Steel structure spliced bridge with stable structure

Abstract

This invention relates to the field of steel structure bridge technology, and in particular to a steel structure spliced ​​bridge with a stable structure, comprising a steel bridge deck, piers, and dampers. A connecting plate is screwed to the bottom of the steel bridge deck, and a support plate is fixed to the top of the piers via a fixing mechanism. The support plate and the connecting plate are positioned correspondingly. The top and bottom of the damper are screwed to the bottom of the connecting plate and the top of the support plate, respectively. This solution, by setting a damping mechanism between the steel bridge deck and the piers, provides buffering in both the horizontal and longitudinal directions, reducing the horizontal forces on the steel bridge deck, improving the seismic performance of the steel bridge deck, and thus enhancing the stability of the steel bridge.

Description

Technical Field

[0001] This invention relates to the field of steel structure bridge technology, and in particular to a steel structure spliced ​​bridge with a stable structure. Background Technology

[0002] Steel-structure spliced ​​bridges are bridges whose main load-bearing structure is made of steel. A publicly disclosed patent (CN202121259267.4) describes a highly stable steel-structure spliced ​​bridge. It uses locking blocks and slots to connect individual bridge frame units, with fixing pins securing them together. This ensures a firm fixation between the individual bridge frame units, preventing loosening and facilitating connection. Adjustable plates and limiting blocks are also included, with the limiting blocks evenly spaced on the adjustable plate. This allows the adjusting plate to engage with the limiting slots, ensuring a secure connection of the connecting columns to the piers and preventing detachment. While this provides a stable connection and ease of use, the patent lacks a horizontal shock-absorbing mechanism, resulting in lower seismic performance. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a steel structure splicing bridge with a stable structure.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a steel structure spliced ​​bridge with a stable structure, comprising a steel structure bridge deck, piers, and dampers. A connecting plate is installed at the bottom of the steel structure bridge deck by screws. A support plate is connected to the top of the piers by a fixing mechanism. The support plate and the connecting plate are positioned correspondingly. The top and bottom of the damper are respectively installed at the bottom of the connecting plate and the top of the support plate by screws. A damping mechanism is provided between the two ends of the support plate and the two ends of the connecting plate. The damping mechanism includes two fixing plates. One end of the two fixing plates is installed at the end of the support plate by screws. A first fixing rod is installed between the sides of the two fixing plates by screws. Two sliding blocks and two buffer springs are movably sleeved on the surface of the first fixing rod. The two ends of the spring are respectively installed on the sides of the sliding block and the fixed plate by screws. One end of each of the two sliding blocks is installed with a first long strip by screws. The bottom of the two first long strips contacts the top of the support plate. The sides of the two first long strips corresponding to each other are provided with second mounting grooves. The two symmetrical sides inside the two second mounting grooves are each installed with a second fixing rod by screws. The surface of each of the two second fixing rods is movably fitted with a connecting block. The surface of each of the two second fixing rods is movably fitted with a second compression spring. The two ends of the second compression spring are respectively installed on the side of the connecting block and the inner side of the second mounting groove by screws. One end of each of the two connecting blocks extends to one side of the first long strip. A support mechanism is provided between the two connecting blocks and the connecting plate.

[0005] Preferably, the support mechanism includes two fixed pipe fittings. The bottom ends of the two fixed pipe fittings are respectively installed on the sides of the two connecting blocks by screws. The top ends of the two fixed pipe fittings are slidably inserted with sliding support rods. The sides of the two sliding support rods and the two fixed pipe fittings are provided with elongated holes. Screws are slidably inserted between the four elongated holes. Both ends of the two screws are threaded with fastening nuts. The sides of the two fastening nuts are respectively in contact with the sides of the two fixed pipe fittings.

[0006] Preferably, the length of the elongated hole is greater than the radial dimension of the fastening nut.

[0007] Preferably, the bottom of the first long strip is provided with a sliding groove, and the top of the support plate is installed with a second long strip by screws, and the surface of the second long strip and the inner surface of the sliding groove are in sliding contact.

[0008] Preferably, the length of the second strip is greater than the width of the first strip.

[0009] Preferably, the fixing mechanism includes a concave part and two second screw holes. The two ends of the concave part are distributed on both sides of the support plate. The surface of the concave part is in contact with the bottom of the pier. The two ends of the concave part are provided with first screw holes. The two second screw holes are symmetrically opened on two symmetrical sides of the support plate. Bolts are threaded between the second screw holes and the first screw holes.

[0010] Preferably, the two symmetrical sides of the bridge pier are provided with first mounting grooves, and the two first mounting grooves correspond to the positions of the two ends of the concave member. The two ends of the concave member are respectively matched with the two first mounting grooves.

[0011] Preferably, a buffer rubber block is installed on the other side of each connecting block by screws, and one end of the buffer rubber block is installed on the inner side of the second mounting groove by screws.

[0012] Preferably, a first compression spring is movably sleeved on the surface of the first fixed rod, and the two ends of the first compression spring are respectively mounted on the sides of the two sliding blocks by screws.

[0013] Preferably, the buffer spring is a tension spring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This solution involves installing a damping mechanism between the steel bridge deck and the piers. This mechanism provides buffering in both the horizontal and longitudinal directions, reducing the horizontal forces acting on the steel bridge deck and improving its seismic performance, thereby enhancing the stability of the steel bridge. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a steel structure spliced ​​bridge with a stable structure according to the present invention;

[0017] Figure 2 This is a schematic diagram of the shock absorption mechanism, pier and damper connection structure of a steel structure spliced ​​bridge with a stable structure according to the present invention.

[0018] Figure 3 This is a schematic diagram of the pier structure of a steel-framed spliced ​​bridge with a stable structure according to the present invention;

[0019] Figure 4 This is a schematic diagram of the shock absorption mechanism and damper connection structure of a steel structure spliced ​​bridge with a stable structure according to the present invention.

[0020] Figure 5 This is a schematic diagram of the support plate structure of a steel structure spliced ​​bridge with a stable structure according to the present invention;

[0021] Figure 6 This is a schematic diagram of the connection structure between the first long strip block and the connecting block of a steel structure spliced ​​bridge with a stable structure according to the present invention.

[0022] Figure 7 This is a schematic diagram of the connection structure between the fixed pipe fittings and the sliding support rods of a steel structure spliced ​​bridge with a stable structure according to the present invention.

[0023] Figure 8 This is a schematic diagram of a concave component structure of a steel structure spliced ​​bridge with a stable structure according to the present invention.

[0024] In the diagram: 1. Steel bridge deck; 2. Screw rod; 3. Pier; 4. Concave part; 5. First long strip block; 6. Fixed pipe fitting; 7. Sliding support rod; 8. Support plate; 9. Connecting plate; 10. Damper; 11. Second long strip block; 12. First mounting groove; 13. Long hole; 14. Fastening nut; 15. Sliding block; 16. First compression spring; 17. First fixing rod; 18. Fixing plate; 19. First screw hole; 20. Second screw hole; 21. Connecting block; 22. Second fixing rod; 23. Second compression spring; 24. Second mounting groove; 25. Slide groove; 26. Buffer rubber block; 27. Buffer spring; 28. Bolt. Detailed Implementation

[0025] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0026] like Figure 1-8The steel structure spliced ​​bridge with a stable structure shown includes a steel bridge deck 1, piers 3, and dampers 10. A connecting plate 9 is screwed to the bottom of the steel bridge deck 1. A support plate 8 is connected to the top of the piers 3 via a fixing mechanism. The fixing mechanism includes a concave member 4 and two second screw holes 20. The two ends of the concave member 4 are distributed on both sides of the support plate 8, and the surface of the concave member 4 contacts the bottom of the piers 3. First screw holes 19 are provided at both ends of the concave member 4. The two second screw holes 20 are symmetrically provided on two symmetrical sides of the support plate 8. Bolts 28 are threaded between the second screw holes 20 and the first screw holes 19. First mounting bolts 28 are provided on both symmetrical sides of the piers 3. The groove 12, the two first mounting grooves 12 are respectively positioned at both ends of the concave part 4, and the two ends of the concave part 4 are respectively matched with the two first mounting grooves 12; when fixing the position of the support plate 8, first place the support plate 8 on the top of the pier 3, then place the concave part 4 below the pier 3. After moving the two ends of the concave part 4 to both sides of the support plate 8, the surface of the concave part 4 contacts the bottom of the pier 3, and at the same time, the positions of the second screw hole 20 and the first screw hole 19 correspond. Then, the bolt 28 is threaded into the second screw hole 20 and the first screw hole 19 to connect and fix the concave part 4 and the support plate 8, thereby improving the stability of the support plate 8 installed on the pier 3.

[0027] The support plate 8 and the connecting plate 9 are positioned correspondingly. The top and bottom of the damper 10 are respectively installed on the bottom of the connecting plate 9 and the top of the support plate 8 with screws. A damping mechanism is provided between the two ends of the support plate 8 and the two ends of the connecting plate 9. The damping mechanism includes two fixed plates 18. One end of the two fixed plates 18 is installed on the end of the support plate 8 with screws. A first fixed rod 17 is installed between the sides of the two fixed plates 18 with screws. Two sliding blocks 15 and two buffer springs 27 are movably sleeved on the surface of the first fixed rod 17. The two ends of the buffer springs 27 are respectively installed on the sides of the sliding blocks 15 and the fixed plates 18 with screws. One end of each of the two sliding blocks 15 is installed with a first elongated block 5 with screws. The bottom of the two first elongated blocks 5 contacts the top of the support plate 8. A second mounting groove 24 is provided on each side corresponding to the position between the two long strips 5. A second fixing rod 22 is installed on each of the two symmetrical sides inside the two second mounting grooves 24 by screws. A connecting block 21 is movably sleeved on the surface of each of the two second fixing rods 22. A second compression spring 23 is movably sleeved on the surface of each of the two second fixing rods 22. The two ends of the second compression spring 23 are respectively installed on the side of the connecting block 21 and the inner side of the second mounting groove 24 by screws. One end of the two connecting blocks 21 extends to one side of the first long strip 5. The buffer spring 27 is a tension spring. The buffer spring 27 generates a reaction force to push the sliding block 15 when subjected to force, which is used to slow down the moving speed of the sliding block 15, thereby reducing the pressure of the sliding block 15 and improving the buffering effect of the sliding block 15.

[0028] A support mechanism is provided between the two connecting blocks 21 and the connecting plate 9; the support mechanism includes two fixed pipe fittings 6, the bottom ends of which are respectively installed on the sides of the two connecting blocks 21 by screws, and the top ends of the two fixed pipe fittings 6 are slidably inserted with sliding support rods 7. The sides of the two sliding support rods 7 and the two fixed pipe fittings 6 are each provided with elongated holes 13, and screw rods 2 are slidably inserted between the four elongated holes 13. Both ends of the two screw rods 2 are threaded with fastening nuts 14, and the sides of the two fastening nuts 14 respectively contact the sides of the two fixed pipe fittings 6; the length of the elongated holes 13 is greater than that of the fastening screw rods 13. The radial dimension of the mother 14; When the steel structure bridge vibrates, the vertical force generated by the vibration is applied to the damper 10. The damper 10 is used to reduce the vibration amplitude of the steel structure bridge deck 1 on the pier 3 in the vertical direction. The steel structure bridge deck 1 moves in the vertical direction due to the force, while driving the sliding support rod 7 to slide inside the fixed tube 6. The sliding support rod 7 slides on the surface of the screw rod 2 through the elongated hole 13. The movement amplitude of the sliding support rod 7 is synchronously adjusted according to the length of the damper 10 contraction, which buffers the stability of the steel structure bridge deck 1 moving in the vertical direction due to vibration.

[0029] The bottom of the first long strip 5 is provided with a sliding groove 25, and the top of the support plate 8 is installed with a second long strip 11 by screws. The surface of the second long strip 11 and the inner surface of the sliding groove 25 slide in contact. The length of the second long strip 11 is greater than the width of the first long strip 5. When the first long strip 5 is subjected to force and moves longitudinally in the horizontal direction, the first long strip 5 slides on the surface of the second long strip 11 through the sliding groove 25, which improves the stability of the first long strip 5 when moving.

[0030] The other side of the connecting block 21 is fitted with a buffer rubber block 26 by screws. One end of the buffer rubber block 26 is fitted with a screw on the inner side of the second mounting groove 24. The buffer rubber block 26 is used to further buffer the movement of the connecting block 21, thereby increasing the buffering effect on the steel structure bridge deck 1.

[0031] A first compression spring 16 is movably sleeved on the surface of the first fixed rod 17. The two ends of the first compression spring 16 are respectively installed on the sides of the two sliding blocks 15 by screws. The first compression spring 16 works in conjunction with the buffer spring 27, and the first compression spring 16 and the buffer spring 27 are distributed on both sides of the sliding block 15. When the sliding block 15 is compressed by the buffer spring 27 and the external force, the buffer spring 27 can easily return to its original length, and the performance of the first compression spring 16 can also buffer the sliding block 15, thereby improving the buffering effect when the sliding block 15 slides on the first fixed rod 17.

[0032] Working principle: When the steel bridge deck 1 is subjected to a horizontal vibration force, the steel bridge deck 1 drives the connecting plate 9 to move synchronously. The connecting plate 9 drives the sliding support rod 7 to push the fixed pipe 6 to move synchronously. Since the horizontal force is roughly divided into two directions, horizontal transverse and horizontal longitudinal, when subjected to the horizontal transverse force, the fixed pipe 6 drives the connecting block 21 to slide on the surface of the second fixed rod 22. At the same time, when the connecting block 21 moves, it applies a force to the second compression spring 23. The reaction force generated by the second compression spring 23 pushes the connecting block 21. The reaction force of the second compression spring 23 also offsets part of the force on the connecting block 21, slowing down the moving speed of the connecting block 21 after being subjected to the force, thereby slowing down the moving speed of the connecting block 21 on the surface of the second fixed rod 22, thus playing a buffering role for the steel bridge deck 1.

[0033] When the steel bridge deck is subjected to a horizontal longitudinal force, the fixed pipe 6 drives the connecting block 21 to slide on the surface of the second fixed rod 22, and also pulls the second fixed rod 22 in the horizontal longitudinal direction. The second fixed rod 22 drives the first long strip 5 to slide on the surface of the second long strip 11. At the same time, the first long strip 5 drives the sliding block 15 to slide synchronously. The sliding block 15 pulls or squeezes the buffer spring 27, so that the reaction generated by the buffer spring 27 is the same as the effect of the second compression spring 23, which further reduces the vibration amplitude of the steel bridge deck 1 under the force in the horizontal longitudinal direction.

[0034] In summary, the damping mechanism provides buffering in both the horizontal and longitudinal directions, reducing the horizontal forces acting on the steel bridge deck 1, improving its seismic performance, and thus enhancing the stability of the steel bridge.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A steel structure spliced ​​bridge with a stable structure, comprising a steel structure bridge deck (1), piers (3), and dampers (10), characterized in that, The bottom of the steel bridge deck (1) is fitted with a connecting plate (9) by screws. The top of the pier (3) is connected with a support plate (8) by a fixing mechanism. The positions of the support plate (8) and the connecting plate (9) are corresponding. The top and bottom of the damper (10) are respectively fitted with screws to the bottom of the connecting plate (9) and the top of the support plate (8). A damping mechanism is provided between the two ends of the support plate (8) and the two ends of the connecting plate (9). The damping mechanism includes two fixed plates (18). One end of the two fixed plates (18) is fitted with screws to the end of the support plate (8). A first fixed rod (17) is fitted with screws between the sides of the two fixed plates (18). Two sliding blocks (15) and two buffer springs (27) are movably fitted on the surface of the first fixed rod (17). The two ends of the buffer springs (27) are respectively fitted with screws to the sliding blocks (15) and the fixed plates (18). On the side, one end of each of the two sliding blocks (15) is fitted with a first long strip (5) by screws. The bottom of the two first long strips (5) is in contact with the top of the support plate (8). The sides of the two first long strips (5) are provided with second mounting grooves (24). The two symmetrical sides inside the two second mounting grooves (24) are fitted with second fixing rods (22) by screws. The surfaces of the two second fixing rods (22) are movably fitted with connecting blocks (21). The surfaces of the two second fixing rods (22) are movably fitted with second compression springs (23). The two ends of the second compression springs (23) are respectively installed on the side of the connecting block (21) and the inner side of the second mounting groove (24) by screws. One end of the two connecting blocks (21) extends to one side of the first long strip (5). A support mechanism is provided between the two connecting blocks (21) and the connecting plate (9).

2. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, The support mechanism includes two fixed pipe fittings (6). The bottom ends of the two fixed pipe fittings (6) are respectively installed on the sides of the two connecting blocks (21) by screws. The top ends of the two fixed pipe fittings (6) are slidably inserted with sliding support rods (7). The sides of the two sliding support rods (7) and the two fixed pipe fittings (6) are provided with elongated holes (13). Screws (2) are slidably inserted between the four elongated holes (13). The two ends of the two screws (2) are threaded with fastening nuts (14). The sides of the two fastening nuts (14) are in contact with the sides of the two fixed pipe fittings (6).

3. A steel structure spliced ​​bridge with a stable structure according to claim 2, characterized in that, The length of the elongated hole (13) is greater than the radial dimension of the fastening nut (14).

4. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, The bottom of the first long strip (5) is provided with a sliding groove (25), and the top of the support plate (8) is installed with a second long strip (11) by screws. The surface of the second long strip (11) and the inner surface of the sliding groove (25) slide in contact.

5. A steel structure spliced ​​bridge with a stable structure according to claim 4, characterized in that, The length of the second long strip (11) is greater than the width of the first long strip (5).

6. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, The fixing mechanism includes a concave part (4) and two second screw holes (20). The two ends of the concave part (4) are distributed on both sides of the support plate (8). The surface of the concave part (4) is in contact with the bottom of the pier (3). The two ends of the concave part (4) are provided with first screw holes (19). The two second screw holes (20) are symmetrically opened on two symmetrical sides of the support plate (8). A bolt (28) is threaded between the second screw holes (20) and the first screw holes (19).

7. A steel structure spliced ​​bridge with a stable structure according to claim 6, characterized in that, The two symmetrical sides of the pier (3) are provided with first mounting grooves (12), and the two first mounting grooves (12) correspond to the positions of the two ends of the concave part (4). The two ends of the concave part (4) are respectively matched with the two first mounting grooves (12).

8. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, The other side of each connecting block (21) is fitted with a buffer rubber block (26) by screws, and one end of the buffer rubber block (26) is fitted with a screw on the inner side of the second mounting groove (24).

9. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, A first compression spring (16) is movably sleeved on the surface of the first fixed rod (17), and the two ends of the first compression spring (16) are respectively installed on the sides of the two sliding blocks (15) by screws.

10. A steel structure spliced ​​bridge with a stable structure according to claim 1, characterized in that, The buffer spring (27) is a tension spring.

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