Combined plate girder

Abstract

The utility model discloses a combined plate girder which is composed of a plurality of plate girder bodies which are spliced in sequence, the adjacent plate girder bodies are spliced through a combined part, the combined part comprises a through groove formed in the side wall of the end of the plate girder body in a penetrating mode, the inner side of the through groove is movably connected with a combined rod, and the length of the combined rod is matched with the length of the plate girder body. And one end of each combined rod is used for being matched with one end of the corresponding through groove in the adjacent plate girder body in an inserted mode, second bolt grooves are evenly formed in the tops of the combined rods, first bolt grooves corresponding to the second bolt grooves in a one-to-one mode are evenly formed in the tops of the plate girder bodies, and first bolts are arranged in the first bolt grooves. According to the combined plate girder, the plate girder body is formed by splicing the combined pieces, the combined pieces comprise the through grooves formed in the penetrating mode and the combined rods, the combined rods can be completely hidden in the plate girder body in the transporting and carrying process, carrying and transporting are convenient, and the combined rods with the proper length can be stretched out for combination according to the length of the plate girder body in the splicing process.

Description

Technical Field

[0001] The utility model relates to the field of construction, and particularly relates to a combined plate girder. Background Art

[0002] As is well known, non-prestressed reinforced concrete hollow plate girders are mostly used in medium and small bridges on expressways. Although non-prestressed hollow plate girders can work with cracks, under the influence of overloaded vehicles, large traffic flow, water accumulation, etc., the cracks develop more and faster, the hinge joints fail, and the bridge deck is repeatedly damaged, resulting in single-beam stress, large or excessive deflection of the beam slab, and even causing the beam slab to break.

[0003] In order to ensure the structural strength of traditional concrete bridge plate girders, they are internally provided with strengthening members. These strengthening members are often arranged in the plate girder and integrally poured with the main body of the plate girder. Although it can effectively improve the overall strength of the plate girder, its overall quality and the amount of material processing are also greatly improved, making it very difficult for workers to transport it. At the same time, there are also inconveniences in bridge construction and need to be modified.

[0004] In Chinese Patent Publication No.: CN214219348U, a combined high-strength concrete bridge plate girder is disclosed, which includes a plate girder main body, a slot connection member and a plate girder support structure. The plate girder main body includes a first plate girder fitting and a second plate girder fitting. The first plate girder fitting is placed on one side of the second plate girder fitting and fixedly connected to it through the slot connection member. A first placement groove and a second placement groove are penetrated through the ends of the first plate girder fitting and the second plate girder fitting. The plate girder support structure includes a support beam. A sleeve is penetrated in the support beam. Fixing side plates one and two that are matched with the inner walls of the first placement groove and the second placement groove are welded on the outer sides of the ends of the support beam; a bridge plate girder is different in that the plate girder main body and the plate girder support structure are of a split structure and can be self-assembled during the construction of the plate girder. The plate girder support structure is a support frame body with a hollow structure and a gap unit, and has the characteristics of high support strength, light weight and convenient disassembly and assembly.

[0005] Although the above-mentioned prior art can be self-assembled, its splicing structure length is limited. When splicing a longer plate girder with a shorter splicing structure, its stability is poor. If the splicing structure is set longer to adapt to a longer plate girder, the volume of the splicing structure increases, and transportation, handling, etc. are more troublesome, and the splicing length cannot be adjusted adaptively according to the length of the plate girder.

[0006] Therefore, it is very necessary to propose a combined plate girder to solve the above problems. Content of the Utility Model

[0007] The main purpose of the utility model is to provide a combined plate girder, which can effectively solve the problems in the background art.

[0008] To achieve the above object, the technical solution adopted by the present utility model is as follows:

[0009] A combined plate girder is composed of a plurality of plate girder bodies spliced in sequence. The adjacent plate girder bodies are spliced through a combination component. The combination component includes a through groove penetratingly arranged on the side wall of the end of the plate girder body. A combination rod with a length adapted to the length of the plate girder body is movably connected inside the through groove. One end of the combination rod is used for plugging and matching with one end of the through groove on an adjacent plate girder body. Second bolt grooves are uniformly arranged on the top of the combination rod. First bolt grooves corresponding to the second bolt grooves one by one are uniformly arranged on the top of the plate girder body. First bolts are arranged in the first bolt grooves, and the lower ends of the first bolts are used for threaded connection with the second bolt grooves.

[0010] Preferably, the number of through grooves on each plate girder body is two. The two through grooves are symmetrically arranged at both ends in the width direction of the plate girder body. The longitudinal section of the combination rod is rectangular, and a chamfer is arranged at the corner of the end of the combination rod for plugging with the through groove.

[0011] Preferably, grooves are symmetrically arranged on the four peripheral side walls of the combination rod. Rollers are uniformly rotatably connected inside the grooves along the length direction of the combination rod. One end of the roller protrudes from the side wall of the combination rod, and the roller rolls with the inner wall of the through groove.

[0012] Preferably, the second bolt grooves are arranged inside the grooves and are spaced from the rollers.

[0013] Preferably, it further includes a pre-positioning component. The pre-positioning component includes receiving chutes arranged on the front and rear sides of one end of the plate girder body. A positioning plate is slidably connected inside the receiving chutes along the length direction of the plate girder body. Card slots are symmetrically arranged on the upper and lower sides of one end of the positioning plate. Positioning slots are symmetrically arranged on the front and rear sides of the end of the plate girder body far from the receiving chutes, and the positioning slots are adapted to the positioning plate. One end of the positioning plate is used for plugging and matching with the positioning slot on an adjacent plate girder body. Fixed slots are symmetrically arranged at the upper and lower ends inside the positioning slot. A clamping block is movably connected to the fixed slot. A spring is vertically arranged between one side of the clamping block and the inner wall of the fixed slot. The side of the upper end of the clamping block far from the receiving chute is an inclined surface, and the clamping block is used for clamping and matching with the card slot on the adjacent plate girder body.

[0014] Preferably, fourth bolt grooves are respectively arranged at both ends inside the receiving chutes. Third bolt grooves are arranged on the outer side of one end of the positioning plate close to the positioning slot. Second bolts are arranged in the third bolt grooves, and the end of the second bolt close to the plate girder body is used for threaded connection with the fourth bolt grooves.

[0015] Preferably, a chamfer is arranged at the corner of the end of the positioning plate for plugging with the positioning slot.

[0016] Preferably, limiting ridges are symmetrically arranged at the upper and lower ends inside the accommodation sliding groove, limiting grooves are symmetrically arranged on the upper and lower sides of the positioning plate, and the positioning plate is slidably connected to the outside of the limiting ridges through the limiting grooves.

[0017] Compared with the prior art, the utility model provides a combined plate girder, which has the following beneficial effects:

[0018] 1. For this combined plate girder, the plate girder body is composed of assembled parts. The assembled parts include a through groove and a combined rod. When transporting and handling, the combined rod can be completely hidden inside the plate girder body, which is convenient for handling and transportation. When splicing, the combined rod of an appropriate length can be extended according to the length of the plate girder body for combination. Moreover, when combining, the through groove is in a filled state, increasing the strength of the plate girder body. The structure is simple and the operation is convenient. By providing rollers, the friction between the combined rod and the inner wall of the through groove can be reduced, facilitating the extension of the combined rod.

[0019] 2. For this combined plate girder, through the provided pre-positioning assembly, the preliminary docking between the plate girder bodies can be facilitated, which can ensure the coincidence between the through grooves and increase the stability between the plate girder bodies, facilitating the subsequent insertion of the combined rod into the through groove. Moreover, the pre-positioning assembly is in a hidden state when not in use and does not occupy the outer space. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the utility model;

[0021] Figure 2 is the structural schematic diagram of a single plate girder body of the utility model;

[0022] Figure 3 is the structural schematic diagram of the disassembled state of the combined rod, positioning plate and plate girder body of the utility model;

[0023] Figure 4 is the structural schematic diagram of the combined rod of the utility model;

[0024] Figure 5 is the structural schematic diagram of the positioning plate of the utility model;

[0025] Figure 6 is the structural schematic diagram of the disassembled state of the clamping block and the plate girder body of the utility model.

[0026] In the figure: 1. Plate girder body; 2. Positioning plate; 3. First bolt; 4. Positioning groove; 5. First bolt groove; 6. Accommodation sliding groove; 7. Combined rod; 8. Through groove; 9. Groove; 10. Second bolt groove; 11. Roller; 12. Limiting groove; 13. Card slot; 14. Second bolt; 15. Third bolt groove; 16. Fixed groove; 17. Limiting ridge; 18. Fourth bolt groove; 19. Spring; 20. Clamping block. Detailed implementation manners

[0027] To make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation manners.

[0028] As Figure 1-6 shown, a combined plate beam is composed of a plurality of plate beam bodies 1 spliced in sequence. The adjacent plate beam bodies 1 are spliced by a combination member. The combination member includes a through groove 8 penetrating through the side wall at the end of the plate beam body 1. A combination rod 7 with a length adapted to the length of the plate beam body 1 is movably connected inside the through groove 8. One end of the combination rod 7 is used for plugging and matching with one end of the through groove 8 on an adjacent plate beam body 1. The number of through grooves 8 on each plate beam body 1 is two. The two through grooves 8 are symmetrically arranged at both ends in the width direction of the plate beam body 1. The longitudinal section of the combination rod 7 is rectangular, and a chamfer is provided at the corner of one end of the combination rod 7 for plugging with the through groove 8. Second bolt grooves 10 are uniformly arranged at the top of the combination rod 7. First bolt grooves 5 corresponding to the second bolt grooves 10 one by one are uniformly arranged at the top of the plate beam body 1. First bolts 3 are arranged in the first bolt grooves 5, and the lower ends of the first bolts 3 are used for threaded connection with the second bolt grooves 10.

[0029] In order to reduce the friction force, grooves 9 are symmetrically arranged on the peripheral side walls of the combination rod 7. Inside the grooves 9, rollers 11 are uniformly rotatably connected along the length direction of the combination rod 7. One end of the roller 11 protrudes from the side wall of the combination rod 7, and the roller 11 is in rolling fit with the inner wall of the through groove 8. The second bolt grooves 10 are arranged inside the grooves 9 and are spaced from the rollers 11.

[0030] It further includes a pre-positioning component. The pre-positioning component includes receiving sliding grooves 6 provided on the front and rear sides at one end of the plate girder body 1. A positioning plate 2 is slidably connected to the inner side of the receiving sliding grooves 6 along the length direction of the plate girder body 1. Clamping grooves 13 are symmetrically provided on the upper and lower sides at one end of the positioning plate 2. Positioning grooves 4 are symmetrically provided on the front and rear sides at one end of the plate girder body 1 away from the receiving sliding grooves 6, and the positioning grooves 4 are adapted to the positioning plate 2. One end of the positioning plate 2 is used for plugging and mating with the positioning groove 4 on an adjacent plate girder body 1. A chamfer is provided at the corner of the end of the positioning plate 2 for plugging with the positioning groove 4. Fixed grooves 16 are symmetrically provided at the upper and lower ends inside the positioning groove 4. A clamping block 20 is movably connected to the fixed groove 16. A spring 19 is vertically provided between one side of the clamping block 20 and the inner wall of the fixed groove 16. The upper end of the clamping block 20 is provided with an inclined surface on the side away from the receiving sliding groove 6, and the clamping block 20 is used for clamping and mating with the clamping groove 13 on an adjacent plate girder body 1. Fourth bolt grooves 18 are respectively provided at both ends inside the receiving sliding grooves 6. A third bolt groove 15 is provided on the outer side of one end of the positioning plate 2 close to the positioning groove 4. A second bolt 14 is provided in the third bolt groove 15, and one end of the second bolt 14 close to the plate girder body 1 is used for threaded connection with the fourth bolt groove 18.

[0031] In order to limit the positioning plate 2, limiting ridges 17 are symmetrically provided at the upper and lower ends inside the receiving sliding grooves 6. Limiting grooves 12 are symmetrically provided on the upper and lower sides of the positioning plate 2, and the positioning plate 2 is slidably connected to the outer side of the limiting ridges 17 through the limiting grooves 12.

[0032] It should be noted that the utility model is a modular plate beam. When in use, the positioning plate 2 and the modular rod 7 are both in a hidden state, which is convenient for handling and transportation. When performing modular splicing, a portion of the modular rod 7 on the front plate beam body 1 is extended, so that one end of the through groove 8 will have an extra space, and another plate beam body 1 is docked behind the plate beam body 1. First, the two plate beam bodies 1 are roughly matched, and the positioning plate 2 on the rear plate beam body 1 is matched with the positioning groove 4 on the front plate beam body 1. The second bolt 14 on the rear plate beam body 1 is unscrewed, and the positioning plate 2 is pushed so that one end of the positioning plate 2 protrudes from the end of the plate beam body 1, and one end of the second bolt 14 is screwed into another fourth bolt groove 18, so that the positioning plate 2 is fixed again, and then the rear plate beam body 1 is pushed so that one end of the positioning plate 2 enters the front plate beam body 1, and at the same time, the block 20 on the front plate beam body 1 is gradually compressed, and the spring 19 is compressed. When the slot 13 on the rear plate beam body 1 is completely consistent with the block 20, the spring 19 is reset, and the block 20 is engaged with the slot 13. At this time, the two plate beam bodies 1 are fitted, and the through slots 8 on the plate beam body 1 are consistent. Pressure is applied to the rear end of the combination rod 7 on the rear plate beam body 1 through a tool, and one end of the combination rod 7 is pushed into the rear end of the through slot 8 on the front plate beam body 1. Finally, the first bolt 3 is screwed in to fix the combination rod 7. At this time, one end of the combination rod 7 is fixed to the rear plate beam body 1, and the other end is fixed to the front plate beam body 1, thereby completing the combined splicing. If the plate beam body 1 is longer, the longer combination rod 7 can be extended for plug-in, or the combination rod 7 can be extended according to a specific ratio, thereby increasing adaptability.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A combined plate girder is composed of a plurality of plate girder bodies (1) spliced in sequence, and is characterized in that: The adjacent beam bodies (1) are spliced together through a combination component. The combination component includes a through groove (8) penetrating through the side wall at the end of the beam body (1). A combination rod (7) with a length adapted to the length of the beam body (1) is movably connected inside the through groove (8). One end of the combination rod (7) is used for plugging and matching with one end of the through groove (8) on an adjacent beam body (1). Second bolt grooves (10) are evenly arranged at the top of the combination rod (7). First bolt grooves (5) corresponding to the second bolt grooves (10) one by one are evenly arranged at the top of the beam body (1). First bolts (3) are arranged in the first bolt grooves (5), and the lower ends of the first bolts (3) are used for threadedly connecting with the second bolt grooves (10).

2. The combined plate girder according to claim 1, wherein: The number of through grooves (8) on each beam body (1) is two. The two through grooves (8) are symmetrically arranged at both ends in the width direction of the beam body (1). The longitudinal section of the combination rod (7) is rectangular, and a chamfer is arranged at the corner of the end of the combination rod (7) for plugging with the through groove (8).

3. A combined plate girder according to claim 1, characterized in that: Grooves (9) are symmetrically arranged on the side walls around the combination rod (7). Rollers (11) are evenly rotatably connected inside the grooves (9) along the length direction of the combination rod (7). One end of the roller (11) protrudes from the side wall of the combination rod (7), and the roller (11) is in rolling fit with the inner wall of the through groove (8).

4. The combined plate girder according to claim 3, characterized in that: The second bolt grooves (10) are arranged inside the grooves (9) and are spaced from the rollers (11).

5. A combined plate girder according to claim 1, characterized in that: It further includes a pre-positioning component. The pre-positioning component includes receiving chutes (6) arranged on the front and rear sides at one end of the beam body (1). A positioning plate (2) is slidably connected inside the receiving chutes (6) along the length direction of the beam body (1). Card slots (13) are symmetrically arranged on the upper and lower sides at one end of the positioning plate (2). Positioning grooves (4) are symmetrically arranged on the front and rear sides at the end of the beam body (1) far from the receiving chutes (6). The positioning grooves (4) are adapted to the positioning plate (2). One end of the positioning plate (2) is used for plugging and matching with the positioning groove (4) on an adjacent beam body (1). Fixed grooves (16) are symmetrically arranged at the upper and lower ends inside the positioning groove (4). A clamping block (20) is movably connected to the fixed groove (16). A spring (19) is vertically arranged between one side of the clamping block (20) and the inner wall of the fixed groove (16). The side of the upper end of the clamping block (20) far from the receiving chutes (6) is an inclined surface, and the clamping block (20) is used for clamping and matching with the card slot (13) on an adjacent beam body (1).

6. The combined plate girder according to claim 5, characterized in that: Fourth bolt grooves (18) are respectively arranged at both ends inside the receiving chutes (6). Third bolt grooves (15) are arranged on the outer side of one end of the positioning plate (2) close to the positioning groove (4). Second bolts (14) are arranged in the third bolt grooves (15), and the ends of the second bolts (14) close to the beam body (1) are used for threadedly connecting with the fourth bolt grooves (18).

7. The modular girder according to claim 6, characterized in that: A chamfer is arranged at the corner of the end of the positioning plate (2) for plugging with the positioning groove (4).

8. A combined plate girder according to claim 5, characterized in that: At the upper and lower ends inside the accommodating chute (6), limiting convex strips (17) are symmetrically arranged. On the upper and lower sides of the positioning plate (2), limiting grooves (12) are symmetrically arranged, and the positioning plate (2) is slidably connected to the outside of the limiting convex strips (17) through the limiting grooves (12).

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