Damper quick replacement structure

Abstract

The utility model relates to bridge support technical field, aims at solving the problem that damper is inconvenient to replace in the position between upper support plate and lower support plate after earthquake due to the different relative displacement of upper support plate and lower support plate of post-earthquake support, the existence of damper connecting point position deviation, provides a damper quick replacement structure, including damper, the both ends of damper are connected with the upper support plate of support, lower support plate connection, the both ends of damper are connected with the upper support plate between the lower support plate and have shear key, the both ends of damper are connected with the upper support plate between the lower support plate and have anchorage member, the wedge block is installed between shear key and damper, the wedge block is matched with shear key, the fastener is connected between the wedge block and damper, the wedge block includes a plurality of wedge block units, the utility model can realize the quick installation and dismounting of damper in the installation stage and the maintenance stage after earthquake.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing technology, and more specifically, to a damper quick-replacement structure. Background Technology

[0002] Currently, installing seismic isolation bearings or dampers between bridge beams and piers has become an important method in bridge seismic isolation design. Circular steel dampers are usually used in combination with bearings. When a strong earthquake occurs, the steel damper is damaged by cyclic yielding and energy dissipation, while the bearing usually remains undamaged. Post-earthquake recovery typically requires in-situ replacement of the damper.

[0003] Existing steel dampers are typically connected to the upper and lower support plates of the bearing using methods such as hinges, bolts, and welding. After an earthquake, the relative positions of the beams and piers cannot be completely restored to their initial state; that is, the relative displacements of the upper and lower support plates of each bearing are different, resulting in misalignment of the connection points of the steel dampers. This causes great inconvenience for in-situ replacement of the steel dampers. Replacing the entire bearing would result in a long replacement cycle and high costs, failing to meet the need for rapid post-earthquake recovery. Utility Model Content

[0004] The present invention aims to provide a quick-change structure for dampers to solve the problem in the prior art where the connection point of the damper is misaligned due to the different relative displacements of the upper and lower support plates after an earthquake, making it inconvenient to replace the damper between the upper and lower support plates after an earthquake.

[0005] This utility model is achieved using the following technical solution: This utility model provides a quick-change structure for a damper, including a damper, the two ends of which are respectively connected to the upper support plate and the lower support plate of the support. Shear keys are connected to the upper support plate and the lower support plate at both ends of the damper, respectively; anchors are connected to the upper support plate and the lower support plate at both ends of the damper, respectively. A wedge block is installed between the shear key and the damper, and the wedge block cooperates with the shear key; a fastener connects the wedge block and the damper. The wedge block comprises multiple wedge block units.

[0006] With the above structure, when replacing the damper, first remove the fasteners connecting the wedge block and the damper, then remove the wedge block, and disassemble all the wedge block units in this way.

[0007] After all the wedge block units have been disassembled, the anchor at one end of the damper can be removed first, and then the shear key at that end of the damper can be removed from one of the support plates. In the same way, the other shear key can be removed from the other support plate, thus removing the shear key from the upper support plate and the lower support plate.

[0008] After the anchor points at both ends of the damper are removed, the damper can be easily pulled out horizontally. The installation of the damper is simply the reverse of the above process. The whole operation is very simple.

[0009] During installation, if the connection point of the damper is misaligned due to the different relative displacements of the upper and lower support plates after an earthquake, a wedge block unit is placed on the opposite side of the misaligned damper. The wedge block unit is then forcibly pushed between the shear key and the damper using a hydraulic jack, thereby correcting the misalignment of the damper's connection point. This solves the problem in existing technologies where the damper's connection point is misaligned due to the different relative displacements of the upper and lower support plates after an earthquake, making it inconvenient to replace the damper in place between the upper and lower support plates after an earthquake. This allows for rapid replacement of the damper in place after an earthquake.

[0010] As a preferred technical solution: The shear key located at one end of the damper passes through the shear groove on the damper and the upper support plate, and the shear key located at the other end of the damper passes through the shear groove on the damper and the lower support plate.

[0011] As a preferred technical solution: The anchor at one end of the damper passes through the anchoring hole in the damper and the upper support plate, and the anchor at the other end of the damper passes through the anchoring hole in the damper and the lower support plate.

[0012] As a preferred technical solution: One end of the shear key is a columnar structure, and the side of the columnar structure is a cylindrical surface. The cylindrical surface of the shear key contacts the sidewall of the shear groove of the upper support plate and the lower support plate to form a surface fit.

[0013] As a preferred technical solution: The other end of the shear key has a wedge-shaped side surface, and the wedge-shaped side of the shear key mates with and contacts the wedge-shaped side of the wedge block.

[0014] As a preferred technical solution: The other end of the shear key is a platform-shaped structure, and the side of the platform-shaped structure is a wedge-shaped surface.

[0015] As a preferred technical solution: Multiple wedge block units can be assembled to form a complete wedge block, and all wedge block units are installed in the annular mounting cavity between the shear key wedge surface and the damper.

[0016] As a preferred technical solution: The cross-section of the columnar structure is rectangular or circular; the cross-section of the platform-shaped structure is rectangular or circular; and the wedge-shaped surface of the wedge block is adapted to the wedge-shaped surface of the shear key.

[0017] As a preferred technical solution: The damper is a circular steel damper, which is hung on both sides or one side of the transverse bridge direction of the support.

[0018] As a preferred technical solution: The anchor is an anchoring screw, and the fastener is a fastening screw.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: The structure of this utility model is simple. By using the combination of wedge blocks, shear keys and dampers, the dampers can be quickly installed and disassembled during the installation and post-earthquake maintenance phases. The dampers are connected to the upper and lower support plates of the bearing by shear keys, wedge blocks and screws, so that they can deform and dissipate energy in any horizontal direction, thus meeting the seismic isolation and reduction requirements of the bridge in any horizontal direction. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the installation of the quick-change damper structure described in this utility model.

[0021] Figure 2 for Figure 1 Top view.

[0022] Figure 3 This is a schematic diagram of the structure of the damper described in this utility model. Figure 1 .

[0023] Figure 4 This is a schematic diagram of the structure of the damper described in this utility model. Figure 2 .

[0024] Figure 5 Structural explosion of the quick-replacement damper structure described in this utility model Figure 1 .

[0025] Figure 6 Structural explosion of the quick-replacement damper structure described in this utility model Figure 2 .

[0026] Figure 7 for Figure 2 Enlarged schematic diagram of point I in the middle.

[0027] Figure 8 for Figure 6 A partial schematic diagram of the damper quick-change structure is shown.

[0028] Figure 9 for Figure 7 Cross-sectional view along the AA direction.

[0029] Figure 10 for Figure 8 Cross-sectional view along the AA direction.

[0030] Icons: 1-Upper support plate, 2-Lower support plate, 3-Damper, 4-Wedge block, 5-Fastening screw, 6-Anchoring screw, 7-Shear key, 8-Shear groove, 9-Anchoring hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1 like Figures 1-10 As shown, this embodiment proposes a quick-change structure for a damper, including a damper 3, the two ends of which are connected between the upper support plate 1 and the lower support plate 2 of the support.

[0033] Preferably, the damper 3 is a circular steel damper, such as... Figure 1 and Figure 2 As shown, the circular steel damper is mounted on one or both sides of the support in the transverse direction of the bridge.

[0034] like Figure 3 and Figure 4 As shown, both ends of the damper 3 are provided with shear grooves 8 and anchoring holes 9, as... Figure 5 and Figure 6 As shown, shear grooves 8 and anchor holes 9 are also provided on the upper support plate 1 and the lower support plate 2.

[0035] like Figure 5 and Figure 6 As shown, the two ends of the damper 3 are respectively connected to the upper support plate 1 and the lower support plate 2 by shear keys 7. The shear key 7 located at one end of the damper 3 passes through the shear groove 8 on the damper 3 and the upper support plate 1, and the shear key 7 located at the other end of the damper 3 passes through the shear groove 8 on the damper 3 and the lower support plate 2.

[0036] Anchor screws 6 are connected to the upper support plate 1 and the lower support plate 2 at both ends of the damper 3, respectively. The anchor screw 6 at one end of the damper 3 passes through the anchor hole 9 on the damper 3 and the upper support plate 1, and the anchor screw 6 at the other end of the damper 3 passes through the anchor hole 9 on the damper 3 and the lower support plate 2.

[0037] One end of the shear key 7 is a columnar structure and the other end is a frustum structure. The side of the columnar structure is a cylindrical surface, and the side of the frustum structure is a wedge-shaped surface.

[0038] The cylindrical surface of the shear key 7 engages with and contacts the sidewall of the shear groove 8 of the upper support plate 1 and the lower support plate 2. The shear key 7, the upper support plate 1, and the lower support plate 2 transmit horizontal force and bending moment together through a surface tight fit.

[0039] like Figure 9 and Figure 10 As shown, a wedge block 4 is installed between the shear key 7 and the damper 3. The wedge-shaped surface of the shear key 7 mates with and contacts the wedge-shaped surface of the wedge block 4. The wedge block 4 is tightly fitted with the shear key 7 and the damper 3, so that the shear key 7, the upper support plate 1, and the lower support plate 2 jointly transmit horizontal force and bending moment through the tight fit.

[0040] Preferably, the cross-section of the columnar structure is rectangular or circular. The cross-section of the platform-shaped structure is rectangular or circular, and the wedge-shaped surface of the wedge block 4 is adapted to the wedge-shaped surface of the shear key 7.

[0041] The wedge block 4 comprises multiple wedge block units, which can be assembled to form a complete wedge block 4. All wedge block units are installed in the annular mounting cavity between the wedge surface of the shear key 7 and the damper 3. During installation and replacement, the wedge block units can also be used to adjust the relative position of the damper 3 with the upper support plate 1 and the lower support plate 2. When one end of the damper 3 is misaligned, a wedge block unit can be placed on the opposite side of the misalignment and forcibly pushed between the shear key 7 and the damper 3 using a hydraulic jack, thereby correcting the misalignment of the connection point of the damper 3.

[0042] Preferred, such as Figure 7 and Figure 8As shown, when the cross-section of the platform-shaped structure is rectangular, the wedge block 4 includes 4 wedge block units, and the 4 wedge block units respectively cooperate with the 4 wedge surfaces of the shear key 7; when the cross-section of the platform-shaped structure is circular, the wedge block 4 includes 3 wedge block units, and the 3 wedge block units respectively cooperate with the 4 wedge surfaces of the shear key 7.

[0043] The wedge block 4 is connected to the damper 3 by fastening screws 5 to ensure the vertical stability of the wedge block 4.

[0044] This invention first uses the anchoring screws 6 to connect and fasten the damper 3 to the support plate, and then uses the fastening screws 5 to connect and pre-tighten the wedge block 4 and the damper 3 to ensure that the damper 3 and the support are reliably connected in the vertical and horizontal directions.

[0045] When replacing the damper 3, first remove the fastening screw 5 connecting the wedge block 4 and the damper 3. The end face of the wedge block 4 is provided with a threaded process hole. Then screw the fastening screw 5 into the threaded process hole on the end face of the wedge block 4, and the wedge block 4 can be pulled out. Disassemble all the wedge block units in this way.

[0046] After all the wedge block units are disassembled, the anchor screw 6 located at one end of the damper 3 can be removed first, and then screwed into the center threaded process hole on the shear key 7 located at that end of the damper 3. The shear key 7 can be removed from one of the support plates by using a pry bar. In the same way, the other shear key 7 can be removed from the other support plate, so that the shear key 7 can be removed from the upper support plate 1 and the lower support plate 2.

[0047] After the anchor points at both ends of the damper 3 are disassembled, the damper 3 can be easily pulled out horizontally. The installation of the damper 3 is simply the reverse of the above process. The whole operation is very simple.

[0048] The structure of this utility model is simple. By using the cooperation of wedge block 4, shear key 7 and damper 3, the damper can be quickly installed and disassembled during the installation stage and the post-earthquake maintenance stage. The damper 3 is connected to the upper and lower support plates of the support by shear key 7, wedge block 4 and screws, so that it can deform and dissipate energy in any horizontal direction, thus meeting the seismic isolation and vibration reduction requirements of the bridge in any horizontal direction.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-change structure for a damper, characterized in that: Includes a damper, the two ends of which are respectively connected to the upper support plate and the lower support plate of the support; Shear keys are connected to the upper support plate and the lower support plate at both ends of the damper, respectively; anchors are connected to the upper support plate and the lower support plate at both ends of the damper, respectively. A wedge block is installed between the shear key and the damper, and the wedge block cooperates with the shear key; a fastener connects the wedge block and the damper. The wedge block comprises multiple wedge block units.

2. The damper quick-change structure according to claim 1, characterized in that: The shear key located at one end of the damper passes through the shear groove on the damper and the upper support plate, and the shear key located at the other end of the damper passes through the shear groove on the damper and the lower support plate.

3. The damper quick-change structure according to claim 1, characterized in that: The anchor at one end of the damper passes through the anchoring hole in the damper and the upper support plate, and the anchor at the other end of the damper passes through the anchoring hole in the damper and the lower support plate.

4. The damper quick-change structure according to claim 1, characterized in that: One end of the shear key is a columnar structure, and the side of the columnar structure is a cylindrical surface. The cylindrical surface of the shear key contacts the sidewall of the shear groove of the upper support plate and the lower support plate to form a surface fit.

5. The damper quick-change structure according to claim 4, characterized in that: The other end of the shear key has a wedge-shaped side surface, and the wedge-shaped side of the shear key mates with and contacts the wedge-shaped side of the wedge block.

6. The damper quick-change structure according to claim 5, characterized in that: The other end of the shear key is a platform-shaped structure, and the side of the platform-shaped structure is a wedge-shaped surface.

7. The damper quick-change structure according to claim 5, characterized in that: Multiple wedge block units can be assembled to form a complete wedge block, and all wedge block units are installed in the annular mounting cavity between the shear key wedge surface and the damper.

8. The damper quick-change structure according to claim 6, characterized in that: The cross-section of the columnar structure is rectangular or circular; the cross-section of the platform-shaped structure is rectangular or circular; and the wedge-shaped surface of the wedge block is adapted to the wedge-shaped surface of the shear key.

9. The damper quick-change structure according to claim 1, characterized in that: The damper is a circular steel damper, which is hung on both sides or one side of the transverse bridge direction of the support.

10. The damper quick-change structure according to any one of claims 1-9, characterized in that: The anchor is an anchoring screw, and the fastener is a fastening screw.

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