Composite assembly type bridge expansion joint device

Abstract

The utility model provides a composite assembly type bridge expansion joint device, which relates to the technical field of bridge expansion joint devices and comprises an upper plate and a lower plate, the upper plate is arranged at the top of the lower plate, a shear key is arranged between the upper plate and the lower plate, and the upper plate, the lower plate and the shear key form assembly type section steel. The opposite faces of the upper plate and the lower plate are each provided with a cavity, a special-shaped anchor bolt is inserted into one side of the upper plate and one side of the lower plate in a penetrating mode, the cavity of the upper plate and the cavity of the lower plate are combined to form a circular cavity, and water stop belt side edge lug belts are arranged in the two cavities. When the assembly type profile steel is used, the polished rod end of the special-shaped anchor bolt and the embedded steel bar are welded together, then the pressing filler is poured, and then the lower plate and the upper plate sequentially penetrate through the special-shaped anchor bolt, so that when the profile steel needs to be replaced, the lower plate and the upper plate are fixed through the water stop belt side edge lug belts. And the damaged place can be replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge expansion joint devices, and in particular to a composite prefabricated bridge expansion joint device. Background Technology

[0002] As is well known, the length of a bridge will change due to temperature changes, concrete shrinkage and creep, uneven settlement of the foundation, and vehicle loads, which will cause displacement at the beam ends. In order to accommodate this displacement and maintain smooth driving, bridge expansion joint devices must be installed.

[0003] In their daily work, the inventors discovered that bridge expansion joint devices still have at least the following problems: When using bridge expansion joint devices, they are placed at locations where gaps or openings occur on the bridge. Because bridge expansion joint devices are located at weak points in the beam structure, they directly bear the repeated effects of vehicle loads and are exposed to the elements, thus being affected by various natural factors. Therefore, expansion joint devices are parts of the bridge system that are extremely easy to damage and difficult to repair or replace. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a composite prefabricated bridge expansion joint device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a composite prefabricated bridge expansion joint device, comprising an upper plate and a lower plate, wherein the upper plate is disposed on top of the lower plate, a shear key is disposed between the upper plate and the lower plate, the upper plate, the lower plate and the shear key constitute a prefabricated steel section, and cavities are opened on the opposite sides of the upper plate and the lower plate, and irregular anchor bolts are inserted through one side of the upper plate and the lower plate.

[0006] The effect achieved by the above components is as follows: When using prefabricated steel sections, the bare end of the special-shaped anchor bolt is first welded to the pre-embedded steel bar, then the filler is poured, and then the lower plate and upper plate are passed through the special-shaped anchor bolt in sequence. In this way, when the steel section needs to be replaced, only the damaged part can be replaced, avoiding the need to replace the whole section.

[0007] Preferably, the cavity of the upper plate and the cavity of the lower plate are combined to form a circular cavity, and the interior of the two cavities is provided with side ear straps of water-stop strips, which are fixed together by a water-stop strip in the middle.

[0008] The effect achieved by the above components is that when the waterstop needs to be replaced, the upper plate and the lower plate can be separated to replace the waterstop.

[0009] Preferably, a copper sleeve is provided in both the countersunk hole of the upper plate and the countersunk hole of the lower plate, and the copper sleeve is made of high-strength brass or tin bronze.

[0010] The effect achieved by the above components is that the copper sleeve can make the upper plate and the lower plate fit together well. High-strength brass or tin bronze has excellent load-bearing capacity and wear resistance, which can make the copper sleeve have a longer service life.

[0011] Preferably, the irregular anchor bolt can be U-shaped, L-shaped, or T-shaped.

[0012] The effect achieved by the above components is that a self-locking nut is installed on the top of the irregular anchor bolt.

[0013] Preferably, a self-locking nut is installed on the top of the irregular anchor bolt.

[0014] The aforementioned components achieve the following effects: the self-locking nuts effectively restrain the upper and lower plates on the surface of the irregular anchor bolts, and the self-locking nuts can be one or more of high-strength self-locking nuts, nylon self-locking nuts, and spring self-locking nuts, providing reliable anti-loosening and vibration-resistant functions.

[0015] Preferably, stiffening ribs are provided on both sides of the irregular anchor bolt.

[0016] The effect achieved by the above components is that the stiffening ribs rigidly connect the threaded ends of multiple irregular anchor bolts into a whole.

[0017] In this utility model, by setting up prefabricated steel sections, when using prefabricated steel sections, the bare end of the special-shaped anchor bolt is first welded to the pre-embedded steel bar, and then the filling material is poured. Then, the lower plate and the upper plate are passed through the special-shaped anchor bolt in sequence. In this way, when it is necessary to replace the steel section, only the damaged part can be replaced, avoiding the need to replace the whole section. Attached Figure Description

[0018] Figure 1 This utility model provides a structural schematic diagram of a composite prefabricated bridge expansion joint device;

[0019] Figure 2 This utility model provides a structural schematic diagram of a novel prefabricated steel profile;

[0020] Figure 3 This utility model provides structural schematic diagrams of various non-standard anchor bolts.

[0021] Legend: 1. Upper plate; 2. Lower plate; 3. Shear key; 4. Copper sleeve; 5. Stiffening rib; 6. Special-shaped anchor bolt; 7. Waterstop; 8. Side ear of waterstop; 9. Cavity; 10. Self-locking nut. Detailed Implementation

[0022] Example 1, as Figure 1-3As shown, a composite prefabricated bridge expansion joint device includes an upper plate 1 positioned on top of a lower plate 2. A shear key 3 is located between the upper plate 1 and the lower plate 2. The upper plate 1, lower plate 2, and shear key 3 form a prefabricated steel section. Cavities 9 are formed on opposite sides of the upper plate 1 and lower plate 2. A special-shaped anchor bolt 6 is inserted through one side of both the upper plate 1 and lower plate 2. When using the prefabricated steel section, the bare end of the special-shaped anchor bolt 6 is first welded to the pre-embedded reinforcing steel, then filler is poured, and then the lower plate 2 and upper plate 1 are sequentially passed through the special-shaped anchor bolt 6. This allows for replacement of only the damaged sections when the steel section needs to be replaced, avoiding the need for a complete replacement. The cavities 9 of the upper plate 1 and lower plate 2 combine to form a circular cavity. Waterstop side lugs 8 are installed inside the two cavities 9, and the two waterstop side lugs 8 are fixed together by a waterstop 7. When the waterstop 7 needs to be replaced, only the upper plate 1 and lower plate 2 need to be separated to replace the waterstop 7. Both the countersunk holes of the upper plate 1 and the lower plate 2 are fitted with copper sleeves 4. The copper sleeves 4 are made of high-strength brass or tin bronze. The copper sleeves 4 can effectively keep the upper plate 1 and the lower plate 2 tightly together. High-strength brass or tin bronze has excellent load-bearing capacity and wear resistance, which can extend the service life of the copper sleeves 4. The special-shaped anchor bolts 6 can be U-shaped, L-shaped, or T-shaped. A self-locking nut 10 is installed on the top of the special-shaped anchor bolts 6. The self-locking nuts 10 can effectively restrict the upper plate 1 and the lower plate 2 to the surface of the special-shaped anchor bolts 6. The self-locking nuts 10 can be one or more of high-strength self-locking nuts 10, nylon self-locking nuts 10, and spring self-locking nuts 10, providing reliable anti-loosening and vibration-resistant functions. Stiffening ribs 5 are set on both sides of the special-shaped anchor bolts 6. The stiffening ribs 5 rigidly connect the threaded ends of multiple special-shaped anchor bolts 6 into a whole.

[0023] Working principle: When using prefabricated steel sections, firstly, the bare end of the special-shaped anchor bolt 6 is welded to the pre-embedded reinforcing bar, and then filler is poured. Then, the lower plate 2 and the upper plate 1 are passed through the special-shaped anchor bolt 6 in sequence. In this way, when the steel section needs to be replaced, only the damaged parts can be replaced, avoiding the need to replace the whole section. When the waterstop 7 needs to be replaced, only the upper plate 1 and the lower plate 2 need to be separated to replace the waterstop 7. The copper sleeve 4 can make the upper plate 1 and the lower plate 2 fit tightly together. High-strength brass or tin bronze has excellent load-bearing capacity and wear resistance, which can extend the service life of the copper sleeve 4. The self-locking nut 10 can effectively restrict the upper plate 1 and the lower plate 2 to the surface of the special-shaped anchor bolt 6. The self-locking nut 10 can be one or more of high-strength self-locking nuts 10, nylon self-locking nuts 10, and spring self-locking nuts 10, providing reliable anti-loosening and vibration-resistant functions. The stiffening rib 5 rigidly connects the threaded ends of multiple special-shaped anchor bolts 6 into a whole.

Claims

1. A composite type assembled bridge expansion joint device comprising an upper plate (1) and a lower plate (2), characterized in that: The upper plate (1) is arranged on the top of the lower plate (2), the middle of the upper plate (1) and the lower plate (2) is provided with a shear key (3), the upper plate (1), the lower plate (2) and the shear key (3) constitute an assembled profile steel, the opposite side of the upper plate (1) and the lower plate (2) is provided with a profile cavity (9), and the side of the upper plate (1) and the lower plate (2) is provided with a special-shaped anchoring bolt (6).

2. The composite expansion joint device for a fabricated bridge according to claim 1, characterized in that: The profile cavity (9) of the upper plate (1) and the profile cavity (9) of the lower plate (2) are combined to form a circular cavity, and the inside of the two profile cavities (9) is provided with a water stop side edge ear band (8), and the two water stop side edge ear bands (8) are fixed together through a water stop band (7) in the middle.

3. The composite expansion joint device for a fabricated bridge according to claim 1, characterized in that: The counterbore of the upper plate (1) and the counterbore of the lower plate (2) are both provided with a copper sleeve (4), and the material of the copper sleeve (4) is high-strength brass or tin bronze.

4. The composite expansion joint device for a fabricated bridge according to claim 1, characterized in that: The special-shaped anchoring bolt (6) can be "U"-shaped, "L"-shaped or "L"-shaped.

5. The composite expansion joint device for a fabricated bridge according to claim 1, characterized in that: The top of the special-shaped anchoring bolt (6) is provided with a self-locking nut (10).

6. The composite expansion joint device for a fabricated bridge according to claim 1, characterized in that: The two sides of the special-shaped anchoring bolt (6) are both provided with a stiffened rib plate (5).

Images