Large-span assembly type bridge structure

Abstract

The large-span assembly type bridge structure comprises pier columns, a bearing platform, a damping support, an installation platform and a box girder, a plurality of first embedded rods are evenly arranged on the top of the installation platform, first inserting holes matched with the first embedded rods in an inserted mode are formed in the bottom side of the box girder, and an operation area is arranged in the box girder. A pouring area is formed in the box girder and located at the bottom of the operation area, and when the first inserting hole of the box girder is connected with the first embedded rod in an inserted mode, the first embedded rod extends into the pouring area. The box girders are symmetrically mounted at the top of the mounting table, a plurality of bolts and a plurality of second insertion holes are formed in the sides, close to each other, of the two box girders, the bolts are inserted into the second insertion holes in a penetrating mode and can extend into the operation area, and the ends, located in the operation area, of the bolts are in threaded connection with nuts. By means of the structure, fastening connection between the box girders and fastening connection between the box girders and the mounting table can be achieved, so that construction of a bridge structure can be completed quickly and efficiently, and meanwhile the strength and stability of the bridge structure are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge assembly, and particularly relates to a long-span prefabricated bridge structure. Background Technique

[0002] Prefabricated buildings are an innovative technology in the modern construction field, and their main characteristics are factory prefabrication and on-site assembly. Prefabricated bridges can decompose the entire bridge into several standardized and reusable components, greatly improving the construction efficiency, reducing the labor cost, and also ensuring the quality and stability of the overall building.

[0003] In the prior art, through retrieval, it is found that the Chinese patent discloses "a long-span prefabricated bridge structure" with the application number "202323164861.7". The above patent mainly includes: a support seat is installed on the top of the base, two first fixing rings are fixedly connected to the top of the support seat, shock-absorbing rubbers are installed at the bottoms of the inner walls of the first fixing rings, the tops of the shock-absorbing rubbers are fixedly connected to second fixing rings, a cross bar is fixedly connected to the top of each group of second fixing rings, a group of threaded bolts are fixedly connected to the positions near both ends of the top of the cross bar, nuts are threadedly connected to the outsides of the threaded bolts, and a support bridge is installed on the top of the cross bar. Although the above utility model can increase the seismic resistance of the prefabricated bridge through the cooperation of the cross bar and the shock-absorbing rubber, and at the same time, through the cooperation of the connecting rod and the support frame, it plays a supporting role for the long-span cross bar, so that the force on the long-span cross bar during installation can be evenly distributed, which is beneficial to improving the stability. However, the overall assembly process of the above bridge structure is relatively cumbersome and requires the cooperation of components such as cross bars, support bridges, support frames, connecting rods, fixing ports, bolts, and threaded holes to complete the assembly. The cumbersome assembly process affects the assembly efficiency; and the connection between the connecting rod and the support seat is located below the support bridge, resulting in the connection work between the connecting rod and the support seat may also face the risk of working at height. Therefore, the utility model provides a long-span prefabricated bridge structure to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a long-span prefabricated bridge structure. By setting an operation area, a pouring area, a first embedding rod, a second embedding rod, and bolts, the firm connection between box girders and between the box girder and the installation platform can be realized, so that the construction of the bridge structure can be completed quickly and efficiently, and at the same time, the strength and stability of the bridge structure are ensured.

[0005] To achieve the above object, a long-span prefabricated bridge structure is provided, including pier columns, a bearing platform, shock isolation bearings, an installation platform and a box girder. A plurality of first embedding rods are evenly arranged on the top of the installation platform. First insertion holes for mating with the first embedding rods are formed inside the bottom side of the box girder. An operation area is arranged inside the box girder. A pouring area is formed inside the box girder and at the bottom of the operation area. When the first insertion holes of the box girder are inserted with the first embedding rods, the first embedding rods extend into the pouring area.

[0006] The box girders are symmetrically installed on the top of the installation platform. A plurality of bolts and a plurality of second insertion holes are respectively arranged on one side of the two box girders close to each other. The plurality of bolts penetrate through the second insertion holes and can extend into the operation area. Nuts are threadedly connected to one ends of the plurality of bolts located inside the operation area.

[0007] According to the long-span prefabricated bridge structure, the pier columns are arranged at the bottom of the bearing platform, and the shock isolation bearings are installed between the bearing platform and the installation platform.

[0008] According to the long-span prefabricated bridge structure, a plurality of second embedding rods are further arranged inside the pouring area, and the second embedding rods are arranged at intervals with the first insertion holes.

[0009] According to the long-span prefabricated bridge structure, the bolts and the box girder are integrally formed, and the pier columns and the bearing platform are integrally formed.

[0010] According to the long-span prefabricated bridge structure, both the first embedding rods and the second embedding rods are made of deformed steel bars.

[0011] According to the long-span prefabricated bridge structure, the tops of the first embedding rods and the second embedding rods are slightly lower than the top of the pouring area.

[0012] The present utility model has the following beneficial effects:

[0013] Compared with the prior art, in the long-span prefabricated bridge structure, by arranging the operation area, the pouring area, the first embedding rods, the second embedding rods and the bolts, the firm connection between the box girders and between the box girder and the installation platform can be realized, so that the construction of the bridge structure can be completed quickly and efficiently, and at the same time, the strength and stability of the bridge structure are ensured.

[0014] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0016] Figure 1Schematic diagram of the overall structure of a long-span prefabricated bridge structure of the present utility model;

[0017] Figure 2 Schematic diagram of the split structure of a long-span prefabricated bridge structure of the present utility model;

[0018] Figure 3 Schematic diagram of the side view sectional structure of the box girder of a long-span prefabricated bridge structure of the present utility model;

[0019] Figure 4 Schematic diagram of the bottom view structure of the box girder of a long-span prefabricated bridge structure of the present utility model.

[0020] Legend description:

[0021] 1. Pier column; 2. Raft foundation; 3. Shock-absorbing bearing; 4. Installation platform; 5. First embedding rod; 6. Box girder; 7. Operation area; 8. Bolt; 9. Second embedding rod; 10. First socket; 11. Pouring area; 12. Second socket. Specific implementation manner

[0022] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be construed as a limitation on the protection scope of the present utility model.

[0023] Refer to Figures 1-4 , a long-span prefabricated bridge structure according to an embodiment of the present utility model includes a pier column 1, a raft foundation 2, a shock-absorbing bearing 3, an installation platform 4, and a box girder 6. A plurality of first embedding rods 5 are evenly arranged on the top of the installation platform 4. A first socket 10 adapted to be inserted and connected with the first embedding rod 5 is provided inside the bottom side of the box girder 6. An operation area 7 is provided inside the box girder 6. A pouring area 11 is provided inside the box girder 6 and at the bottom of the operation area 7. When the first embedding rod 5 is inserted into the first socket 10 of the box girder 6, the first embedding rod 5 extends into the pouring area 11;

[0024] The box girders 6 are symmetrically installed on the top of the installation platform 4. A plurality of bolts 8 and a plurality of second sockets 12 are respectively provided on the sides of the two box girders 6 close to each other. The bolts 8 are integrally formed with the box girder 6. A plurality of bolts 8 penetrate through the second sockets 12 and can extend into the operation area 7. Nuts are threadedly connected to one ends of the plurality of bolts 8 located inside the operation area 7.

[0025] When two box girders 6 are assembled, first butt the two box girders 6 so that the bolts 8 are connected in cooperation with the second jacks 12, and tighten the nuts inside the operation area 7 to contact the surface of the box girder 6, so as to realize the firm connection between the box girders 6. Lift the integral box girder 6 and place it above the installation table 4, and make the first jack 10 cooperate with and insert into the first embedded rod 5. After the box girder 6 is placed above the installation table 4, pour concrete into the pouring area 11 inside the box girder 6, so as to realize the firm connection between the box girder 6 and the installation table 4, and thus the construction of the bridge structure can be completed quickly and efficiently, while ensuring the strength and stability of the bridge structure.

[0026] The pier column 1 is arranged at the bottom of the bearing platform 2, and the pier column 1 and the bearing platform 2 are integrally formed. The on-site casting of the pier column 1 and the bearing platform 2 can provide the main vertical support for the bridge. The shock-absorbing bearing 3 is installed between the bearing platform 2 and the installation table 4 to relieve the vibration of the bridge structure under the action of load.

[0027] To enhance the stability of the connection between the box girder 6 and the installation table 4, a plurality of second embedded rods 9 are also arranged inside the pouring area 11. The second embedded rods 9 increase the contact area between the pouring area 11 and the concrete, thereby facilitating the improvement of the connection strength between the box girder 6 and the installation table 4. The first embedded rod 5 and the second embedded rod 9 are both made of deformed steel bars to enhance the strength and stability of the structure. And the second embedded rod 9 is arranged at intervals with the first jack 10, and the tops of the first embedded rod 5 and the second embedded rod 9 are slightly lower than the top of the pouring area 11 to ensure that the poured concrete can completely cover the first embedded rod 5 and the second embedded rod 9.

[0028] Working principle: When two box girders 6 are assembled, first butt the two box girders 6 so that the bolts 8 are connected in cooperation with the second jacks 12, and tighten the nuts inside the operation area 7 to contact the surface of the box girder 6, so as to realize the firm connection between the box girders 6. Lift the integral box girder 6 and place it above the installation table 4, and make the first jack 10 cooperate with and insert into the first embedded rod 5. After the box girder 6 is placed above the installation table 4, pour concrete into the pouring area 11 inside the box girder 6, so as to realize the firm connection between the box girder 6 and the installation table 4, and thus the construction of the bridge structure can be completed quickly and efficiently, while ensuring the strength and stability of the bridge structure.

[0029] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A long-span prefabricated bridge structure, characterized in that, It includes pier columns, a bearing platform, shock-absorbing bearings, an installation platform and a box girder. A plurality of first embedding rods are evenly arranged on the top of the installation platform. First insertion holes adapted to be inserted with the first embedding rods are formed inside the bottom side of the box girder. An operation area is arranged inside the box girder. A pouring area is formed inside the box girder at the bottom of the operation area. When the first insertion holes of the box girder are inserted with the first embedding rods, the first embedding rods extend into the pouring area. The box girders are symmetrically installed on the top of the installation platform. A plurality of bolts and a plurality of second insertion holes are respectively arranged on one side of the two box girders close to each other. The plurality of bolts penetrate through the second insertion holes and can extend into the operation area. Nuts are threadedly connected to one ends of the plurality of bolts located inside the operation area.

2. The long-span prefabricated bridge structure according to claim 1, wherein, The pier columns are arranged at the bottom of the bearing platform. The shock-absorbing bearings are installed between the bearing platform and the installation platform.

3. A long-span prefabricated bridge structure according to claim 2, characterized in that, A plurality of second embedding rods are further arranged inside the pouring area, and the second embedding rods are arranged at intervals with the first insertion holes.

4. A long-span prefabricated bridge structure according to claim 3, characterized in that, The bolts and the box girders are integrally formed, and the pier columns and the bearing platform are integrally formed.

5. A long-span prefabricated bridge structure according to claim 4, characterized in that, Both the first embedding rods and the second embedding rods are made of deformed steel bars.

6. A long-span prefabricated bridge structure according to claim 5, characterized in that, The tops of the first embedding rods and the second embedding rods are slightly lower than the top of the pouring area.

Images