Flexible buffering energy dissipation anti-beam-falling device and bridge structure
By utilizing the flexible buffer energy dissipation anti-fall beam device, the deformation energy dissipation mechanism of flexible connectors and buffer elements solves the problems of limited displacement and non-reusability of existing anti-fall beam devices, achieving adaptability to a large displacement range and energy dissipation, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CCCC FIRST HIGHWAY CONSULTANTS CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-04-21
AI Technical Summary
Existing anti-fall beam devices have problems such as limited displacement, no energy dissipation function, need for repair after damage, high cost, and inability to cope with asymmetric impact loads under the coupled effects of multiple disasters.
A flexible buffer energy dissipation anti-fall beam device is adopted, which connects the buffer element through a flexible connector. The energy is dissipated by the deformation of the buffer element, and it returns to the initial state after the external force disappears. It adapts to multi-directional displacement changes and realizes multiple energy dissipation mechanisms.
It achieves adaptability over a large displacement range, has good energy dissipation effect, is reusable, reduces maintenance costs, and is adaptable to asymmetric impact loads under multiple disasters.
Smart Images
Figure CN224148523U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of anti-falling beam devices, specifically relating to a flexible buffer energy-dissipating anti-falling beam device and bridge structure. Background Technology
[0002] In bridge seismic engineering, anti-falling beam devices are core safety components that ensure a reliable connection between the beam and the pier. However, existing anti-falling beam devices have many drawbacks in use.
[0003] In related technologies, blocks are often used to prevent beam displacement from exceeding limits. However, blocks are rigid structures, which have drawbacks such as limited displacement, no energy dissipation function, and the need for repair after damage.
[0004] Rigid limiting methods such as steel clips or bolt anchors rely on the plastic deformation of metal materials to dissipate energy. These devices generally produce more than 10% residual deformation after being subjected to large horizontal impact loads, and the displacement deformation is limited, resulting in the structure being non-reusable and having high replacement costs.
[0005] Although the limiting method of wire rope limiters has a high load-bearing capacity, the single elastic energy dissipation mechanism cannot cope with the asymmetric impact load under the coupled effects of multiple disasters. Utility Model Content
[0006] The purpose of this application is to provide a flexible buffer energy dissipation anti-fall beam device and bridge structure to solve the above-mentioned technical problems existing in the prior art.
[0007] This application is implemented as follows:
[0008] In a first aspect, embodiments of this application provide a flexible buffer energy-dissipating anti-falling beam device, including a buffer assembly for connecting beams between beams or between a beam and a pier; the buffer assembly includes a flexible connector and at least one buffer element, the buffer element being a ring structure, the buffer element having two connection areas, both connection areas being connected to the connection area of a beam, a pier, or another buffer element through the flexible connector; the buffer element can deform under the tensile force of the flexible connector to increase the distance between the two connection areas, and when the tensile force of the flexible connector disappears, the buffer element can recover from the deformed state to the undeformed initial state.
[0009] Secondly, embodiments of this application provide a bridge structure, including the flexible buffer energy dissipation and anti-falling beam device provided in the first aspect embodiment.
[0010] The technical solution provided in this application can achieve the following beneficial effects:
[0011] In this application, the buffer assembly includes a buffer element and a flexible connector. The flexible connector connects the buffer element to the beam or pier. The flexible connector is flexible and has a large displacement range, which can adapt to the displacement changes of the beam in multiple directions and cope with asymmetric impact loads under the coupled action of multiple disasters. Furthermore, the flexible connector can stretch the buffer element to deform, dissipating energy. After deformation, the buffer element can return to its initial undeformed state, which is convenient for reuse. Attached Figure Description
[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a front view of the anti-falling beam device provided in some embodiments of this application. Figure 1 ;
[0014] Figure 2 This is a top view of the anti-falling beam device provided in some embodiments of this application;
[0015] Figure 3 These are schematic diagrams of the flexible connectors provided in some embodiments of this application;
[0016] Figure 4 This is a schematic diagram of the overall structure of the buffer element provided in some embodiments of this application;
[0017] Figure 5 This application provides some embodiments regarding... Figure 4 AA section Figure 1 ;
[0018] Figure 6 This application provides some embodiments regarding... Figure 4 AA section Figure 2 ;
[0019] Figure 7 This application provides some embodiments regarding... Figure 4 AA section Figure 3 ;
[0020] Figure 8 This is a schematic diagram illustrating the cooperation between the buffer element and the fixing ring provided in some embodiments of this application. Figure 1 ;
[0021] Figure 9 This is a schematic diagram illustrating the cooperation between the buffer element and the fixing ring provided in some embodiments of this application. Figure 2 ;
[0022] Figure 10 This is a front view of the buffer element provided in some embodiments of this application. Figure 1 ;
[0023] Figure 11 This is a front view of the buffer element provided in some embodiments of this application. Figure 2 ;
[0024] Figure 12 This is a front view of the buffer element provided in some embodiments of this application. Figure 3 ;
[0025] Figure 13 This is a front view of the anti-falling beam device provided in some embodiments of this application. Figure 2 ;
[0026] Figure 14 This is a front view of the anti-falling beam device provided in some embodiments of this application. Figure 3 ;
[0027] Figure 15 This is a front view of the anti-falling beam device provided in some embodiments of this application. Figure 4 ;
[0028] Figure 16 This is a front view of the anti-falling beam device provided in some embodiments of this application. Figure 5 .
[0029] In the diagram: 10-buffer assembly, 100-flexible connector, 110-shackle, 120-chain link, 200-buffer element, 210-protective layer, 220-buffer ring, 300-fixing ring, 400-fixing bracket. Detailed Implementation
[0030] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.
[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0032] This application provides a flexible buffer energy-dissipating anti-falling beam device, referencing... Figure 1 , Figure 2 , Figures 13 to 16 As shown, the anti-falling beam device includes a buffer assembly 10, which is used to connect between beams or between a beam and a pier.
[0033] In the event of beam movement, the buffer assembly 10 connects the beam to another beam or pier, limiting the maximum displacement of the beam and preventing it from falling off the pier due to excessive movement. Under extreme loads, when the beam's movement reaches its maximum, it pulls on the buffer assembly 10, which dissipates some of the energy.
[0034] refer to Figure 1 , Figure 2 , Figures 13 to 16 As shown, the buffer assembly 10 includes a flexible connector 100 and at least one buffer element 200. The buffer element 200 has a ring structure and two connection areas. Both connection areas are connected to the beam, pier, or connection area of another buffer element 200 through the flexible connector 100.
[0035] The buffer element 200 is the main component that provides cushioning. The connection area is the region where the buffer element 200 connects to the flexible connector 100. The number of buffer elements 200 can be selected according to actual usage requirements; the more buffer elements 200, the better the energy dissipation effect. When only one buffer element 200 is provided, both connection areas of the buffer element 200 are connected to the beam or pier via the flexible connector 100. When at least two buffer elements 200 are provided, the two buffer elements 200 are connected together via the flexible connector 100.
[0036] The anti-falling beam device provided in this application embodiment improves its installation flexibility through the flexible connector 100, has a large displacement range, can adapt to the displacement changes of the beam in multiple directions, and can cope with asymmetric impact loads under the coupled effects of multiple disasters.
[0037] The buffer element 200 can deform under the pulling action of the flexible connector 100 to increase the distance between the two connecting areas, and when the pulling action of the flexible connector 100 disappears, the buffer element 200 can return from the deformed state to the undeformed initial state.
[0038] The buffer element 200 is configured as a ring structure. When the two flexible connectors 100 connected to the buffer element 200 pull the buffer element 200, the ring structure of the buffer element 200 deforms and its ring cavity is gradually compressed. Energy is dissipated by deforming the buffer element 200. At the same time, after the external pulling force disappears, the buffer element 200 can return to its undeformed initial state, so as to facilitate subsequent reuse and reduce costs.
[0039] In practical use, one end of the buffer assembly 10 is connected to the beam, and the other end is connected to the pier or another beam. When the beam is displaced under the impact of the load, the buffer assembly 10 connected to the beam will move with the beam. As the distance the beam moves increases, the distance between the two ends of the buffer assembly 10 increases until the distance between the two ends of the buffer assembly 10 is equal to the length of the buffer assembly 10. At this time, the two ends of the buffer assembly 10 are subjected to tension. The tension is applied to the buffer element 200 through the flexible connector 100. The buffer element 200 deforms under force, and the distance between the two connecting areas of the buffer element 200 increases, thereby adapting to the beam displacement and holding the beam in place when the displacement exceeds the limit, thus playing a limiting role and preventing the bridge beam from slipping.
[0040] The anti-falling beam device provided in this application embodiment restricts the structure of the buffer element 200, realizing multiple energy dissipation mechanisms such as elastic deformation, viscous damping, and displacement buffering. Under extreme loads, it can effectively suppress beam displacement while ensuring the recoverability of the device, thus overcoming the trade-off between high load-bearing capacity and long-term economic efficiency in traditional anti-falling beam technology. The anti-falling beam device provided in this application embodiment can be adapted to various types of bridge structures, including beam bridges, arch bridges, suspension bridges, cable-stayed bridges, and steel frame bridges.
[0041] In some embodiments of this application, reference is made to Figures 14 to 16 As shown, there are multiple buffer elements 200, which are connected in series via flexible connectors 100. The energy dissipation effect of the buffer assembly 10 can be adjusted by changing the number of buffer elements 200. Furthermore, while adjusting the number of buffer elements 200, the overall length of the buffer assembly 10 can also be adjusted to adapt to the position of the beam.
[0042] Preferably, the length of the flexible connector 100 between two adjacent buffer elements 200 is less than the length of the flexible connector 100 between the buffer element 200 and the beam or pier. This allows the buffer elements 200 to be concentrated in the central region of the buffer assembly 10, making it easier for the buffer assembly 10 to perform its buffering and energy dissipation function.
[0043] In some embodiments of this application, the number of buffer components 10 is greater than or equal to two, see reference. Figure 15 and Figure 16 As shown, all buffer components 10 are arranged in parallel between beams or between beams and piers. The buffer components 10 provided in this application have low requirements for installation position. Multiple buffer components 10 can be connected to the beam at the same time. Increasing the number of buffer components 10 connected to the beam can improve the limiting effect on the beam and the buffering energy dissipation effect.
[0044] In some embodiments provided in this application, reference is made to Figures 5 to 7As shown, the buffer element 200 includes a protective layer 210 and a buffer ring 220. The buffer ring 220 is a ring structure formed by multiple metal wires intertwined. The protective layer 210 covers the buffer ring 220 and is made of a flexible material. The protective layer 210 has a certain elasticity and can change with the deformation of the buffer ring 220, so as to always cover the buffer ring 220, isolate the buffer ring 220 from the external environment, and avoid external environmental factors, such as humidity and temperature, from affecting the structure of the buffer ring 220.
[0045] The buffer ring 220 is a ring structure formed by multiple metal wires intertwined. The metal wires and similar structures have high strength and tensile strength, and the intertwined nature of the wires makes them less prone to breakage under tension. Furthermore, the buffer ring 220 needs to have a restoring ability; therefore, elastic metals must be selected to ensure that the buffer ring 220 can return to its initial state after tensile deformation.
[0046] In some embodiments of this application, the metal wire can be selected from steel wire, steel strand, or shape memory alloy, etc. When steel wire is selected, steel wire rope products can be directly used, with one or more steel wire ropes intertwined to form a ring structure. Figure 5 This is a cross-sectional view of a buffer element 200 formed by winding a single steel wire rope. Figure 6 and Figure 7 This is a cross-sectional view of a buffer element 200 formed by winding multiple steel wire ropes. The annular shape of the buffer element 200 can be circular, elliptical, or rhomboid, see reference. Figures 10 to 12 As shown, the ring of the buffer element 100 can be other ring structures.
[0047] In some embodiments of this application, the protective layer 210 may be made of rubber, polyurethane, or fiber composite materials.
[0048] The connection area of the buffer element 200 is connected to the flexible connector 100. In some embodiments, the connection area of the buffer element 200 is connected to a retaining ring 300. (See reference...) Figure 4 As shown, the fixing ring 300 is sleeved on the outside of the buffer ring 220. The fixing ring 300 is connected to the flexible connector 100, and the fixing ring 300 is used to connect the buffer ring 220 and the flexible connector 100. In addition, the fixing ring 300 is fixedly installed with the protective layer 210 to fix the position of the fixing ring 300 and prevent the fixing ring 300 from moving at will, which would affect the anti-falling beam function of the buffer assembly 10.
[0049] It is understandable that both the buffer ring 220 and the fixing ring 300 are annular structures. The fixing ring 300 is fitted over the buffer ring 220, effectively creating a nested connection between the two. When the fixing ring 300 is stretched by the flexible connector 100, it will cause the buffer ring 220 to stretch and deform. The nested connection between the fixing ring 300 and the buffer ring 220 is stable and not easily detached.
[0050] In some embodiments of this application, reference is made to Figure 8 As shown, the fixing ring 300 is fixed to the protective layer 210 by being embedded in the protective layer 210. Part of the fixing ring 300 is embedded in the protective layer 210, and this part of the fixing ring 300 contacts and engages with the buffer ring 220 to ensure that the fixing ring 300 can smoothly drive the buffer ring 220 to stretch and deform. Another part of the fixing ring 300 protrudes outward relative to the protective layer 210 to form a cavity with the outer surface of the protective layer 210, facilitating the connection between the flexible connector 100 and the fixing ring 300. Additionally, it should be noted that the fixing ring 300 contacts the inner surface of the buffer ring 220 to accommodate the stretching and deformation direction of the buffer ring 220.
[0051] In some specific embodiments, the retaining ring 300 can be fixed to the protective layer 210 during the manufacturing process of the protective layer 210, without the need for subsequent embedding and fixing steps.
[0052] In other embodiments of this application, the retaining ring 300 is sleeved on the outer surface of the protective layer 210, and the retaining ring 300 is fixedly connected to the outer surface of the protective layer 210, as shown in the reference. Figure 9 As shown. The retaining ring 300 is not only fitted over the buffer ring 220, but also over the protective layer 210. It does not directly contact the buffer ring 220, so the retaining ring 300 can be installed after the buffer element 200 is manufactured.
[0053] In some preferred embodiments, the two connecting regions of the buffer element 200 are arranged radially along the buffer element 200, so that the buffer element 200 can be stretched to its maximum length after being deformed by force, making full use of the buffering effect of the buffer element 200 and improving its buffering energy dissipation effect.
[0054] The flexible connector 100 is a connection structure. In some embodiments, the flexible connector 100 can be a chain connection structure, such as a stopless anchor chain or a stopped anchor chain. In other embodiments, the flexible connector 100 can also be a rope structure made of materials with strong tensile strength, such as steel wire rope.
[0055] In some preferred embodiments of this application, both ends of the flexible connector 100 are provided with shackles 110, as can be referred to Figure 3 As shown, the shackle 110 is detachably connected to the buffer element 200, the beam, or the pier.
[0056] The buffer assembly 10 is connected between beams or between a beam and a pier via shackles 110, facilitating installation and subsequent maintenance and replacement. The shackles 110 are detachably connected to the buffer element 200, allowing for easy replacement of the buffer element 200 and adjustment of the number of buffer elements 200 within the buffer assembly 10, thus adjusting the overall length of the buffer assembly 10. Furthermore, both ends of the flexible connector 100 can be detachably connected to other components, and the overall length of the buffer assembly 10 can be adjusted by replacing flexible connectors 100 of different lengths.
[0057] In other embodiments of this application, the flexible connector 100 may include only one shackle 110, which is directly connected between two adjacent buffer elements 200.
[0058] In some embodiments, reference Figure 3 As shown, at least one link 120 is also provided between the two shackles 110. When the number of links 120 is greater than one, all links 120 are connected in series. The flexible connector 100 is formed by connecting the shackles 110 and the links 120. The more links 120 there are, the longer the flexible connector 100 is. By adjusting the number of links 120 between the two shackles 110, the length of the flexible connector 100 is adjusted, thereby adapting to beams in different positions to limit the range of movement of the beams and prevent the beams from slipping.
[0059] In some embodiments of this application, the anti-falling beam device further includes two fixed supports 400, which are used to fix the beam or pier, and the buffer assembly 10 is connected between the two fixed supports 400. The flexible connector 100 is directly fixed to the fixed supports 400, thereby fixing the buffer assembly 10 to the beam or pier. The fixed supports 400 generally have connecting holes for the shackles 110 to pass through. The number of connecting blocks on the fixed supports 400 varies depending on the number of buffer assemblies 10. (See reference...) Figure 13 and Figure 14 As shown, a fixed bracket 400 is connected to a corresponding buffer assembly 10. (Reference) Figure 15 and Figure 16 As shown, a fixed bracket 400 is connected to two buffer components 10.
[0060] In some specific embodiments, the fixed bracket 400 is anchored to the beam or pier. The fixed bracket 400 is mainly composed of lug steel plates and reinforcing ribs to enhance the structural stress performance of the fixed bracket 400.
[0061] For newly constructed beams, the fixed bracket 400 can be fixed to the beam or pier by pre-embedding anchors. For existing bridges in service, the fixed bracket 400 can be fixed to the beam or pier by anchoring bolts and anchoring rebars.
[0062] This application also provides a bridge structure, including the flexible buffer energy dissipation anti-falling beam device provided in any of the above embodiments, and also includes a beam body. One end of the anti-falling beam device is connected to the beam body, and the other end is fixedly connected to the pier or another beam body, thereby limiting the beam body and preventing the beam body from slipping.
[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0064] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A flexible energy-dissipating anti-falling beam device, characterized in that, Includes a buffer assembly (10) for connecting beams to beams or beams to piers; The buffer assembly (10) includes a flexible connector (100) and at least one buffer element (200). The buffer element (200) is a ring structure and has two connection areas. Both connection areas are connected to the beam, pier, or connection area of another buffer element (200) through the flexible connector (100). The buffer element (200) can deform under the pulling action of the flexible connector (100) to increase the distance between the two connection areas, and when the pulling action of the flexible connector (100) disappears, the buffer element (200) can recover from the deformed state to the undeformed initial state.
2. The flexible energy-dissipating anti-falling beam device according to claim 1, wherein, There are multiple buffer elements (200), and the multiple buffer elements (200) are connected in series through the flexible connector (100). The length of the flexible connector (100) between two adjacent buffer elements (200) is less than the length of the flexible connector (100) between the buffer element (200) and the beam or pier.
3. The flexible energy-dissipating anti-falling beam device according to claim 1, wherein, The number of buffer components (10) is greater than or equal to two, and all the buffer components (10) are arranged in parallel between the beams or between the beams and the piers; And / or, the anti-falling beam device further includes two fixed supports (400) for fixing to the beam or pier, and the buffer assembly (10) is connected between the two fixed supports (400).
4. The flexible energy dissipation anti-collapse beam device of claim 1, wherein, The buffer element (200) includes a protective layer (210) and a buffer ring (220). The buffer ring (220) is a ring structure formed by multiple metal wires intertwined. The protective layer (210) covers the buffer ring (220) and is made of a flexible material.
5. A flexible energy-dissipating fall-protection device according to claim 4, wherein, The connection area of the buffer element (200) is connected to a fixing ring (300), the fixing ring (300) is sleeved on the outside of the buffer ring (220), the fixing ring (300) is fixedly set with the protective layer (210), and the fixing ring (300) is connected with the flexible connector (100).
6. A flexible energy-dissipating fall-protection device according to claim 5, wherein, Part of the fixing ring (300) is embedded and fixed in the protective layer (210) and contacts and cooperates with the buffer ring (220); Alternatively, the fixing ring (300) is sleeved on the outside of the protective layer (210), and the fixing ring (300) is fixedly connected to the outer surface of the protective layer (210).
7. The flexible energy dissipation anti-collapse beam device of claim 1, wherein, The two connecting regions of the buffer element (200) are arranged radially along the buffer element (200).
8. The flexible energy dissipation anti-collapse beam device of claim 1, wherein, The flexible connector (100) is provided with shackles (110) at both ends, and the shackles (110) can be detachably connected to the buffer element (200), the beam or the pier.
9. A flexible energy-dissipating fall-protection device according to claim 8, wherein, At least one link (120) is also connected between the two shackles (110), and if the number of links (120) is greater than one, all the links (120) are connected in series.
10. A bridge structure, characterized by A flexible cushioning energy-dissipating fall prevention beam device comprising the flexible cushioning energy-dissipating fall prevention beam device of any one of claims 1-9.