Anti-seismic stable bridge steel structure

Abstract

The application discloses an anti-seismic stable bridge steel structure and relates to the technical field of steel structures. The anti-seismic stable bridge steel structure comprises a shock insulation rubber support, a plurality of bridge decks and a plurality of reinforcing bars, the shock insulation rubber support comprises a pre-buried steel plate, the top of the pre-buried steel plate is fixedly connected with a connecting steel plate one, the top of the connecting steel plate one is fixedly connected with a rubber layer, the inner wall of the rubber layer is fixedly connected with a plurality of layers, and the inner wall of each of the plurality of layers is fixedly connected with a steel plate layer. When vibration is encountered, the shock insulation rubber support can make the steel structure above the connecting steel plate two dynamically recover to the original position through the shearing tension of the rubber, the shock insulation rubber support is pulled by a tensile structure, the tensile structure is composed of a pre-buried block one, a pre-buried block two and a steel cable, the pre-buried block one, the pre-buried block two and the steel cable are pulled by three points, vibration energy is dispersed, the damping of the shock insulation rubber support is improved, the influence of vibration on the shock insulation rubber support is reduced, and the bridge steel structure is fully protected.

Description

Technical Field

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

[0002] Steel structures are structures made of steel materials and are one of the main types of building structures. The structure is mainly composed of components such as beams, steel columns, and steel trusses made of steel sections and steel plates. Rust removal and prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. The components or parts are usually connected by welds, bolts, or rivets. Due to its light weight and simple construction, it is widely used in large factories, stadiums, and super high-rise buildings. For example, steel structures can be used in bridges as the main body of the bridge, and one of its main functions is vibration reduction.

[0003] Because the magnitude of vibrations varies, and the current seismic resistance procedures for bridge steel structures are generally quite simple, they are prone to insufficient stress and failure to function when encountering strong vibrations, leading to bridge damage, economic losses, and safety hazards. In addition, in existing technology, the connection points of bridge steel structures are often fixed with bolts. This method can stably support the bridge structure under normal circumstances, but in the long-term use, if repeated severe vibrations occur, the bolts will loosen along the threads or even fall off, causing great safety hazards and failing to meet people's usage needs.

[0004] Therefore, a seismically stable bridge steel structure is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the existing problems by providing a seismically stable bridge steel structure, thus solving the technical problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: a seismically stable bridge steel structure, comprising seismic isolation rubber bearings, several bridge decks, and several reinforcing ribs. The seismic isolation rubber bearings include embedded steel plates. A connecting steel plate is fixedly connected to the top of the embedded steel plate. A rubber layer is fixedly connected to the top of the connecting steel plate. Several partitions are fixedly connected to the inner wall of the rubber layer. A steel plate layer is fixedly connected to the inner wall of each partition. A sealing plate is fixedly connected to the top of the rubber layer. A lead core is interspersed in the inner wall of the rubber layer. The two ends of the lead core are respectively connected to the sealing plate and the connecting steel plate. A tensile structure is provided at the bottom of the embedded steel plate. The tensile structure includes a first embedded block, and two second embedded blocks are symmetrically arranged on both sides of the first embedded block at an angle below. A steel cable is fixedly connected to the outer wall of the first embedded block, and the end of the steel cable away from the first embedded block is fixedly connected to the outer wall of the second embedded block. A groove is provided on the top of the connecting steel plate and on the outside of the rubber layer. An embedded rib is inserted through the inner wall of the groove. The embedded rib passes through the connecting steel plate and the embedded steel plate and extends to the bottom of the embedded block. A protective cover is slidably connected to the inner wall of the groove and on the outside of the embedded rib.

[0007] Preferably, a connecting steel plate 2 is fixedly connected to the top of the sealing plate, a buffer plate is fixedly connected to the top of the connecting steel plate 2, a top plate is fixedly connected to the top of the buffer plate, a connecting column is provided between the connecting steel plate 2 and the buffer plate, and a plurality of disc springs 1 are sleeved on the outside of the connecting column.

[0008] Preferably, a groove is provided on the outer side of the top plate, and a threaded groove is provided on the inner wall of the top plate and on the inner side of the groove. Several disc springs are provided inside the groove. A connecting block is fixedly connected to the bottom of the bridge deck, and a connecting bolt is threaded to the inner wall of the connecting block. Several disc springs pass through the end of the connecting bolt away from the connecting block and are threaded to the inner wall of the threaded groove.

[0009] Preferably, a horizontal support frame is provided at the bottom of the bridge deck, and a support frame is fixedly connected to both the front and rear ends of the horizontal support frame, and the top of the support frame is fixedly connected to the bottom surface of the bridge deck.

[0010] Preferably, the horizontal support frame includes two reinforcing chords and a diagonal brace, the diagonal brace being located between the two reinforcing chords, and the two ends of the diagonal brace abutting against the two reinforcing chords.

[0011] Preferably, several of the reinforcing ribs extend laterally through the inner wall of each of the bridge deck panels, connecting the several bridge deck panels into one unit.

[0012] Preferably, a railing is fixedly connected to the top of the top plate, and steel wires are inserted through the railing.

[0013] The present invention has the following advantages over the prior art: 1. This invention provides a seismically stable bridge steel structure. When encountering vibration, the seismic isolation rubber bearing will dynamically restore the steel structure above the connecting steel plate to its original position through the shear tension of the rubber. The seismic isolation rubber bearing is installed on the tensile structure, which pulls on it. The tensile structure consists of embedded block one, embedded block two, and steel cable. Embedded block one, embedded block two, and steel cable pull on each other at three points, dispersing vibration energy, improving the damping of the seismic isolation rubber bearing, reducing the impact of vibration on the seismic isolation rubber bearing, and fully protecting the bridge steel structure.

[0014] 2. This invention provides a seismically stable bridge steel structure. The top plate is supported by a buffer plate, and the axial load is borne by several disc springs between the connecting steel plate 2 and the top plate. Under normal circumstances, the disc springs 1 remain constant, and the load is evenly distributed on the inner edge of the upper surface and the outer edge of the lower surface of the disc springs 1. When subjected to vibration caused by external force, the disc springs 1 can disperse the force through their own properties, reduce the load, and reduce the vibration energy. The several disc springs 2 installed at the connection can effectively offset the load when the steel bridge vibrates, reduce the possibility of bolt loosening and falling off, and improve safety.

[0015] 3. This invention provides a seismically stable bridge steel structure. The horizontal support frame is composed of reinforced chords and diagonal braces, which have high stability. Several reinforcing ribs can effectively connect the bridge deck into one piece to form a bridge structure, effectively reducing the load at the bridge deck connection. When the bridge is subjected to vibration, the force can be evenly distributed and wear reduced. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a partial bottom view of the structure of the present invention; Figure 4 This is a schematic diagram of one structure of the embedded block of the present invention; Figure 5 This is a schematic diagram of the structure of the horizontal support frame of the present invention; Figure 6 This is a schematic diagram of one structural element of the connecting steel plate of the present invention; Figure 7 This is a cross-sectional view of the rubber layer of the present invention.

[0017] In the diagram: 1. Embedded steel plate; 2. Connecting steel plate one; 3. Slide groove; 4. Embedded block one; 5. Embedded reinforcement; 6. Rubber layer; 7. Partition layer; 8. Steel plate layer; 9. Lead core; 10. Sealing plate; 11. Connecting steel plate two; 12. Buffer plate; 13. Top plate; 14. Disc spring one; 15. Steel cable; 16. Embedded block two; 17. Protective cover; 18. Disc spring two; 19. Bridge deck; 20. Connecting block; 21. Support frame; 22. Horizontal support frame; 23. Guardrail; 24. Steel wire; 25. Connecting bolt; 26. Reinforcing rib. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example: Please see Figure 1-7 As shown, the present invention provides a technical solution: a seismically stable bridge steel structure, including seismic isolation rubber bearings, several bridge deck panels 19, and several reinforcing ribs 26. The seismic isolation rubber bearing includes a pre-embedded steel plate 1, a connecting steel plate 2 fixedly connected to the top of the pre-embedded steel plate 1, a rubber layer 6 fixedly connected to the top of the connecting steel plate 2, several partitions 7 fixedly connected to the inner wall of the rubber layer 6, a steel plate layer 8 fixedly connected to the inner wall of each partition 7, a sealing plate 10 fixedly connected to the top of the rubber layer 6, and a lead core 9 inserted through the inner wall of the rubber layer 6. The two ends of the lead core 9 are respectively connected to the sealing plate 10 and the connecting steel plate 2. A tensile structure is provided at the bottom of the pre-embedded steel plate 1. The seismic isolation rubber bearing is composed of the sealing plate 10, the lead core 9, multiple layers of natural rubber, and stainless steel. The steel plate and protective rubber layer are vulcanized together. The lead core 9 inserted in the middle of the seismic isolation rubber bearing improves the damping performance of the seismic isolation rubber bearing. The plastic deformation energy of the seismic isolation rubber bearing is mainly formed by the shear deformation of multiple layers of natural rubber. At the same time, the multiple layers of rubber can also bear the weight and horizontal force of the structure. Rubber has horizontal recovery ability. After a strong earthquake, the seismic isolation rubber bearing will dynamically restore the steel structure above the connecting steel plate 11 to its original position through the shear tension of the rubber. The seismic isolation rubber bearing has different laminated structures, formula designs, and manufacturing processes. It is customized according to different production processes to meet the vertical stiffness, durability and lateral deformation performance requirements of bridge engineering.

[0020] The tensile structure includes a first embedded block 4, and two second embedded blocks 16 are symmetrically arranged on both sides of the first embedded block 4 at an angle below. A steel cable 15 is fixedly connected to the outer wall of the first embedded block 4, and one end of the steel cable 15 away from the first embedded block 4 is fixedly connected to the outer wall of the second embedded block 16. A groove 3 is provided on the top of the connecting steel plate 2 and on the outside of the rubber layer 6. A pre-embedded rib 5 is interspersed on the inner wall of the groove 3. The pre-embedded rib 5 passes through the connecting steel plate 2 and the pre-embedded steel plate 1 and extends to the bottom of the pre-embedded block 4. A protective cover 17 is slidably connected to the inner wall of the groove 3 and on the outside of the pre-embedded rib 5. The seismic isolation rubber bearing is installed on the tensile structure and is pulled by the tensile structure. When the tensile structure is installed, two foundation pits are first dug symmetrically according to the survey, and the pre-embedded block 16 is buried in the foundation pit. Then, a foundation pit is dug shallowly between the two foundation pits and the pre-embedded block 4 is buried. A steel cable 15 is connected between the two, so that the pre-embedded block 4 can be pulled by the pre-embedded blocks 16 on both sides, thereby dispersing the vibration energy, improving the damping of the seismic isolation rubber bearing, and reducing the impact of vibration on the seismic isolation rubber bearing. After the tensile structure is installed, multiple embedded reinforcing bars 5 are inserted into the embedded steel plate 1 and the connecting steel plate 2. After the embedded reinforcing bars 5 pass through the embedded block 4 and are driven into the foundation pit, the stability of the connecting steel plate 2 is greatly improved. At the same time, the traction force of the steel cable 15 can be dispersed and the force can be distributed to protect the tensile structure. Then, a protective cover 17 is installed in the slide groove 3 to protect the embedded reinforcing bars 5 and prevent them from rusting.

[0021] A connecting steel plate 11 is fixedly connected to the top of the sealing plate 10. A buffer plate 12 is fixedly connected to the top of the connecting steel plate 11. A top plate 13 is fixedly connected to the top of the buffer plate 12. A connecting post is provided between the connecting steel plate 11 and the buffer plate 12. Several disc springs 14 are sleeved on the outside of the connecting post. A groove is opened on the outside of the top plate 13. A threaded groove is opened on the inner wall of the top plate 13 and inside the groove. Several disc springs 18 are arranged inside the groove. A connecting block 20 is fixedly connected to the bottom of the bridge deck 19. A connecting bolt 25 is threadedly connected to the inner wall of the connecting block 20. The end of the connecting bolt 25 away from the connecting block 20 passes through several disc springs 18 and the threaded groove. The wall is threaded, and the top plate 13 is supported by the buffer plate 12. The connecting steel plate 11 and the top plate 13 are connected by several disc springs 14 to bear the axial load. Under normal circumstances, the disc springs 14 are constant, and the load is evenly distributed on the inner edge of the upper surface and the outer edge of the lower surface of the disc springs 14. When subjected to external force and vibration, they can disperse the force through their own performance, reduce the load, and reduce the vibration energy. The bridge deck 19 and the top plate 13 are connected by connecting bolts 25, which are easy to disassemble and replace. At the same time, several disc springs 18 are installed on the inner side of the top plate 13, which can effectively reduce the load on the connection when the bridge is subjected to traffic or external force and vibration.

[0022] A horizontal support frame 22 is provided at the bottom of the bridge deck 19. The front and rear ends of the horizontal support frame 22 are fixedly connected to the support frame 21. The top of the support frame 21 is fixedly connected to the bottom surface of the bridge deck 19. The horizontal support frame 22 includes two reinforcing chords and diagonal braces. The diagonal braces are located between the two reinforcing chords, and the two ends of the diagonal braces abut against the two reinforcing chords. Several reinforcing ribs 26 are transversely penetrating the inner wall of each bridge deck 19, connecting several bridge decks 19 into one unit. A railing 23 is fixedly connected to the top of the top plate 13, and steel wires 24 are inserted through the railing 23. The horizontal support frame 22 is composed of a combination of reinforced chords and diagonal braces, which has high stability. Through several reinforcing ribs 26, the bridge deck 19 can be effectively connected into a whole to form a bridge structure, which effectively reduces the load at the connection of the bridge deck 19. When the bridge is subjected to vibration, the force can be evenly distributed and wear reduced. The bottom of the bridge is supported by piers, and the top two ends are pulled by steel wires 24 to further enhance the stability of the bridge.

[0023] Working principle: The bridge ends are supported by seismic isolation rubber bearings. The seismic isolation rubber bearings are made of sealing plate 10, lead core 9, multiple layers of natural rubber, stainless steel plate, and protective rubber combination vulcanized together. The lead core 9 inserted in the middle of the seismic isolation rubber bearing improves the damping performance of the seismic isolation rubber bearing. The plastic deformation energy of the seismic isolation rubber bearing is mainly formed by the shear deformation of multiple layers of natural rubber. At the same time, the multiple layers of rubber can also bear the weight and horizontal force of the structure. The rubber has horizontal recovery ability. After a strong earthquake, the seismic isolation rubber bearing will dynamically restore the steel structure above the connecting steel plate 11 to its original position through the shear tension of the rubber, thus meeting the vertical stiffness, durability and lateral deformation performance requirements of bridge engineering. The seismic isolation rubber bearings are installed on the tensile structure, which pulls on them. During installation, two symmetrical deep foundation pits are first excavated according to the survey plan, and pre-embedded blocks 16 are embedded in these pits. Then, a shallow foundation pit is excavated between the two pits, and pre-embedded block 4 is embedded in it. A steel cable 15 is then connected between the two pits, allowing pre-embedded block 4 to be pulled by pre-embedded blocks 16 on both sides, thus dispersing vibration energy. After the tensile structure is installed, multiple pre-embedded reinforcing bars 5 are inserted into the pre-embedded steel plate 1 and connecting steel plate 2, and these reinforcing bars 5 are driven through the pre-embedded blocks 4 and into the foundation pit, significantly improving the stability of the connecting steel plate 2 installation and dispersing the pulling force of the steel cable 15, thus protecting the tensile structure. Then, a protective cover 17 is installed in the sliding groove 3 to prevent the pre-embedded reinforcing bars 5 from corroding. Connecting steel plate 11 and the top plate... Axial loads are borne by several disc springs 14 between the top plate 13 and the bridge deck 19. When subjected to vibration caused by external forces, the disc springs 14 can disperse the force, reduce the load, and lower the vibration energy. Several disc springs 18 are installed on the inner side of the top plate 13. When the bridge is subjected to vibration caused by traffic or external forces, the load on the connection point can be effectively reduced. The horizontal support frame 22 is composed of a combination of reinforced chords and diagonal braces. It has high stability. Several reinforcing ribs 26 can effectively connect the bridge deck 19 into a whole to form a bridge structure. This effectively reduces the load force at the connection point of the bridge deck 19. When the bridge is subjected to vibration, the force can be evenly dispersed, reducing wear. The bottom of the bridge is supported by piers, and the top two ends are pulled by steel wires 24 to further enhance the stability of the bridge.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-seismic stable bridge steel structure comprising a shock insulation rubber support, a plurality of bridge deck slabs (19) and a plurality of reinforcing bars (26), characterized in that: The seismic isolation rubber bearing includes a pre-embedded steel plate (1), a connecting steel plate (2) is fixedly connected to the top of the pre-embedded steel plate (1), a rubber layer (6) is fixedly connected to the top of the connecting steel plate (2), a number of partitions (7) are fixedly connected to the inner wall of the rubber layer (6), a steel plate layer (8) is fixedly connected to the inner wall of each of the partitions (7), a sealing plate (10) is fixedly connected to the top of the rubber layer (6), a lead core (9) is inserted through the inner wall of the rubber layer (6), and the two ends of the lead core (9) are respectively connected to the sealing plate (10) and the connecting steel plate (2), and a tensile structure is provided at the bottom of the pre-embedded steel plate (1). The tensile structure includes a first embedded block (4), and two second embedded blocks (16) are symmetrically arranged on both sides of the first embedded block (4) at an angle below. A steel cable (15) is fixedly connected to the outer wall of the first embedded block (4), and one end of the steel cable (15) away from the first embedded block (4) is fixedly connected to the outer wall of the second embedded block (16). A groove (3) is provided on the top of the connecting steel plate (2) and on the outside of the rubber layer (6). A pre-embedded rib (5) is inserted through the inner wall of the groove (3). The pre-embedded rib (5) passes through the connecting steel plate (2) and the pre-embedded steel plate (1) and extends to the bottom of the pre-embedded block (4). A protective cover (17) is slidably connected to the inner wall of the groove (3) and on the outside of the pre-embedded rib (5).

2. The anti-seismic stable bridge steel structure according to claim 1, characterized in that: The top of the sealing plate (10) is fixedly connected to a connecting steel plate two (11), the top of the connecting steel plate two (11) is fixedly connected to a buffer plate (12), the top of the buffer plate (12) is fixedly connected to a top plate (13), a connecting column is provided between the connecting steel plate two (11) and the buffer plate (12), and several disc springs one (14) are sleeved on the outside of the connecting column.

3. The anti-seismic stable bridge steel structure according to claim 2, characterized in that: The top plate (13) has a groove on its outer side, and the inner wall of the top plate (13) and the inner side of the groove have a threaded groove. Several disc springs (18) are provided inside the groove. The bottom of the bridge deck (19) is fixedly connected to a connecting block (20), and the inner wall of the connecting block (20) is threadedly connected to a connecting bolt (25). The end of the connecting bolt (25) away from the connecting block (20) is threaded through several disc springs (18) and threadedly connected to the inner wall of the threaded groove.

4. The anti-seismic stable bridge steel structure according to claim 1, characterized in that: A horizontal support frame (22) is provided at the bottom of the bridge deck (19). Both ends of the horizontal support frame (22) are fixedly connected to the support frame (21). The top of the support frame (21) is fixedly connected to the bottom surface of the bridge deck (19).

5. The anti-seismic stable bridge steel structure according to claim 4, characterized in that: The horizontal support frame (22) includes two reinforcing chords and a diagonal brace, the diagonal brace being located between the two reinforcing chords and the two ends of the diagonal brace abutting against the two reinforcing chords.

6. The anti-seismic stable bridge steel structure according to claim 1, characterized in that: Several of the reinforcing ribs (26) extend laterally through the inner wall of each of the bridge deck panels (19), connecting the bridge deck panels (19) into one unit.

7. The anti-seismic stable bridge steel structure according to claim 2, characterized in that: A railing (23) is fixedly connected to the top of the top plate (13), and a steel wire (24) is inserted through the railing (23).

Images