A new type of steel structure seismic stop block

Abstract

This invention proposes a novel steel structure seismic-resistant block, fixedly installed at the bottom of a steel box girder and on the inner side of the pier support. It includes a damping plate and a stiffening plate. The damping plate is fixedly mounted on a fixed frame composed of stiffening plates, facing the pier support. The fixed frame is fixedly mounted at the bottom of the steel box girder. The damping plate includes a plate bearing and evenly distributed nails on the plate bearing. Both the plate bearing and the nails are made of neoprene rubber. This invention achieves its damping function by using a neoprene rubber damping plate instead of the original elastic structure. It serves as a primary energy-dissipating structure, with a stiffening plate behind the damping plate acting as a secondary energy-dissipating structure. This multi-layered energy-dissipating structure results in better overall damping performance, effectively absorbing and attenuating vibrations, and reducing the impact of lateral slippage of the superstructure on the pier.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a novel steel structure seismic-resistant stop block. Background Technology

[0002] In modern bridge engineering and various building structures, seismic design remains a core element in ensuring structural safety and stability. Traditional seismic blocks primarily limit structural displacement through rigid blocking when responding to seismic forces. However, this rigid seismic approach has significant drawbacks. Due to the lack of effective buffering and damping mechanisms, under strong earthquakes, the enormous seismic impact force acts directly between the block and the protected structure, making it difficult for the block and connected structural components to withstand the load and unable to continuously and effectively perform their seismic resistance function. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes a new type of steel structure seismic block, which has excellent shock absorption performance, can adapt to various complex working conditions such as high temperature, low temperature, and high humidity, and maintains stable performance during long-term use, providing a more reliable and efficient solution for structural seismic resistance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a new type of steel structure seismic blocking block, which is fixedly installed on the bottom of the steel box girder and based on the inner side of the pier support, including a damping plate and a stiffening plate. The damping plate is fixedly installed on a fixed frame composed of the stiffening plate facing the pier support. The fixed frame is fixedly installed on the bottom of the steel box girder.

[0005] The damping plate includes a plate support and nails evenly arranged on the plate support. Both the plate support and the nails are made of neoprene rubber.

[0006] Furthermore, the plate support has a height of 30mm, the top diameter of the nail body is 30mm, the bottom diameter is 40mm, the height is 50mm, and the spacing between adjacent nail bodies is 50mm.

[0007] Furthermore, the damping plate is bonded to the fixed frame with epoxy resin on the side facing the pier support.

[0008] Furthermore, one side of the damping plate contacts the bottom of the steel box girder, while the other side extends and is fixed to the side of the pier.

[0009] Furthermore, the fixed frame includes a first vertical segment, a second vertical segment, a horizontal segment, and an inclined segment;

[0010] The first vertical segment is fixed as a whole with the damping plate and is vertically fixed to the bottom of the steel box girder based on the side close to the pier. The second vertical segment is vertically fixed to the bottom of the steel box girder based on the side away from the pier, and the length of the second vertical segment is less than the length of the first vertical segment.

[0011] One end of the horizontal segment is smoothly connected to one end of the inclined segment, the other end of the horizontal segment is connected to the lower end of the first vertical segment, and the other end of the inclined segment is connected to the lower end of the second vertical segment.

[0012] Furthermore, the length of the plate support is less than the length of the first vertical segment, and the plate support is fixed to the lower section of the first vertical segment by bolts.

[0013] Furthermore, a wedge-shaped pad is also provided between the bottom of the steel box girder and the pier support.

[0014] Compared with the prior art, the beneficial effects of this utility model include: by using a neoprene rubber shock-absorbing plate to replace the original elastic structure to complete the shock absorption function, and setting a stiffening plate behind the shock-absorbing plate as a secondary energy-absorbing structure, the multi-layered energy-absorbing structure makes the whole structure have better shock absorption performance, effectively absorbs and attenuates vibrations, and reduces the impact force of the lateral sliding of the superstructure on the bridge pier; and the neoprene rubber shock-absorbing plate has extremely high adaptability to temperature changes, while also having excellent water resistance and anti-aging ability, maintaining a stable and reliable shock absorption effect under long-term and frequent earthquake impacts, providing long-lasting seismic protection for the structure. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0016] Figure 1 A schematic cross-sectional view of the bridge structure is shown.

[0017] Figure 2 The schematic diagram shows the cross-sectional structure of the seismic retaining block;

[0018] Figure 3 The diagram illustrates the assembly of the damping plate and the fixed frame.

[0019] Figure 4 The schematic diagram shows the overall structure of the damping plate.

[0020] Numbering in the diagram: 1-Steel box girder, 2-Pier, 3-Pier support, 4-Wedge pad, 5-Damping plate, 51-Plate support, 52-Nail body, 6-Stiffening plate, 7-Fixed frame, 71-First vertical section, 72-Second vertical section, 73-Horizontal section, 74-Inclined section. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Figure 1 A schematic cross-sectional view of the bridge structure is shown, such as Figure 1 As shown, a new type of steel structure seismic block is fixedly installed at the bottom of the steel box girder 1 and on the inner side of the pier support 3. It is used to undertake important functions such as preventing the beam from falling, increasing structural stability, buffering and damping, adapting to different engineering needs, and enhancing seismic resistance, so as to ensure the safety and stability of the bridge structure under extreme conditions such as earthquakes. Figure 2 The schematic diagram shows the cross-sectional structure of the seismic retaining block. Figure 3 The schematic diagram illustrates the assembly of the damping plate and the fixed frame, such as... Figure 2 and Figure 3 As shown, a wedge-shaped pad 4 is also provided between the bottom of the aforementioned steel box girder 1 and the pier support 3. The seismic block includes a damping plate 5 and a stiffening plate 6. The damping plate 5 is fixedly mounted on a fixed frame 7 composed of the aforementioned stiffening plates 6, facing the pier support 3. The fixed frame 7 is fixedly mounted on the bottom of the steel box girder 1 and can be fixed to the bottom of the steel box girder 1 by means of bolts or by welding. In other embodiments, the fixed frame 7 can also be integrally formed with the steel box girder 1 connected to it, so that the fixed frame 7 and the steel box girder 1 can be combined into one unit.

[0023] like Figure 3As shown, the aforementioned fixed frame 7 is rigidly fixed to the bottom of the steel box girder 1, providing conditions for the installation of the damping plate 5. The damping plate 5 is fixedly installed facing the pier support 3. To meet the functional requirements of buffering and damping, the damping plate 5 needs to have a certain degree of elasticity or a soft structure to provide buffering between the fixed frame 7 and the pier 2. As a primary energy dissipation structure, the damping plate 5 provides buffering while the fixed frame 7 blocks the lateral displacement tendency of the steel box girder 1. The aforementioned fixed frame 7 serves as a secondary energy dissipation structure, thereby achieving the effect of seismic resistance and damping, effectively preventing the beam from falling off. In some embodiments, a damping device can also be added between the damping plate 5 and the fixed frame 7 as an energy dissipation structure to further enhance the seismic resistance and damping effect of the seismic block.

[0024] Figure 4 The schematic diagram shows the overall structure of the damping plate, such as Figure 4 As shown, the aforementioned damping plate 5 includes a plate support 51 and nails 52 evenly arranged on the plate support 51. Both the plate support 51 and the nails 52 are made of neoprene rubber. Regarding the nails 52 arranged on the plate support 51, they can be arranged evenly along the length and width of the plate support 51, meaning that the number and spacing of each row of nails 52 are the same along the width of the plate support 51. In other embodiments, the nails 52 can also be arranged evenly on the plate support 51, the difference being that the number of adjacent rows of nails 52 is different along the width of the plate support 51, while the spacing is the same. That is, the next row of nails 52 is arranged according to the middle gap area of ​​the previous row of nails 52, while the spacing and number between two adjacent rows of nails 52 are the same.

[0025] The aforementioned plate support 51 has a height of 30mm, the top diameter of the nail body 52 is 30mm, the bottom diameter is 40mm, and the height is 50mm. The spacing between adjacent nail bodies 52 is 50mm. The dimensions of the nail body 52 and the plate support 51, as well as the spacing between adjacent nail bodies 52, can be adjusted according to actual mechanical requirements. That is, when higher mechanical requirements are required, the height of the nail body 52 and the spacing between nail bodies 52 can be shortened, and the top and bottom diameters of the nail body 52 can be adjusted accordingly.

[0026] like Figure 2As shown, the aforementioned damping plate 5 is bonded to the side of the fixing frame 7 facing the pier support 3 with epoxy resin. One side of the damping plate 5 is in contact with the bottom of the steel box girder 1, and the other side extends and is fixed to the side of the pier 2. After the fixing frame 7 provides the fixing conditions for the damping plate 5, the damping plate 5 is placed facing the side of the pier 2 to provide elastic support to the side of the pier support 3. The fixed frame 7, which provides support for the damping plate 5, includes a first vertical section 71, a second vertical section 72, a horizontal section 73, and an inclined section 74. The first vertical section 71 is fixed integrally with the damping plate 5 and is vertically fixed to the bottom of the steel box girder 1 on the side closest to the pier 2. The second vertical section 72 is vertically fixed to the bottom of the steel box girder 1 on the side away from the pier 2, and the length of the second vertical section 72 is less than the length of the first vertical section 71. The horizontal distance between the first vertical section 71 and the second vertical section 72 is used as the width of the fixed frame 7, the length of the first vertical section 71 is used as the maximum width of the fixed frame 7, and the length of the second vertical section 72 is used as the minimum width of the fixed frame 7. One end of the horizontal section 73 is smoothly connected to one end of the inclined section 74 to form the lower end face of the fixed frame 7. The other end of the horizontal section 73 is connected to the lower end of the first vertical section 71, and the other end of the inclined section 74 is connected to the lower end of the second vertical section 72.

[0027] It is worth noting that the fixing methods for the aforementioned first vertical segment 71, second vertical segment 72, horizontal segment 73, inclined segment 74 and the bottom of the steel box girder 1 can be directly adopted by welding, or by using angle iron and bolt group fixing, or by directly forming the fixing frame 7 as a whole and fixing it to the bottom of the steel box girder 1. Stiffeners can also be set in the fixing frame 7 to strengthen the overall mechanical performance of the fixing frame 7, so as to better provide rigid support for the damping plate 5.

[0028] The length of the plate support 51 constituting the damping plate 5 is the same as the length of the first vertical segment 71 mentioned above. The plate support 51 is further fixed to the first vertical segment 71 by means of bolts. After the plate support 51 is pasted onto the first vertical segment 71 with epoxy resin, it is further fixed by means of bolts. Due to the material of the damping plate 5 itself, it is not possible to fix the damping plate 5 to the side of the first vertical segment 71 facing the pier 2 by means of welding, nor is it possible to use the principle of integral molding to prepare the fixing frame 7 and the damping plate 5.

[0029] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A novel steel structure seismic blocking block, fixedly installed at the bottom of a steel box girder (1) and fixedly installed on the inner side of a pier support (3), characterized in that, Includes a damping plate (5) and a stiffening plate (6). The damping plate (5) is fixedly mounted on a fixed frame (7) composed of the stiffening plate (6) facing the pier support (3). The fixed frame (7) is fixedly mounted on the bottom of the steel box girder (1). The damping plate (5) includes a plate support (51) and nails (52) evenly arranged on the plate support (51). Both the plate support (51) and the nails (52) are made of neoprene rubber.

2. The novel steel structure seismic blocking block according to claim 1, characterized in that, The plate support (51) has a height of 30mm, the top diameter of the nail body (52) is 30mm, the bottom diameter is 40mm, the height is 50mm, and the spacing between adjacent nail bodies (52) is 50mm.

3. The novel steel structure seismic blocking block according to claim 2, characterized in that, The damping plate (5) is bonded to the fixed frame (7) with epoxy resin on the side facing the pier support (3).

4. The novel steel structure seismic blocking block according to claim 3, characterized in that, The damping plate (5) is in contact with the bottom of the steel box girder (1) on one side, and extends and is fixed to the side of the pier (2) on the other side.

5. The novel steel structure seismic blocking block according to claim 4, characterized in that, The fixed frame (7) includes a first vertical segment (71), a second vertical segment (72), a horizontal segment (73), and an inclined segment (74); The first vertical segment (71) is fixed as a whole with the damping plate (5) and is vertically fixed to the bottom of the steel box girder (1) based on the side close to the pier (2). The second vertical segment (72) is vertically fixed to the bottom of the steel box girder (1) based on the side away from the pier (2), and the length of the second vertical segment (72) is less than the length of the first vertical segment (71). One end of the horizontal segment (73) is smoothly connected to one end of the inclined segment (74), the other end of the horizontal segment (73) is connected to the lower end of the first vertical segment (71), and the other end of the inclined segment (74) is connected to the lower end of the second vertical segment (72).

6. The novel steel structure seismic-resistant block according to claim 5, characterized in that, The length of the plate support (51) is less than the length of the first vertical segment (71), and the plate support (51) is fixed to the lower section of the first vertical segment (71) by bolts.

7. The novel steel structure seismic blocking block according to claim 1, characterized in that, A wedge-shaped pad (4) is also provided between the bottom of the steel box girder (1) and the pier support (3).

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