A bridge cable-stayed shock-absorbing structure

Abstract

The present invention relates to the field of bridge engineering technology, and discloses a bridge cable-stayed shock-absorbing structure. The device includes a first shock-absorbing assembly, a fixed cylinder, and a second shock-absorbing assembly. The vibration of the cable-stayed cable can be transmitted to the vertical rod through the first shock-absorbing assembly. Since the vertical rod is connected to the fixed cylinder through multiple first elastic members, and the bottom wall of the vertical rod is connected to the bridge through a rotating ball, when the cable-stayed cable drives the vertical rod to vibrate and rotates through the first shock-absorbing assembly, each first elastic member provides horizontal elastic force to the vertical rod from various angles, thereby achieving a horizontal shock-absorbing effect on the cable-stayed cable. At the same time, the multi-angle elastic support shock-absorbing method can disperse the stress generated by the vibration of the cable-stayed cable, reduce the damage caused by vibration at the connection between the cable-stayed cable and the bridge, improve the tensioning and supporting effect of the cable-stayed cable, enhance the stability of the bridge body, extend the service life of the cable-stayed cable and the bridge structure, and provide a more reliable guarantee for the safe operation of the cable-stayed bridge.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge engineering, in particular to a bridge cable-stayed shock-absorbing structure. Background Art

[0002] In modern bridge engineering, cable-stayed bridges are a commonly used structural form for long-span bridges. They are mainly composed of towers, main beams, and cable-stayed cables. The cable-stayed cables are important load-bearing components. They are prone to vibration during actual use, so corresponding buffering and vibration reduction devices need to be installed to ensure their normal operation.

[0003] Currently, a variety of cable-stayed vibration reduction devices have been proposed. For example, patent application publication number CN103469728A discloses an external damping vibration reduction device for cable-stayed structures, which includes a cable clamp, a crossbar, a damper, an upper bracket, and other structures to form a triangular support structure to achieve vibration reduction for the cable. For example, patent application publication number CN116949930A discloses a bridge cable-stayed vibration reduction mechanism that utilizes a first vertical rod and a second vertical rod connected by a ball joint, along with a spring between the connecting plates, in conjunction with buffer mounts on both sides of the mounting frame, to achieve buffering and vibration absorption when the cable vibrates in multiple directions.

[0004] However, existing shock-absorbing devices generally focus on vertical angle buffering, but are ineffective in protecting the horizontal and left-right vibrations of the stay cables, making them difficult to meet practical engineering requirements. Therefore, a new shock-absorbing structure for bridge stay cables is urgently needed to address this issue. Summary of the Invention

[0005] The object of the present invention is to provide a bridge cable-stayed shock-absorbing structure to provide multi-angle shock-absorbing protection for the cable-stayed cables.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A bridge cable-stayed shock-absorbing structure, characterized in that it includes a first shock-absorbing assembly, a fixed cylinder and a second shock-absorbing assembly, the first shock-absorbing assembly is used to be installed on the cable-stayed cable; the fixed cylinder is used to be installed on the bridge, and the fixed cylinder is located below the first shock-absorbing assembly; the second shock-absorbing assembly includes a first elastic member and a vertical rod, the top end of the vertical rod is installed on the first shock-absorbing assembly, the bottom of the vertical rod is provided with a rotating ball, the vertical rod is provided in the fixed cylinder, and the vertical rod is rotatably mounted on the bridge through the rotating ball, the number of the first elastic members is multiple, and the multiple first elastic members are spaced apart around the axis of the vertical rod, and the opposite ends of each first elastic member are respectively installed on the inner wall of the fixed cylinder and the outer wall of the vertical rod.

[0007] Preferably, the bridge cable-stayed shock-absorbing structure also includes an installation assembly, which includes a second elastic member, an outer ring body and a support member. The outer ring body is arranged in the fixed cylinder and can move in the fixed cylinder along the wire-pulling direction of the fixed cylinder. The rotating ball is rotatably mounted on the outer ring body. The support member is arranged on the side of the outer ring body facing away from the vertical rod. The second elastic member is arranged between the support member and the outer ring body. The support member is used to be installed on the bridge.

[0008] Preferably, the bridge cable-stayed shock-absorbing structure also includes an auxiliary shock-absorbing assembly, which includes a third elastic member, a fourth elastic member, a sliding rod and a sliding bar. The sliding rod is arranged in the fixed cylinder through the third elastic member, and the sliding rod can move along the axial direction of the fixed cylinder; the sliding bar is arranged on the fixed cylinder through the fourth elastic member, and the sliding bar can move laterally relative to the fixed cylinder, and one end of the sliding rod is connected to the outer ring body, and the other end is connected to the sliding bar, and the sliding rod can push the sliding bar to move.

[0009] Preferably, a sliding hole is provided at the bottom of the fixed cylinder, and the sliding bar can be slidably inserted into the sliding hole. An abutment inclined surface is formed on the sliding bar, one end of the sliding rod is connected to the outer ring body, and the other end abuts on the abutment inclined surface, and the outer wall of the outer ring body is in sliding contact with the inner wall of the fixed cylinder.

[0010] Preferably, the number of the sliding bars is not less than four, the number of the sliding rods is the same as the number of the sliding bars, and the sliding bars are arranged at intervals around the axis of the fixed cylinder.

[0011] Preferably, a fixed block is fixedly connected to the inner wall of the fixed cylinder, the fixed block is located below the outer ring body, the sliding rod is slidably connected to the fixed block, the third elastic member is sleeved on the sliding rod, and the top end of the third elastic member is connected to the fixed block, the bottom end of the third elastic member is fixedly connected to an abutment portion, and the abutment portion abuts on the abutment inclined surface; a plurality of sliding rods are evenly spaced around the axis of the fixed cylinder.

[0012] Preferably, the bridge cable-stayed shock-absorbing structure further includes a mounting base, the fixed cylinder being fixed to the mounting base, the vertical rod being mounted on the mounting base via the rotating ball, and an oblique rod being fixedly connected to the outer side of the fixed cylinder, the bottom of the oblique rod being fixedly connected to the mounting base. The oblique rod is used to support and fix the fixed cylinder, thereby improving the installation stability of the fixed cylinder.

[0013] Preferably, it also includes a tower end shock-absorbing assembly and a pre-buried pipe, the tower end shock-absorbing assembly is arranged inside the pre-buried pipe, the tower end shock-absorbing assembly includes a damping ring, a positioning bolt, a positioning bar and a tower end elastic member, the damping ring is installed on the inclined cable, a sliding hole is opened on the pre-buried pipe, the positioning bar is arranged on the pre-buried pipe through the tower end elastic member so that the positioning bar is located at the sliding hole, one end of the positioning bolt passes through the sliding hole and is connected to the damping ring, the part of the positioning bolt located in the sliding hole is spaced apart from the inner wall of the sliding hole, and the positioning bar abuts against the positioning bolt.

[0014] Preferably, there are multiple sliding holes, at least two of which are arranged in the axial direction of the embedded pipe, and at least two of which are arranged in the circumferential direction of the embedded pipe. Each sliding hole is correspondingly provided with a positioning bolt and a positioning bar, and the two positioning bars and two tower end elastic parts relative to each other in the axial direction are symmetrically arranged.

[0015] By adopting the above technical solution, the positioning bolt passes through the sliding hole and squeezes the inclined surface of the positioning bar. The positioning bar is squeezed and the elastic part at the tower end is compressed. When the top end of the positioning bolt is higher than the position of the positioning bar, the elastic force of the elastic part at the tower end drives the positioning bar to reset, so that the positioning bar is pressed against the upper outer side of the positioning bolt, thereby facilitating the positioning of the damping ring and the metal ring.

[0016] Preferably, the tower end shock absorption assembly also includes a metal ring; the damping ring and the metal ring are both symmetrically arranged in two pieces, the two metal rings are fixed by bolts, an internal threaded tube is fixedly installed inside the damping ring, and one end of the positioning bolt passes through the metal ring and is threadedly connected to the internal threaded tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: when in use, the vibration of the inclined cable can be transmitted to the vertical rod through the first shock-absorbing assembly. Since the vertical rod is connected to the fixed cylinder through multiple first elastic members, and the bottom wall of the vertical rod is rotatably connected to the bridge through a rotating ball, when the inclined cable drives the vertical rod to vibrate through the first shock-absorbing assembly and causes the vertical rod to rotate, each first elastic member provides horizontal elastic force to the vertical rod from various angles, thereby achieving a horizontal shock-absorbing effect on the inclined cable.

[0018] Compared to traditional shock-absorbing devices, which primarily focus on vertical buffering, this structure utilizes the first elastic member to provide horizontal elastic force from multiple angles during the rotation of the vertical rod driven by the cable, effectively reducing the horizontal and left-right vibrations of the cable. Furthermore, this multi-angle elastic support and shock absorption method disperses the stress generated by cable vibration, reduces vibration-related damage to the connection between the cable and the bridge, and improves the cable tensioning and support effect, thereby enhancing the stability of the bridge structure, extending the service life of the cable and bridge structure, and providing more reliable protection for the safe operation of the cable-stayed bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the first three-dimensional overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the second three-dimensional overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the oblique rod installation structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixing cylinder of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0025] Figure 7 This is a schematic diagram of the sphere installation structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the hemispherical shell installation structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the slide bar installation structure of the present invention;

[0028] Figure 10 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0029] Figure 11 This is a schematic diagram of the cross-sectional structure of the embedded pipe of the present invention;

[0030] Figure 12 This is a schematic diagram of the cross-sectional structure of the metal ring of the present invention;

[0031] Figure 13 For the present invention Figure 12 Enlarged structural diagram at point D in the middle.

[0032] Figure: 1, mounting base; 2, stay cable; 3, embedded pipe; 4, tower end shock absorber assembly; 41, damping ring; 42, metal ring; 43, internal threaded cylinder; 44, positioning bolt; 45, sliding hole; 46, outer cover; 47, tower end elastic member; 48, positioning strip; 5, bottom plate; 6, fixing cylinder; 7, second shock absorber assembly; 71, vertical rod; 72, mounting sleeve; 73, horizontal rod; 74, damper; 75, cable clamp; 76, first elastic Components; 77, abutment plate; 78, rotating ball; 79, bottom support member; 710, support member; 711, second elastic member; 712, connecting rod; 713, hemispherical shell; 714, outer ring; 715, fixed block; 716, sliding rod; 717, top block; 718, abutment portion; 719, third elastic member; 720, sliding bar; 721, pressure block; 722, fourth elastic member; 723, inverted trapezoidal groove; 8, inclined rod; 9, welding plate. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 5 The present invention provides a technical solution: a bridge cable-stayed shock-absorbing structure, comprising a first shock-absorbing assembly, a fixed cylinder 6 and a second shock-absorbing assembly 7, wherein the first shock-absorbing assembly is used to be installed on the cable-stayed cable 2. The fixed cylinder 6 is used to be installed on the bridge, and the fixed cylinder 6 is located below the first shock-absorbing assembly. The second shock-absorbing assembly 7 comprises a first elastic member 76 and a vertical rod 71, the top end of the vertical rod 71 is installed on the first shock-absorbing assembly, and a rotating ball 78 is provided at the bottom of the vertical rod 71. The vertical rod 71 is arranged in the fixed cylinder 6, and the vertical rod 71 is rotatably mounted on the bridge through the rotating ball 78. There are multiple first elastic members 76, and the multiple first elastic members 76 are arranged at intervals around the axis of the vertical rod 71. The opposite ends of each first elastic member 76 are respectively installed on the inner wall of the fixed cylinder 6 and the outer wall of the vertical rod 71.

[0035] When in use, the vibration of the inclined cable 2 can be transmitted to the vertical rod 71 through the first shock-absorbing assembly. Since the vertical rod 71 is connected to the fixed cylinder 6 through multiple first elastic members 76, and the bottom wall of the vertical rod 71 is connected to the bridge rotation through the rotating ball 78, when the inclined cable 2 drives the vertical rod 71 to vibrate through the first shock-absorbing assembly and causes the vertical rod 71 to rotate, each first elastic member 76 provides horizontal elastic force to the vertical rod 71 from various angles, thereby achieving a horizontal shock-absorbing effect on the inclined cable 2.

[0036] Compared to traditional shock-absorbing devices that primarily focus on vertical buffering, this structure utilizes the first elastic member 76 to provide horizontal elastic force from multiple angles during the rotation of the vertical rod 71 driven by the cable 2, effectively reducing the horizontal and left-right vibrations of the cable 2. Furthermore, this multi-angle elastic support and shock-absorbing method can disperse the stress generated by the vibration of the cable 2, reduce damage caused by vibration at the connection between the cable 2 and the bridge, improve the tensioning and supporting effect of the cable 2, enhance the stability of the bridge structure, and extend the service life of the cable 2 and the bridge structure, providing a more reliable guarantee for the safe operation of the cable-stayed bridge.

[0037] like Figures 1 to 4 As shown, in one embodiment, the first shock-absorbing assembly includes a cable clamp 75, a damper 74, and a crossbar 73. The cable clamp 75 is used to fasten to the inclined cable 2. There are two dampers 74, one end of each damper 74 is rotatably connected to the cable clamp 75, and the other end is rotatably connected to the crossbar 73. The spacing between the two dampers 74 on the cable clamp 75 is smaller than the spacing between the two dampers 74 on the crossbar 73, so that the two dampers 74 and the crossbar 73 form a triangular structure. Specifically, two cable clamps 75 are symmetrically arranged and fixed by bolts. The lower cable clamp 75 is rotatably mounted to the damper 74. The two dampers 74 and the crossbar 73 form a triangular structure. The stability of the triangle allows for efficient transmission of vibration energy to the dampers 74 when the inclined cable 2 vibrates. The damper 74 can dissipate vibration energy through its own deformation, effectively reducing the vibration amplitude of the inclined cable 2. Compared with a single damper or an unstable structure, the triangular layout can absorb vibration from multiple directions, enhance the adaptability to vibrations of different frequencies and directions, and further improve the shock absorption effect.

[0038] In this embodiment, the vertical rod 71 is connected to the horizontal rod 73. When the vibration of the inclined cable 2 is transmitted to the horizontal rod 73 through the first shock-absorbing assembly, the horizontal rod 73 further transmits the vibration to the vertical rod 71, effectively combining horizontal shock absorption with vertical shock absorption. At the same time, the force transmission path from the inclined cable 2 to the bridge structure is optimized. The vibration energy is gradually dispersed and dissipated through the path of cable clamp 75 → damper 74 → horizontal rod 73 → vertical rod 71 → first elastic member 76 → fixed tube 6 → bridge, avoiding local stress concentration. In particular, the design of the rotating ball 78 allows the vertical rod 71 to rotate when subjected to force, so that the force flow can be more evenly distributed in the bridge structure, reducing the stress impact on the connection between the inclined cable 2 and the tower end, and further extending the service life of the inclined cable 2.

[0039] See Figures 5 to 7In one embodiment, the second shock absorbing assembly 7 further includes a clamping plate 77. One end of the first elastic member 76 is fixed to the inner wall of the fixed cylinder 6, and the other end is connected to the clamping plate 77 to press the clamping plate 77 against the outer wall of the vertical rod 71. The inner surface of the clamping plate 77 matches the shape of the outer wall of the vertical rod 71, and the clamping plate 77 fits the outer wall of the vertical rod 71. By providing the clamping plate 77, the contact area between the first elastic member 76 and the vertical rod 71 can be increased, further improving the reliability of the elastic support. Specifically, the number of the clamping plates 77 is consistent with the number of the first elastic members 76, and each first elastic member 76 is connected to a corresponding clamping plate 77, and each clamping plate 77 is arranged at intervals around the axis of the vertical rod 71.

[0040] In one embodiment, the bridge cable-stayed vibration damping structure further includes a mounting assembly comprising a second elastic member 711, an outer ring 714, and a support member 710. The outer ring 714 is disposed within the fixed tube 6 and is movable within the fixed tube 6 along the direction of cable withdrawal. A rotating ball 78 is rotatably mounted on the outer ring 714. The support member 710 is disposed on the side of the outer ring 714 facing away from the vertical rod 71. The second elastic member 711 is disposed between the support member 710 and the outer ring 714. The support member 710 is configured for mounting on the bridge. The rotating ball 78 rotates in conjunction with the outer ring 714, which slides in conjunction with the fixed tube 6. Combined with the first elastic member 76 and the second elastic member 711, the bridge cable-stayed vibration damping structure exhibits multi-dimensional motion decoupling capabilities, enabling it to cope with complex vibration modes such as horizontal oscillation, vertical bounce, and torsion of the cable 2, thereby reducing the transmission rate of vibration to the bridge structure. Furthermore, the coordinated work of the multi-stage elastic system can tune the natural frequency of the stay cable 2 to effectively avoid resonance.

[0041] Specifically, the mounting assembly also includes a hemispherical housing 713 and a connecting rod 712. The hemispherical housing 713 is fixedly connected to the center of the outer ring 714. The rotating ball 78 rotates in engagement with the hemispherical housing 713. The bottom of the outer ring 714 is connected to the connecting rod 712, and the second elastic member 711 is connected to the connecting rod 712. Furthermore, the mounting assembly also includes a bottom support member 79, which is fixed to the support member 710. The provision of the bottom support member 79 facilitates adapting the second shock-absorbing assembly 7 to different installation heights, facilitating a stable connection to the bridge. In this embodiment, the bottom support member 79 and the support member 710 are integrally formed. In other embodiments, the bottom support member 79 may be omitted.

[0042] See Figure 5 、 Figures 7 to 9In one embodiment, the bridge cable-stayed shock-absorbing structure further includes an auxiliary shock-absorbing assembly, which includes a third elastic member 719, a fourth elastic member 722, a slide rod 716, and a slide bar 720. The slide rod 716 is disposed within the fixed cylinder 6 via the third elastic member 719 and is movable along the axis of the fixed cylinder 6. The slide bar 720 is disposed on the fixed cylinder 6 via the fourth elastic member 722 and is movable laterally relative to the fixed cylinder 6. One end of the slide rod 716 is connected to the outer ring 714, and the other end is connected to the slide bar 720. The slide rod 716 is capable of pushing the slide bar 720 to move.

[0043] During use, the horizontal vibration of the outer ring 714 is transmitted to the fixed cylinder 6, which transmits the vibration to the sliding bar 720 via the fourth elastic member 722. The vertical vibration of the outer ring 714 is transmitted to the sliding rod 716, thereby achieving shock absorption through the third elastic member 719. The sliding bar 720 acts on the outer ring 714 through the third elastic member 719 and the sliding rod 716, so that when the vertical vibration of the outer ring 714 is strengthened, it can be transmitted to the horizontal direction to improve the shock absorption effect, and when the horizontal vibration is strengthened, it can be transmitted to the vertical direction for shock absorption. The vibration is transferred and reduced during the transmission process.

[0044] Specifically, a sliding hole is formed at the bottom of the fixed cylinder 6, and a sliding bar 720 is slidably disposed within the sliding hole. An abutting inclined surface is formed on the sliding bar 720. One end of the sliding rod 716 is connected to the outer ring body 714, and the other end abuts the abutting inclined surface. The outer wall of the outer ring body 714 slides in contact with the inner wall of the fixed cylinder 6. The sliding hole provides space for the movement of the sliding bar 720, and the sliding bar 720 and the sliding rod 716 cooperate to abut. When the sliding bar 720 slides out after vibration, it not only increases the support area and improves the support effect, but also can be used to determine the current vibration status of the inclined cable 2 by the sliding state of the sliding bar 720.

[0045] Furthermore, a pressure block 721 is fixedly connected to the bottom of the end of the sliding bar 720 located outside the fixed cylinder 6. The side of the pressure block 721 near the fixed cylinder 6 is fixedly connected to the fixed cylinder 6 via a fourth elastic member 722. The other end of the sliding bar 720 is provided with an inverted trapezoidal groove 723, the inner surface of which forms an abutment slope. The other end of the sliding rod 716 is provided with an abutment portion 718, which is located in the inverted trapezoidal groove 723 and abuts the abutment slope. In one embodiment, the abutment portion 718 can be a roller to reduce abutment friction.

[0046] In one embodiment, the number of the sliding bars 720 is not less than four, and the number of the sliding rods 716 is the same as the number of the sliding bars 720. The sliding bars 720 are arranged at intervals around the axis of the fixed cylinder 6. By arranging not less than four sliding bars 720, shock absorption and buffering can be performed in all directions.

[0047] Specifically, a fixed block 715 is fixedly connected to the inner wall of the fixed cylinder 6, and the fixed block 715 is located below the outer ring body 714. The sliding rod 716 is slidingly connected to the fixed block 715. The third elastic member 719 is sleeved on the sliding rod 716, and the top end of the third elastic member 719 is connected to the fixed block 715. The bottom end of the third elastic member 719 is fixedly connected to the abutment portion 718, and the abutment portion 718 abuts on the abutment inclined surface; multiple sliding rods 716 are evenly spaced around the axis of the fixed cylinder 6.

[0048] In one embodiment, the mounting heights of the fixing blocks 715 are not uniform. The fixing blocks 715 facing the tower end are positioned lower, resulting in a smaller amplitude of elastic deformation of the corresponding third elastic member 719. Reducing the amplitude reduces unnecessary energy consumption by the third elastic member 719, preventing the additional stiffness impact of "overdamping" on the normal operation of the stay cable 2, and achieving a balance between shock absorption and structural stiffness requirements. In other embodiments, the mounting heights of the fixing blocks 715 can also be uniform.

[0049] See Figure 1 and Figure 2 In one embodiment, the bridge cable-stayed shock-absorbing structure further includes a mounting base plate 5 , a fixing cylinder 6 fixed to the mounting base plate 5 , a vertical rod 71 mounted on the mounting base plate 5 via a rotating ball 78 , an outer side of the fixing cylinder 6 is fixedly connected to an inclined rod 8 , and the bottom of the inclined rod 8 is fixedly connected to the mounting base plate 5 . Specifically, a bottom support member 79 is fixedly connected to the mounting base plate 5 .

[0050] See also Figure 10 Furthermore, the bridge cable-stayed shock-absorbing structure also includes a mounting base plate 1 , and a welding plate 9 is fixedly connected to one side of the bottom of the base plate 5 , and the welding plate 9 is welded and fixed to the mounting base plate 1 .

[0051] like Figure 11-13As shown, in one embodiment, the bridge cable-stayed shock-absorbing structure also includes a tower end shock-absorbing assembly 4 and an embedded pipe 3. The tower end shock-absorbing assembly 4 is arranged inside the embedded pipe 3. The tower end shock-absorbing assembly 4 includes a damping ring 41, a positioning bolt 44, a positioning bar 48 and a tower end elastic member 47. The damping ring 41 is installed on the cable-stayed cable 2. A sliding hole 45 is opened on the embedded pipe 3. The positioning bar 48 is arranged on the embedded pipe 3 through the tower end elastic member 47 so that the positioning bar 48 is located at the sliding hole 45. One end of the positioning bolt 44 passes through the sliding hole 45 and is connected to the damping ring 41. The part of the positioning bolt 44 located in the sliding hole 45 is spaced apart from the inner wall of the sliding hole 45, and the positioning bar 48 abuts against the positioning bolt 44. The damping ring 41 fits snugly against the stay cable 2, directly absorbing vibration energy. The positioning bolt 44, spaced from the inner wall of the slide hole 45, cooperates with the positioning bar 48 and the tower-end elastic member 47 to form a flexible constraint on the positioning bolt 44, allowing the stay cable 2 to move freely within a certain range. This converts vibration energy into elastic potential energy and the internal energy of the damping ring 41, reducing the transmission of vibration to the tower body. Furthermore, the tower-end shock-absorbing assembly 4 features a simple structure and is easy to install, effectively improving the overall shock-absorbing performance of the stay cable 2.

[0052] Specifically, there are multiple sliding holes 45, with at least two arranged along the axis of the embedded tube 3 and at least two arranged circumferentially. Each sliding hole 45 corresponds to a positioning bolt 44 and a positioning bar 48. The two positioning bars 48 and two tower-end elastic members 47 are symmetrically arranged in the axially opposite directions. When the inclined cable 2 vibrates, the positioning bars 48 in different directions, under the action of the tower-end elastic members 47, can flexibly limit the positioning bolts 44 in both the axial and circumferential directions, achieving full absorption of the multi-dimensional vibration of the inclined cable 2 and preventing the concentrated transmission of vibration energy to the tower body. The symmetrical arrangement of the tower-end elastic members 47 along the axis and circumference ensures more balanced force distribution, reduces local stress concentration, and effectively reduces the risk of fatigue damage at the joint.

[0053] Specifically, an outer cover 46 is symmetrically fixedly mounted on the outer side of the embedded pipe 3. The outer cover 46 covers the tower end elastic member 47, and the positioning bar 48 can slide relative to the outer cover 46. The outer cover 46 can further cover the positioning bar 48 and the positioning bolt 44, thereby preventing the concrete from hindering the movement of the positioning bar 48 and the positioning bolt 44 after the embedded pipe 3 is embedded.

[0054] In one embodiment, the tower end shock absorbing assembly 4 further includes a metal ring 42, and two damping rings 41 and metal rings 42 are symmetrically arranged up and down. The two metal rings 42 are fixed by bolts, and an internal threaded tube 43 is fixedly installed inside the damping ring 41. One end of the positioning bolt 44 passes through the metal ring 42 and is threadedly connected to the internal threaded tube 43.

[0055] like Figure 11-13As shown, the operator sleeves two damping rings 41 onto the outside of the inclined cable 2, then sleeves two metal rings 42 onto the outside of the damping ring 41. The metal rings 42 are slidably connected to the internal threaded tube 43 and fixed with bolts. The metal rings 42 press and fix the damping ring 41. The positioning bolt 44 is then screwed into the internal threaded tube 43 so that the top height of the positioning bolt 44 is less than the inner diameter of the embedded tube 3. The metal ring 42 and the damping ring 41 are then slid into the embedded tube 3, keeping the position of the positioning bolt 44 corresponding to the sliding hole 45. The positioning bolt 44 is then screwed out, while still keeping a portion of it inside the internal threaded tube 43. The positioning bolt 44 passes through the sliding hole 45 and presses the inclined surface of the positioning bar 48. The compression of the positioning bar 48 compresses the tower end elastic member 47. When the top of the positioning bolt 44 is higher than the position of the positioning bar 48, the elastic force of the tower end elastic member 47 drives the positioning bar 48 to return to its original position, so that the positioning bar 48 is pressed against the upper outer side of the positioning bolt 44, thereby facilitating the positioning of the damping ring 41 and the metal ring 42. After the partial installation of the tower end shock absorption assembly 4 is completed, the embedded pipe 3 is embedded.

[0056] In the description of this application, it should be understood that if the terms "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 on this application.

[0057] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0058] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A bridge cable-stayed shock-absorbing structure, characterized in that: include: a first shock-absorbing assembly, configured to be mounted on the stay cable; A fixing cylinder (6) is used for being installed on a bridge, wherein the fixing cylinder (6) is located below the first shock absorbing assembly; A second shock-absorbing assembly (7) includes a first elastic member (76) and a vertical rod (71), wherein the top end of the vertical rod (71) is mounted on the first shock-absorbing assembly, a rotating ball (78) is provided at the bottom end of the vertical rod (71), and the vertical rod (71) is disposed in the fixed cylinder (6). There are a plurality of first elastic members (76), and the plurality of first elastic members (76) are spaced apart around the axis of the vertical rod (71). The opposite ends of each first elastic member (76) are respectively mounted on the inner wall of the fixed cylinder (6) and the outer wall of the vertical rod (71); The mounting assembly comprises a second elastic member (711), an outer ring body (714) and a support member (710), wherein the outer ring body (714) is arranged in the fixed cylinder (6) and is movable in the fixed cylinder (6) along the axis direction of the fixed cylinder (6), the rotating ball (78) is rotatably mounted on the outer ring body (714), the support member (710) is arranged on a side of the outer ring body (714) facing away from the vertical rod (71), the second elastic member (711) is arranged between the support member (710) and the outer ring body (714), and the support member (710) is used for mounting on a bridge; The auxiliary shock absorbing component includes a third elastic member (719), a fourth elastic member (722), a sliding rod (716) and a sliding bar (720), wherein the sliding rod (716) is arranged in the fixed cylinder (6) through the third elastic member (719), the sliding rod (716) can move along the axial direction of the fixed cylinder (6), the sliding bar (720) is arranged on the fixed cylinder (6) through the fourth elastic member (722), a sliding hole is opened at the bottom of the fixed cylinder (6), the sliding bar (720) can be slidably passed through the sliding hole and can move laterally relative to the fixed cylinder (6), an abutting inclined surface is formed on the sliding bar (720), one end of the sliding rod (716) is connected to the outer ring body (714), and the other end abuts on the abutting inclined surface, the sliding rod (716) can push the sliding bar (720) to move, and the outer wall of the outer ring body (714) is in sliding contact with the inner wall of the fixed cylinder (6).

2. The bridge cable-stayed shock-absorbing structure according to claim 1, characterized in that: The number of the sliding bars (720) is not less than four, the number of the sliding rods (716) is the same as the number of the sliding bars (720), and the sliding bars (720) are arranged at intervals around the axis of the fixed cylinder (6).

3. The bridge cable-stayed shock-absorbing structure according to claim 2, characterized in that: A fixed block (715) is fixedly connected to the inner wall of the fixed cylinder (6), and the fixed block (715) is located below the outer ring body (714). The sliding rod (716) is slidably connected to the fixed block (715). The third elastic member (719) is sleeved on the sliding rod (716), and the top end of the third elastic member (719) is connected to the fixed block (715). The bottom end of the third elastic member (719) is fixedly connected to an abutment portion (718), and the abutment portion (718) abuts against the abutment inclined surface; multiple sliding rods (716) are evenly spaced around the axis of the fixed cylinder (6).

4. A bridge cable-stayed shock-absorbing structure according to any one of claims 1 to 3, characterized in that: It also includes a mounting base plate (5), the fixed cylinder (6) is fixed on the mounting base plate (5), the vertical rod (71) is mounted on the mounting base plate (5) via the rotating ball (78), the outer side of the fixed cylinder (6) is fixedly connected to an inclined rod (8), and the bottom of the inclined rod (8) is fixedly connected to the mounting base plate (5).

5. The bridge cable-stayed shock-absorbing structure according to any one of claims 1 to 3, characterized in that: The invention also includes a tower end shock absorbing assembly (4) and a pre-buried pipe (3), wherein the tower end shock absorbing assembly (4) is arranged inside the pre-buried pipe (3), and the tower end shock absorbing assembly (4) includes a damping ring (41), a positioning bolt (44), a positioning bar (48) and a tower end elastic member (47), wherein the damping ring (41) is used for being installed on the inclined cable, and a sliding hole (45) is provided on the pre-buried pipe (3), and the positioning bar (48) is arranged on the pre-buried pipe (3) through the tower end elastic member (47) so that the positioning bar (48) is located at the sliding hole (45), and one end of the positioning bolt (44) passes through the sliding hole (45) and is connected to the damping ring (41), and the part of the positioning bolt (44) located in the sliding hole (45) is spaced apart from the inner wall of the sliding hole (45), and the positioning bar (48) abuts against the positioning bolt (44).

6. The bridge cable-stayed shock-absorbing structure according to claim 5, characterized in that: There are multiple sliding holes (45), at least two of which are arranged in the axial direction of the embedded pipe (3), and at least two of which are arranged in the circumferential direction of the embedded pipe (3). Each of the sliding holes (45) is correspondingly provided with a positioning bolt (44) and a positioning bar (48), and the two positioning bars (48) and the two tower end elastic members (47) that are opposite to each other in the axial direction are symmetrically arranged.

7. The bridge cable-stayed shock-absorbing structure according to claim 6, characterized in that: The tower end shock absorbing assembly (4) further includes a metal ring (42); the damping ring (41) and the metal ring (42) are both symmetrically arranged in two pieces, the two metal rings (42) are fixed by bolts, an internal threaded barrel (43) is fixedly installed inside the damping ring (41), and one end of a positioning bolt (44) passes through the metal ring (42) and is threadedly connected to the internal threaded barrel (43).

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