River-crossing temporary steel trestle

Abstract

The utility model relates to the technical field of steel trestles, in particular to a river-crossing temporary steel trestle which comprises a bridge deck slab, bailey beams are arranged on the two sides of the bottom of the bridge deck slab respectively, a plurality of damping mechanisms are arranged between each bailey beam and the bridge deck slab, and the bailey beams and the bridge deck slab are connected through the damping mechanisms. A fixing plate is arranged at the bottom of the bailey beam, fixing piles are arranged on the two sides of the fixing plate correspondingly, inclined strut mechanisms capable of supporting the bridge deck slab are arranged on the fixing piles, and through a damping mechanism, when the bridge deck slab is subjected to load and vibrates, a hinge rod can push a sliding block to slide on a fixing transverse rod; the sliding blocks interact with the friction parts on the fixed cross rods to generate friction force, vibration energy is consumed, meanwhile, the first compression springs can be compressed and stretched, the vibration energy is further absorbed and buffered, the stability of the trestle is improved, and the service life of the trestle is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of steel trestle bridges, and in particular to a temporary steel trestle bridge across a river. Background Art

[0002] During river-crossing construction projects, temporary steel trestles are required to facilitate the transportation of personnel, equipment, and materials. However, many traditional temporary steel trestles face a series of challenges in practical applications due to a lack of effective vibration reduction measures. When vehicles or other loads travel or act on the bridge deck, the deck is directly impacted by these dynamic loads. However, the connection between the deck and the supporting structure of traditional trestles lacks a mechanism to effectively buffer and absorb vibration energy. This results in significant vibration of the deck under load.

[0003] On the one hand, long-term strong vibration will accelerate the fatigue damage of various components of the trestle and shorten the service life of the trestle. For example, the welds at the connection parts may crack due to frequent vibrations, and the surface of the steel components may also suffer wear and fatigue cracks due to vibrations, thereby reducing the overall strength and stability of the trestle; on the other hand, a large vibration amplitude will bring an extremely poor experience to passing personnel and vehicles, and may even affect the driving safety of vehicles, increasing the potential risk of accidents. At the same time, for some vibration-sensitive equipment or materials transported on the trestle, the vibration may cause damage to them or affect their normal working performance.

[0004] For this reason, a temporary steel trestle across a river is invented to solve the problem that the current temporary steel trestle across a river lacks shock absorption function. Utility Model Content

[0005] In order to improve the buffering and vibration energy absorption functions of the current temporary steel trestle across the river, the present application provides a temporary steel trestle across the river.

[0006] The present application provides a temporary steel trestle across a river, which adopts the following technical solution: it includes a bridge deck, wherein Bailey beams are respectively provided on both sides of the bottom of the bridge deck, and a number of shock-absorbing mechanisms are provided between each of the Bailey beams and the bridge deck and are connected through the shock-absorbing mechanisms. A fixed plate is provided at the bottom of the Bailey beam, and fixed piles are respectively provided on both sides of the fixed plate, and a diagonal bracing mechanism that can support the bridge deck is provided on the fixed piles.

[0007] Optionally, the shock-absorbing mechanism includes a fixed base plate, which is fixedly installed on the bottom of the Bailey beam, and fixed bases are respectively provided on both sides of the fixed base plate, and a fixed cross bar is provided between the two fixed bases, and slidable sliding blocks are respectively provided at both ends of the fixed cross bar, and friction parts are provided on the sliding blocks and the fixed cross bar, and first compression springs are respectively provided at the opposite ends of the two sliding blocks, and the first compression springs are fixed to the fixed cross bar, and the two sides of the bridge deck are respectively hingedly connected with hinged rods, and the other end of the hinged rod is hingedly connected to the sliding block on its corresponding side, and the hinged rod is located between the two fixed bases.

[0008] Optionally, a guide cylinder is provided on the top of the fixed base, a guide rod is provided in the guide cylinder, a second compression spring is sleeved on the outer side of the guide rod, the bottom of the second compression spring is fixedly connected to the guide cylinder, and the top of the guide rod is fixedly connected to the bridge deck.

[0009] Optionally, the diagonal brace mechanism includes a first diagonal brace assembly and a second diagonal brace assembly, the first diagonal brace assembly is located on the upper side of the second diagonal brace assembly, and the first diagonal brace assembly and the second diagonal brace assembly are both arranged on fixed piles, the first diagonal brace assembly includes a first connecting plate, the first connecting plate is arranged in an L-shape, the top of the first connecting plate is fixedly connected to the bridge deck, the bottom of the first connecting plate is provided with a first diagonal brace rod, and the other end of the first diagonal brace rod is slidably connected to the fixed pile, the second diagonal brace assembly includes a second connecting plate, the second connecting plate is arranged in an L-shape, the top of the second connecting plate is fixedly connected to the bridge deck, the bottom of the second connecting plate is provided with a second diagonal brace rod, and the other end of the second diagonal brace rod is slidably connected to the fixed pile.

[0010] Optionally, the fixing pile is provided with a fixing protrusion corresponding to the first diagonal brace assembly and the second diagonal brace assembly one by one, and the fixing protrusion is provided with a third compression spring, and the first diagonal brace rod and the first diagonal brace rod are respectively fixedly connected to the third compression spring on their corresponding sides.

[0011] Optionally, guardrails are provided on both sides of the bridge deck.

[0012] In summary, this application has the following beneficial technical effects:

[0013] 1. Through the shock-absorbing mechanism, when the bridge deck vibrates under load, the hinged rod pushes the sliding block to slide on the fixed crossbar. The interaction between the sliding block and the friction part on the fixed crossbar generates friction, which consumes the vibration energy. At the same time, the first compression spring is compressed and stretched, further absorbing and buffering the vibration energy. In addition, the guide rod and second compression spring in the guide cylinder also expand and contract with the vibration of the bridge deck, providing additional buffering effect, effectively reducing the vibration amplitude of the bridge deck, improving the stability and service life of the trestle, and providing a more comfortable experience for passengers.

[0014] 2. A diagonal bracing mechanism is adopted. The setting of the first diagonal bracing assembly and the second diagonal bracing assembly provides double support for the bridge deck. The L-shaped connecting plate connects the bridge deck to the diagonal bracing rod. The diagonal bracing rod is slidably connected to the fixed pile, and elastic support and buffering are provided by the third compression spring on the fixed protrusion. When the bridge deck is vibrated, the diagonal bracing rod can slide within a certain range and be adaptively adjusted through the third compression spring, thereby enhancing the overall anti-vibration ability of the trestle and improving the stability of the trestle under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the device;

[0016] Figure 2 This is the main view of the device;

[0017] Figure 3 This is the left side view of the device;

[0018] Figure 4 Schematic diagram of the Bailey beam and its connecting components of the device;

[0019] Figure 5 For this device Figure 3 A magnified view of middle A;

[0020] Among them, 1. Bridge deck, 2. Bailey beam, 3. Shock absorption mechanism, 4. Fixed plate, 5. Fixed pile, 6. Diagonal bracing mechanism, 7. Fixed base plate, 8. Fixed base, 9. Fixed cross bar, 10. Sliding block, 11. First compression spring, 12. Articulated rod, 13. Guide cylinder, 14. Guide rod, 15. Second compression spring, 16. First diagonal bracing assembly, 17. Second diagonal bracing assembly, 18. First connecting plate, 19. First diagonal bracing rod, 20. Second connecting plate, 21. Second diagonal bracing rod, 22. Fixed protrusion, 23. Third compression spring, 24. Guardrail. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0022] Reference Figure 1One embodiment shown is a temporary steel trestle across a river, comprising a bridge deck 1, wherein Bailey beams 2 are fixedly connected to both sides of the bottom of the bridge deck 1 via bolts, and a plurality of shock absorbing mechanisms 3 are provided between each Bailey beam 2 and the bridge deck 1 and connected via the shock absorbing mechanisms 3. A fixing plate 4 is fixedly connected to the bottom of the Bailey beam 2 via bolts, and fixing piles 5 are fixedly connected to both sides of the fixing plate 4. The fixing piles 5 are provided with diagonal bracing mechanisms 6 that can support the bridge deck 1, and guardrails 24 are fixedly connected to both sides of the bridge deck.

[0023] Through the shock-absorbing mechanism 3, when the bridge deck 1 is subjected to load and vibrates, it can absorb and buffer the vibration energy. In addition, the vibration amplitude of the bridge deck 1 is effectively reduced, the stability and service life of the pier are improved, and a more comfortable experience is provided for passage; the diagonal bracing mechanism 6 is adopted, and when the bridge deck 1 vibrates, the diagonal bracing mechanism 6 can be adaptively adjusted, thereby enhancing the overall seismic resistance of the pier and improving the stability of the pier under various working conditions.

[0024] Reference Figure 3 、 Figure 5 An embodiment shown is as follows: the shock absorbing mechanism 3 includes a fixed base plate 7, which is fixedly mounted on the bottom of the Bailey beam 2, and fixed bases 8 are respectively fixedly welded on both sides of the fixed base plate 7, and a fixed cross bar 9 is welded and fixed between the two fixed bases 8. Sliding blocks 10 are slidably connected to the two ends of the fixed cross bar 9, and friction portions are provided on the sliding blocks 10 and the fixed cross bar 9. The opposite ends of the two sliding blocks 10 are respectively fixedly connected to first compression springs 11, which are fixed to the fixed cross bar 9. The two sides of the bridge deck 1 are respectively hingedly connected to hinge rods 12, and the other end of the hinge rod 12 is hingedly connected to the sliding block 10 on its corresponding side, and the hinge rod 12 is located between the two fixed bases 8;

[0025] The implementation principle is as follows: when the bridge deck 1 is subjected to a load and vibrates, the vibration of the bridge deck 1 is transmitted to the sliding block 10 through the hinged rod 12. Due to the action of the hinged rod 12, the up and down vibration of the bridge deck 1 is converted into the sliding of the sliding block 10 on the fixed cross bar 9. The sliding block 10 and the friction part on the fixed cross bar 9 rub against each other, and the vibration energy is converted into heat energy or other forms for consumption through friction. At the same time, when the sliding block 10 slides, it compresses or stretches the first compression spring 11. The first compression spring 11 uses its elastic deformation to absorb and store the vibration energy, and gradually releases it during the vibration process, further buffering the vibration of the bridge deck 1.

[0026] Reference Figure 5In one embodiment shown, a guide cylinder 13 is fixedly connected to the top of the fixed base 8, a guide rod 14 is slidably connected to the inside of the guide cylinder 13, a second compression spring 15 is fixedly sleeved on the outside of the guide rod 14, the bottom of the second compression spring 15 is fixedly connected to the guide cylinder 13, and the top of the guide rod 14 is fixedly connected to the bridge deck 1;

[0027] The implementation principle is: when the bridge deck 1 vibrates, it will drive the guide rod 14 to move up and down in the guide cylinder 13. At this time, the second compression spring 15 will be compressed or stretched as the guide rod 14 moves. The second compression spring 15 provides additional shock-absorbing and buffering effect for the bridge deck 1 through its own elastic force, and works together with the sliding block 10 and the first compression spring 11 to effectively reduce the vibration amplitude of the bridge deck 1.

[0028] Reference Figure 2 、 Figure 4 An embodiment shown is as follows: the diagonal bracing mechanism 6 includes a first diagonal bracing assembly 16 and a second diagonal bracing assembly 17, the first diagonal bracing assembly 16 is located on the upper side of the second diagonal bracing assembly 17, and the first diagonal bracing assembly 16 and the second diagonal bracing assembly 17 are both slidably connected to the fixed pile 5, the first diagonal bracing assembly 16 includes a first connecting plate 18, the first connecting plate 18 is opened into an L shape, the top of the first connecting plate 18 is fixedly connected to the bridge deck 1, the bottom of the first connecting plate 18 is fixedly connected to a first diagonal bracing rod 19, the other end of the first diagonal bracing rod 19 is slidably connected to the fixed pile 5, the second diagonal bracing assembly 17 includes a second connecting plate 20, the second connecting plate 20 is opened into an L shape, the top of the second connecting plate 20 is fixedly connected to the bridge deck 1, the bottom of the second connecting plate 20 is fixedly connected to a second diagonal bracing rod 21, the other end of the second diagonal bracing rod 21 is slidably connected to the fixed pile 5;

[0029] The fixed pile 5 is provided with a fixing protrusion 22 corresponding to the first diagonal brace 19 and the second diagonal brace 19 one by one, and a third compression spring 23 is fixedly connected to the fixing protrusion 22. The top of the third compression spring 23 is fixedly connected to the first diagonal brace 19 and the first diagonal brace 19 respectively. A friction portion is also provided on the relative sliding surface between the first diagonal brace 19 and the second diagonal brace 21 and the fixed pile 5, which is conducive to damping the sliding of the first diagonal brace 19 and the second diagonal brace 21 and consuming vibration energy;

[0030] In a specific implementation, the fixing plate 4 is fixedly connected to the bottom of the Bailey beam 2 by bolts, and the two sides of the fixing plate 4 are fixedly connected to the fixing piles 5 respectively. For the diagonal bracing mechanism 6, the first diagonal bracing assembly 16 and the second diagonal bracing assembly 17 are arranged in the same manner. Taking the first diagonal bracing assembly 16 as an example, the top of the L-shaped first connecting plate 18 is fixedly connected to the bridge deck 1, and the first diagonal bracing rod 19 is installed at the bottom of the first connecting plate 18. The other end of the first diagonal bracing rod 19 is slidably connected to the fixing pile 5, and the third compression spring 23 is installed on the fixing protrusion 22, and the top of the third compression spring 23 is fixedly connected to the first diagonal bracing rod 19. The second diagonal bracing assembly 17 is installed in the same manner, that is, L The top of the second connecting plate 20 is fixedly connected to the bridge deck 1, and the bottom of the second connecting plate 20 is fixedly installed with a second diagonal brace 21. The other end of the second diagonal brace 21 is slidably connected to the fixed pile 5. The third compression spring 23 is fixedly installed on the fixing protrusion 22 on the fixed pile 5. The top of the third compression spring 23 is fixedly connected to the second diagonal brace 21. Through this arrangement, double diagonal bracing and elastic support are provided for the bridge deck 1.

[0031] The implementation principle is: when the bridge deck 1 is vibrated, the L-shaped connecting plate will transfer the force to the diagonal strut. Since the diagonal strut is slidably connected to the fixed pile 5, the diagonal strut will slide a certain distance on the fixed pile 5. In this process, the third compression spring 23 on the fixed protrusion 22 will be compressed or stretched. The third compression spring 23 adapts to the stress and deformation of the bridge deck 1 through its own elastic deformation, and provides elastic support force for the diagonal strut, so that the diagonal strut can provide stable support force for the bridge deck 1, and enhance the overall anti-vibration ability of the trestle. The first diagonal strut assembly 16 and the second diagonal strut assembly 17 work together to provide double support and protection for the bridge deck 1, and improve the stability of the trestle under various working conditions. Optionally, guardrails 24 are provided on both sides of the bridge deck 1.

[0032] The working principle of this device is as follows: when a vehicle or other load travels or acts on the bridge deck 1, the bridge deck 1 will first be impacted by the load and vibrate. The hinged rod 12 in the shock absorbing mechanism 3 will move with the vibration of the bridge deck 1, pushing the sliding block 10 to slide on the fixed cross bar 9. The friction between the sliding block 10 and the fixed cross bar 9 generates friction to consume vibration energy. At the same time, the first compression spring 11 expands and contracts to absorb and buffer vibration. The guide rod 14 moves in the guide cylinder 13 with the vibration of the bridge deck 1. The second compression spring 15 further provides shock absorption and buffering effects, thereby effectively reducing the vibration amplitude of the bridge deck 1, improving the stability and service life of the trestle, and providing a more comfortable experience for passage; at the same time, the diagonal brace rods of the first diagonal brace assembly 16 and the second diagonal brace assembly 17 will slide on the fixed piles 5, and adapt to the deformation and stress conditions of the bridge deck 1 through the compression and extension of the third compression spring 23 on the fixed protrusion 22, providing stable support force for the bridge deck 1, and ensuring the stability of the trestle under various working conditions.

[0033] The working principle of the present invention has been explained through the above embodiments. The above embodiments only express several implementation methods of the present invention. The description is relatively specific and detailed, but it should not be understood as limiting the scope of the invention patent. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the appended claims.

Claims

1. A temporary steel trestle bridge across a river, comprising a bridge deck (1), characterized in that: Bailey beams (2) are respectively provided on both sides of the bottom of the bridge deck (1); a plurality of shock absorbing mechanisms (3) are provided between each of the Bailey beams (2) and the bridge deck (1) and are connected via the shock absorbing mechanisms (3); a fixing plate (4) is provided at the bottom of the Bailey beam (2); fixing piles (5) are respectively provided on both sides of the fixing plate (4); and a diagonal bracing mechanism (6) capable of supporting the bridge deck (1) is provided on the fixing piles (5).

2. A temporary steel trestle across a river according to claim 1, characterized in that: The shock absorbing mechanism (3) includes a fixed base plate (7), which is fixedly mounted on the bottom of the Bailey beam (2), and fixed bases (8) are respectively provided on both sides of the fixed base plate (7). A fixed cross bar (9) is provided between the two fixed bases (8), and slidable sliding blocks (10) are respectively provided at both ends of the fixed cross bar (9). The sliding blocks (10) and the fixed cross bar (9) are both provided with friction parts, and first compression springs (11) are respectively provided at the opposite ends of the two sliding blocks (10), and the first compression springs (11) are fixed on the fixed cross bar (9). The two sides of the bridge deck (1) are respectively hingedly connected with hinged rods (12), and the other end of the hinged rod (12) is hingedly connected to the sliding block (10) on its corresponding side, and the hinged rod (12) is located between the two fixed bases (8).

3. The temporary steel trestle across a river according to claim 2, characterized in that: A guide cylinder (13) is provided on the top of the fixed base (8), a guide rod (14) is provided in the guide cylinder (13), a second compression spring (15) is sleeved on the outer side of the guide rod (14), the bottom of the second compression spring (15) is fixedly connected to the guide cylinder (13), and the top of the guide rod (14) is fixedly connected to the bridge deck (1).

4. The temporary steel trestle across a river according to claim 1, characterized in that: The diagonal bracing mechanism (6) includes a first diagonal bracing assembly (16) and a second diagonal bracing assembly (17). The first diagonal bracing assembly (16) is located on the upper side of the second diagonal bracing assembly (17), and the first diagonal bracing assembly (16) and the second diagonal bracing assembly (17) are both arranged on the fixed pile (5). The first diagonal bracing assembly (16) includes a first connecting plate (18), the first connecting plate (18) is arranged in an L-shape, the top of the first connecting plate (18) is fixedly connected to the bridge deck (1), the bottom of the first connecting plate (18) is provided with a first diagonal bracing rod (19), the other end of the first diagonal bracing rod (19) is slidably connected to the fixed pile (5), and the second diagonal bracing assembly (17) includes a second connecting plate (20), the second connecting plate (20) is arranged in an L-shape, the top of the second connecting plate (20) is fixedly connected to the bridge deck (1), the bottom of the second connecting plate (20) is provided with a second diagonal bracing rod (21), the other end of the second diagonal bracing rod (21) is slidably connected to the fixed pile (5).

5. The temporary steel trestle across a river according to claim 4, characterized in that: The fixing pile (5) is provided with a fixing protrusion (22) corresponding to the first diagonal support assembly (16) and the second diagonal support assembly (17), and the fixing protrusion (22) is provided with a third compression spring (23). The first diagonal support rod (19) and the second diagonal support rod (19) are respectively fixedly connected to the third compression spring (23) on their corresponding sides.

6. The temporary steel trestle across a river according to claim 1, characterized in that: Guardrails (24) are respectively provided on both sides of the bridge deck (1).

Images