A steel arch bridge across a river

Abstract

This application relates to the field of steel structure bridges and discloses a river-spanning steel arch bridge comprising a steel bridge frame provided with a plurality of precast panel mounting slots, each of which contains precast bridge panels, with a filler layer filling the space between the precast bridge panels and the precast panel mounting slots. The application utilizes a precast bridge panel structure, which significantly reduces the impact of weather factors on construction progress, thereby shortening the construction period and ensuring project delivery.

Description

Technical Field

[0001] The present application relates to the field of steel structure bridges, and in particular to a river-spanning steel arch bridge. Background Art

[0002] At present, steel structure bridges are increasingly favored by people due to their many advantages such as stable construction quality and low cost.

[0003] Existing steel bridges are generally constructed by first building a steel frame and then pouring concrete. This method of building steel bridges requires avoiding inclement weather such as heavy rain during the concrete pouring period, and it also takes a considerable amount of time for the concrete to fully solidify. Therefore, the inventor believes that this method has the disadvantage of a long construction period. Summary of the Invention

[0004] In order to further shorten the construction period of steel structure bridges, the present application provides a river-spanning steel arch bridge.

[0005] The steel arch bridge across the river provided in this application adopts the following technical solution:

[0006] A steel arch bridge across a river comprises a steel bridge frame, wherein the steel bridge frame is provided with a plurality of prefabricated plate installation grooves, wherein prefabricated bridge panels are arranged in the prefabricated plate installation grooves, and a filling layer is filled between the prefabricated bridge panels and the prefabricated plate installation grooves.

[0007] By adopting the above technical solution, the prefabricated bridge panels are prefabricated in the factory. After the steel bridge frame is erected on site, the prefabricated bridge panels are transported to the site and laid into the prefabricated panel installation grooves. Finally, the filling layer is made to complete the construction, thereby effectively reducing the adverse effects of weather on the construction progress, shortening the construction period, and ensuring project delivery.

[0008] Preferably, reinforcing ribs are embedded in the prefabricated bridge deck in a crisscross pattern, and both ends of the reinforcing ribs extend out of the prefabricated bridge deck to form elastic bending portions, and the elastic bending portions elastically abut against the inner wall of the prefabricated panel installation groove.

[0009] By adopting the above technical solution, reinforcing ribs are used to enhance the bearing capacity of the prefabricated bridge deck. At the same time, by arranging elastic bending portions on the reinforcing ribs and utilizing the elastic bending portions to elastically abut against the inner wall of the prefabricated deck installation groove, the stability of the laying and installation of the prefabricated bridge deck is improved.

[0010] Preferably, an inner lining plate is provided between the inner wall of the prefabricated plate installation groove and the prefabricated bridge deck, and the inner lining plate is also provided between the filling layer and the elastic bending portion.

[0011] By adopting the above technical solution, the inner lining plate is used to prevent the filling layer from penetrating into the elastic bending part, thereby improving the structural strength of the filling layer and making it inconvenient to subsequently destroy the filling layer and replace the prefabricated bridge deck. At the same time, the inner lining plate is also beneficial to reducing the thickness of the filling layer, making it easier to destroy the filling layer later.

[0012] Preferably, the side of the inner lining plate close to the prefabricated bridge deck is inserted into the prefabricated bridge deck, and the end of the elastic bending portion away from the prefabricated bridge deck is connected to the inner lining plate.

[0013] By adopting the above technical solution, the inner lining plate is connected by utilizing the elastic bending part, driving the edge of the inner lining plate to abut against the inner wall of the prefabricated plate installation groove, so that the inner lining plate can fix the prefabricated bridge deck while dividing the space between the prefabricated bridge deck and the prefabricated plate installation groove, thereby reducing the thickness of the filling layer and the structural strength of the filling layer, making it easier to destroy the filling layer when replacing the prefabricated bridge deck later.

[0014] Preferably, a cavity is provided in the inner lining plate, and a chamfer is provided downwardly on a side of the inner lining plate away from the prefabricated bridge deck.

[0015] By adopting the above technical solution, a cavity is provided to reduce the strength of the inner lining plate, which facilitates the destruction of the filling layer when replacing the prefabricated bridge deck; and a chamfer is provided to facilitate the placement of the prefabricated bridge deck into the prefabricated deck installation groove.

[0016] Preferably, arch ribs are provided on both sides of the steel bridge frame, a plurality of steel cables are connected between the arch ribs and the steel bridge frame, and a plurality of cross bars are connected between the arch ribs.

[0017] By adopting the above technical solution, arch ribs, steel cables and cross bars are provided to improve the structural strength of the steel arch bridge.

[0018] Preferably, the arch rib is provided with a horizontal frame above the steel bridge frame along the length direction of the steel bridge frame, a sliding seat is provided on the horizontal frame for sliding along its length direction, a lifting seat is provided on the sliding seat for lifting, and a sling for lifting the prefabricated bridge panel is provided below the lifting seat.

[0019] By adopting the above technical solution, a horizontal frame, a sliding seat and a lifting seat are set on the arch rib for lifting and moving the prefabricated bridge panels. When laying and replacing the prefabricated bridge panels, there is no need to call for lifting equipment to lay the prefabricated bridge panels.

[0020] Preferably, the bottom of the jacking seat is provided with an opening which is plugged into the sliding seat, and a jacking hydraulic cylinder is fixed on the sliding seat in the opening.

[0021] By adopting the above technical solution, the jacking seat and the sliding seat are plugged together, which is used to guide the movement direction of the jacking seat on the one hand, and to hide and protect the jacking hydraulic cylinder on the other hand.

[0022] Preferably, a lifting lug is embedded on the circumferential side of the prefabricated bridge deck, and a hook that cooperates with the lifting lug is fixed to the end of the sling.

[0023] By adopting the above technical solution, it is convenient to lay prefabricated bridge panels.

[0024] Preferably, a locking plug is telescopically provided on the horizontal frame for locking the position of the sliding seat.

[0025] By adopting the above technical solution, the position of the sliding seat is locked by using the locking plug, so that when the sliding seat is idle, the position of the sliding seat is prevented from being changed arbitrarily and affecting the safety of use.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. This application proposes a structural design that effectively mitigates adverse weather effects by laying prefabricated bridge deck panels within prefabricated deck installation slots, thereby accelerating construction progress and ensuring project delivery.

[0028] 2. Inner lining plates and elastic bending parts are provided around the periphery of the precast bridge deck. The edges of the inner lining plates are used to abut against the inner wall of the precast deck installation groove. This helps to improve the stability of the precast bridge deck installation. At the same time, it divides the space between the inner wall of the precast deck installation groove and the precast bridge deck, reducing the thickness of the filling layer and reducing the strength of the filling layer.

[0029] 3. Horizontal frames, sliding seats and lifting seats are set on the arch ribs to lift and move the prefabricated bridge panels. When laying and replacing prefabricated bridge panels, there is no need to call for lifting equipment to lay the prefabricated bridge panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of a river-crossing steel arch bridge in Example 1 of the present application.

[0031] Figure 2 This is a schematic diagram of a partial explosion structure of a river-crossing steel arch bridge in Example 1 of the present application.

[0032] Figure 3 This is a cross-sectional view of the prefabricated bridge deck in Example 1 of the present application.

[0033] Figure 4 This is a structural diagram of a river-crossing steel arch bridge according to Example 2 of the present application.

[0034] Figure 5 yes Figure 4 A partial enlarged view of part A in the middle.

[0035] Figure 6 It is along Figure 4 Partial cross-sectional view along line BB.

[0036] Explanation of the accompanying symbols: 1. Steel bridge frame; 2. Prefabricated plate installation groove; 3. Prefabricated bridge panel; 4. Filling layer; 5. Reinforcement rib; 6. Elastic bending part; 7. Lining plate; 8. Cavity; 9. Chamfer; 10. Arch rib; 11. Steel cable; 12. Cross bar; 13. Horizontal frame; 14. Sliding seat; 15. Lifting seat; 16. Lifting rope; 17. Opening; 18. Lifting hydraulic cylinder; 19. Lifting ear; 20. Hook; 21. Pier; 22. Waist hole; 23. Slide rail; 24. Roller; 25. Connecting shaft; 26. Locking plug; 27. Driving hydraulic cylinder. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] An embodiment of the present application discloses a steel arch bridge across a river.

[0039] Example 1:

[0040] Reference Figure 1 and Figure 2 A steel arch bridge across a river includes a steel bridge frame 1, a plurality of bridge piers 21 are arranged below the steel bridge frame 1, arch ribs 10 are installed on both sides of the upper part of the steel bridge frame 1, a plurality of steel cables 11 are connected between the arch ribs 10 and the steel bridge frame 1, a plurality of cross bars 12 are horizontally connected between the arch ribs 10, a plurality of prefabricated plate installation grooves 2 are provided on the steel bridge frame 1, prefabricated bridge panels 3 are laid in the prefabricated plate installation grooves 2, and reinforcing ribs 5 are embedded in the prefabricated bridge panels 3 in a crisscross manner. The prefabricated bridge panels 3 are made of concrete, and the reinforcing ribs 5 are made of steel bars. The prefabricated bridge panels 3 are prefabricated in the factory in advance, and both ends of the reinforcing ribs 5 extend out of the prefabricated bridge panels 3 to form elastic bending parts 6, which elastically abut against the inner wall of the prefabricated plate installation grooves 2 to improve the stability of the prefabricated bridge panels 3 after they are laid in the prefabricated plate installation grooves 2. Figure 2 and Figure 3 The precast bridge deck 3 is provided with an inner lining plate 7 on all sides thereof. The elastic bending portion 6 is connected to the inner lining plate 7 at one end away from the precast bridge deck 3. A waist hole 22 is provided on the inner lining plate 7 at a position corresponding to the elastic bending portion 6. The end of the elastic bending portion 6 is located in the waist hole 22. The elastic bending portion 6 pushes the inner lining plate 7 to press against the inner wall of the precast plate mounting groove 2. A chamfer 9 is provided downwardly on the side of the inner lining plate 7 away from the precast bridge deck 3. A filling layer 4 is filled between the precast bridge deck 3 and the precast plate mounting groove 2 and on the inner lining plate 7. The filling layer 4 is formed by solidified concrete.

[0041] When in use, the steel bridge frame 1 and the bridge pier 21 are first built, and the prefabricated bridge panel 3 is prefabricated in the factory. Then the prefabricated bridge panel 3 is transported to the steel bridge frame 1, and the prefabricated bridge panel 3 is lifted by a lifting device and placed in the prefabricated panel installation groove 2. The inner lining plate 7 slides and shrinks into the prefabricated bridge panel 3, and the edge of the inner lining plate 7 abuts the inner wall of the prefabricated panel installation groove 2. After laying multiple prefabricated bridge panels 3, concrete is poured between the prefabricated panel installation groove 2 and the prefabricated bridge panel 3 to form a filling layer 4. The prefabricated bridge panel 3 is prefabricated and is not affected by weather factors, which is conducive to shortening the construction period and ensuring the delivery of the project.

[0042] Reference Figure 2 and Figure 3 The elastic bending portion 6 drives the inner lining plate 7 to abut against the precast plate installation groove 2. After the precast bridge panel 3 is laid into the precast plate installation groove 2, the position of the precast bridge panel 3 is not easily changed, which improves the stability of the installation of the precast bridge panel 3. At the same time, it also ensures that there is space around the precast bridge panel 3 and the precast plate installation groove 2, which is convenient for the subsequent pouring of concrete to form a filling layer 4.

[0043] After it is put into daily use, if a prefabricated bridge panel 3 is damaged, it is only necessary to damage the filling layer 4, remove the damaged prefabricated bridge panel 3 and replace it with a new prefabricated bridge panel 3, which makes daily maintenance very convenient. Among them, the inner lining plate 7 is provided on the one hand to prevent concrete from penetrating into the elastic bending portion 6 and reducing the structural strength of the filling layer 4. Secondly, it is conducive to reducing the thickness of the filling layer 4, making it convenient to destroy the filling layer 4 and remove the damaged prefabricated bridge panel 3 during maintenance. The inner lining plate 7 is a wood composite board, and a cavity 8 is opened in the inner lining plate 7 to reduce the structural strength of the inner lining plate 7. The circumferential side of the prefabricated bridge panel 3 is embedded with a lifting lug 19, which is located below the inner lining plate 7. After the filling layer 4 is damaged, the lifting lug 19 is exposed, which facilitates the removal, replacement and laying of the prefabricated bridge panel 3.

[0044] Example 2:

[0045] Reference Figure 4 and Figure 5 A steel arch bridge across a river, a horizontal frame 13 is installed on the arch rib 10 along the length direction of the steel bridge frame 1, the horizontal frame 13 is installed above the steel bridge frame 1, and the two ends of the horizontal frame 13 are fixed to the two cross bars 12 respectively, Figure 5 and Figure 6A sliding seat 14 is slidably connected to the horizontal frame 13 along its length. A slide rail 23 is fixed to the horizontal frame 13 along its length. Rollers 24 that cooperate with the slide rail 23 are installed at both ends of the slide seat 14. A connecting shaft 25 is connected between the roller 24 and the slide seat 14. A lifting seat 15 is provided on the slide seat 14 for lifting. An opening 17 is provided at the bottom of the lifting seat 15 to plug into the slide seat 14. A lifting hydraulic cylinder 18 is fixed in the opening 17 of the slide seat 14. Firstly, the opening 17 of the lifting seat 15 plugs into the slide seat 14 to guide the lifting movement of the lifting seat 15. Secondly, the lifting hydraulic cylinder 18 is hidden in the lifting seat 15, effectively preventing external rainwater from corroding the lifting hydraulic cylinder 18. A sling 16 for lifting the precast bridge deck 3 is fixed below the sling 15. A hook 20 that cooperates with a lifting lug 19 is fixed at the end of the sling 16.

[0046] The above design is suitable for the construction process and bridge deck maintenance work in order to further facilitate the laying and daily maintenance of the precast bridge deck 3. When laying the precast bridge deck 3, the hook 20 is used to hook the lifting lug 19, and the jacking hydraulic cylinder 18 is activated to lift the precast bridge deck 3. The sliding seat 14 is pulled by the sling 16 to move, driving the precast bridge deck 3 to be laid to the laying point. Finally, the jacking hydraulic cylinder 18 is driven to retract and lower the precast bridge deck 3 to complete the laying without the need to dispatch cranes or other equipment. A locking plug 26 is telescopically provided on the horizontal frame 13 for locking the position of the sliding seat 14. The upper end of the locking plug 26 is provided with a locking port that plugs into the connecting shaft 25. The lower end of the locking plug 26 is slidably connected to the horizontal frame 13. The horizontal frame 13 is also fixed with a driving hydraulic cylinder 27 for driving the locking plug 26 to move telescopically. In order to avoid potential safety hazards caused by the sliding seat 14 sliding randomly during daily use, when not in use, the locking plug block 26 is plugged into the connecting shaft 25 to lock the position of the sliding seat 14.

[0047] The implementation principle of a steel arch bridge across a river in an embodiment of the present application is as follows: on the basis of embodiment one, a sliding seat 14 and a lifting seat 15 are set on the arch rib 10, and in conjunction with the lifting lugs 19 on the prefabricated bridge panel 3, the laying of the prefabricated bridge panel 3 can be completed, further facilitating construction and daily maintenance; in daily life, the hook 20 is hooked on the edge of the steel bridge frame 1 or the sling 16 is wrapped around the steel cable 11, which improves the stability of the structure while preventing the hook 20 and the sling 16 from damaging passing vehicles.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A steel arch bridge across a river, characterized by: The invention comprises a steel bridge frame (1), wherein a plurality of prefabricated plate installation grooves (2) are provided on the steel bridge frame (1), a prefabricated bridge panel (3) is provided in the prefabricated plate installation grooves (2), and a filling layer (4) is filled between the prefabricated bridge panel (3) and the prefabricated plate installation grooves (2); The prefabricated bridge deck (3) is provided with reinforcing ribs (5) embedded in a crisscross pattern, and both ends of the reinforcing ribs (5) extend out of the prefabricated bridge deck (3) to form elastic bending portions (6), and the elastic bending portions (6) elastically abut against the inner wall of the prefabricated board installation groove (2); An inner lining plate (7) is provided between the inner wall of the prefabricated plate installation groove (2) and the prefabricated bridge deck (3), and the inner lining plate (7) is also provided between the filling layer (4) and the elastic bending portion (6); The side of the inner lining plate (7) close to the prefabricated bridge deck (3) is inserted into the prefabricated bridge deck (3), and the end of the elastic bending portion (6) away from the prefabricated bridge deck (3) is connected to the inner lining plate (7); Arch ribs (10) are provided on both sides of the steel bridge frame (1), a plurality of steel cables (11) are connected between the arch ribs (10) and the steel bridge frame (1), and a plurality of cross bars (12) are connected between the arch ribs (10); The arch rib (10) is provided with a horizontal frame (13) above the steel bridge frame (1) along the length direction of the steel bridge frame (1); a sliding seat (14) is provided on the horizontal frame (13) for sliding along its length direction; a lifting seat (15) is provided on the sliding seat (14) for lifting; and a sling (16) for lifting the prefabricated bridge panel (3) is provided below the lifting seat (15).

2. The steel arch bridge across a river according to claim 1, characterized in that: A cavity (8) is provided in the inner lining plate (7), and a chamfer (9) is provided downward on a side of the inner lining plate (7) away from the prefabricated bridge deck (3).

3. The steel arch bridge across a river according to claim 1, characterized in that: The bottom of the lifting seat (15) is provided with an opening (17) which is plugged into and matched with the sliding seat (14); a lifting hydraulic cylinder (18) is fixed on the sliding seat (14) in the opening (17).

4. The steel arch bridge across a river according to claim 1, characterized in that: A lifting lug (19) is embedded in the peripheral side of the prefabricated bridge deck (3), and a lifting hook (20) that matches the lifting lug (19) is fixed to the end of the sling (16).

5. A river-spanning steel arch bridge according to claim 1 or 3, characterized in that: A locking plug (26) for locking the position of the sliding seat (14) is telescopically provided on the horizontal frame (13).

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