Buffering energy consumption structure and cable anti-beam-falling device

Abstract

The application provides a buffer energy dissipation structure and a cable anti-falling beam device, and belongs to the field of bridge engineering, so as to avoid falling beam damage of a bridge under the action of an earthquake. The buffer energy dissipation structure is composed of a compression device, a first limiting plate, a first elastic buffer element, a second elastic buffer element, a second limiting plate and a supporting bottom plate. When a strong impact such as an earthquake occurs, under the action of cable force, the first elastic buffer element collides with the second elastic buffer element, sliding friction energy dissipation occurs between the two, and external impact energy is consumed. At the same time, the buffer layer in the second elastic buffer element is elastically deformed during extrusion of the inner and outer ring layers, so as to provide a buffering effect for the structure. The cable anti-falling beam device adopting the buffer energy dissipation structure has the advantages of strong buffering capacity, reliable performance and the like, can be designed according to different seismic fortification requirements, has a simple structure, and can effectively guarantee the safety of a bridge structure.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge engineering, and in particular relates to a buffer energy dissipation structure and a cable-stayed anti-falling beam device. Background Technology

[0002] Bridges are lifelines for earthquake relief and rescue efforts, and their structural safety is directly related to the lives and property of the general public. Therefore, it is crucial to ensure that bridge structures maintain their basic functions after an earthquake, providing rescue teams with access routes. Installing anti-falling beam devices on bridges is one of the important measures to ensure bridge structural safety. Currently, the most widely used type in my country is the cable-stayed anti-falling beam device, which has advantages such as high output and structural stability. However, during strong earthquakes, in addition to sufficient output, anti-falling beam devices also need sufficient buffering and energy dissipation capacity to offset the damage to the bridge structure caused by the seismic shockwave. Therefore, improvements are needed to enhance the buffering and energy dissipation capacity of anti-falling beam devices. Summary of the Invention

[0003] To address the technical problems existing in the background art, the present invention provides a buffer energy dissipation structure and a cable-stayed anti-fall beam device.

[0004] This invention adopts the following technical solution: a buffer energy dissipation structure, comprising:

[0005] A supporting base plate has a buffer surface; a second limiting plate is fixed on the buffer surface.

[0006] A buffer assembly is provided at one end on the second limiting plate; the buffer assembly deforms and consumes sliding friction energy under the action of external force.

[0007] A first limiting plate is located at the other end of the buffer assembly;

[0008] The compression component is located on the first limiting plate and is positioned opposite to the buffer component; the supporting base plate, the second limiting plate, the buffer component, the first limiting plate, and the compression component are coaxially arranged, and the axis is a through structure.

[0009] In a further implementation, the buffer component includes:

[0010] The first elastic buffer element has one end face connected to the first limiting plate;

[0011] The second elastic buffer element has one end face tightly fitted onto the first elastic buffer element, and the other end face connected to the second limiting plate.

[0012] In a further implementation, the compression component is an internally hollowed-out compression spring or elastic pressure block.

[0013] In a further implementation, the first elastic buffer element has a cylindrical or inverted frustum shape and is provided with a through hole along the axial direction.

[0014] In a further implementation, the second elastic buffer element and / or the first elastic buffer element is a sandwich structure with a reserved cavity, the outer wall of which is wrapped with an inner ring layer, a first buffer layer and an outer ring layer from the inside to the outside; the first elastic buffer element slides within the inner wall of the inner ring layer of the second elastic buffer element by sliding friction.

[0015] In a further implementation, the first elastic buffer element, the inner ring layer, and the outer ring layer are made of one or more of aluminum alloy or steel.

[0016] In a further implementation, the first buffer layer is made of a material with buffering and energy dissipation functions, such as rubber, engineering plastics, polyurethane, or foamed metal.

[0017] In further implementation, the first buffer layer of the second elastic buffer element can be connected and fixed to the inner and outer ring layers by integral vulcanization, bonding, or fitting.

[0018] In a further implementation, the second elastic cushioning element also includes a second cushioning layer, the top of which is tightly bonded to the bottom of the inner ring layer by vulcanization and bonding, and is connected to the first cushioning layer.

[0019] A cable-stayed beam anti-fall device, comprising:

[0020] The mounting base has an axial through hole inside; the mounting base is configured to be fixed to the solid.

[0021] A buffer energy dissipation structure is installed on the outer wall of the mounting base; the buffer energy dissipation structure is as described above;

[0022] The cable passes axially through the corresponding mounting base and the energy-dissipating buffer structure on the mounting base; both ends of the cable are fixed by anchor sleeves and lock nuts to limit the compression assembly.

[0023] The beneficial effects of this invention are: 1. Under the action of the cable force, relative slippage occurs between the elastic buffer elements. The displacement distance is long and the contact area is large. Sliding friction will be generated on the contact surface to dissipate energy, resulting in strong energy dissipation capacity.

[0024] 2. The second elastic buffer element is a sandwich structure. When the internal energy-consuming component is squeezed, the middle first buffer layer undergoes elastic deformation. The excess deformation is squeezed into the cavity, ensuring the stiffness and stability of the first buffer layer, so that it can give full play to its buffering function and has strong buffering capacity.

[0025] 3. The buffer energy dissipation structure has pre-set through holes inside, allowing the cables to move freely without jamming or wear, ensuring that the cables can fully exert their mechanical properties and thus guaranteeing the safety of the anti-fall beam device.

[0026] 4. The buffer energy dissipation structure is simple in composition, and the elastic buffer element is easy to replace after it has fully exerted its buffer energy dissipation capacity, which has broad prospects for engineering applications. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a buffer energy dissipation structure in this invention;

[0028] Figure 2 This is a cross-sectional view of a buffer energy dissipation structure in this invention;

[0029] Figure 3 This is a schematic diagram of the structure of the first elastic buffer element in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of the second elastic buffer element in this invention;

[0031] Figure 5 This is a schematic diagram of the structure of the first limiting plate in this invention;

[0032] Figure 6 This is a schematic diagram of the structure of the second limiting plate in this invention;

[0033] Figure 7 This is a schematic diagram of the supporting base plate in this invention;

[0034] Figure 8 This is a schematic diagram of the compression component in this invention;

[0035] Figure 9 This is a schematic diagram of the buffer energy dissipation structure and the cable anti-fall beam device composed therefrom in Embodiment 1 of the present invention, using a beam-beam connection.

[0036] Figure 10 This is a schematic diagram of the improved second elastic buffer element in Embodiment 2 of the present invention;

[0037] Figure 11 This is a schematic diagram of the first elastic buffer element with a sandwich structure in Embodiment 3 of the present invention;

[0038] Figure 12 This is a schematic diagram of the first elastic buffer element with a sandwich structure installed in the anti-fall beam device in Embodiment 3 of the present invention;

[0039] Figure 13 This is a schematic diagram of the pier-beam connection of the buffer energy dissipation structure and the cable anti-fall beam device composed of it in Embodiment 4 of the present invention.

[0040] Figures 1 to 13 The components are labeled as follows: 1. Buffer energy dissipation structure; 2. Cable; 3. Anchor sleeve; 4. Fastening nut; 5. Beam; 6. Support; 7. Pier; 11. Compression assembly; 12. First limiting plate; 13. First elastic buffer element; 14. Second elastic buffer element; 15. Second limiting plate; 16. Support base plate; 131. Inner ring layer; 132. First buffer layer; 133. Outer ring layer; 134. Reserved cavity; 135. Second buffer layer. Detailed Implementation

[0041] Example 1

[0042] like Figures 1 to 8 As shown, each buffer energy dissipation structure 1 includes: a support base plate 16, a second limiting plate 15, a buffer assembly, a first limiting plate 12, and a compression assembly 11. The connection relationship of the above components is as follows:

[0043] The supporting base plate 16 has a buffer surface, and the second limiting plate 15 is fixed to the buffer surface. The buffer assembly is installed on the second limiting plate 15, which is opposite to the supporting base plate 16. It should be noted that the buffer assembly in this embodiment deforms and experiences sliding friction energy loss under the action of external force. Correspondingly, the first limiting plate 12 is fixed to the other end of the buffer assembly. A compression assembly 11 is also provided on the first limiting plate 12, wherein the compression assembly 11 and the buffer assembly are opposite to the first limiting plate 12. For ease of use later, the supporting base plate 16, the second limiting plate 15, the buffer assembly, the first limiting plate 12, and the compression assembly 11 are coaxially arranged, and the axis is a through structure, providing space for the cable 2 to operate.

[0044] During operation, the pressure generated by the cable 2 is transmitted to the corresponding energy-consuming structure; the first limiting plate 12 is connected to the compression component 11 to ensure that the compression component 11 does not shift; the buffer component is the main energy-consuming component, and the second limiting plate 15 is connected to the buffer component to prevent the buffer component from shifting; the support base plate 16 is connected to the second limiting plate 15, and the support base plate 16 is used to connect to the beam 5 to provide strong support for the buffer energy-consuming structure 1.

[0045] As the main energy-consuming component in this embodiment, the buffer assembly includes a first elastic buffer element 13 and a second elastic buffer element 14. One end face of the first elastic buffer element is connected to the first limiting plate 12, and the other end face is embedded within one end face of the second elastic buffer element 14. The other end face of the corresponding second elastic buffer element is connected to the second limiting plate 15. In other words, the outer contour of the first elastic buffer element 13 is tightly fitted with the inner contour of the second elastic buffer element 14. The first elastic buffer element 13 can slide within the inner wall of the inner ring layer 131 of the second elastic buffer element 14 through sliding friction.

[0046] For the above connection relationship, such as Figure 3 As shown, the first elastic buffer element 13 has a cylindrical or inverted frustum shape and a through hole along the axial direction, taking a compression spring as an example. The first elastic buffer element 13, the inner ring layer 131, and the outer ring layer 133 are made of one or more of aluminum alloy or steel.

[0047] like Figure 4 As shown, the second elastic buffer element 14 is a sandwich structure with a reserved cavity 134. The outer wall of the reserved cavity 134 is wrapped with an inner ring layer 131, a first buffer layer 132, and an outer ring layer 133 from the inside to the outside. The first elastic buffer element 13 slides within the inner wall of the inner ring layer 131 of the second elastic buffer element 14 through sliding friction. In other words, the inner ring layer 131, the first buffer layer 132, and the outer ring layer 133 are tightly fitted together, and the reserved cavity 134 provides deformation space for the first buffer layer 132. In a further embodiment, the first buffer layer 132 of the second elastic buffer element 14 can be connected and fixed to the inner ring layer 131 and the outer ring layer 133 by integral vulcanization, bonding, or fitting.

[0048] In further implementation, the first buffer layer 132 is made of a material with buffering and energy dissipation functions, such as rubber, engineering plastics, polyurethane, or foamed metal.

[0049] The first elastic buffer element 13, the inner ring layer 131 and the outer ring layer 133 are made of one or more of aluminum alloy or steel.

[0050] Based on the above description, a cable 2 anti-fall beam device includes: a mounting base with an axial through hole inside; the mounting base is configured to be fixed on a solid, such as a beam 5 or a support 6.

[0051] A buffer energy dissipation structure 1 is installed on the outer wall of the mounting base; the buffer energy dissipation structure 1 is as described above;

[0052] The cable 2 passes axially through the corresponding mounting base and the buffer energy dissipation structure 1 on the mounting base; both ends of the cable 2 are fixed by the anchor sleeve 3 and the locking nut to limit the compression component 11.

[0053] like Figure 9As shown, when an earthquake occurs, relative displacement occurs between the beams 5, causing the cable 2 to be in a taut state. At this time, the tension of the cable 2 drives the anchor sleeve 3 and the fastening nut 4 to compress the energy-dissipating buffer structure 1, enabling it to perform its energy-dissipating buffer function. Its working principle is that the compression component 11 and the first limiting plate 12 transmit pressure to the first elastic buffer element 13, forcing the first elastic buffer element 13 to be pressed into the second elastic buffer element 14. During the movement of the first elastic buffer element 13 within the second elastic buffer element 14, the outer wall of the first elastic buffer element 13 and the inner ring layer 131 of the second elastic buffer element 14 undergo sliding friction to dissipate energy. Simultaneously, the first buffer layer 132 is also forced to deform under compression. Due to its sufficient elastic deformation capacity, it can reduce the stress on the inner ring layer 131 and the outer ring layer 133, providing a buffering function for the energy-dissipating structure. The cavity at the bottom of the second elastic buffer element 14 allows for the free deformation of the first buffer layer 132, thereby ensuring the buffering capacity of the first buffer layer 132. During the compression process of the buffer energy dissipation structure 1, the second limiting plate 15 and the supporting base plate 16 can ensure the movement direction of the structure and provide sufficient support force, so that the buffer energy dissipation capacity of the buffer energy dissipation structure 1 can be fully utilized, thereby improving the load-bearing performance of the entire anti-fall beam device and ensuring the safety of the bridge structure.

[0054] Example 2

[0055] like Figure 10 As shown, this embodiment differs from Embodiment 1. A second buffer layer 135 is added inside the second elastic buffer element 14. The top of the second buffer layer 135 is tightly bonded to the bottom of the inner ring layer 131 through vulcanization and bonding, and simultaneously connects to the first buffer layer 132. When the anti-fall beam device is in operation, the inner ring layer 131 of the second elastic buffer element 14 compresses the outer first buffer layer 132 and the second buffer layer 135, providing a dual buffering effect and excellent buffering performance.

[0056] Example 3

[0057] like Figure 11 , 12 As shown, this embodiment differs from embodiments 1 and 2 in that the first elastic buffer element 13 adopts a sandwich structure, consisting of four parts: an inner ring layer 131, a first buffer layer 132, an outer ring layer 133, and a reserved cavity 134. The inner ring layer 131, the first buffer layer 132, and the outer ring layer 133 are tightly fitted together, and the reserved cavity 134 provides deformation space for the buffer layer. When the anti-fall beam device is in operation, both the first elastic buffer element 13 and the second elastic buffer element 14 can optimize the structural output through their respective first buffer layers 132, resulting in a more significant buffering effect.

[0058] Example 4

[0059] like Figure 13As shown, this embodiment differs from embodiments 1, 2, and 3 in that the buffer energy dissipation structure 1 and the cable 2 anti-falling beam device composed of it are installed at the bottom of the bridge, with one end connected to the bottom of the beam 5 and the other end connected to the pier 7. When an earthquake occurs, relative displacement occurs between the beams 5, causing the cable 2 to be in a taut state. At this time, the tension of the cable 2 drives the anchor sleeve 3 and the fastening nut 4 to compress the buffer energy dissipation device, enabling it to perform its buffer energy dissipation function.

[0060] Its working principle is as follows: the compression component 11 and the first limiting plate 12 transmit pressure to the first elastic buffer element 13, forcing the first elastic buffer element 13 into the second elastic buffer element 14. During the movement of the first elastic buffer element 13 within the second elastic buffer element 14, the outer wall of the first elastic buffer element 13 and the inner ring layer 131 of the second elastic buffer element 14 undergo sliding friction to dissipate energy. At the same time, the first buffer layer 132 is also forced to undergo compression deformation. Due to its sufficient elastic deformation capacity, it can improve the stress on the inner ring layer 131 and the outer ring layer 133, providing a buffering function for the energy dissipation structure. The cavity at the bottom of the second elastic buffer element 14 can ensure the free deformation of the first buffer layer 132, thereby ensuring the buffering capacity of the first buffer layer 132. During the compression process of the buffer energy dissipation structure 1, the second limiting plate 15 and the supporting base plate 16 can ensure the movement orientation of the structure and provide sufficient support force, so that the buffer energy dissipation capacity of the buffer energy dissipation structure 1 can be fully utilized, thereby improving the load-bearing performance of the entire anti-falling beam device and ensuring the safety of the bridge structure.

[0061] The above description is only a preferred embodiment of the present invention, but the application of the present invention is not limited thereto. The application object can be transformed and modified within a reasonable range, and all such transformations and modifications will fall within the protection scope of the present invention.

Claims

1. A buffer energy dissipation structure, characterized in that, include: A supporting base plate has a buffer surface; a second limiting plate is fixed on the buffer surface. A buffer assembly, one end of which is disposed on the second limiting plate; The buffer assembly deforms and experiences sliding friction energy loss under the action of external force; the buffer assembly includes: The first elastic buffer element has one end face connected to the first limiting plate; The second elastic buffer element has one end face tightly fitted onto the first elastic buffer element, and the other end face connected to the second limiting plate; The first elastic buffer element has a cylindrical or inverted frustum shape and is provided with a through hole along the axial direction; The second elastic buffer element and the first elastic buffer element are sandwich structures with reserved cavities. The outer wall of the reserved cavity is wrapped with an inner ring layer, a first buffer layer and an outer ring layer from the inside to the outside. The first elastic buffer element slides within the inner wall of the inner ring layer of the second elastic buffer element by sliding friction. The inner and outer rings of the first elastic buffer element are made of one or more of aluminum alloy or steel; the first buffer layer is made of rubber, engineering plastic, polyurethane, or foamed metal, which have buffering and energy dissipation functions. The second elastic buffer element is made of the same material as the first elastic buffer element; A first limiting plate is located at the other end of the buffer assembly; The compression component is located on the first limiting plate and is positioned opposite to the buffer component; the supporting base plate, the second limiting plate, the buffer component, the first limiting plate, and the compression component are coaxially arranged, and the axis is a through structure.

2. The buffer energy dissipation structure according to claim 1, characterized in that, The compression component is an internally hollowed-out compression spring or elastic pressure block.

3. The buffer energy dissipation structure according to claim 1, characterized in that, The first buffer layer of the second elastic buffer element is connected and fixed to the inner and outer ring layers by integral vulcanization, bonding, or fitting.

4. The buffer energy dissipation structure according to claim 1, characterized in that, The second elastic cushioning element also includes a second cushioning layer, the top of which is tightly bonded to the bottom of the inner ring layer by vulcanization and bonding.

5. A cable-stayed anti-falling beam device, characterized in that, include: The mounting base has an axial through hole inside; the mounting base is configured to be fixed to the solid. A buffer energy dissipation structure is installed on the outer side wall of the mounting base; the buffer energy dissipation structure is as described in any one of claims 1 to 4; The cable passes axially through the corresponding mounting base and the energy-dissipating buffer structure on the mounting base; both ends of the cable are fixed by anchor sleeves and lock nuts to limit the compression assembly.

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