Damping device of stay cable and cable-stayed bridge

Abstract

The utility model provides a damping device of a stay cable and a cable-stayed bridge, and relates to the technical field of cable-stayed bridges. The damping device of the stay cable comprises a damper and a turn buckle which are connected in series, the damping device of the stay cable is used for being obliquely arranged between the stay cable of the cable-stayed bridge and a guardrail base, and the two ends of the damping device of the stay cable are connected with the stay cable and the guardrail base respectively. In the stay cable measuring process, the damping device of the stay cable is connected between the stay cable and the guardrail base all the time, repeated disassembly is not needed, the workload of workers can be reduced, and structural damage of a damper caused by repeated disassembly and assembly can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cable-stayed bridges, and in particular to a shock absorbing device for a cable-stayed cable and a cable-stayed bridge. Background Art

[0002] The cable is the main load-bearing component. It will vibrate greatly under the action of wind, rain, earthquake and vehicle load, which is very harmful. Long-term continuous vibration will cause fatigue damage to the cable, resulting in the loss of tensile stress in the cable, reducing its service life and safety. Therefore, after the cable is installed, shock absorbers are often used to overcome the influence of vibration on the cable. Common shock absorbers include a fixed end, a movable end and a damping member connected between the fixed end and the movable end. During installation, the fixed end is bolted to the guardrail base of the cable-stayed bridge, and the movable end is connected to the cable through a connecting rod. The elastic deformation of the damping member overcomes the influence of vibration on the cable.

[0003] During the current construction of the cable-stayed bridge, not only the cable force of the cable must be measured, but also the cable force of the cable must be measured again under vibration after the shock absorber is installed. If the result of the cable force measurement does not meet the use requirements, the connecting rod must be removed from the movable end, and the cable force must be measured again after adjusting the cable. Then, the connecting rod must be installed at the movable end, and the cable force must be measured again until the cable force of the cable meets the use requirements of the bridge. Due to the large stiffness of the connecting rod, in order to avoid the impact of the connecting rod on the workers' work safety, the connecting rod must be repeatedly removed from the movable end, which makes the workers' workload relatively large, and repeated disassembly and assembly operations can easily cause damage to the surface of the movable end, or even destroy the structure of the movable end. Utility Model Content

[0004] The problem solved by the utility model is how to reduce the workload of workers and avoid structural damage of the shock absorber due to repeated disassembly and assembly.

[0005] In order to solve the above problems, on the one hand, the utility model provides a shock absorbing device for a cable-stayed cable, which includes a shock absorber and a basket bolt connected in series, and is used to be obliquely placed between the cable-stayed cable and the guardrail base of a cable-stayed bridge, and the two ends of the shock absorbing device for the cable-stayed cable are respectively connected to the cable-stayed cable and the guardrail base.

[0006] Optionally, one end of the turnbuckle bolt away from the shock absorber is used for rotational connection with the guardrail base.

[0007] Optionally, the shock absorbing device of the inclined cable further comprises a shackle, and the basket bolt is rotatably connected to the guardrail base via the shackle.

[0008] Optionally, the shackle includes a U-shaped section and a connecting shaft located at the opening of the U-shaped section, the connecting shaft is used to pass through the guardrail base and the two ends of the connecting shaft are respectively threadedly connected to the two ends of the opening of the U-shaped section, and the U-shaped section is hung on the hook of the basket bolt.

[0009] Optionally, the shock absorbing device of the inclined cable further comprises a steel wire rope, and an end of the shock absorber away from the basket bolt is used to be connected to the inclined cable through the steel wire rope.

[0010] Optionally, the shock absorbing device of the inclined cable further comprises a cable clamp, which is used to be sleeved on the inclined cable and detachably connected to the inclined cable, and one end of the steel wire rope is connected to the shock absorber, and the other end is connected to the cable clamp.

[0011] Optionally, two rope ends of the steel wire rope are hinged to the shock absorber and the rope clamp respectively.

[0012] Optionally, the shock absorber includes a connecting cylinder, a connecting rod and a spring damping member, a cylinder cover is provided at the opening of the connecting cylinder, the connecting cylinder is connected to the basket bolt, one end of the connecting rod is connected to the steel wire rope, and the other end passes through the cylinder cover and extends into the connecting cylinder, and a connecting plate perpendicular to the connecting rod is provided at the end of the connecting rod extending into the connecting cylinder, the spring damping member is sleeved on the connecting rod and connected between the connecting plate and the cylinder cover, and the connecting rod is slidably connected to the cylinder cover.

[0013] Optionally, the connecting tube and the connecting plate are respectively provided with interconnected drainage grooves.

[0014] Compared with the prior art, the shock absorbing device of the inclined cable of the utility model, the shock absorber and the basket bolt are connected in series to form a series link, the series link is tilted and the two ends are respectively connected to the inclined cable and the guardrail base, and the length of the basket bolt can be adjusted by tightening the basket bolt, so as to gradually tighten the series link so that the series link is tightened. At this time, the shock absorber is in a static equilibrium state, and the vibration of the inclined cable is overcome by the elastic deformation of the shock absorber. If the result after the cable force measurement does not meet the use requirements, that is, when the cable force needs to be adjusted, the basket bolt can be loosened to make the series link loose. At this time, the inclination angle of the inclined cable can be adjusted to change the cable force of the inclined cable, and then the basket bolt is tightened again to tighten the series link so as to continue to measure the cable force of the inclined cable, and the operation is repeated until the cable force of the inclined cable meets the use requirements. The shock absorbing device of the inclined cable provided in this embodiment is always connected between the inclined cable and the guardrail base during the measurement process of the inclined cable, and does not need to be repeatedly disassembled, which can reduce the workload of workers, and can avoid structural damage to the shock absorber due to repeated disassembly and assembly.

[0015] On the other hand, the utility model also provides a cable-stayed bridge, comprising the shock absorbing device of the cable-stayed bridge as described above.

[0016] The cable-stayed bridge has all the beneficial effects of the shock-absorbing device of the cable-stayed bridge, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the shock absorbing device of the inclined cable in the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the turnbuckle bolt in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the shock absorber in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cable clamp in the embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the installation of the shock absorber in the prior art in the embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1-stayed cable; 2-guardrail base; 3-shock absorber; 31-connecting cylinder; 32-connecting rod; 33-spring damper; 34-cylinder cover; 35-connecting plate; 4-basket bolt; 5-wire rope; 6-cable clamp; 7-drainage trough; 8-shackle; 81-U-section; 82-connecting shaft; 10-connecting rod. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the accompanying drawings, the X-axis represents the horizontal position, and the positive direction of the X-axis (that is, the direction in which the arrow of the X-axis points) represents the left side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the right side; in the accompanying drawings, the Y-axis represents the front-back position, and the positive direction of the Y-axis (that is, the direction in which the arrow of the Y-axis points) represents the front side, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the rear side. It should also be noted that the aforementioned Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0027] Combination Figure 1 As shown, the utility model provides a shock absorbing device for a cable-stayed cable, and the cable force measuring device includes a shock absorber 3 and a basket bolt 4 connected in series. The shock absorbing device for the cable-stayed cable is used to be obliquely placed between the cable-stayed cable 1 and the guardrail base 2 of the cable-stayed bridge, and the two ends of the shock absorbing device for the cable-stayed cable are respectively connected to the cable-stayed cable 1 and the guardrail base 2.

[0028] It should be noted that if Figure 5 As shown, in the prior art, the shock absorber 3 is connected to the inclined cable 1 through the connecting rod 10. In the current construction process of the inclined cable 1, not only the cable force of the inclined cable 1 needs to be measured, but also the cable force of the inclined cable 1 needs to be measured again in a vibrating state after the shock absorber 3 is installed. If the result after the cable force measurement does not meet the use requirements, it is necessary to remove the connecting rod 10 from the movable end of the shock absorber 3, and measure the cable force of the inclined cable 1 after adjusting the inclined cable 1, and then install the connecting rod 10 on the movable end of the shock absorber 3, and measure the cable force again until the cable force of the inclined cable 1 meets the use requirements of the bridge. Then, it is necessary to repeatedly remove the connecting rod 10 from the movable end, which makes the workload of the workers relatively large, and the repeated disassembly and assembly operations are likely to cause damage to the surface of the movable end such as the paint surface, and even destroy the structure of the movable end.

[0029] In this embodiment, the shock absorber 3 and the turnbuckle 4 are connected in series to form a series link. The series link is tilted and the two ends are respectively connected to the inclined cable 1 and the guardrail base 2. The length of the turnbuckle 4 can be adjusted by tightening the turnbuckle 4, so as to gradually tighten the series link to make the series link tight. At this time, the shock absorber 3 is in a static equilibrium state, and the vibration of the inclined cable is overcome by the elastic deformation of the shock absorber 3. After measuring the cable force of the inclined cable 1, if the result of the cable force measurement does not meet the use requirements, that is, when the cable force needs to be adjusted, at this time, the turnbuckle 4 can be loosened to make the series link loose, and then the tilt angle of the inclined cable 1 can be adjusted to change the cable force of the inclined cable, and then the turnbuckle 4 can be tightened again to make the series link tight, so as to continue to measure the cable force of the inclined cable 1, and repeat the operation until the cable force of the inclined cable 1 meets the use requirements. The shock absorbing device of the inclined cable provided in this embodiment is always connected between the inclined cable 1 and the guardrail base 2 during the cable force measurement process, and does not need to be repeatedly disassembled, which can reduce the workload of workers and avoid structural damage to the shock absorber 3 due to repeated disassembly and assembly.

[0030] Optionally, one end of the turnbuckle bolt 4 away from the shock absorber 3 is used for rotational connection with the guardrail base 2 .

[0031] Specifically, a through hole is provided on the guardrail base 2, and the hook end of the turnbuckle bolt 4 can be hung in the through hole, so that the turnbuckle bolt 4 can rotate relative to the guardrail base 2, thereby adjusting the tilt angle of the turnbuckle bolt 4 relative to the guardrail base 2. In this way, the turnbuckle bolt 4 is rotatably connected to the guardrail base 2, so that the turnbuckle bolt 4 and the guardrail base 2 can rotate relative to each other to adjust the tilt angle of the turnbuckle bolt 4 relative to the turnbuckle base 2, thereby improving the flexibility of the use of the turnbuckle bolt 4, so as to meet the measurement requirements of the cable force at different tilt angles, and further improve the application range of the turnbuckle bolt 4.

[0032] Optionally, combined Figure 2 As shown, the shock absorbing device of the inclined cable also includes a shackle 8, and the basket bolt 4 is rotatably connected to the guardrail base 2 through the shackle 8.

[0033] Specifically, the shackle 8 is located between the turnbuckle 4 and the guardrail base 2, and one end of the turnbuckle 4 close to the guardrail base 2 is rotatably connected to the guardrail base 2 through the shackle 8. In this way, by utilizing the rotatable connection between the turnbuckle 4 and the guardrail base 2 through the shackle 8, the shackle 8 can avoid the turnbuckle 4 from being directly connected to the guardrail base 2, and can reduce the difficulty of directly rotatably connecting the turnbuckle 4 and the guardrail base 2. In the process of rotating the turnbuckle 4, the shackle 8 is in direct contact with the guardrail base 2, which can reduce the degree of wear of the turnbuckle 4 when rotating relative to the guardrail base 2 to a certain extent, thereby facilitating the installation and use of the turnbuckle 4.

[0034] Optionally, combined Figure 2 As shown, the shackle 8 includes a U-shaped section 81 and a connecting shaft 82 located at the opening of the U-shaped section 81, the connecting shaft 82 passes through the guardrail base 2 and the two ends of the connecting shaft 82 are respectively threadedly connected to the two ends of the opening of the U-shaped section 81, and the U-shaped section 81 is hung on the hook of the basket bolt 4.

[0035] Specifically, both ends of the connecting shaft 82 in the axial direction are respectively provided with external threads, and the two ends of the U-shaped section 81 facing the opening are respectively provided with internal threaded holes. The connecting shaft 82 passes through the through hole on the guardrail base 2 and is threadedly connected to the opening position of the U-shaped section 81. The connecting shaft 82 can rotate on the guardrail base 2, and then the hook of the turnbuckle 4 is hung in the U-shaped section 81, that is, the hook of the turnbuckle 4 is rotatably installed on the guardrail base 2 through the shackle 8. In this way, the connecting shaft 82 is threadedly connected to the U-shaped section 81, and a self-locking structure is formed between the connecting shaft 82 and the U-shaped section 81. Then, the connecting shaft 82 is rotatably connected to the guardrail base 2, and the U-shaped section 81 is hung on the hook of the turnbuckle 4. The U-shaped section 81 increases the installation space of the turnbuckle 4 on the guardrail base 2, and the self-locking structure formed between the connecting shaft 82 and the U-shaped section 81 can prevent the turnbuckle 4 from falling off from the guardrail base 2 during the cable force measurement process, so as to improve the use stability of the turnbuckle 4.

[0036] Optionally, the shock absorbing device of the inclined cable also includes a steel wire rope 5, and one end of the shock absorber 3 away from the basket bolt 4 is used to connect with the inclined cable 1 through the steel wire rope 5. Specifically, the length of the steel wire rope 5 is much greater than the length of the shock absorber 3. In this way, by connecting the steel wire rope 5 between the shock absorber 3 and the inclined cable 1, the steel wire rope 5 can significantly reduce the length of the shock absorber 3 and reduce the deflection of the shock absorber 3, so that the shock absorber 3 moves only in its axial direction to the greatest extent, thereby improving the reliability of the shock absorber 3. In the process of measuring the cable force, the steel wire rope 5 can reduce the connection stiffness between the shock absorber 3 and the inclined cable 1 relative to the traditional connecting rod structure. When the basket bolt 4 is loosened, the steel wire rope 5 can be connected between the inclined cable 1 and the shock absorber 3 all the time, without repeated disassembly, which can reduce the workload of workers, and can avoid structural damage to the shock absorber 3 due to repeated disassembly and assembly.

[0037] Optionally, combined Figure 1 and Figure 4 As shown, the shock absorbing device of the inclined cable also includes a cable clamp 6, which is used to be sleeved on the inclined cable 1 and detachably connected to the inclined cable 1, and one end of the steel wire rope 5 is connected to the shock absorber 3, and the other end is connected to the cable clamp 6.

[0038] Specifically, the cable clamp 6 may include a first semicircular structure and a second semicircular structure, which are connected by bolts and can be detachably mounted on the inclined cable 1 in the form of a hoop, and the first semicircular structure is connected to one end of the wire rope 5 by a shackle, and the other end of the wire rope 5 is connected to the shock absorber 3.

[0039] In this way, the cable clamp 6 is sleeved on the inclined cable 1 and detachably connected to the inclined cable 1. The cable clamp 6 provides a connection position for the wire rope 5 on the inclined cable 1, and one end of the wire rope 5 is connected to the shock absorber 3, and the other end is connected to the cable clamp 6. In this way, when the wire rope 5 is connected to the inclined cable 1, the cable clamp 6 can avoid processing the inclined cable 1 to improve the connection efficiency between the wire rope 5 and the inclined cable 1.

[0040] Optionally, two rope ends of the steel wire rope 5 are hinged to the shock absorber 3 and the rope clamp 6 respectively.

[0041] Specifically, the two rope ends of the steel wire rope 5 are respectively hinged to the shock absorber 3 and the rope clamp 6 through shackles.

[0042] In this way, the two rope ends of the wire rope 5 are respectively hinged to the shock absorber 3 and the cable clamp 6, so that the angle of the wire rope 5 can be adaptively adjusted relative to the shock absorber 3 and the cable clamp 6, so that the inclination angle of the wire rope 5 can be conveniently adjusted during repeated measurement of the cable tension, thereby improving the flexibility of the use of the wire rope 5.

[0043] Optionally, combined Figure 1 and Figure 3 As shown, the shock absorber 3 includes a connecting tube 31, a connecting rod 32 and a spring damper 33. A tube cover 34 is provided at the opening of the connecting tube 31. The connecting tube 31 is connected to the basket bolt 4. One end of the connecting rod 32 is connected to the wire rope 5, and the other end passes through the tube cover 34 and extends into the connecting tube 31. A connecting plate 35 perpendicular to the connecting rod 32 is provided at one end of the connecting rod 32 extending into the connecting tube 31. The spring damper 33 is sleeved on the connecting rod 32 and connected between the connecting plate 35 and the tube cover 34. The connecting rod 32 is slidably connected to the tube cover 34.

[0044] Specifically, the bottom of the connecting tube 31 is connected to the turnbuckle 4 through the shackle 8, a tube cover 34 is provided at the opening of the connecting tube 31, a through hole is provided at the axis of the tube cover 34, one end of the connecting rod 32 is connected to the wire rope 5, and the other end passes through the through hole and extends into the connecting tube 31, and a connecting plate 35 perpendicular to the connecting rod 32 is provided at one end of the connecting rod 32 extending into the connecting tube 31, and the spring damper 33 is sleeved on the connecting rod 32 and connected between the connecting plate 35 and the tube cover 34, and the connecting rod 32 is slidably connected to the tube cover 34. When the inclined cable 1 vibrates, the inclined cable 1 pushes and pulls the connecting plate 35, and the connecting plate 35 moves relative to the tube cover 34, and the distance between the connecting plate 35 and the tube cover 34 changes, thereby realizing the extension or compression of the spring damper 33, so as to overcome the vibration of the inclined cable 1 through the spring damper 33. Among them, in other embodiments, the shock absorber 3 can be replaced by a spring cylinder.

[0045] In this way, the connecting tube 31 is connected to the basket bolt 4 to achieve the fixation of the connecting tube 31, and one end of the connecting rod 32 is connected to the wire rope 5, and the other end passes through the tube cover 34 and extends into the connecting tube 31. The connecting rod 32 is slidably connected with the tube cover 34, so that the vibration of the inclined cable 1 is converted into the relative sliding between the connecting rod 32 and the tube cover 34, and a connecting plate 35 perpendicular to the connecting rod 32 is provided at one end of the connecting rod 32 extending into the connecting tube 31, and the spring damper 33 is sleeved on the connecting rod 32 and connected between the connecting plate 35 and the tube cover 34. The relative sliding between the connecting rod 32 and the tube cover 34 is converted into the relative movement between the connecting plate 35 and the tube cover 34, thereby realizing the compression or extension of the spring damper 33, so as to overcome the vibration of the inclined cable 1 through the spring damper 33. In this way, the overall structure of the shock absorber 3 is simple, and the use cost of the shock absorber 3 is reduced.

[0046] Optionally, combined Figure 3 As shown, the connecting tube 31 and the connecting plate 35 are respectively provided with communicating drainage grooves 7 .

[0047] Specifically, the drainage groove 7 passes through the connecting tube 31 and the connecting plate 35. In this way, by providing the connecting tube 31 and the connecting plate 35 with the interconnected drainage grooves 7, immediate drainage can be achieved to prevent the water in the connecting tube 31 from corroding the spring damper 33, thereby extending the service life of the spring damper 33.

[0048] Optionally, the shock absorbing device of the inclined cable further comprises a rubber anti-skid pad, and the cable clamp 6 is sleeved on the inclined cable 1 through the rubber anti-skid pad.

[0049] Specifically, the rubber anti-slip pad is in the form of an annular rubber ring with an opening, which is sleeved on the inclined cable 1. In combination with the foregoing, the first semicircular structure and the second semicircular structure of the cable clamp 6 embrace the annular rubber ring.

[0050] In this way, the cable clamp 6 is mounted on the inclined cable 1 through the rubber anti-skid pad. The rubber anti-skid pad increases the friction between the cable clamp 6 and the inclined cable 1 to prevent the cable clamp 6 from moving relative to the inclined cable 1 during the cable force measurement, thereby improving the stability of the cable clamp 6.

[0051] The utility model also provides a cable-stayed bridge, comprising the above-mentioned damping device for the cable-stayed bridge.

[0052] The cable-stayed bridge has all the beneficial effects of the shock-absorbing device of the cable-stayed bridge, which will not be described in detail here.

[0053] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A shock absorbing device for a stay cable, characterized in that: The damping device for the inclined cable comprises a damper (3) and a turnbuckle (4) connected in series, the damping device for the inclined cable being arranged obliquely between the inclined cable (1) and the guardrail base (2) of the cable-stayed bridge, and the two ends of the damping device for the inclined cable being connected to the inclined cable (1) and the guardrail base (2) respectively; The shock absorbing device of the inclined cable further comprises a steel wire rope (5), and one end of the shock absorber (3) away from the turnbuckle bolt (4) is used to be connected to the inclined cable (1) via the steel wire rope (5); The shock absorber (3) comprises a connecting tube (31), a connecting rod (32) and a spring damping member (33). A tube cover (34) is provided at the opening of the connecting tube (31). The connecting tube (31) is connected to the basket bolt (4). One end of the connecting rod (32) is connected to the steel wire rope (5), and the other end passes through the tube cover (34) and extends into the connecting tube (31). A connecting plate (35) perpendicular to the connecting rod (32) is provided at one end of the connecting rod (32) extending into the connecting tube (31). The spring damping member (33) is sleeved on the connecting rod (32) and connected between the connecting plate (35) and the tube cover (34). The connecting rod (32) is slidably connected to the tube cover (34).

2. The shock absorbing device for the stayed cable according to claim 1, characterized in that: One end of the turnbuckle bolt (4) away from the shock absorber (3) is used for rotationally connecting with the guardrail base (2).

3. The shock absorbing device for the stayed cable according to claim 2, characterized in that: The shock absorbing device of the inclined cable also includes a shackle (8), and the basket bolt (4) and the guardrail base (2) are rotatably connected via the shackle (8).

4. The shock absorbing device for the stayed cable according to claim 3, characterized in that: The shackle (8) comprises a U-shaped section (81) and a connecting shaft (82) located at the opening of the U-shaped section (81); the connecting shaft (82) is used to penetrate the guardrail base (2) and the two ends of the connecting shaft (82) are respectively threadedly connected to the two ends of the opening of the U-shaped section (81); the U-shaped section (81) is hung on the hook of the basket bolt (4).

5. The shock absorbing device for a stay cable according to claim 1, characterized in that: The shock absorbing device of the inclined cable also includes a cable clamp (6), which is used to be mounted on the inclined cable (1) and is detachably connected to the inclined cable (1), and one end of the steel wire rope (5) is connected to the shock absorber (3), and the other end is connected to the cable clamp (6).

6. The shock absorbing device for the stayed cable according to claim 5, characterized in that: The two rope ends of the steel wire rope (5) are respectively hinged to the shock absorber (3) and the rope clamp (6).

7. The shock absorbing device for a stay cable according to claim 1, characterized in that: The connecting tube (31) and the connecting plate (35) are respectively provided with communicating drainage grooves (7).

8. A cable-stayed bridge, characterized in that: A shock absorbing device comprising a stay cable as claimed in any one of claims 1 to 7.

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