Railway bridge anti-seismic support structure

Abstract

The utility model discloses a railway bridge anti-seismic support structure, which relates to the technical field of bridge engineering, and comprises an upper base, a rubber plate, an elastic mechanism and a lower base, the top edge of the upper base is provided with a hole groove, the top of the upper base is butted and fixed with an anchor bolt at the bottom of a bridge through the hole groove, the upper base is internally provided with a groove, and the upper base is provided with a groove. The elastic mechanisms are arranged in the grooves in the inner wall of the upper base, when the bridge is subjected to vibration displacement in the horizontal direction, the limiting grooves can move in the upper base in the horizontal direction, and when the limiting grooves move, the outer walls can extrude the elastic mechanisms on the corresponding sides, so that elastic steel bars of the elastic mechanisms can be extruded; and due to the fact that displacement spaces are reserved between the outer sides of the limiting grooves and the inner wall of the upper base, the limiting grooves can move in any horizontal direction, vibration of the bridge in the horizontal direction is fully buffered, and the bridge is effectively protected.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a seismic bearing structure for railway bridges. Background Technology

[0002] Bridge bearings are the connection points between the superstructure and substructure of a bridge. Their core function is to safely transfer the load of the superstructure to the piers or abutments. A search revealed a Chinese patent publication number CN221663459U, which discloses an adjustable bridge seismic support. While this seismic support component can be adjusted according to the parts of the bridge that need support, effectively solving the problem of deformation and breakage of existing bridge seismic supports, and in use, it can increase the support stability between the seismic support component and the bridge, facilitating stable use of the bridge and improving the seismic support effect, and is simple to operate, this device can only perform horizontal displacement in one direction. A bearing that only allows displacement in one direction cannot effectively cope with multi-directional seismic forces or other loads. A bearing with single-directional displacement cannot fully dissipate energy, which may lead to excessive stress on the piers or beams in the unconstrained direction, thus causing structural damage. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a seismic bearing structure for railway bridges, which solves the problem mentioned in the background technology that existing devices can only perform horizontal displacement in one direction, and the bearings with single-direction displacement cannot fully dissipate energy, thus leading to structural damage.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a seismic bearing structure for railway bridges, comprising an upper base, a rubber plate, an elastic mechanism, and a lower base. The upper base has a slot at its top edge, through which it is fixed to the bottom anchor bolts of the bridge. The upper base has a groove inside, and four elastic mechanisms are arranged within the groove. A limiting groove is provided between each of the four elastic mechanisms, and a lead rod is placed inside the limiting groove. A rubber plate and a steel plate are fitted around the lead rod. One end of the limiting groove is fitted onto a connecting seat. A lower base is located at the bottom of the connecting seat, and its top is welded to the bottom of the connecting seat. Two adjusting seats are located on both sides of the lower base, each with a circular slot on its surface. The circular slot at the top of the adjusting seat is used for anchor bolt fixing.

[0005] Preferably, multiple rubber plates and steel plates are provided, with the rubber plate located between two steel plates. The rubber plate has good elasticity and can effectively buffer the impact force brought by earthquakes or vibrations. When the bridge is subjected to vibration, the rubber plate can undergo elastic deformation, absorbing and dissipating some energy, thereby reducing the damage of seismic forces to the bridge structure. The combination of rubber plate and steel plate realizes an organic combination of rigidity and flexibility. The steel plate provides sufficient load-bearing capacity to ensure that the support can withstand the weight of the bridge and normal service loads; the rubber plate provides buffering during vibration, so that the support can remain stable under dynamic loads and avoid structural damage caused by excessive rigidity.

[0006] Preferably, a connecting cable is provided on the outside of the upper base. The top end of the connecting cable is threaded to the outside of the upper base, and the bottom end of the connecting cable is threaded to the outside of the lower base. Under earthquake action, the bridge may be subjected to forces in multiple directions, including horizontal and vertical forces. The connecting cable can not only constrain the longitudinal displacement of the support, but also limit its vertical deformation to a certain extent, thereby improving the seismic performance of the support under complex seismic forces.

[0007] Preferably, the elastic mechanism includes multiple elastic steel bars, the steel plates are tightly fitted together, and the multiple elastic steel bars are externally fitted with clamps. The two ends of the clamps are connected by second bolts. A rubber block is provided on one side of each elastic steel bar, and the rubber block is connected to the elastic steel bar by a first bolt. When subjected to external forces (such as earthquakes or vibrations), the elastic steel bars can undergo elastic deformation to absorb and buffer the external forces, thereby reducing the impact on the bridge structure. The arrangement of multiple elastic steel bars can further enhance the overall elastic buffering capacity, enabling the support to better cope with vibrations of larger amplitudes.

[0008] Preferably, the elastic steel strip is embedded in the groove on the inner wall of the upper base, and the elastic steel strip has a curved structure. This design allows the steel strip to undergo elastic deformation more effectively when subjected to external force. The curved structure increases the deformation capacity of the steel strip, enabling it to stretch and bend more flexibly under vibration or impact, thereby better absorbing and buffering energy.

[0009] Preferably, the lower base has a sloping structure on both sides at its bottom, and limit rods are welded to both sides of the lower base. The other end of the limit rods is inserted into the interior of the adjusting seat. The adjusting seat has a slot inside, and the inner wall of the slot inside the adjusting seat slides in contact with the outer wall of the limit rod. The top of the adjusting seat has a sloping structure, and both the bottom sides of the lower base and the top of the adjusting seat have sloping structures. This design allows the adjusting seat to slide along the slope, thereby adjusting the height of the support. When the adjusting seat is pushed inward, its top slope guides the lower base to move upward, thereby increasing the height of the entire support; conversely, when the adjusting seat is pulled outward, the height of the support decreases.

[0010] This utility model provides a seismic bearing structure for railway bridges. It has the following beneficial effects:

[0011] (1) The seismic bearing structure for railway bridges, when in use, the vibration of the bridge is transmitted to the steel plate and rubber plate through the upper base, and then the vibration is buffered by multiple rubber plates. The buffered load is safely transmitted to the connecting seat and the lower base, which helps to protect the bridge. When the bridge is subjected to horizontal vibration displacement, the limiting groove will move horizontally inside the upper base. When the limiting groove moves, the outer wall will squeeze the elastic mechanism on the corresponding side, which will cause the elastic steel strip of the elastic mechanism to be squeezed, thereby buffering the horizontal movement of the limiting groove. Since there is a displacement space reserved between the outer side of the limiting groove and the inner wall of the upper base, the limiting groove can move in any horizontal direction, thereby fully buffering the horizontal vibration of the bridge and effectively protecting the bridge.

[0012] (2) The seismic bearing structure for railway bridges, when the device is installed, by pushing the adjusting seats on both sides of the lower base into the lower base, under the action of the slope of the top of the adjusting seat and the slope of the bottom of the lower base, the slope of the top of the adjusting seat can guide the lower base to move upward, thereby allowing the upper base to move upward, so that the height of the device can be adjusted upward. By pulling the adjusting block outward, the height of the device can be adjusted downward, thereby improving the adjustability of the device and improving its applicability.

[0013] This solves the problem that existing devices can only perform horizontal displacement in one direction, and supports with single-direction displacement cannot fully dissipate energy, thus leading to structural damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a schematic diagram of the limiting groove structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the elastic steel bar structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the lower base structure of this utility model.

[0019] In the diagram, 1. Upper base; 2. Limiting groove; 3. Lead rod; 4. Rubber plate; 5. Steel plate; 6. Elastic mechanism; 601. Rubber block; 602. First bolt; 603. Clamp; 604. Second bolt; 605. Elastic steel bar; 7. Connecting seat; 8. Lower base; 9. Connecting cable; 10. Limiting rod; 11. Adjusting seat. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] Please see Figure 1-5This utility model provides a technical solution: a seismic bearing structure for railway bridges, including an upper base 1, a rubber plate 4, an elastic mechanism 6, and a lower base 8. The top edge of the upper base 1 has a slot, and the top of the upper base 1 is fixed to the bottom of the bridge via the slot. The upper base 1 has a groove inside, and four elastic mechanisms 6 are installed inside the groove. A limiting groove 2 is provided between the four elastic mechanisms 6. A lead rod 3 is installed inside the limiting groove 2, and a rubber plate 4 and a steel plate 5 are fitted around the lead rod 3. One end of the bottom of the limiting groove 2 is fitted onto a connecting seat 7. The lower base 8 is provided at the bottom of the connecting seat 7. The top of the lower base 8 is welded to the bottom of the connecting seat 7. Adjusting seats 11 are provided inside both sides of the lower base 8. There are two adjusting seats 11. The surface of the two adjusting seats 11 is opened with circular holes and slots. The circular holes and slots on the top of the adjusting seats 11 are used for anchor bolt fixing. Multiple rubber plates 4 and steel plates 5 are provided, and the rubber plates 4 are located between two steel plates 5. A connecting cable 9 is provided on the outside of the upper base 1. The top end of the connecting cable 9 is threaded to the outside of the upper base 1, and the bottom end of the connecting cable 9 is threaded to the outside of the lower base 8. The elastic mechanism 6 includes an elastic steel bar 605, which is elastic. Multiple steel bars 605 are provided, and the steel plates 5 are tightly fitted together. Each elastic steel bar 605 is externally fitted with a clamp 603, with both ends of the clamp 603 connected by a second bolt 604. A rubber block 601 is provided on one side of each elastic steel bar 605, and the rubber block 601 is connected to the elastic steel bar 605 by a first bolt 602. The elastic steel bars 605 are embedded in the grooves on the inner wall of the upper base 1, and the elastic steel bars 605 have a curved structure. During use, the vibration of the bridge is transmitted through the upper base 1 to the steel plates 5 and rubber plates 4, and then the vibration is buffered by the multiple rubber plates 4. The buffered load is then safely absorbed. The vibration is transmitted to the connecting seat 7 and the lower base 8, which helps protect the bridge. When the bridge is subjected to horizontal vibration displacement, the limiting groove 2 will move horizontally inside the upper base 1. When the limiting groove 2 moves, the outer wall will squeeze the elastic mechanism 6 on the corresponding side, which will cause the elastic steel strip 605 of the elastic mechanism 6 to be squeezed, thereby buffering the horizontal movement of the limiting groove 2. Since there is a displacement space reserved between the outer side of the limiting groove 2 and the inner wall of the upper base 1, the limiting groove 2 can move in any horizontal direction, thereby fully buffering the horizontal vibration of the bridge and effectively protecting the bridge.

[0023] Example 2:

[0024] This utility model provides a technical solution: a seismic bearing structure for railway bridges. The bottom of the lower base 8 has a sloping structure on both sides, and limit rods 10 are welded to both sides of the lower base 8. The other end of the limit rod 10 is inserted into the interior of the adjusting seat 11. The adjusting seat 11 has a groove inside, and the inner wall of the groove inside the adjusting seat 11 slides in contact with the outer wall of the limit rod 10. The top of the adjusting seat 11 has a sloping structure. When the device is installed, by pushing the adjusting seats 11 on both sides of the lower base 8 into the lower base 8, the slope of the top of the adjusting seat 11 and the slope of the bottom of the lower base 8 act together to guide the lower base 8 to move upward, thereby allowing the upper base 1 to move upward. This allows the height of the device to be adjusted upward. By pulling the adjusting block outward, the height of the device can be adjusted downward, which improves the adjustability and applicability of the device.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A seismic bearing structure for railway bridges, characterized in that: The structure includes an upper base (1), a rubber plate (4), an elastic mechanism (6), and a lower base (8). The upper base (1) has a slot at its top edge, and the top of the upper base (1) is fixed to the bottom anchor bolts of the bridge via the slot. The upper base (1) has a groove inside, and an elastic mechanism (6) is installed inside the groove on the inner wall of the upper base (1). Four elastic mechanisms (6) are provided, and a limiting groove (2) is provided between the four elastic mechanisms (6). A lead rod (3) is installed inside the limiting groove (2). The lead rod (3) is fitted with a rubber plate (4) and a steel plate (5) on the outside. One end of the bottom of the limiting groove (2) is fitted onto the outside of the connecting seat (7). The bottom of the connecting seat (7) is provided with a lower base (8). The top of the lower base (8) is welded to the bottom of the connecting seat (7). Adjusting seats (11) are provided inside both sides of the lower base (8). There are two adjusting seats (11). The surfaces of the two adjusting seats (11) are provided with circular holes and slots. The circular holes and slots on the top of the adjusting seats (11) are used for connecting and fixing anchor bolts.

2. The seismic bearing structure for railway bridges according to claim 1, characterized in that: Multiple rubber plates (4) and steel plates (5) are provided, and the rubber plate (4) is located between two steel plates (5).

3. The seismic bearing structure for railway bridges according to claim 1, characterized in that: The upper base (1) is provided with a connecting cable (9) on its outside. The top end of the connecting cable (9) is threaded to the outside of the upper base (1), and the bottom end of the connecting cable (9) is threaded to the outside of the lower base (8).

4. The seismic bearing structure for railway bridges according to claim 1, characterized in that: The elastic mechanism (6) includes multiple elastic steel bars (605), the steel plates (5) are tightly fitted together, and the multiple elastic steel bars (605) are provided with clamps (603) on the outside. The two ends of the clamps (603) are connected by second bolts (604). A rubber block (601) is provided on one side of the elastic steel bar (605), and the rubber block (601) is connected to the elastic steel bar (605) by a first bolt (602).

5. The seismic bearing structure for railway bridges according to claim 4, characterized in that: The elastic steel strip (605) is embedded in the groove of the inner wall of the upper base (1), and the elastic steel strip (605) has a curved structure.

6. The seismic bearing structure for railway bridges according to claim 1, characterized in that: The bottom of the lower base (8) has a sloping structure on both sides, and a limit rod (10) is welded on both sides of the lower base (8). The other end of the limit rod (10) is inserted into the interior of the adjustment seat (11). The adjustment seat (11) has a slot inside, and the inner wall of the slot inside the adjustment seat (11) slides in contact with the outer wall of the limit rod (10). The top of the adjustment seat (11) has a sloping structure.

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