce the size of anchorage and improve structural rigidity; compared with traditional cable-stayed bridges, it avoids the appearance of excessively long cables, reduces the height of the cable tower and the axial pressure of the main beam.

[0003] The safety of cable-structured bridges is directly related to the structural safety. However, the flexible cable structure vibrates under the stimulation of environmental factors, which can easily lead to fatigue failure of the cable structure. Many cable-stayed bridges at home and abroad have had to be replaced due to cable failure. Suspension bridges also face the problem of cable structure failure caused by vibration.

[0004] The existing vibration reduction technology principles of the cable or sling can be divided into the following three categories. The first is to change the aerodynamic shape of the cable / sling to achieve vibration reduction; the second is to use second-order cables (steel strands, etc.) to connect the main cable or sling, increase the overall stiffness of the cable or sling, increase the modal mass and damping of the cable structure, and improve the mutual coupling between the modes of each order when the cable or sling vibrates; the third is to install a damper to dissipate energy through the damper to achieve vibration reduction.

[0005] However, all existing measures have shortcomings to varying degrees. Specifically, changing the aerodynamic shape of the cable structure will change the drag coefficient of the cable structure section, resulting in other unstable vibrations; the second-order cable method needs to be installed after the construction of the inclined cable or sling is completed, and the steel strands used in conventional second-order cables have a large deadweight, which poses a great safety risk in high-altitude operations; the damper installation method is easily affected by the damper's own quality and the ambient temperature and humidity, and the vibration reduction effect is difficult to achieve an ideal state.

[0006] In summary, the cables and hangers of cable-structured bridges are directly related to the safety of the bridges. However, the existing vibration reduction technologies for cables or hangers have certain limitations. Utility Model Content

[0007] The purpose of the utility model is to solve the problems of poor vibration reduction effect and short equipment life in the vibration reduction technology of cable-stayed cables or hangers in the prior art, and to propose a carbon fiber rope net vibration reduction device for a cable-stayed-cable cooperative system bridge cable structure. The device can not only exert excellent energy dissipation and vibration reduction effects, but also achieve rapid installation in actual engineering, and has a good vibration reduction effect on cable-stayed-cable cooperative system bridges.

[0008] To achieve the above object, the utility model adopts the following technical solutions:

[0009] A carbon fiber rope net vibration damping device for a cable-stayed - suspension cooperative system bridge cable structure, comprising a plurality of stay cables, a main cable, a plurality of suspension cables and a main beam. The plurality of stay cables and the main cable are respectively arranged above the main beam, and a carbon fiber rope net composed of vertical reinforcing carbon fiber ropes, longitudinal reinforcing carbon fiber ropes and ordinary carbon fiber ropes is arranged between two adjacent stay cables and suspension cables.

[0010] Furthermore, a reinforcing carbon fiber rope and a connection node between the stay cable or the suspension cable are fixedly connected simultaneously between the carbon fiber rope net composed of the vertical reinforcing carbon fiber ropes, the longitudinal reinforcing carbon fiber ropes and the ordinary carbon fiber ropes and the stay cable or the suspension cable.

[0011] Furthermore, a first type of reinforcing carbon fiber rope connection node and a second type of reinforcing carbon fiber rope connection node are fixedly connected simultaneously between the vertical reinforcing carbon fiber rope and the longitudinal reinforcing carbon fiber rope.

[0012] Furthermore, ordinary carbon fiber rope nodes are respectively arranged between the plurality of ordinary carbon fiber ropes.

[0013] Furthermore, a cable clip is sleeved simultaneously between the reinforcing carbon fiber rope and the connection node between the stay cable or the suspension cable, the stay cable and the suspension cable. A plurality of fastening screws are inserted into the interior of the cable clip, and fastening nuts are respectively threadedly connected to the rod walls of the plurality of fastening screws.

[0014] Furthermore, a clamp connecting plate is provided simultaneously at the connection positions of the first type of reinforcing carbon fiber rope connection node, the ordinary carbon fiber rope connection node, the vertical reinforcing carbon fiber rope and the longitudinal reinforcing carbon fiber rope. Fastening screws and fastening nuts are threadedly connected to the interior of the clamp connecting plate. A plurality of ordinary carbon fiber connection clamps are arranged around the edge of the clamp connecting plate, and fastening screws and fastening nuts are threadedly connected to the interior of the ordinary carbon fiber connection clamps.

[0015] Furthermore, a clamp rubber inner lining protection layer is attached to the inner wall of the ordinary carbon fiber connection clamp.

[0016] Furthermore, in the second type of reinforcing carbon fiber rope connection node, the vertical reinforcing carbon fiber rope or the longitudinal reinforcing carbon fiber rope and the ordinary carbon fiber rope are arranged vertically or horizontally, and a "U" - shaped rope buckle is sleeved at the connection position of the second type of reinforcing carbon fiber rope connection node and the vertical reinforcing carbon fiber rope or the longitudinal reinforcing carbon fiber rope. A fastening nut is threadedly connected to the interior of the "U" - shaped rope buckle.

[0017] Furthermore, a clamp rubber inner lining protection layer is attached to the inner wall of the "U" - shaped rope buckle.

[0018] Furthermore, the carbon fiber rope net composed of the vertical reinforcing carbon fiber ropes, longitudinal reinforcing carbon fiber ropes and ordinary carbon fiber ropes is slidably connected with the high-damping elastic rubber connecting rope buckle.

[0019] Compared with the prior art, the present utility model provides a carbon fiber rope net damping device for a cable structure of a cable-stayed and suspension cooperative system bridge, which has the following beneficial effects:

[0020] 1. For the carbon fiber rope net damping device for the cable structure of the cable-stayed and suspension cooperative system bridge, a carbon fiber rope net is formed by vertical reinforcing carbon fiber ropes, longitudinal reinforcing carbon fiber ropes and ordinary carbon fiber ropes. Different types of carbon fiber ropes among the rope nets are connected together through special connecting members, which has the characteristics of light weight and large tensile strength. The rope net is connected with the cable-stayed cable or the suspension cable through a cable clip, and the installation is convenient, which can greatly improve the working efficiency.

[0021] 2. For the carbon fiber rope net damping device for the cable structure of the cable-stayed and suspension cooperative system bridge, a net structure is formed by combining different types of carbon fiber ropes. After the cable-stayed cable or the suspension cable is stressed and undergoes deformations such as elongation, it causes interactions between the carbon fiber ropes connected to each other through the damping effect connecting fasteners, so as to achieve the purpose of energy dissipation and vibration reduction. At the same time, the carbon fiber rope net connects multiple cable-stayed cables or suspension cables into a whole, improves the overall stiffness of the cable-stayed cable or the suspension cable, and reduces the mutual coupling effect between various modes during the vibration of the cable structure.

[0022] 3. For the carbon fiber rope net damping device for the cable structure of the cable-stayed and suspension cooperative system bridge, the overall mass is light. Installing it on the cable-stayed cable or the suspension cable will not produce additional effects on the overall internal force distribution of the cable structure, and it is less affected by environmental factors and has a good damping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the overall layout schematic diagram of the carbon fiber rope net damping device for the cable-stayed and suspension cooperative system bridge in the embodiment of the present utility model;

[0024] Figure 2 is the connection schematic diagram of the reinforcing carbon fiber rope and the cable-stayed cable or the suspension cable in the embodiment of the present utility model;

[0025] Figure 3 is the connection schematic diagram of the connection node between the first type of reinforcing carbon fiber rope and the ordinary carbon fiber rope in the embodiment of the present utility model;

[0026] Figure 4 is the connection schematic diagram of the connection node between the second type of reinforcing carbon fiber rope and the ordinary carbon fiber rope in the embodiment of the present utility model;

[0027] Figure 5 is the connection schematic diagram between ordinary carbon fiber ropes in the embodiment of the present utility model;

[0028] Figure 6 This is the front view of the fixture connecting plate of the reinforced carbon fiber rope in the embodiment of the present utility model.

[0029] In the figure: 1. Stay cable; 2. Main cable; 3. Hanger; 4. Connection node of the reinforced carbon fiber rope and the stay cable or hanger; 5. Vertical reinforced carbon fiber rope; 6. Longitudinal reinforced carbon fiber rope; 7. Ordinary carbon fiber rope; 8. Connection node of the first type of reinforced carbon fiber rope and the ordinary carbon fiber rope; 9. Ordinary carbon fiber rope node; 10. Connection node of the second type of reinforced carbon fiber rope and the ordinary carbon fiber rope; 11. Main beam; 12. Sling clamp; 13. Tightening screw; 14. Fixture connecting plate; 15. Tightening nut; 16. Ordinary carbon fiber rope connecting fixture; 17. Fixture rubber lining protective layer; 18. High-damping elastic rubber connection buckle; 19. "U"-shaped rope buckle. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0031] Refer to Figure 1-6 , a carbon fiber rope net vibration damping device for a cable structure of a cable-stayed and suspension cooperative system bridge, including a plurality of stay cables 1, a main cable 2, a plurality of hangers 3 and a main beam 11. The plurality of stay cables 1 and the main cable 2 are respectively arranged above the main beam 11. A carbon fiber rope net composed of a vertical reinforced carbon fiber rope 5, a longitudinal reinforced carbon fiber rope 6 and an ordinary carbon fiber rope 7 is arranged between two adjacent stay cables 1 and hangers 3. A connection node 4 of the reinforced carbon fiber rope and the stay cable or hanger is fixedly connected between the carbon fiber rope net composed of the vertical reinforced carbon fiber rope 5, the longitudinal reinforced carbon fiber rope 6 and the ordinary carbon fiber rope 7 and the stay cable 1 or the hanger 3. A first type of reinforced carbon fiber rope connection node 8 and a second type of reinforced carbon fiber rope connection node 10 are fixedly connected between the vertical reinforced carbon fiber rope 5 and the longitudinal reinforced carbon fiber rope 6. Ordinary carbon fiber rope nodes 9 are respectively arranged among the plurality of ordinary carbon fiber ropes 7.

[0032] Refer to Figure 1-6, a cable clip 12 is sleeved between the reinforced carbon fiber rope and the connection node 4 of the stay cable or sling, the stay cable 1 and the sling 3. A plurality of fastening screws 13 are inserted inside the cable clip 12. Threaded nuts 15 are respectively threadedly connected to the rod walls of the plurality of fastening screws 13. At the connection of the first type of reinforced carbon fiber rope connection node and the ordinary carbon fiber rope connection node 8 with the vertical reinforced carbon fiber rope 5 and the longitudinal reinforced carbon fiber rope 6, a clamp connecting plate 14 is provided. Fastening screws 13 and fastening nuts 15 are threadedly connected inside the clamp connecting plate 14. A plurality of ordinary carbon fiber connection clamps 16 are arranged around the edge of the clamp connecting plate 14. Fastening screws 13 and fastening nuts 15 are threadedly connected inside the ordinary carbon fiber connection clamps 16. A clamp rubber lining protection layer 17 is attached to the inner wall of the ordinary carbon fiber connection clamps 16.

[0033] Referring to Figure 1-6 , in the second type of reinforced carbon fiber rope connection node 10, the vertical reinforced carbon fiber rope 5 or the longitudinal reinforced carbon fiber rope 6 and the ordinary carbon fiber rope are arranged up and down or left and right. And a "U" - shaped rope buckle 19 is sleeved at the connection of the second type of reinforced carbon fiber rope connection node 10 and the vertical reinforced carbon fiber rope 5 or the longitudinal reinforced carbon fiber rope 6. The inside of the "U" - shaped rope buckle 19 is threadedly connected with the fastening nut 15. A clamp rubber lining protection layer 17 is attached to the inner wall of the "U" - shaped rope buckle 19. The carbon fiber rope net formed by the vertical reinforced carbon fiber rope 5, the longitudinal reinforced carbon fiber rope 6 and the ordinary carbon fiber rope 7 is slidably connected with the high - damping elastic rubber connection rope buckle 18.

[0034] The working principle of the present utility model is as follows:

[0035] The vertical reinforced carbon fiber rope 5 and the longitudinal reinforced carbon fiber rope 6 are arranged cross - wise to form a reinforced skeleton of the carbon fiber rope net. The ordinary carbon fiber rope 7 is respectively connected to the vertical reinforced carbon fiber rope 5 and the longitudinal reinforced carbon fiber rope 6 through the first type of reinforced carbon fiber rope and ordinary carbon fiber rope connection node 8 and the second type of reinforced carbon fiber rope and ordinary carbon fiber rope connection node 10. The ordinary carbon fiber ropes 7 are connected by high - damping elastic rubber rope buckles 18 to form a carbon fiber rope net. The carbon fiber rope net is connected and fastened to the stay cable 1 or the sling 3 through the cable clip 12, the screw 13 and the fastening nut 14.

[0036] In each connection structure, the connections between the carbon fiber rope net and the stay cable 1 or the sling 3, the vertical reinforcing carbon fiber ropes 5, the longitudinal reinforcing carbon fibers 6, and the reinforcing carbon fiber ropes and the ordinary carbon fiber ropes 7 within the carbon fiber rope net are all fixed connections, while the connections between the ordinary carbon fiber ropes 7 are movable connections. On the one hand, the overall stiffness of the stay cable or the sling is improved by the carbon fiber rope net, and the mutual coupling effect between various modes during the vibration of the cable structure is reduced. On the other hand, the ordinary carbon fiber ropes 7 are connected by high-damping elastic rubber rope fasteners 18. When the cable structure vibrates and displaces, they can slide relative to each other to dissipate energy and reduce the vibration amplitude, thereby achieving the effect of shock absorption.

[0037] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A carbon fiber rope net vibration reduction device for a bridge cable structure of a cable-stayed-cable cooperative system, comprising a plurality of cable stays (1), a main cable (2), a plurality of suspension cables (3) and a main beam (11), characterized in that: A plurality of the inclined cables (1) and main cables (2) are respectively arranged above the main beam (11), and a carbon fiber rope net composed of vertically reinforced carbon fiber ropes (5), longitudinally reinforced carbon fiber ropes (6) and ordinary carbon fiber ropes (7) is arranged between two adjacent inclined cables (1) and suspension ropes (3).

2. A carbon fiber rope net vibration reduction device for a cable-stayed and cable-suspension cooperative system bridge cable structure as claimed in claim 1, characterized in that: A carbon fiber rope net composed of the vertical reinforcing carbon fiber ropes (5), the longitudinal reinforcing carbon fiber ropes (6) and the common carbon fiber ropes (7) is fixedly connected to the inclined cables (1) or the slings (3) by a reinforcing carbon fiber rope and inclined cables or sling connection node (4).

3. The carbon fiber rope net vibration reduction device of the cable-stayed-cable cooperative bridge cable structure according to claim 1, characterized in that: The vertical reinforcing carbon fiber rope (5) and the longitudinal reinforcing carbon fiber rope (6) are simultaneously fixedly connected with a first type of reinforcing carbon fiber rope connection node (8) and a second type of reinforcing carbon fiber rope connection node (10).

4. A carbon fiber rope net vibration reduction device for a cable-stayed and cable-suspended cooperative system bridge cable structure as claimed in claim 1, characterized in that: Ordinary carbon fiber rope nodes (9) are respectively arranged between the plurality of ordinary carbon fiber ropes (7).

5. A carbon fiber rope net vibration reduction device for a cable-stayed and cable-suspension cooperative system bridge cable structure as claimed in claim 2, characterized in that: A cable clamp (12) is simultaneously provided between the reinforced carbon fiber rope and the inclined cable or sling connection node (4), the inclined cable (1) and the sling (3), and a plurality of fastening screws (13) are inserted and arranged inside the cable clamp (12), and a plurality of fastening screws (13) are respectively threadedly connected to the rod walls of the plurality of fastening screws (13).

6. A carbon fiber rope net vibration reduction device for a bridge cable structure of a cable-stayed-cable cooperative system as claimed in claim 3, characterized in that: A clamp connecting plate (14) is provided at the connection point between the first type of reinforced carbon fiber rope connection node and the ordinary carbon fiber rope connection node (8) and the vertical reinforced carbon fiber rope (5) and the longitudinal reinforced carbon fiber rope (6). The internal thread of the clamp connecting plate (14) is connected to a fastening screw (13) and a fastening nut (15). A plurality of ordinary carbon fiber connecting clamps (16) are arranged around the edge of the clamp connecting plate (14). The internal thread of the ordinary carbon fiber connecting clamp (16) is connected to a fastening screw (13) and a fastening nut (15).

7. A carbon fiber rope net vibration reduction device for a cable-stayed and cable-suspended cooperative system bridge cable structure as claimed in claim 6, characterized in that: The inner wall of the common carbon fiber connection clamp (16) is provided with a clamp rubber lining protective layer (17).

8. The carbon fiber rope net vibration reduction device of the cable-stayed-cable cooperative bridge cable structure according to claim 3, characterized in that: The vertical reinforcing carbon fiber rope (5) or the longitudinal reinforcing carbon fiber rope (6) in the second type of reinforced carbon fiber rope connection node (10) is arranged above or below or left or right with the ordinary carbon fiber rope, and a "U"-shaped rope buckle (19) is provided at the connection between the second type of reinforced carbon fiber rope connection node (10) and the vertical reinforcing carbon fiber rope (5) or the longitudinal reinforcing carbon fiber rope (6), and the interior of the "U"-shaped rope buckle (19) is threadedly connected to the fastening nut (15).

9. A carbon fiber rope net vibration reduction device for a cable-stayed and cable-suspended cooperative system bridge cable structure as claimed in claim 8, characterized in that: The inner wall of the "U"-shaped rope buckle (19) is provided with a clamp rubber lining protective layer (17).

10. The carbon fiber rope net vibration reduction device of the cable-stayed-cable cooperative bridge cable structure according to claim 1, characterized in that: The carbon fiber rope net composed of the vertical reinforcing carbon fiber rope (5), the longitudinal reinforcing carbon fiber rope (6) and the common carbon fiber rope (7) is slidably connected to the high-damping elastic rubber connecting rope buckle (18).

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