Steel-RPC combined bridge

Abstract

The utility model relates to the technical field of bridges, and discloses a steel-RPC combined bridge which comprises a bridge deck and a plurality of longitudinal beam top plates, the bottom ends of the longitudinal beam top plates are fixedly connected with supporting longitudinal beams, and the bottom ends of the supporting longitudinal beams are fixedly connected with longitudinal beam bases. The middles of the bottom ends of the longitudinal beam top plates and the supporting longitudinal beams are fixedly connected with inverted-T-shaped steel plates, the middles of the top ends of the supporting longitudinal beams and the longitudinal beam bases are provided with inverted-T-shaped pre-buried grooves, and the inverted-T-shaped steel plates and the inverted-T-shaped pre-buried grooves are mutually clamped. Node grooves are formed in the bottom ends of the left sides and the right sides of the longitudinal beam top plates, the top ends and the bottom ends of the left sides and the right sides of the supporting longitudinal beams and the top ends of the left sides and the right sides of the longitudinal beam bases. In the utility model, the gusset plates and the chemical bolts are used for enhancing the overall stability of the bridge structure, so that the bridge structure can be prefabricated and transported section by section, the construction efficiency is improved, and the stability and the precision of the bridge structure are also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a steel-RPC composite bridge. Background Technique

[0002] Bridges are important transportation hubs, making people's travel more convenient and promoting economic exchanges and cultural integration between regions. From ancient stone bridges to modern steel bridges, bridges come in various forms, but their missions remain the same. They span rivers, valleys, canyons, and oceans, tightly connecting the originally separated lands.

[0003] A steel-RPC composite bridge is a bridge structure that combines steel with reactive powder concrete. RPC is a high-performance concrete material with high strength, high toughness, and low porosity. It is made with fine sand as the aggregate, incorporating a large amount of silica fume mineral admixture, high-range water reducer, and micro steel fibers. Compared with ordinary concrete, RPC eliminates coarse aggregate and does not require the configuration of steel bars and prestressed steel strands.

[0004] In the existing steel-RPC composite bridge, the pier is integrally cast during pouring. When hoisting and fixing the pier, due to the large overall weight of the pier, a large crane is required for installation. Compared with small-sized piers, the installation risk is greater, resulting in a reduction in installation efficiency. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a steel-RPC composite bridge, aiming to improve the problem that the existing steel-RPC composite bridge has a large overall weight due to integral pouring during pouring, requires a large crane for installation during installation, and has a greater installation risk, resulting in a reduction in installation efficiency.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A steel-RPC composite bridge, including a bridge deck and a plurality of longitudinal beam top plates. At the bottom ends of the plurality of longitudinal beam top plates, support longitudinal beams are fixedly connected. At the bottom ends of the plurality of support longitudinal beams, longitudinal beam bases are fixedly connected. At the middle parts of the bottom ends of the plurality of longitudinal beam top plates and the support longitudinal beams, convex character steel plates are fixedly connected. At the middle parts of the top ends of the plurality of support longitudinal beams and the longitudinal beam bases, concave character embedded grooves are provided. The plurality of convex character steel plates and the concave character embedded grooves are mutually engaged. At the left and right bottom ends of the plurality of longitudinal beam top plates, at the left and right top and bottom ends of the support longitudinal beams, and at the left and right top ends of the longitudinal beam bases, node grooves are provided. Node plates are arranged on the inner walls of the plurality of node grooves. Chemical bolts penetrate through the inner walls of the plurality of node plates. A plurality of bolt grooves are provided on the adjacent side of the plurality of node grooves. The plurality of chemical bolts are meshed and linked with the bolt grooves. A bridge stability mechanism is arranged on the adjacent side of the two front support longitudinal beams and the two rear support longitudinal beams.

[0007] Through the above technical solution: The supporting longitudinal beam connects the bridge deck with the supporting longitudinal beam and the longitudinal beam base, forming a stable supporting structure. The gusset plate and chemical bolts are used to enhance the overall stability of the bridge structure, enabling it to be prefabricated and transported in segments, greatly reducing the complexity and risks at the construction site, improving the construction efficiency, and ensuring the stability and accuracy of the bridge structure.

[0008] As a further description of the above technical solution:

[0009] The bridge stability mechanism includes a plurality of fixing plates. A plurality of fixing bolts penetrate through the inner walls of the plurality of fixing plates. The tops of the plurality of fixing bolts all penetrate through a load plate. The top walls of the plurality of load plates are all fixedly connected with connecting bent frames. The tops of the plurality of connecting bent frames are all fixedly connected with connecting steel boxes. Steel box grooves are respectively formed on the left and right sides of the bottom wall of the bridge deck. The two connecting steel boxes are meshed and connected with the steel box grooves.

[0010] Through the above technical solution: The bridge deck transfers the force to the connecting steel box, and then through the connecting bent frame and the load plate to the supporting longitudinal beam, which can effectively disperse and bear these loads, ensure the stability and safety of the bridge, ensure the stability and safety of the bridge when bearing loads, and extend its service life.

[0011] As a further description of the above technical solution:

[0012] A plurality of brackets are fixedly connected to the mutually remote sides of the two left supporting longitudinal beams and the two right supporting longitudinal beams. A plurality of ladders are fixedly connected to the mutually remote ends of the plurality of brackets.

[0013] Through the above technical solution: The brackets are connected to the supporting longitudinal beams of the bridge, providing an installation position for the ladders, and the ladders are used for personnel to get on and off the bridge, facilitating the maintenance, inspection and other operations of the bridge.

[0014] As a further description of the above technical solution:

[0015] A plurality of inspection platforms are fixedly connected to the middle parts of the plurality of supporting longitudinal beams. Platform entrances are respectively formed on the inner bottom walls of the plurality of inspection platforms.

[0016] Through the above technical solution: The inspection platforms are fixedly connected to the middle parts of the supporting longitudinal beams, providing a safe and stable working platform for bridge maintenance personnel. The platform entrances are openings on the inspection platforms, facilitating personnel to enter and leave the inspection platforms.

[0017] As a further description of the above technical solution:

[0018] Fixing grooves are respectively formed at the bottom ends of the plurality of longitudinal beam bases.

[0019] Through the above technical solution: The fixing groove is opened at the bottom end of the longitudinal beam base for fixing with the ground to enhance the stability and safety of the bridge.

[0020] As a further description of the above technical solution:

[0021] Two meshing holes are opened at each of the four corners of the bottom wall of the bridge deck. Two meshing columns are fixedly connected to the top ends of multiple longitudinal beam top plates, and the multiple meshing holes are meshingly connected with the meshing columns.

[0022] Through the above technical solution: The design of the meshing holes and meshing columns enables the bridge deck and the longitudinal beam top plate to be firmly connected together, enhancing the overall stability of the bridge.

[0023] As a further description of the above technical solution:

[0024] The inner bottom wall of the bridge deck is fixedly connected with a roadbed, and the top wall of the roadbed is provided with an inclination angle.

[0025] Through the above technical solution: The roadbed is used to bear the loads of vehicles and pedestrians on the bridge deck. The inclination angle of the top wall helps with drainage and prevents water accumulation from damaging the bridge deck.

[0026] As a further description of the above technical solution:

[0027] Drainage holes are opened at the bottom ends of the front and rear sides of the inner wall of the bridge deck, and drain pipes are connected to the bottom ends of the front and rear sides of the bridge deck.

[0028] Through the above technical solution: The drainage holes and drain pipes are used to quickly drain the accumulated water on the bridge deck, prevent the accumulated water from eroding and damaging the bridge deck, and at the same time ensure the safe passage of pedestrians and vehicles.

[0029] The utility model has the following beneficial effects:

[0030] 1. In the utility model, the bridge deck is connected to the support longitudinal beam and the longitudinal beam base through the support longitudinal beam, forming a stable support structure. The gusset plate and chemical bolts are used to enhance the overall stability of the bridge structure, enabling it to be prefabricated and transported in segments, greatly reducing the complexity and risk of the construction site, improving the construction efficiency, and ensuring the stability and accuracy of the bridge structure.

[0031] 2. In the utility model, the force is transmitted from the bridge deck to the connecting steel box, and then through the connecting bent frame and the load plate to the support longitudinal beam, which can effectively disperse and bear these loads, ensure the stability and safety of the bridge, ensure the stability and safety of the bridge when bearing loads, and extend its service life. Description of the Drawings

[0032] Figure 1The front view of the steel-RPC composite bridge proposed by the present utility model;

[0033] Figure 2 The three-dimensional view of the steel-RPC composite bridge proposed by the present utility model;

[0034] Figure 3 The structural decomposition view of the support longitudinal beam of the steel-RPC composite bridge proposed by the present utility model;

[0035] Figure 4 The structural decomposition view of the connecting steel box of the steel-RPC composite bridge proposed by the present utility model.

[0036] Legend:

[0037] 1. Bridge deck; 2. Bridge stability mechanism; 201. Fixed plate; 202. Fixed bolt; 203. Load plate; 204. Connecting bent frame; 205. Connecting steel box; 206. Steel box groove; 3. Top plate of longitudinal beam; 4. Support longitudinal beam; 5. Base of longitudinal beam; 6. Convex character steel plate; 7. Concave character embedded groove; 8. Node groove; 9. Node plate; 10. Chemical bolt; 11. Bolt groove; 12. Escalator; 13. Bracket; 14. Maintenance platform; 15. Platform entrance; 16. Fixed groove; 17. Meshing hole; 18. Meshing column; 19. Roadbed; 20. Drainage hole; 21. Drain pipe. Specific implementation manners

[0038] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0039] Refer to Figure 1 、 Figure 2 and Figure 3, An embodiment provided by the present utility model: a steel-RPC composite bridge, which includes a bridge deck 1 and a plurality of longitudinal beam top plates 3. The bottom ends of the plurality of longitudinal beam top plates 3 are fixedly connected with supporting longitudinal beams 4. The bottom ends of the plurality of supporting longitudinal beams 4 are fixedly connected with longitudinal beam bases 5. The middle parts of the bottom ends of the plurality of longitudinal beam top plates 3 and the supporting longitudinal beams 4 are fixedly connected with convex character steel plates 6. The middle parts of the top ends of the plurality of supporting longitudinal beams 4 and the longitudinal beam bases 5 are provided with concave character embedded grooves 7. The plurality of convex character steel plates 6 and the concave character embedded grooves 7 are mutually engaged. Node grooves 8 are provided at the bottom ends of the left and right sides of the plurality of longitudinal beam top plates 3, at the top and bottom ends of the left and right sides of the supporting longitudinal beams 4, and at the top ends of the left and right sides of the longitudinal beam bases 5. Node plates 9 are arranged on the inner walls of the plurality of node grooves 8. Chemical bolts 10 penetrate through the inner walls of the plurality of node plates 9. A plurality of bolt grooves 11 are provided on the adjacent sides of the plurality of node grooves 8. The plurality of chemical bolts 10 are meshed and linked with the bolt grooves 11. A bridge stability mechanism 2 is arranged on the adjacent sides of the front two supporting longitudinal beams 4 and the rear two supporting longitudinal beams 4;

[0040] Specifically, the overall bridge is mainly connected by a plurality of longitudinal beam top plates 3 and the bridge deck 1. The longitudinal beam top plates 3 are connected to the longitudinal beam bases 5 through the supporting longitudinal beams 4 to form a stable support structure. The convex character steel plates 6 are fixed in the middle parts of the bottom ends of the longitudinal beam top plates 3 and the supporting longitudinal beams 4, while the concave character embedded grooves 7 are pre-opened in the middle parts of the top ends of the supporting longitudinal beams 4 and the longitudinal beam bases 5. During the construction process, the convex character steel plates 6 and the concave character embedded grooves 7 are mutually engaged, achieving a fast and stable connection. The node plates 9 and the chemical bolts 10 are used to enhance the overall stability of the bridge structure. The node plates 9 are installed in the node grooves 8 and fixed by the chemical bolts 10, enabling prefabrication and transportation in segmented sections, greatly reducing the complexity and risks at the construction site. Each section is quickly and accurately assembled through the engagement method of the convex character steel plates 6 and the concave character embedded grooves 7, not only improving the construction efficiency but also ensuring the stability and accuracy of the bridge structure. At the same time, using RPC reactive powder concrete material, which has excellent tensile and compressive strengths, enables the bridge to maintain a stable structural form when bearing various external forces. During the construction of the bridge, the mechanical properties of RPC are fully utilized, making the overall force of the bridge clear, the structure simple, and the durability better.

[0041] Referring to Figure 4 , the bridge stability mechanism 2 includes a plurality of fixing plates 201. A plurality of fixing bolts 202 penetrate through the inner walls of the plurality of said fixing plates 201. The top ends of the plurality of fixing bolts 202 penetrate through a load plate 203. Connecting bents 204 are fixedly connected to the top walls of the plurality of load plates 203. Connecting steel boxes 205 are fixedly connected to the top ends of the plurality of connecting bents 204. Steel box grooves 206 are provided on the left and right sides of the bottom wall of the bridge deck 1. The two connecting steel boxes 205 are meshed and connected with the steel box grooves 206;

[0042] Specifically, the bridge stability mechanism 2 is composed of multiple fixed plates 201 for support, tightly connected to the carrier plate 203 through fixing bolts 202. The carrier plate 203 is fixedly connected to the connecting bent frame 204, and a connecting steel box 205 is fixed at the top of the connecting bent frame 204. The connecting steel box 205 is meshed and connected with the steel box groove 206 at the bottom of the bridge deck 1, forming a tight combination. When the bridge bears a load, the bridge deck 1 transfers the force to the connecting steel box 205, and then through the connecting bent frame 204 and the carrier plate 203 to the support girder 4. Due to the high strength of RPC, it can effectively disperse and bear these loads, ensuring the stability and safety of the bridge, ensuring the stability and safety of the bridge when bearing loads, and extending its service life.

[0043] Refer to Figure 2 , on the far - away sides of the two support girders 4 on the left and the two support girders 4 on the right, multiple brackets 13 are fixedly connected, and escalators 12 are fixedly connected to the far - away ends of the multiple brackets 13; in the middle of the multiple support girders 4, inspection platforms 14 are fixedly connected, and platform entrances 15 are opened on the inner bottom walls of the multiple inspection platforms 14; fixing grooves 16 are opened at the bottom ends of the multiple girder bases 5;

[0044] Specifically, the bracket 13 is connected to the support girder 4 of the bridge, providing an installation position for the escalator 12. The escalator 12 is used for personnel to get on and off the bridge, facilitating the maintenance, inspection and other operations of the bridge. The inspection platform 14 is fixedly connected to the middle of the support girder 4, providing a safe and stable working platform for bridge maintenance personnel. The platform entrance 15 is an opening on the inspection platform 14, facilitating personnel to enter and leave the inspection platform 14. The fixing groove 16 is opened at the bottom end of the girder base 5, used for fixing to the ground to enhance the stability and safety of the bridge.

[0045] Refer to Figure 2 and Figure 4 , at the four corners of the bottom wall of the bridge deck 1, two meshing holes 17 are opened, and two meshing columns 18 are fixedly connected to the top ends of the multiple longitudinal beam top plates 3. The multiple meshing holes 17 are meshed and connected with the meshing columns 18; a roadbed 19 is fixedly connected to the inner bottom wall of the bridge deck 1, and the top wall of the roadbed 19 has an inclination; drainage holes 20 are opened at the bottom ends of the front and rear sides of the inner wall of the bridge deck 1, and drain pipes 21 are communicated with the bottom ends of the front and rear sides of the bridge deck 1;

[0046] Specifically, the design of the meshing holes 17 and the meshing columns 18 enables the bridge deck 1 and the longitudinal beam top plates 3 to be firmly connected together, enhancing the overall stability of the bridge. The roadbed 19 is used to bear the loads of vehicles and pedestrians on the bridge deck. The inclined top wall helps with drainage, preventing water accumulation from damaging the bridge deck. The drainage holes 20 and the drain pipes 21 are used to quickly drain the accumulated water on the bridge deck, preventing the accumulated water from eroding and damaging the bridge deck, and at the same time ensuring the safe passage of pedestrians and vehicles.

[0047] Working principle: The overall bridge is mainly composed of multiple longitudinal beam top plates 3 connected to the bridge deck 1. The longitudinal beam top plates 3 are connected to the longitudinal beam base 5 through the supporting longitudinal beams 4, forming a stable supporting structure. The convex steel plate 6 is fixed in the middle of the bottom ends of the longitudinal beam top plates 3 and the supporting longitudinal beams 4, while the concave embedded groove 7 is pre-opened in the middle of the top ends of the supporting longitudinal beams 4 and the longitudinal beam base 5. During the construction process, the convex steel plate 6 and the concave embedded groove 7 are engaged with each other, achieving a quick and stable connection. The gusset plate 9 and the chemical bolts 10 are used to enhance the overall stability of the bridge structure. The gusset plate 9 is installed in the node groove 8 and fixed by the chemical bolts 10, enabling it to be prefabricated and transported in segments, greatly reducing the complexity and risks at the construction site.

[0048] Moreover, the bridge stability mechanism 2 is composed of multiple fixing plates 201 for support, and is tightly connected to the carrier plate 203 through the fixing bolts 202. The carrier plate 203 is fixedly connected to the connecting bent frame 204. The top end of the connecting bent frame 204 is fixed with a connecting steel box 205, and the connecting steel box 205 is engaged and connected with the steel box groove 206 at the bottom of the bridge deck 1, forming a tight combination. When the bridge bears a load, the bridge deck 1 transmits the force to the connecting steel box 205, and then through the connecting bent frame 204 and the carrier plate 203 to the supporting longitudinal beam 4. Due to the high strength of RPC, it can effectively disperse and bear these loads.

[0049] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A steel-RPC composite bridge, comprising a bridge deck (1) and a plurality of longitudinal beam top plates (3), characterized in that: The bottom ends of the plurality of longitudinal beam top plates (3) are fixedly connected to the supporting longitudinal beams (4), the bottom ends of the plurality of supporting longitudinal beams (4) are fixedly connected to the longitudinal beam base (5), the middle parts of the bottom ends of the plurality of longitudinal beam top plates (3) and the supporting longitudinal beams (4) are fixedly connected to convex steel plates (6), the middle parts of the top ends of the plurality of supporting longitudinal beams (4) and the longitudinal beam base (5) are provided with concave embedded grooves (7), the plurality of convex steel plates (6) and the concave embedded grooves (7) are engaged with each other, and the left and right bottom ends of the plurality of longitudinal beam top plates (3) and the supporting longitudinal beams (4) are fixedly connected to the longitudinal beam base (5). The top and bottom ends of the left and right sides and the top ends of the left and right sides of the longitudinal beam base (5) are all provided with node grooves (8), the inner walls of the plurality of node grooves (8) are all provided with node plates (9), the inner walls of the plurality of node plates (9) are all penetrated by chemical bolts (10), the adjacent sides of the plurality of node grooves (8) are all provided with multiple bolt grooves (11), the plurality of chemical bolts (10) are meshed and linked with the bolt grooves (11), and the adjacent sides of the two front supporting longitudinal beams (4) and the two rear supporting longitudinal beams (4) are provided with a bridge stabilization mechanism (2).

2. The steel-RPC composite bridge according to claim 1, characterized in that: The bridge stabilizing mechanism (2) comprises a plurality of fixing plates (201), the inner walls of the plurality of fixing plates (201) are penetrated by a plurality of fixing bolts (202), the top ends of the plurality of fixing bolts (202) are penetrated by a carrier plate (203), the top walls of the plurality of carrier plates (203) are fixedly connected to a connecting rack (204), the top ends of the plurality of connecting racks (204) are fixedly connected to a connecting steel box (205), the left and right sides of the bottom wall of the bridge deck (1) are provided with a steel box groove (206), and the two connecting steel boxes (205) are meshedly connected to the steel box groove (206).

3. The steel-RPC composite bridge according to claim 1, characterized in that: A plurality of brackets (13) are fixedly connected to the two left supporting longitudinal beams (4) and the two right supporting longitudinal beams (4) at the side away from each other, and an escalator (12) is fixedly connected to the ends away from each other of the plurality of brackets (13).

4. The steel-RPC composite bridge according to claim 1, characterized in that: A maintenance platform (14) is fixedly connected to the middle of each of the plurality of supporting longitudinal beams (4), and a platform entrance (15) is provided on the inner bottom wall of each of the plurality of maintenance platforms (14).

5. The steel-RPC composite bridge according to claim 1, characterized in that: A fixing groove (16) is provided at the bottom ends of the plurality of longitudinal beam bases (5).

6. The steel-RPC composite bridge according to claim 1, characterized in that: Two engaging holes (17) are provided at four corners of the bottom wall of the bridge deck (1), and the top ends of the plurality of longitudinal beam top plates (3) are fixedly connected to two engaging columns (18), and the plurality of engaging holes (17) are engaged with the engaging columns (18).

7. The steel-RPC composite bridge according to claim 1, characterized in that: The inner bottom wall of the bridge deck (1) is fixedly connected to a roadbed (19), and the top wall of the roadbed (19) is provided with an inclination angle.

8. The steel-RPC composite bridge according to claim 1, characterized in that: Drain holes (20) are provided at the bottom ends of the front and rear sides of the inner wall of the bridge deck (1), and the bottom ends of the front and rear sides of the bridge deck (1) are connected to drainage pipes (21).

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