A vibration-damping shear-resistant anchoring device for short hangers

Abstract

The application discloses a damping and shearing prevention anchoring device for a short suspender and belongs to the technical field of bridge engineering, which comprises an anchoring assembly, a force transmission connecting component arranged in the anchoring assembly, an axial damping device and a radial damping device. The end of a suspender cable body is connected by the force transmission connecting component, and the axial damping and the radial damping of the suspender cable body after being fixed in the anchoring area are realized by the two damping devices. The damping and shearing prevention anchoring device for the short suspender changes the horizontal and axial rigidity of the suspender cable body in the anchoring area, can effectively reduce the vibration effect on the suspender in the axial and radial directions, reduces the vibration frequency of the suspender when the bridge deck vibrates, prevents the damage caused by the excessively large vibration frequency of the suspender, solves the damage problem of the anchoring area of the suspender caused by the long-term and repeated relative displacement of the suspender, reduces the replacement frequency of the suspender, prolongs the service life of the suspender and improves the safety and stability of the arch bridge, and has a good application prospect.

Description

Technical Field

[0001] This invention belongs to the field of bridge engineering technology, specifically relating to a vibration-damping and shear-resistant anchoring device for short hangers. Background Technology

[0002] With the continuous expansion of the country's infrastructure construction, the scale of bridge construction is also constantly growing. This not only meets people's travel needs but also greatly promotes local economic development and adds beautiful landscapes to cities. Among them, arch bridges, as one of the most common types of bridges, are widely used due to their advantages such as simple construction and large span capacity.

[0003] In the design and construction of arch bridges, the design of the bridge type is often closely related to the bridge's structural height. When the bridge's structural height is strictly limited, a through-arch bridge is generally used to reduce the height of the bridge deck. For through-arch bridges, anchoring devices are mainly used to anchor the ends of the hangers to the bridge deck and the arch ribs respectively. The load on the bridge deck is transferred to the arch ribs through the hangers, which constitutes the stability of the arch bridge structure. As a load-bearing component that is in direct contact with the bridge deck, the condition of the hangers directly affects the safety of the arch bridge.

[0004] For through-arch bridges, when vehicles pass over the arch, the bridge deck experiences vertical vibration and horizontal swaying, causing the hangers to be subjected to vibration and horizontal shear stress, which affects the reliability of the hanger installation. Meanwhile, the shorter hangers located at both ends of the bridge, due to their shorter length and higher stiffness, experience higher vibration frequencies and greater bending and shear deformation. Furthermore, the hangers exhibit a dynamic amplification effect when subjected to vehicle dynamic loads, making them highly susceptible to fatigue failure during use. This poses a safety hazard to the bridge, requiring regular inspection and replacement of the hangers or the use of more fatigue-resistant, higher-cost materials, increasing the arch bridge's inspection, maintenance, and operating costs. Summary of the Invention

[0005] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a vibration reduction and shear prevention anchoring device for short suspenders, which can realize vibration reduction and shear prevention of suspenders in the anchoring area while completing the anchoring of the suspender end, thereby extending the service life of the suspender and improving the safety of the arch bridge.

[0006] To achieve the above objectives, the present invention provides a vibration-damping and shear-resistant anchoring device for short spurs, comprising an anchoring assembly and a force-transmitting connecting member, an axial vibration damping device, and a radial vibration damping device disposed inside the anchoring assembly.

[0007] The anchoring assembly includes an anchoring sleeve for connecting or limiting the suspender cable to the bridge structure; the anchoring sleeve is a cylindrical structure with at least one open end and forms a cavity for accommodating other components.

[0008] The force-transmitting connection component includes a connecting sleeve; one end of the connecting sleeve is connected to the suspension cable, and the other end is matched with the axial damping device; and

[0009] The axial vibration damping device includes several axial vibration damping units disposed at the bottom of the anchor sleeve, with both ends connected to the connecting sleeve and the anchor sleeve respectively, for axial expansion and contraction damping of the suspender cable after being connected to the connecting sleeve.

[0010] The radial vibration damping device includes a plurality of radial vibration damping units arranged circumferentially, used for the expansion and contraction vibration damping of the suspender cable in the corresponding radial direction; the axis of the radial vibration damping unit extends radially along the force transmission connecting member, and its two ends are respectively matched with the inner wall of the anchor sleeve and the outer peripheral wall of the force transmission connecting member, and at least one end of it is slidably matched with the corresponding wall surface, so that the force transmission connecting member can undergo axial relative displacement with the anchor sleeve.

[0011] As a further improvement of the present invention, the axial vibration damping unit is a plurality of units arranged at intervals along the circumferential direction.

[0012] As a further improvement of the present invention, the axial vibration damping unit and / or the radial vibration damping unit includes a vibration damping sleeve, a first elastic element, and a force transmission element;

[0013] The damping sleeve is a cylindrical structure with at least one open end. The first elastic element is disposed in the damping sleeve and can reciprocate and expand and contract in the axial direction of the damping sleeve. One end of the force transmission element extends into the damping sleeve and is connected to one end of the first elastic element. Correspondingly, the other end of the force transmission element extends out of the damping sleeve and matches the corresponding position of the force transmission connecting member.

[0014] As a further improvement of the present invention, a second elastic element is provided on the side of the damping sleeve away from the extended end of the force transmission member; the second elastic element includes a plurality of elastic units whose elastic deformation direction is the same as that of the first elastic element, and the corresponding damping unit is matched or connected to the corresponding part in the anchoring sleeve through the second elastic element.

[0015] As a further improvement of the present invention, a guide is provided between the damping sleeve and the force transmission component for guiding and limiting the axial movement of the force transmission component and reducing the frictional force of the axial movement of the force transmission component.

[0016] As a further improvement of the present invention, a radial sleeve is provided corresponding to the radial damping unit. The sleeve has a cylindrical structure with one end open. The radial damping unit is coaxially embedded in the radial sleeve and extends out of the opening of the radial sleeve at its end.

[0017] As a further improvement of the present invention, a sliding groove is provided on the inner peripheral wall surface of the anchor sleeve, and the sliding groove extends along the axial direction of the anchor sleeve.

[0018] Accordingly, an end plate is provided at one end of the radial sleeve away from the outlet side. The end plate is embedded in the groove and can slide back and forth in the groove.

[0019] As a further improvement of the present invention, a buffer plate is provided at at least one end of the slide groove for limiting and buffering the sliding of the end plate.

[0020] and / or

[0021] A friction-reducing coating is applied to the inner surface of the groove.

[0022] As a further improvement of the present invention, an elastic body is provided between the radial sleeve and the radial damping unit.

[0023] As a further improvement of the present invention, a friction-reducing unit is provided between the inner wall surface of the elastomer and the protruding end of the radial damping unit.

[0024] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0025] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0026] (1) The vibration reduction and shear-prevention anchoring device for short slings of the present invention connects and fixes the end of the sling to the anchoring area by setting a force transmission connecting member in the anchoring assembly, and transmits the force of the sling to the outside. Vibration reduction devices are set in the axial and radial directions of the force transmission connecting member respectively, so as to realize axial and radial vibration reduction after the end of the sling is anchored, reduce the vibration frequency of the sling itself, effectively reduce the dynamic amplification effect of the sling under dynamic load, and reduce the shear damage caused by horizontal sway of the sling, ensuring the reliability of the short sling and extending the service life of the short sling.

[0027] (2) The vibration reduction and shear-prevention anchoring device for short suspension rods of the present invention consists of a vibration reduction unit composed of a vibration reduction sleeve, a first elastic element and a force transmission element. The first elastic element is fixed on the force transmission connecting member through the force transmission element, so that the force of the force transmission connecting member is smoothly transmitted to the first elastic element, ensuring the stability of the vibration reduction unit under force and improving the vibration reduction effect of the first elastic element. In addition, by setting a second elastic element in the circumferential direction at one end of the vibration reduction sleeve away from the force transmission element, the force of the vibration reduction unit is transmitted, stabilized and dispersed to a certain extent, so as to realize the two-stage vibration reduction of the vibration reduction unit in the axial direction. At the same time, the vibration reduction unit can make a certain displacement in the direction perpendicular to the axis and withstand a certain uneven tension and compression, increasing the shear resistance of the vibration reduction unit and improving the applicability of the vibration reduction device.

[0028] (3) The vibration reduction and anti-shear anchoring device for short rods of the present invention provides a guide between the vibration reduction sleeve and the force transmission component. The guide guide guides the axial movement of the force transmission component and limits it in the circumferential direction, constraining it to move along the axial direction of the axial sleeve, preventing it from generating shear force with the axial sleeve during movement and causing wear and damage, thereby improving the service life of the vibration reduction device.

[0029] (4) The vibration damping and shear-prevention anchoring device for short suspension rods of the present invention provides a groove on the inner wall of the anchoring sleeve corresponding to the radial vibration damping unit, so that the radial vibration damping unit and the force transmission connecting member reciprocate within the groove, providing conditions for the force transmission connecting member to be transmitted to the axial vibration damping device, while reducing the shear force generated by the axial vibration of the force transmission connecting member in the radial vibration damping device, thereby improving the service life of the radial vibration damping device; at the same time, by providing a buffer plate on the end face of the groove, the sliding range of the vibration damping unit is limited, preventing the vibration damping unit from sliding out of the groove; a friction-reducing coating can also be arranged on the inner side of the groove to reduce the friction between the vibration damping unit and the groove, ensuring the continuity and stability of the sliding of the vibration damping unit.

[0030] (5) The vibration damping and shear-prevention anchoring device for short suspension rods of the present invention provides a supporting force for the sliding of the radial vibration damping unit by setting a radial sleeve on the outer periphery of the radial vibration damping unit and using the end plate of the radial sleeve to slide in the groove, thereby ensuring the reliability of the radial vibration damping unit. At the same time, by setting an elastic body between the radial sleeve and the radial vibration damping unit, the force transmission component and the radial sleeve can move relative to each other and avoid collision, so that the force of the force transmission connection component can be smoothly transmitted to the axial vibration damping device, while reducing the shear force on the force transmission component due to swing. Furthermore, a friction-reducing unit is arranged on the inner wall of the elastic body to reduce the friction between the force transmission component and the elastic body.

[0031] (6) The vibration reduction and shear-prevention anchoring device for short suspenders of the present invention changes the horizontal and axial stiffness of the suspender cable in the anchoring area, which can effectively reduce the vibration of the suspender in the axial and radial directions at the same time, reduce the vibration frequency of the suspender when the bridge deck vibrates, prevent damage caused by excessive vibration frequency of the suspender itself, improve the service life of the suspender, reduce the replacement frequency of the suspender, and solve the problem of damage caused by long-term repeated relative displacement of the suspender in the anchoring area, improve the safety and stability of the arch bridge, and has good application prospects. Attached Figure Description

[0032] Figure 1 This is a schematic cross-sectional view of the anchoring device for the vibration-damping and shear-resistant anchoring device for short suspension rods in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the anchor sleeve and thread of the vibration-damping and shear-resistant anchoring device for short suspension rods in an embodiment of the present invention;

[0034] Figure 3 This is a top view schematic diagram of the connection device of the vibration reduction and shear-prevention anchoring device for short suspension rods in an embodiment of the present invention;

[0035] Figure 4 This is a front view schematic diagram of the connection device of the vibration damping and shear-prevention anchoring device for short suspension rods in an embodiment of the present invention;

[0036] Figure 5 This is a schematic cross-sectional view of the axial vibration reduction device of the vibration reduction and shear-prevention anchoring device in an embodiment of the present invention;

[0037] Figure 6 This is a three-dimensional schematic diagram of the axial vibration reduction device of the vibration reduction and shear-prevention anchoring device in the embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the axial vibration damping device arrangement of the vibration damping and shear-prevention anchoring device in an embodiment of the present invention;

[0039] Figure 8 This is a schematic diagram of the radial vibration damping device arrangement in an embodiment of the present invention;

[0040] Figure 9 This is a schematic cross-sectional view of the radial vibration damping device of the vibration damping and shear-prevention anchoring device in an embodiment of the present invention;

[0041] Figure 10 This is a schematic cross-sectional view of the groove of the vibration damping and shear-resistant anchoring device for short suspension rods in an embodiment of the present invention;

[0042] Figure 11 This is a cross-sectional schematic diagram of the radial vibration damping device and the slide groove combination structure in an embodiment of the present invention;

[0043] Figure 12This is a three-dimensional schematic diagram of the radial vibration damping device and the slide groove combination structure in an embodiment of the present invention;

[0044] Figure 13 This is a top view schematic diagram of the radial vibration damping device and the slide groove combination structure in an embodiment of the present invention;

[0045] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0046] 1. Suspension cable body; 2. Anchoring assembly; 3. Force transmission connection component; 4. Axial vibration damping device; 5. Radial vibration damping device;

[0047] 201. Anchor sleeve; 202. Bearing plate; 203. Anchor washer; 204. Anchor nut; 205. Locking nut; 206. External thread;

[0048] 301. Connecting sleeve; 302. Force transmission sleeve; 303. Force transmission pad; 3011. Bolt; 3012. Nut; 3013. Friction-increasing unit; 3014. First elastic body; 3015. Sleeve body;

[0049] 401. Guide component; 402. Vibration damping sleeve; 403. First elastic component; 404. Connector; 405. Force transmission component; 406. Connecting plate; 407. Second elastic component; 408. Bottom pad;

[0050] 501. Radial vibration damping unit; 502. Friction reduction unit; 503. Second elastic body; 504. Radial sleeve; 505. Slide groove; 506. Friction reduction coating; 507. Buffer plate. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] Example:

[0057] Please see Figures 1-13 The vibration-damping and shear-prevention anchoring device in the preferred embodiment of the present invention is used to fix the ends of the hangers, and is particularly suitable for vibration-damping and shear-prevention anchoring of the ends of short hangers at both ends of mid- and low-bearing arch bridges. Specifically, the vibration-damping and shear-prevention anchoring device in the preferred embodiment includes an anchoring component 2, a force-transmitting connecting member 3, an axial vibration-damping device 4, and a radial vibration-damping device 5. The anchoring component 2 is installed on the bridge structure and is connected to the end of the hanger cable 1 through the force-transmitting connecting member 3 to fix the end of the hanger cable 1. Correspondingly, the axial vibration-damping device 4 and the radial vibration-damping device 5 are respectively provided corresponding to the force-transmitting connecting member 3 to achieve axial and radial vibration reduction of the hanger cable 1 after the force-transmitting connecting member 3 is fixed.

[0058] Specifically, such as Figure 1 and Figure 2As shown, the anchoring component 2 in the preferred embodiment includes an anchoring sleeve 201, which has a hollow internal structure to provide space for the force transmission connection component 3, the axial vibration damping device 4 and the radial vibration damping device 5, and to provide redundant space for the axial / radial displacement of the suspender cable 1.

[0059] Meanwhile, in the preferred embodiment, the anchor sleeve 201 is provided on both sides of the bridge structure, and it can be a fixed connection with the bridge structure or a limiting connection after the suspender passes through the bridge structure.

[0060] For the former, the anchor sleeve 201 can be integrally formed on the bridge structure, or it can be fixedly connected to the bridge structure by welding, riveting or other methods. In actual use, the bottom end of the suspender cable 1 can be directly matched and connected to the force transmission connection component 3 in the anchor sleeve 201 to realize the connection setting of the entire suspender structure.

[0061] For the latter, a corresponding limiting mechanism can be set for the anchoring sleeve 201 to achieve a limiting connection between the anchoring sleeve 201 and the suspender cable 1 relative to the bridge body. For example, in... Figure 1 In the preferred embodiment shown, the anchor sleeve 201 is installed on the bridge body via a threaded connection. In this case, the outer circumference of the anchor sleeve 201 has an external thread 206, and a corresponding anchor nut 204 is provided. Through the thread matching between the anchor sleeve 201 and the anchor nut 204, the anchoring assembly 2 can be fixed and positioned below the bridge deck. At this time, the suspender cable 1 passes through the bridge structure and is connected to the anchor sleeve 201, and the top surface of the anchor nut 204 abuts against the bottom surface of the bridge structure.

[0062] In a further preferred embodiment of the above scheme, an anchoring washer 203 and a bearing plate 202 are sequentially arranged between the anchoring nut 204 and the bottom surface of the bridge structure, with the top surface of the bearing plate 202 abutting against the bottom surface of the bridge structure. The corresponding arrangement of the bearing plate 202 increases the contact area between the anchoring assembly 2 and the bottom surface of the bridge structure, improves the efficiency of force transmission, and reduces collision damage to the anchoring assembly 2.

[0063] More preferably, in order to prevent the anchor nut 204 from loosening, an anti-loosening nut 205 is provided on the side of the anchor nut 204 away from the bridge structure. It matches the end thread of the anchor sleeve 201, thereby realizing the anti-loosening control of the anchor nut 204 and ensuring the reliability of the anchor assembly 2.

[0064] More specifically, such as Figure 1As shown in the preferred embodiment, the force-transmitting connecting member 3 is partially or entirely disposed within the accommodating cavity of the anchoring sleeve 201, and includes a connecting sleeve 301, a force-transmitting sleeve 302, and a force-transmitting pad 303 connected in sequence. The structure of the connecting sleeve 301 is as follows: Figure 3 and Figure 4 As shown, it is set on the top of the force transmission connecting member 3, with a cylindrical cavity formed in the middle and a pair of notches on the outer periphery for the axial insertion and clamping of the suspender cable 1.

[0065] In such Figure 3 In the preferred embodiment shown, the connecting sleeve 301 is in the form of a sleeve, comprising two opposing sleeve bodies 3015. The two sleeve bodies 3015 are lockably connected, forming a cylindrical cavity after locking, allowing the inner walls of the two sleeve bodies 3015 to fit tightly against the outer periphery of the end of the boom cable 1, thereby clamping and fixing it. In actual installation, a bolted connector consisting of a bolt 3011 and a nut 3012 is provided for the connection of the two sleeve bodies 3015, which secures the connection between the two sleeve bodies 3015. By tightening the bolted connector, the distance between the two sleeve bodies 3015 can be changed accordingly, thereby locking or unlocking the boom cable 1.

[0066] Preferably, a friction-enhancing unit 3013 is provided on the inner side of the two sets of bodies 3015, which is arranged circumferentially along the inner periphery of the accommodating cavity. More preferably, it is an annular elastic member arranged on the inner periphery of the two sets of bodies 3015, which increases the friction between the inner periphery of the connecting sleeve 301 and the outer periphery of the suspender cable 1.

[0067] More preferably, in the case of Figure 3 In the preferred embodiment shown, a first elastic body 3014 is provided in the notch on the outer periphery of the connecting sleeve 301 (i.e., between the end faces of the connecting parts at both ends of the two sleeves 3015) to ensure the tightness of the connection between the two sleeves 3015. It is further preferably a vertically extending elastic rubber pad.

[0068] More specifically, in the preferred embodiment, the top of the force-transmitting sleeve 302 is connected to the bottom of the connecting sleeve 301, and its bottom is connected to the force-transmitting pad 303. The connection between the three can be an assembly connection or an integral molding. In the preferred embodiment, the three are preferably integrally molded to ensure the integrity and consistency of force transmission.

[0069] Furthermore, such as Figure 1 As shown in the preferred embodiment, the anchor sleeve 201 is further provided with an axial vibration damping device 4 and a radial vibration damping device 5 corresponding to the force transmission connection member 3, which are used for axial vibration damping and radial vibration damping of the force transmission connection member 3 and the suspender cable 1 fixed in the force transmission connection member 3, respectively.

[0070] The axial vibration damping device 4 is located at the bottom of the anchor sleeve 201. It includes multiple axial vibration damping units arranged in a circumferential direction. Each axial vibration damping unit is connected to the bottom of the force transmission pad 303, and the axis of each axial vibration damping unit is parallel to the axis of the force transmission connecting member 3, so that each axial vibration damping unit can perform axial expansion and contraction vibration damping.

[0071] Accordingly, the radial vibration damping device 5 is disposed on the side peripheral wall of the anchor sleeve 201, and includes a plurality of radial vibration damping units 501 arranged circumferentially and capable of axial expansion and contraction. The axis of each radial vibration damping unit 501 extends radially along the force transmission connecting member 3, with one end connected to the outer peripheral wall of the force transmission connecting member 3 and the other end acting to match the side peripheral wall of the anchor sleeve 201. In actual installation, in order to cooperate with the vertical vibration of the force transmission connecting member 3, in the preferred embodiment, the end of the radial vibration damping unit 501 slides and matches the inner wall of the anchor sleeve 201, so that the radial vibration damping unit 501 can slide vertically relative to the anchor sleeve 201.

[0072] In actual installation, the axial damping unit and the radial damping unit 501 in the preferred embodiment are preferably configured with the same structure, and the only difference between the two is the different orientation of the axis.

[0073] In one specific embodiment, the vibration damping unit is preferably as follows: Figure 5 , Figure 6 As shown, it includes a damping sleeve 402, a first elastic element 403, and a force transmission element 405. The damping sleeve 402 is preferably a sleeve structure with an open top, and a cavity is formed in its middle to accommodate the first elastic element 403. The deformation direction of the first elastic element 403 is parallel to or coincides with that of the force transmission element 405. One end of the first elastic element 403 is connected to or abuts against the bottom of the cavity of the damping sleeve 402, and the other end is connected to one end of the force transmission element 405. Correspondingly, the other end of the force transmission element 405 is connected to a corresponding position on the force transmission connecting member 3, thereby achieving vibration damping and buffering of the force transmission connecting member 3 in the axial direction of the damping unit.

[0074] Preferably, in the above-mentioned vibration damping unit, the first elastic element 403 is preferably a vibration damping spring, with its two ends connected to the force transmission element 405 and the vibration damping sleeve 402 respectively, and preferably coaxially arranged with the force transmission element 405. Of course, in addition to the above-mentioned vibration damping spring, the first elastic element 403 in the preferred embodiment can also be set as other elastic components as needed, such as rubber pads, hydraulic vibration damping components, etc.

[0075] More preferably, a second elastic element 407 is also provided at one end of the damping sleeve 402 away from the outlet side, for providing secondary axial damping for the damping sleeve 402. Figure 5In the preferred embodiment shown, the second elastic element 407 includes a plurality of damping springs spaced circumferentially. One end of each damping spring is connected to the end plate of the damping sleeve 402, and the other end is connected to a corresponding part. To ensure the reliability of the second elastic element 407, a bottom pad 408 is provided to connect the other end of the damping spring, so that each damping spring is sandwiched between the bottom pad 408 and the end plate of the damping sleeve 402.

[0076] In addition, in order to facilitate the connection of the damping spring ends in the first elastic element 403 and the second elastic element 407, it is preferable to provide a connecting plate 406 at at least one end of the damping spring. By first connecting the end of the damping spring to the connecting plate 406, and then connecting the connecting plate 406 to the corresponding part, the reliability of the connection of the damping spring end can be guaranteed.

[0077] The corresponding arrangement of the bottom pad 408 not only facilitates the installation of the second elastic element 407, but also makes it easier to connect the entire vibration damping unit within the anchor sleeve 201, ensuring its reliability. Simultaneously, the multiple damping springs within the second elastic element 407 enable axial secondary vibration damping, providing force transmission, stabilization, and dispersion for the vibration damping unit. Furthermore, it facilitates shear resistance in the lateral direction (parallel to the bottom pad 408), ensuring the vibration damping unit possesses a certain displacement capacity perpendicular to the axis and can withstand uneven tension and compression. This results in better shear resistance for the vibration damping unit and improves the applicability of the vibration damping device.

[0078] Further preferably, to ensure the accuracy of the axial movement of the force transmission component 405, a guide component 401 is provided between its outer periphery and the inner wall of the damping sleeve 402, which guides and circumferentially limits the axial movement of the force transmission component 405. In addition, corresponding to the connection between the two ends of the damping unit and the corresponding parts, in a preferred embodiment, a connecting body 404 is provided at each end, which in a specific embodiment is an expansion screw provided on the end of the force transmission component 405 and the bottom pad 408.

[0079] By utilizing the aforementioned vibration damping units positioned corresponding to each other within the anchor sleeve 201, a structure can be formed as follows: Figure 1 The axial vibration damping device 4 and radial vibration damping device 5 are shown. The axial vibration damping device 4 includes multiple axial vibration damping units spaced circumferentially at the bottom of the anchor sleeve 201, for example... Figure 7 The diagram shows six radially spaced units arranged at equal intervals. Correspondingly, the radial damping device 5 preferably also includes a plurality of radial damping units 501 arranged at equal intervals around the outer periphery of the force-transmitting connecting member 3, for example... Figure 8 The six are evenly spaced as shown.

[0080] More specifically, such as Figures 8-13As shown, the radial damping unit 501 in the radial damping device 5 has its axial direction perpendicular to the axial direction of the force transmission connecting member 3, and further extends radially along the force transmission connecting member 3. Meanwhile, one end of the radial damping unit 501 preferably slides and matches its connection part, while its other end is fixedly connected to the corresponding connection part. This allows the force transmission connecting member 3 to move relative to the anchoring sleeve 201 within a certain range along its axial direction after matching with the anchoring sleeve 201 via the radial damping unit 501, thereby meeting the axial damping requirements of the force transmission connecting member 3.

[0081] In such Figure 1 In the preferred embodiment shown, one end of the radial damping unit 501 is fixedly connected to the outer periphery of the force transmission connecting member 3 via the force transmission member 405, and the other end is slidably matched with the inner peripheral wall of the anchor sleeve 201. Correspondingly, a groove 505 is provided on the inner peripheral wall of the anchor sleeve 201 corresponding to the radial damping unit 501. The axis of the groove 505 is parallel to the axis of the anchor sleeve 201, so that after the end plate or bottom pad 408 of the damping sleeve 402 of the radial damping unit 501 is embedded in the groove 505, it can slide back and forth in the groove 505.

[0082] Preferably, such as Figure 12 As shown, in order to prevent the radial sleeve 504 from sliding out of the groove 505, buffer plates 507 are provided on both ends of the groove 505; at the same time, a friction-reducing coating 506 can be arranged on the inner wall of the groove 505 to reduce the friction between the radial sleeve 504 and the inner wall of the groove 505 and ensure the continuity of the sliding of the radial sleeve 504.

[0083] In actual installation, to further ensure the reliability of the radial vibration damping unit 501, a radial sleeve 504 as shown in Figure 9 is provided on its outer periphery. The interior of the radial sleeve 504 forms a cavity to accommodate the radial vibration damping unit 501, and the force transmission member 405 extends from one end of the radial sleeve 504. One end of the radial sleeve 504 is provided with an end plate that can match the sliding groove 505. Correspondingly, the radial vibration damping unit 501 is connected to the bottom surface of the cavity of the radial sleeve 504 via a bottom pad 408.

[0084] Preferably, a second elastic body 503 is provided between the outer periphery of the force transmission member 405 and the radial sleeve 504 to control the relative movement between the force transmission member 405 and the radial sleeve 504, so that the force transmission connection member 3 can smoothly transmit force to the axial vibration damping device 4, while reducing the shear force between the force transmission member 405 and the radial sleeve 504. In addition, a friction-reducing unit 502 can be provided around the outer periphery of the force transmission member 405 to reduce the friction between the force transmission member 405 and the second elastic body 503.

[0085] Of course, when actually setting up vibration damping units, their configuration is not limited to the above-mentioned structural forms. They can be configured in other forms as needed, such as a separate spring unit, a hydraulic telescopic mechanism, a telescopic elastic pad, a combination structure of a spring unit and other elastic mechanisms, etc., as long as they can achieve telescopic vibration damping in the corresponding direction.

[0086] The vibration-damping and shear-resistant anchoring device for short hangers in this invention alters the horizontal and axial stiffness of the hanger cable in the anchoring zone, effectively reducing the vibration on the hanger in both the axial and radial directions. This lowers the vibration frequency of the hanger during bridge deck vibration, preventing damage caused by excessive vibration frequency, extending the hanger's service life, reducing the frequency of hanger replacement, and solving the problem of damage caused by long-term repeated relative displacement of the hanger in the anchoring zone. This improves the safety and stability of arch bridges and has promising application prospects.

[0087] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vibration-damping and shear-resistant anchoring device for short suspension rods, characterized in that, It includes anchoring components and force-transmitting connecting members, axial vibration damping devices, and radial vibration damping devices disposed inside the anchoring components; The anchoring assembly includes an anchoring sleeve for connecting or limiting the suspender cable to the bridge structure; the anchoring sleeve is a cylindrical structure with at least one open end and forms a cavity for accommodating other components. The force-transmitting connection component includes a connecting sleeve; one end of the connecting sleeve is connected to the suspension cable, and the other end is matched with the axial vibration damping device; and The axial vibration damping device includes several axial vibration damping units disposed at the bottom of the anchor sleeve, with both ends connected to the connecting sleeve and the anchor sleeve respectively, for axial expansion and contraction damping of the suspender cable after being connected to the connecting sleeve. The radial vibration damping device includes a plurality of radial vibration damping units arranged circumferentially at intervals, used for the expansion and contraction vibration damping of the suspender cable in the corresponding radial direction; the axis of the radial vibration damping unit extends radially along the force transmission connecting member, and its two ends respectively match the inner wall of the anchor sleeve and the outer peripheral wall of the force transmission connecting member, and at least one end of the unit is in sliding fit with the corresponding wall surface, so that the force transmission connecting member can undergo axial relative displacement with the anchor sleeve; The axial damping unit and / or the radial damping unit include a damping sleeve, a first elastic element, and a force transmission element; the damping sleeve is a cylindrical structure with at least one open end, and the first elastic element is disposed in the damping sleeve and can reciprocate and expand and contract in the axial direction of the damping sleeve. One end of the force transmission component extends into the damping sleeve and is connected to one end of the first elastic component; correspondingly, the other end of the force transmission component extends out of the damping sleeve and matches the corresponding position of the force transmission connecting component. A second elastic element is also provided on the side of the damping sleeve away from the extended end of the force transmission element; the second elastic element includes a plurality of elastic units whose elastic deformation direction is the same as that of the first elastic element, and the corresponding damping unit is matched or connected to the corresponding part in the anchoring sleeve through the second elastic element.

2. The vibration-damping and shear-resistant anchoring device for short suspension rods according to claim 1, characterized in that, The axial vibration damping unit consists of multiple units spaced apart along the circumferential direction.

3. The vibration damping and shear-resistant anchoring device for short suspension rods according to claim 1, characterized in that, A guide is also provided between the damping sleeve and the force transmission component, which is used to guide and limit the axial movement of the force transmission component and reduce the frictional force of the axial movement of the force transmission component.

4. The vibration-damping and shear-resistant anchoring device for short suspension rods according to any one of claims 1 to 3, characterized in that, A radial sleeve is provided corresponding to the radial vibration damping unit. The sleeve has a cylindrical structure with one end open. The radial vibration damping unit is coaxially embedded in the radial sleeve and extends out of the opening of the radial sleeve at its end.

5. The vibration-damping and shear-resistant anchoring device for short suspension rods according to claim 4, characterized in that, A groove is provided on the inner circumferential wall of the anchor sleeve, and the groove extends along the axial direction of the anchor sleeve. Accordingly, an end plate is provided at one end of the radial sleeve away from the outlet side. The end plate is embedded in the groove and can slide back and forth in the groove.

6. The vibration-damping and shear-resistant anchoring device for short suspension rods according to claim 5, characterized in that, A buffer plate is provided at at least one end of the slide groove for limiting and buffering the sliding of the end plate; and / or A friction-reducing coating is applied to the inner surface of the groove.

7. The vibration damping and shear-resistant anchoring device for short suspension rods according to claim 4, characterized in that, An elastic body is provided between the radial sleeve and the radial damping unit.

8. The vibration-damping and shear-resistant anchoring device for short suspension rods according to claim 7, characterized in that, A friction-reducing unit is provided between the inner wall of the elastomer and the protruding end of the radial damping unit.

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