Elastic energy dissipation beam falling prevention device
By using an elastic energy-dissipating anti-fall beam device in the bridge, and utilizing the deformation energy absorption mechanism of the steel wire rope triangular support structure and elastic components, the problem of insufficient buffer capacity of existing bridge limiting devices is solved. This achieves effective earthquake resistance and anti-fall beam effect for the bridge under earthquakes, improving the safety and reliability of the bridge.
Patent Information
- Application Number
- CN202423313701.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing bridge restraint devices are poor in terms of buffering capacity and energy dissipation performance, and cannot effectively reduce the collision of bridge components and beam collapse under earthquake action, resulting in a high risk of bridge structure damage during earthquakes.
An elastic energy-dissipating anti-fall beam device is adopted, which forms a triangular support structure by winding steel wire ropes. Combined with the deformation energy absorption mechanism of elastic components, it provides stable tensile force restriction and buffering capacity, absorbs seismic energy, and reduces the relative movement of bridge components.
It significantly improves the seismic performance of bridges, prevents beam detachment, reduces bridge structural damage, extends service life, enhances the stability and durability of the device, and reduces the difficulty of engineering construction and maintenance.
Smart Images
Figure CN223823991U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge building technical field especially relates to a elastic energy dissipation anti -falling beam device. BACKGROUND
[0002] In the related art, the bridge structure is usually provided with expansion joints to adapt to the deformation caused by environmental temperature, structural shrinkage, creep and the like. However, under the action of an earthquake, if the width of the expansion joint is insufficient or the displacement of the main beam is too large, the adjacent components of the bridge (such as between the beams or between the beam and the abutment) can collide, fall, and even cause the overall collapse. This phenomenon is particularly serious in earthquake disasters. As a transportation hub and lifeline project, the bridge is not only an important infrastructure for the economic and social development of the country, but also, once damaged, not only causes huge direct economic losses, but also hinders the disaster relief work in the disaster area, leading to further expansion of life and property losses, and increasing the difficulty of post-disaster reconstruction.
[0003] In order to reduce the catastrophic damage to the components such as piers and foundations caused by the huge inertial force of the superstructure of the bridge when an earthquake occurs, scholars from various countries have proposed various energy dissipation and seismic mitigation devices suitable for bridge structures for the purpose of energy dissipation. These devices usually start to work before or at the initial stage of the working state of the anti-falling beam limiting device, thereby effectively reducing the seismic response of the bridge.
[0004] At present, the coupling beam device, as a common energy dissipation and seismic mitigation device, is usually arranged at the beam end of the bridge connecting side span, connecting the main beam and the abutment, the main beam and the pier, and the beams. Common types of coupling beam devices include steel plate type, connecting rod type, high-strength steel rod type, and cable type. However, the existing limiting device, especially the seismic component widely used in China, generally has only a single seismic function and lacks sufficient buffering capacity, failing to fully play its role in the process of seismic mitigation. UTILITY MODEL CONTENT
[0005] The utility model discloses a kind of elastic energy dissipation anti-falling beam devices to improve the technical problem of poor buffering capacity of coupling beam device in the related art.
[0006] To solve the above problems, the utility model adopts the following technical solutions:
[0007] The utility model provides an elastic energy consumption anti-falling beam device, including mount, guide piece and elastic tight piece, a group of mount is equipped on the side wall of pier and the bottom wall of beam body respectively, the guide piece is equipped on the mount, the elastic tight piece is around the multiple guide pieces, and the elastic tight piece forms triangular support structure under the action of multiple guide pieces to correspond to the relative position of pier and beam body, wherein, in the natural state, the elastic tight piece is in the tight state, when the mount on the bottom wall of beam body gradually approaches or moves away from the mount on the side wall of pier under the influence of earthquake, the elastic tight piece is still in the tight state.
[0008] Preferably, the guide piece includes a guide shaft, the surface of the mount is spaced and symmetrically provided with an ear plate, and the guide shaft is rotatably arranged between the two ear plates. The guide shaft on the side wall of the pier is provided with a group, and the guide shaft on the bottom wall of the beam body is provided with two groups, and the two groups of guide shafts on the bottom wall of the beam body are symmetrically arranged. The elastic tight piece is sequentially arranged around the first group of guide shafts on the bottom wall of the beam body, the guide shafts on the side wall of the pier, and the second group of guide shafts on the bottom wall of the beam body, and the elastic tight piece is always in a tight state.
[0009] Preferably, the elastic tight piece includes a steel wire rope, the steel wire rope is arranged around multiple guide shafts and forms a triangular support structure, and both ends of the steel wire rope are limited to the mount on the bottom wall of the beam body.
[0010] Preferably, the elastic tight piece further includes an elastic part, the elastic part is arranged at the end of the steel wire rope and is always in a compressed state, wherein, in the case that the gap between the pier and the beam body decreases, the elastic part gradually releases and elongates to make the part of the steel wire rope arranged around the multiple guide shafts in a tight state; in the case that the gap between the pier and the beam body increases, the elastic part continues to compress and shorten to make the part of the steel wire rope arranged around the multiple guide shafts in a tight state.
[0011] Preferably, the mount is provided with a fixing frame, the end of the steel wire rope extends to the side of the fixing frame away from the corresponding guide shaft after passing through the fixing frame, the fixing frame is provided with a limiting plate, and the end of the steel wire rope is fixed to the limiting plate through a lock head.
[0012] Preferably, an expansion gap is formed between the limiting plate and the fixing frame, and the elastic part is connected in the expansion gap, wherein, in the case that the gap between the pier and the beam body decreases, the elastic part pushes the limiting plate to elastically deform outward to increase the width of the expansion gap; in the case that the gap between the pier and the beam body increases, the limiting plate elastically deforms inward to extrude the elastic part under the extrusion action of the end of the steel wire rope, and drives the elastic part to compress and shorten.
[0013] Preferably, the initial installation position of the limiting plate is the position where the elastic part is compressed, and when the bridge is in its natural state, the compression amount of the elastic part is half of the ultimate compression amount.
[0014] Preferably, the elastic part has an axially formed through hole, and the wire rope passes through the through hole and is connected to the lock head.
[0015] Preferably, the mounting component includes a mounting base and connecting bolts. The mounting base is attached to the side wall of the pier and the bottom wall of the beam. Multiple connecting bolts are threaded through the mounting base, and the other end of the connecting bolts is fixedly inserted into the side wall of the pier and the bottom wall of the beam.
[0016] Preferably, the piers and beams are provided with embedded parts, and the end of the connecting bolt away from the mounting seat is threadedly connected to the embedded part.
[0017] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0018] This patent provides an elastic energy-dissipating anti-fall beam device with excellent energy-absorbing and vibration-damping effects. Through the design of the elastic tension member always being in a taut state, it can continuously provide stable tensile force restriction regardless of changes in the relative displacement between the pier and the beam, significantly improving the bridge's seismic performance and preventing beam detachment. The device utilizes a triangular support structure formed by the winding of steel wire ropes, combined with the deformation energy absorption mechanism of the elastic part, to effectively absorb energy from external forces such as earthquakes, slowing down force transmission and reducing damage to the bridge structure. Furthermore, the device's guide component is rationally designed with a symmetrical arrangement along the guide axis, ensuring uniform stress on the steel wire ropes, further improving the system's stability and durability. The mounting components are firmly fixed to the embedded parts via connecting bolts and have good disassembly performance, making the device easy to install and maintain, reducing the difficulty of engineering construction and subsequent replacement. The multi-wire synchronous winding design enhances connection strength and fatigue resistance, ensuring the device maintains reliable function during long-term operation. The overall structure has high applicability, adaptable to different types of piers and beams without complex modifications, while reducing the degree of damage to the bridge under external forces and extending the bridge's service life. Through multiple deformation energy absorption mechanisms and a stable mechanical structure design, this patent achieves synergistic optimization of bridge beam anti-fall and energy dissipation and vibration reduction, providing comprehensive protection for the safe operation of bridges. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments 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.
[0020] Figure 1 This is an installation diagram of the elastic energy-dissipating anti-falling beam device according to some embodiments of this application;
[0021] Figure 2 This is a structural schematic diagram of an elastic energy-dissipating anti-falling beam device according to some embodiments of this application. Figure 1 ;
[0022] Figure 3 This is a structural schematic diagram of an elastic energy-dissipating anti-falling beam device according to some embodiments of this application. Figure 2 ;
[0023] Figure 4 This is a partial schematic diagram of an elastic energy-dissipating anti-falling beam device according to some embodiments of this application;
[0024] Figure 5 This is a partial schematic diagram illustrating the connection relationship between the wire rope and the elastic part in some embodiments of this application;
[0025] Figure 6 This is a partial schematic diagram illustrating the connection relationship between the wire rope and the lock head in some embodiments of this application;
[0026] Figure 7 This is a schematic diagram of the compressed state of the elastic part in some embodiments of this application;
[0027] Figure 8 This is a schematic diagram showing the state of the elastic part being released in some embodiments of this application.
[0028] In the picture:
[0029] 100. Mounting component; 110. Mounting base; 120. Connecting bolt;
[0030] 200, guide component; 210, guide shaft; 220, ear plate;
[0031] 300. Elastic tensioning element; 310. Steel wire rope; 320. Elastic part; 321. Perforation;
[0032] 400. Fixture;
[0033] 500. Limit plate; 510. Lock head;
[0034] 600. Expansion gap;
[0035] 700. Embedded parts. Detailed Implementation
[0036] 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.
[0037] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0038] In related technologies, bridges, as transportation hubs and lifeline projects, are important infrastructure for national economic and social development. Their operational safety is directly related to the normal operation of the national economy and the safety of people's lives and property. To adapt to bridge deformation caused by factors such as changes in environmental temperature, structural shrinkage, and creep, expansion joints are usually installed in bridge structures. These expansion joints can alleviate stress concentration caused by the above factors during daily operation, thus protecting the overall structure of the bridge.
[0039] However, bridge deformation under earthquake conditions exhibits characteristics drastically different from those under normal operating conditions. The vibrations triggered by an earthquake generate significant inertial forces in the bridge structure, particularly the massive inertial forces in the superstructure, which can cause catastrophic damage to piers and foundation components. In such cases, the width of expansion joints may be insufficient to absorb the deformation caused by seismic displacement, leading to severe collisions between adjacent bridge components (such as between beams or between beams and abutments), and even dangerous consequences such as beam collapse or complete collapse. Historical earthquake disasters have demonstrated that damage to bridges during an earthquake not only causes direct economic losses but also hinders rescue and recovery efforts in the disaster area, further increasing the loss of life and property and creating enormous difficulties for post-disaster reconstruction.
[0040] To cope with seismic forces, scholars from various countries have proposed a series of energy dissipation and vibration reduction devices suitable for bridge structures, primarily designed to absorb energy. These devices effectively reduce the seismic response of bridge structures by dissipating the vibrational energy caused by earthquakes. Especially when the anti-fall-beam limiting device is not yet in operation or has just begun to operate, these energy dissipation and vibration reduction devices can quickly take effect, thereby reducing the impact force of earthquakes and improving the overall seismic performance of the bridge.
[0041] Coupling beams are widely used energy dissipation and vibration reduction devices, typically installed at the ends of the beams in the side spans of bridges to connect the main beams to abutments, piers, and beams. Depending on their structural form, coupling beams can be classified into plate type, connecting rod type, high-strength steel bar type, and cable type. The design objective of coupling beams is to partially absorb or disperse seismic forces by providing connections and supports between components, thereby preventing uncontrolled displacement of bridge components.
[0042] Nevertheless, the limiting devices widely used in domestic bridges currently have significant limitations. These devices are mostly single seismic-resistant components with a single function, primarily preventing structural damage by limiting the relative displacement of components. However, these devices often lack effective buffering capacity and cannot adequately absorb the enormous inertial forces generated by earthquakes. Specifically:
[0043] 1. In the early stages of an earthquake, due to the lack of sufficient energy dissipation mechanisms, these limiting devices are unable to effectively mitigate the vibration and shock effects of earthquakes.
[0044] 2. Before the anti-fall beam limiting device starts working, the seismic response of the bridge cannot be controlled in time, which may lead to increased collisions between components, or even cause the bridge to fall or collapse.
[0045] Existing limiting devices mainly focus on preventing relative displacement of bridge components, but they fail to effectively solve the following problems:
[0046] 1. Under seismic loading, due to insufficient expansion joint width or excessive main beam displacement, component collisions or beam collapses may occur.
[0047] 2. The single seismic-resistant components currently in use lack sufficient buffering and energy dissipation capacity, and cannot effectively reduce the vibration response of bridges in the early stages of an earthquake, thereby increasing the risk of bridge structural damage.
[0048] In summary, there is an urgent need for a shock-absorbing and anti-falling beam device that can take effect rapidly under seismic loading, significantly reducing the seismic response of bridge components by enhancing buffering capacity and energy dissipation performance, thereby improving the seismic safety and reliability of bridges. Based on this, this application provides an elastic energy-dissipating anti-falling beam device.
[0049] The following is in conjunction with the appendixFigures 1 to 6 The present application provides a detailed description of an elastic energy-dissipating anti-falling beam device through specific embodiments and application scenarios.
[0050] like Figure 1 , Figure 2 As shown, the elastic energy-dissipating anti-fall beam device includes an installation component 100, a guide component 200, and an elastic tensioning component 300. The installation component 100 is provided on the side wall of the pier and the bottom wall of the beam, respectively, and the guide component 200 is provided on the installation component 100.
[0051] For example, the elastic tensioner 300 is wound around a plurality of guide members 200, and the elastic tensioner 300 forms a triangular support structure under the action of the plurality of guide members 200 to correspondingly define the relative position of the pier and the beam. In its natural state, the elastic tensioner 300 is in a taut state. For example, the natural state refers to the state of the bridge under the influence of an earthquake.
[0052] Furthermore, during an earthquake, as the mounting component 100 on the bottom wall of the beam gradually moves closer to or further away from the mounting component 100 on the side wall of the pier under the influence of the earthquake, the elastic tensioning component 300 remains taut. In other words, whether an earthquake occurs or not, the elastic tensioning component 300 remains taut, thus effectively limiting the relative position of the pier and the beam under different conditions.
[0053] Based on this, mounting components 100 are respectively installed on the side walls of the piers and the bottom walls of the beams. These mounting components 100 provide a stable foundation for the placement of the guide components 200, while ensuring that the elastic tensioning components 300 can operate within a reasonable spatial range. The guide components 200 are installed on the mounting components 100, and their design and arrangement aim to guide the elastic tensioning components 300 to form a stable triangular support structure between the guide components 200. The geometric stability of this triangular support structure enhances the restraining effect of the elastic tensioning components 300 on the relative position between the piers and the beams, and provides effective constraint force through the continuous tension of the elastic tensioning components 300.
[0054] Under natural conditions, the elastic tensioner 300 remains taut. This design allows the device to have a certain preload capacity even without external forces, maintaining the relative stability of the piers and the bridge beam under environmental stress. During an earthquake, the inertial force generated by the bridge superstructure causes the mounting components 100 on the bottom wall of the beam to gradually move closer to or further away from the mounting components 100 on the side walls of the piers. The elastic tensioner 300, under the guidance of the guide component 200, adapts to this dynamic change and remains taut. The continuous tautness of the elastic tensioner 300 not only absorbs some of the seismic energy and mitigates the bridge's seismic response, but also effectively buffers the relative movement between the beam and the pier through its elastic properties, thereby reducing the risk of collision between components and preventing beam collapse or overall collapse.
[0055] Therefore, the structural design and functional layout of the entire device ensure that it can exert stable seismic resistance and energy dissipation effects both before and after an earthquake, maintaining the safety and reliability of the bridge structure under both static and dynamic conditions. Through this technical approach, this application effectively overcomes the shortcomings of existing technologies, achieving the technical effects of enhancing the seismic performance of bridges and preventing beam collapse.
[0056] In some implementations, combined with Figure 2 , Figure 3 The guide member 200 includes a guide shaft 210, and the mounting member 100 has ear plates 220 spaced apart and symmetrically arranged on its surface. The guide shaft 210 is rotatably disposed between the two ear plates 220. For example, a pin hole for inserting the guide shaft 210 is provided on the ear plate 220, and an anti-disengagement ring is provided on the outer circumferential surface of the guide shaft 210 passing through the pin hole. The anti-disengagement ring can prevent the guide shaft 210 from disengaging from the pin hole, thereby ensuring to a certain extent that the guide shaft 210 can rotate between the two ear plates 220.
[0057] For example, one set of guide shafts 210 is provided on the side wall of the pier, and two sets of guide shafts 210 are provided on the bottom wall of the beam, and the two sets of guide shafts 210 on the bottom wall of the beam are symmetrically arranged; further, the elastic tension member 300 is sequentially wound around the first set of guide shafts 210 on the bottom wall of the beam, the guide shafts 210 on the side wall of the pier, and the second set of guide shafts 210 on the bottom wall of the beam, and the elastic tension member 300 is always in a taut state.
[0058] Based on this, the guide member 200 adopts the form of a guide shaft 210, and the guide shaft 210 achieves a stable rotational connection through the ear plate 220 set on the surface of the mounting member 100. This design not only improves the installation stability of the guide member 200, but also enhances the reliability of the winding path of the elastic tension member 300. In particular, the two sets of guide shafts 210 located on the bottom wall of the beam are symmetrically arranged, while only one set of guide shafts 210 is provided on the side wall of the pier. Through this distribution, the elastic tension member 300 can be wound sequentially between the first set of guide shafts 210, the guide shaft 210 on the side wall of the pier, and the second set of guide shafts 210 in an optimized path, forming a more uniform and stable mechanical structure.
[0059] Meanwhile, under the action of multiple sets of guide shafts 210, not only is the taut state of the elastic tensioner 300 maintained at all times, but also the uniform transmission of force is achieved through a reasonable path distribution, thereby further enhancing the relative positional constraint capability between the pier and the beam. Under seismic loading, this design can effectively disperse the load borne by the elastic tensioner 300, while enhancing its energy dissipation capacity and dynamic adaptability, reducing the relative displacement amplitude between the pier and the beam, and lowering the risk of collision and beam collapse. Through this structural improvement, the device achieves significant optimization in seismic performance, effectively compensating for the shortcomings of existing technologies and ensuring the stability and safety of the bridge structure under complex working conditions.
[0060] In some implementations, such as Figure 3 , Figure 4As shown, the elastic tensioning member 300 includes steel wire ropes 310, which are wound in multiple sets between multiple guide shafts 210 to form a triangular support structure. Both ends of the steel wire ropes 310 are fixed to the mounting members 100 on the bottom wall of the beam. For example, to increase the connection strength, multiple steel wire ropes 310 are simultaneously wound between multiple guide shafts 210. Thus, the elastic tensioning member 300 uses steel wire ropes 310 as the main material. The steel wire ropes 310 have high strength and excellent elastic recovery performance, effectively absorbing energy under seismic action and maintaining reliability for long-term use. The triangular support structure formed by the steel wire ropes 310 wound between multiple guide shafts 210 provides excellent impact resistance and deformation recovery under seismic action, further enhancing the restraint effect on the relative position between the piers and the beam. Furthermore, both ends of the wire rope 310 are fixed to the mounting pieces 100 on the bottom wall of the beam. This connection method ensures that the tension of the wire rope 310 is maintained stably, enhancing the mechanical performance of the entire device. To further improve the connection strength, multiple wire ropes 310 are simultaneously wound between multiple guide shafts 210, allowing the device to distribute the force during severe earthquakes and preventing failure due to overload of a single wire rope 310, thereby significantly improving the safety and durability of the device. This design, by optimizing the specific structure of the elastic tensioning member 300, overcomes the problem of insufficient strength of seismic-resistant components in existing technologies, providing a more reliable guarantee for the seismic resistance and disaster reduction of bridges.
[0061] In some implementations, combined with Figure 3 , Figure 4 The elastic tensioning member 300 also includes an elastic portion 320, which is located near the end of the wire rope 310 and is always in a compressed state. For example, when the gap between the pier and the beam decreases, the elastic portion 320 gradually releases and extends, keeping a portion of the wire rope 310 wound between the multiple guide shafts 210 in a taut state; for example, when the gap between the pier and the beam increases, the elastic portion 320 continues to compress and shorten, keeping a portion of the wire rope 310 wound between the multiple guide shafts 210 in a taut state. It is worth noting that the decrease or increase in the gap between the pier and the beam may be due to earthquakes or other external factors. A decrease in the gap indicates that the beam is gradually moving closer to the pier, while an increase in the gap indicates that the beam is gradually moving away from the pier.
[0062] With this configuration, the elastic portion 320 near the end of the wire rope 310 further enhances the device's adaptability to changes in the relative displacement between the pier and the beam, and ensures that the elastic tensioner 300 remains taut under various conditions. Specifically, the elastic portion 320 is always compressed and plays a crucial role in the process of changes in the gap between the pier and the beam. When the gap decreases, the elastic portion 320 gradually releases and elongates to compensate for changes in the length of the wire rope 310, thus keeping the wire rope 310 wound between the multiple guide shafts 210 taut. When the gap increases, the elastic portion 320 further compresses and shortens, allowing the wire rope 310 to adaptively elongate as the gap between the pier and the beam increases. This design achieves a dynamic response of the elastic tensioner 300 to changes in the relative position of the pier and the beam, avoiding the risk of the wire rope 310 losing its effectiveness due to gap changes under seismic action. Meanwhile, the elastic component 320 absorbs some energy through elastic deformation during dynamic adjustment, further reducing the impact force on the wire rope 310 and other components, and improving the energy dissipation capacity and durability of the entire device. Through the design of the shape and function of the elastic tensioning component 300, this device improves the flexibility to adapt to complex working conditions while ensuring seismic performance, providing a more comprehensive and reliable solution for the seismic protection of bridges.
[0063] In some implementations, combined with Figure 4 , Figure 5 and Figure 6 The mounting component 100 is provided with a fixing bracket 400. The end of the wire rope 310 passes through the fixing bracket 400 and extends to the side of the fixing bracket 400 away from the corresponding guide shaft 210. The fixing bracket 400 is provided with a limiting plate 500. The end of the wire rope 310 is fixed to the limiting plate 500 by a locking head 510. For example, an opening is provided on the limiting plate 500 for the wire rope 310 to pass through. After the wire rope 310 passes through the opening, the cooperation between the locking head 510 and the wire rope 310 makes the diameter of the end of the wire rope 310 after passing through the opening larger than the inner diameter of the opening. This makes it difficult for the wire rope 310 to detach from the limiting plate 500 through the opening under the restriction of the locking head 510, thereby improving the connection strength between the limiting plate 500 and the wire rope 310.
[0064] In some implementations, combined with Figure 4A telescopic gap 600 is formed between the limiting plate 500 and the fixing frame 400. An elastic part 320 is connected within the telescopic gap 600. When the gap between the pier and the beam decreases, the elastic part 320 pushes the limiting plate 500 outward to elastically deform, increasing the width of the telescopic gap 600. When the gap between the pier and the beam increases, the limiting plate 500 is subjected to compression from the end of the wire rope 310, causing it to elastically deform inward to compress the elastic part 320, thus shortening it. For example, the limiting plate 500 is a steel plate. Through the interaction between the elastic part 320 and the limiting plate 500 under different stress conditions, the wire rope 310 can adaptively lengthen or shorten under different stress conditions, but regardless of whether it lengthens or shortens, the wire rope 310 remains taut.
[0065] For example, the elastic part 320 is a polyurethane elastomer. Polyurethane has high strength, high elasticity and excellent wear resistance, and can withstand large dynamic loads, making it suitable for use in this device.
[0066] In some implementations, combined with Figure 7 , Figure 8 The initial installation position of the limiting plate 500 is the position where the elastic part 320 is compressed. When the bridge is in its natural state, the compression amount of the elastic part 320 is half of its ultimate compression amount. This setting ensures that the elastic part 320 is neither fully released nor fully compressed in the initial state, thus providing sufficient deformation margin to cope with various amplitude changes in the gap between the pier and the beam caused by an earthquake. When the gap decreases, the elastic part 320 further elongates to absorb energy by releasing; while when the gap increases, the elastic part 320 further compresses to buffer external forces. This bidirectional dynamic adjustment mechanism effectively improves the device's adaptability to gap changes and provides a more stable and efficient energy dissipation effect when the bridge structure is subjected to dynamic loads such as earthquakes. In addition, by pre-setting the compression amount in the natural state, this design can also avoid fatigue damage to the elastic part 320 caused by long-term stress, extend the service life of the device, and thus enhance the overall seismic reliability of the bridge.
[0067] In some implementations, reference is made to Figure 5 , Figure 6The elastic part 320 has an axially oriented through hole 321 through which the wire rope 310 passes and connects to the lock head 510. The wire rope 310 not only achieves an axial through-connection with the elastic part 320, but also effectively prevents deformation or displacement of the elastic part 320 due to lateral forces, thus ensuring the accuracy of axial movement of the elastic part 320 during compression or release. Furthermore, this structure can evenly distribute the tension of the wire rope 310 around the elastic part 320, reducing stress concentration caused by uneven force distribution and effectively extending the service life of the elastic part 320. In actual operation, when the gap between the pier and the beam changes, the elastic part 320 can respond flexibly under force while maintaining the tautness of the wire rope 310, thereby further enhancing the energy dissipation capacity and seismic performance of the device.
[0068] In some implementations, such as Figure 1 , Figure 2 As shown, the mounting component 100 includes a mounting base 110 and connecting bolts 120. The mounting base 110 is attached to the side wall of the pier and the bottom wall of the beam. Multiple connecting bolts 120 are threaded through the mounting base 110, and the other end of the connecting bolts 120 is fixedly inserted into the side wall of the pier and the bottom wall of the beam. For example, the pier and beam are provided with embedded parts 700, and the end of the connecting bolts 120 away from the mounting base 110 is threadedly connected to the embedded parts 700.
[0069] This configuration ensures a robust connection and reliable load-bearing capacity for the device during operation. Furthermore, the threaded connection between the connecting bolts and the mounting base, as well as the threaded connection between the distal ends of the connecting bolts and the embedded parts within the piers and beams, further enhances the reliability of the mounting components and provides high-strength connection while also granting the device significant detachability. This design allows for easy and rapid separation of the mounting base by removing the bolts when replacement or adjustment is needed, eliminating the need for destructive operations on the piers and beams. This not only significantly reduces the difficulty and cost of later maintenance and replacement but also ensures the integrity and safety of the bridge structure. In addition, the embedded parts ensure a more stable connection between the mounting base and the piers and beams, enabling it to withstand larger dynamic loads and seismic impacts, thereby improving the overall reliability and service life of the device. Therefore, this mounting base design fully demonstrates the applicability, convenience, and durability of the device in practical engineering applications.
[0070] 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.
[0071] Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
[0072] 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, It includes an installation component (100), a guide component (200), and an elastic tensioning component (300). The installation component (100) is provided on the side wall of the pier and the bottom wall of the beam, respectively. The guide component (200) is provided on the installation component (100). The elastic tensioning member (300) is wound around the plurality of guide members (200), and the elastic tensioning member (300) forms a triangular support structure under the action of the plurality of guide members (200) to correspondingly define the relative position of the pier and the beam. In its natural state, the elastic tensioner (300) is in a taut state; When the mounting component (100) located on the bottom wall of the beam gradually moves closer to or further away from the mounting component (100) on the side wall of the pier under the influence of an earthquake, the elastic tensioning component (300) remains in a taut state.
2. The elastic energy-dissipating anti-falling beam device according to claim 1, characterized in that, The guide member (200) includes a guide shaft (210), and the surface of the mounting member (100) is provided with ear plates (220) spaced apart and symmetrically arranged. The guide shaft (210) is rotatably disposed between the two ear plates (220). One set of guide shafts (210) is provided on the side wall of the pier, and two sets of guide shafts (210) are provided on the bottom wall of the beam, with the two sets of guide shafts (210) on the bottom wall of the beam arranged symmetrically; wherein, The elastic tensioning member (300) is sequentially wound around the first set of guide shafts (210) on the bottom wall of the beam, the guide shafts (210) on the side wall of the pier, and the second set of guide shafts (210) on the bottom wall of the beam, and the elastic tensioning member (300) is always in a taut state.
3. The elastic energy-dissipating anti-falling beam device according to claim 2, characterized in that, The elastic tensioning member (300) includes a steel wire rope (310), which is wound in multiple sets between multiple guide shafts (210) to form a triangular support structure. Both ends of the steel wire rope (310) are limited to the mounting parts (100) on the bottom wall of the beam.
4. The elastic energy-dissipating anti-falling beam device according to claim 3, characterized in that, The elastic tensioning element (300) further includes an elastic portion (320), which is located near the end of the wire rope (310) and is always in a compressed state. When the gap between the pier and the beam decreases, the elastic part (320) gradually releases and extends so that part of the wire rope (310) wound between multiple guide shafts (210) is in a taut state; As the gap between the pier and the beam increases, the elastic part (320) continues to compress and then shorten, so that part of the wire rope (310) wound between multiple guide shafts (210) is in a taut state.
5. The elastic energy-dissipating anti-falling beam device according to claim 4, characterized in that, The mounting component (100) is provided with a fixing frame (400). The end of the wire rope (310) passes through the fixing frame (400) and extends to the side of the fixing frame (400) away from the corresponding guide shaft (210). The fixing frame (400) is provided with a limiting plate (500). The end of the wire rope (310) is fixed to the limiting plate (500) by a lock head (510).
6. The elastic energy-dissipating anti-falling beam device according to claim 5, characterized in that, A telescopic gap (600) is formed between the limiting plate (500) and the fixing frame (400), and the elastic part (320) is connected within the telescopic gap (600). When the gap between the pier and the beam decreases, the elastic part (320) pushes the limiting plate (500) to deform outward to increase the width of the expansion gap (600); when the gap between the pier and the beam increases, the limiting plate (500) is squeezed inward by the end of the wire rope (310) to squeeze the elastic part (320) and drive the elastic part (320) to compress and shorten.
7. The elastic energy-dissipating anti-falling beam device according to claim 6, characterized in that, The initial installation position of the limiting plate (500) is the position where the elastic part (320) is compressed. When the bridge is in its natural state, the compression amount of the elastic part (320) is half of the ultimate compression amount.
8. The elastic energy-dissipating anti-falling beam device according to claim 6, characterized in that, The elastic part (320) has an axially formed through hole (321), and the wire rope (310) passes through the through hole (321) and is connected to the lock head (510).
9. The elastic energy-dissipating anti-falling beam device according to any one of claims 1-8, characterized in that, The mounting component (100) includes a mounting base (110) and connecting bolts (120). The mounting base (110) is attached to the side wall of the pier and the bottom wall of the beam. Multiple connecting bolts (120) are threaded through the mounting base (110), and the other end of the connecting bolts (120) is fixedly inserted into the side wall of the pier and the bottom wall of the beam.
10. The elastic energy-dissipating anti-falling beam device according to claim 9, characterized in that, The bridge pier and beam are provided with embedded parts (700), and the end of the connecting bolt (120) away from the mounting seat (110) is threadedly connected to the embedded part (700).