Temporary device with reinforcing effect and suitable for replacing single-column pier support

Abstract

The utility model discloses a temporary device with a reinforcing effect and suitable for replacing a single-column pier support. The temporary device comprises a pier, and the surface of a first steel coaming and the surface of a second steel coaming are fixedly connected with a plurality of sets of reinforcing plates; the top of the top plate is fixedly provided with a jack used for jacking a pier through a fixing mechanism. According to the utility model, the arrangement of the jack and the temporary reinforcement effect on the single-column pier during the jacking of the main beam are considered, and when the jack jacks the pier top and the counter-force is applied to the pier, the counter-force is diffused so as to reduce the stress concentration or local stress, so that the safety of the single-column pier is improved. And meanwhile, the hoop effect can be applied to the pier top in advance before concentrated force is applied, the anti-splitting bearing capacity of pier top concrete is improved, temporary reinforcement of the pier column is achieved, additional reinforcement or arrangement of a jacking support is not needed, and the method has the advantages of being easy and convenient to construct and operate, short in construction period, low in investment, capable of being repeatedly used and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement equipment, in particular to a temporary device with reinforcement effect suitable for replacing a single-column pier support. Background Art

[0002] Beam supports are replaceable components. Due to service life, defects and other reasons, they usually need to be replaced several times within the design service life of the bridge. Currently, a large number of bridge supports have been replaced, including many single-column pier bridges.

[0003] At present, in the existing technology, when replacing the bearings of a single-column pier bridge, due to the small area of ​​the single-column pier top, the reaction force of the synchronous jacking jack often causes the concrete at the edge of the pier top to split, thereby causing the jack to tip over, the main beam jacking failure, and even causing an accident. Therefore, it is necessary to circumferentially wrap carbon fiber cloth or stick steel plates within a certain range of the pier top for reinforcement, or place synchronous jacking jacks on both sides of the single-column pier top bearing to achieve jacking of the main beam. However, the method of circumferentially wrapping carbon fiber cloth or sticking steel plates within a certain range of the pier top for reinforcement will result in a large amount of reinforcement, large investment and a long period of time. The method of placing synchronous jacking jacks on both sides of the single-column pier top bearing to achieve jacking of the main beam will result in a large construction investment and a long construction period. Therefore, we need to propose a temporary device that has both reinforcement effect and is suitable for replacing single-column pier bearings. Utility Model Content

[0004] The purpose of the utility model is to provide a temporary device with a reinforcement effect suitable for replacing a single-column pier support, taking into account the placement of the jack when the main beam is lifted and the temporary reinforcement effect on the single-column pier. When the jack lifts the pier top, the reaction force applied to the pier is a concentrated force vertically downward, and the reaction force can be diffused to reduce stress concentration or reduce local stress. At the same time, before applying the concentrated force, a hoop effect can be applied to the pier top in advance to improve the splitting resistance of the pier top concrete, thereby realizing temporary reinforcement of the pier column without the need for additional reinforcement or jacking support. The utility model has the characteristics of simple construction operation, short construction period, low investment and repeated use of equipment, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A temporary device with a reinforcement effect suitable for replacing a single-column pier support comprises a bridge pier, wherein a first steel enclosure plate and a second steel enclosure plate are arranged on the surface of the bridge pier, the surfaces of the first steel enclosure plate and the second steel enclosure plate are fixedly connected with anchor plates, the sides of the anchor plates are provided with high-strength bolts and matching nuts, the first steel enclosure plate and the second steel enclosure plate are fixedly installed on the surface of the bridge pier through the anchor plates, high-strength bolts and matching nuts, and the surfaces of the first steel enclosure plate and the second steel enclosure plate are fixedly connected with a plurality of groups of reinforcing plates; the tops of the first steel enclosure plate and the second steel enclosure plate are fixedly connected with a top plate, the bottom of the top plate is fitted with the top of the bridge pier, a fixing mechanism is arranged on the top of the top plate, and a jack for lifting the bridge pier is fixedly installed on the top of the top plate through the fixing mechanism.

[0007] Preferably, a box beam is further included, and the telescopic end of the jack is pressed against the bottom of the box beam.

[0008] Preferably, a support is provided on the top of the pier, and an avoidance channel for replacement of the support is reserved between the top plate of the first steel enclosure plate and the top plate of the second steel enclosure plate. The support is arranged in the avoidance channel, and the top of the support is in contact with the bottom of the box girder.

[0009] Preferably, the fixing mechanism includes a fixing seat, a mounting angle, a bracket, a positioning rod, a push spring and a push ring, the jack is fixedly mounted on the top of the fixing seat, the mounting angle is integrally formed on both sides of the fixing seat, and a positioning hole is opened on the mounting angle.

[0010] Preferably, the bracket is fixedly connected to the top of the top plate, the positioning rod is movably inserted in the bracket, the push ring is fixedly connected to the surface of the positioning rod, the push spring is sleeved on the positioning rod, the upper end of the push spring is tightly against the inner top of the bracket, the lower end of the push spring is tightly against the upper surface of the push ring, and the positioning rod is inserted in the positioning hole.

[0011] Preferably, a positioning block is fixedly connected to the top of the top plate, a positioning groove is formed at the bottom of the fixing seat, and the positioning block is arranged in the positioning groove.

[0012] Preferably, rubber pads are provided on the inner sides of the first steel enclosure plate and the second steel enclosure plate, and the rubber pads are in contact with the surface of the pier.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model takes into account the placement of the jack when the main beam is lifted and the temporary reinforcement effect on the single-column pier. When the jack lifts the pier top, the reaction force applied to the pier is a concentrated force vertically downward, and the reaction force can be diffused to reduce stress concentration or reduce local stress. At the same time, before the concentrated force is applied, a hoop effect can be applied to the pier top in advance to improve the anti-splitting bearing capacity of the pier top concrete, thereby realizing temporary reinforcement of the pier column without the need for additional reinforcement or setting of a lifting bracket. The utility model has the characteristics of simple construction operation, short construction period, low investment, and repeated use of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the structural schematic diagrams of the utility model;

[0016] Figure 2 This is the second structural diagram of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the bridge pier, the first steel enclosure plate and the second steel enclosure plate of the utility model;

[0018] Figure 4 This is a schematic diagram of the second steel enclosure structure of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure of area A in the middle.

[0020] In the figure: 1. box girder; 2. bridge pier; 3. support; 4. first steel enclosure; 5. second steel enclosure; 6. reinforcement plate; 7. anchor plate; 8. top plate; 9. high-strength bolts; 10. rubber pad; 11. fixing seat; 12. jack; 13. positioning block; 14. positioning groove; 15. installation angle; 16. positioning hole; 17. bracket; 18. positioning rod; 19. push spring; 20. push ring; 21. lifting frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 , the utility model provides a technical solution:

[0023] A temporary device with a reinforcement effect suitable for replacing a single-column pier support 3 comprises a bridge pier 2, a first steel enclosure plate 4 and a second steel enclosure plate 5 are arranged on the surface of the bridge pier 2, the surfaces of the first steel enclosure plate 4 and the second steel enclosure plate 5 are fixedly connected with anchor plates 7, the sides of the anchor plates 7 are provided with high-strength bolts 9 and matching nuts, the first steel enclosure plate 4 and the second steel enclosure plate 5 are fixedly installed on the surface of the bridge pier 2 through the anchor plates 7, the high-strength bolts 9 and the matching nuts, and the surfaces of the first steel enclosure plate 4 and the second steel enclosure plate 5 are fixedly connected with multiple groups of reinforcing plates 6;

[0024] In this embodiment, after the first steel enclosure plate 4 and the second steel enclosure plate 5 are fixed by high-strength bolts 9 and matching nuts, a pre-tightening force is applied by the first steel enclosure plate 4 and the second steel enclosure plate 5 to achieve the effect of applying a lateral or circumferential pre-tightening force to the top of the single column pier, and the strength of the first steel enclosure plate 4 and the second steel enclosure plate 5 can be improved by the reinforcing plate 6;

[0025] The top of the first steel enclosure plate 4 and the top of the second steel enclosure plate 5 are both fixedly connected with a top plate 8, the bottom of the top plate 8 is in contact with the top of the pier 2, a fixing mechanism is provided on the top of the top plate 8, and a jack 12 for lifting the pier 2 is fixedly installed on the top of the top plate 8 through the fixing mechanism;

[0026] In this embodiment, when the jack 12 lifts the box girder 1, the reaction force of the jack 12 is diffused through the thick steel plate to reduce the level of local compressive stress;

[0027] It also includes a box beam 1, and the telescopic end of the jack 12 is pressed against the bottom of the box beam 1;

[0028] A support 3 is provided on the top of the pier 2, and an escape passage for replacement of the support 3 is reserved between the top plate 8 on the top of the first steel enclosure plate 4 and the top plate 8 on the top of the second steel enclosure plate 5. The support 3 is arranged in the escape passage, and the top of the support 3 is in contact with the bottom of the box beam 1;

[0029] The fixing mechanism includes a fixing seat 11, a mounting angle 15, a bracket 17, a positioning rod 18, a push spring 19 and a push ring 20. The jack 12 is fixedly installed on the top of the fixing seat 11. The mounting angle 15 is integrally formed on both sides of the fixing seat 11. The mounting angle 15 is provided with a positioning hole 16.

[0030] The bracket 17 is fixedly connected to the top of the top plate 8, the positioning rod 18 is movably inserted in the bracket 17, the push ring 20 is fixedly connected to the surface of the positioning rod 18, the push spring 19 is sleeved on the positioning rod 18, the upper end of the push spring 19 is pressed against the inner top of the bracket 17, the lower end of the push spring 19 is pressed against the upper surface of the push ring 20, and the positioning rod 18 is inserted in the positioning hole 16;

[0031] It is worth mentioning that the positioning rod 18 is inserted into the positioning hole 16 under the push of the push spring 19, and the positioning rod 18 can realize the positioning and fixing of the fixing seat 11, so as to facilitate the installation of the jack 12;

[0032] A positioning block 13 is fixedly connected to the top of the top plate 8, and a positioning groove 14 is formed at the bottom of the fixing seat 11, and the positioning block 13 is arranged in the positioning groove 14;

[0033] It is worth noting that by pushing the fixing seat 11, the fixing seat 11 slides on the positioning block 13, so that the fixing seat 11 can be positioned when moving, so as to facilitate the installation of the jack 12;

[0034] The inner sides of the first steel enclosure plate 4 and the second steel enclosure plate 5 are both provided with rubber pads 10, and the rubber pads 10 are in contact with the surface of the pier 2;

[0035] In this embodiment, in order to facilitate the installation of the device, a lifting frame 21 is fixedly connected to the surface of the first steel enclosure plate 4 and the second steel enclosure plate 5. The lifting frame 21 can be used to easily lift the device. The rubber pad 10 can be used to adjust the local unevenness of the pier surface on the one hand, and the preload force can be made more uniform through the compression of the rubber on the other hand.

[0036] In specific use, the first steel enclosure plate 4 and the second steel enclosure plate 5 are symmetrically installed on the top of the pier 2, so that the jack 12 is located directly below the cross diaphragm of the box beam 1, and the high-strength bolts 9 are passed through the anchor plate 7, and the matching nuts are threadedly installed on the high-strength bolts 9, and the matching nuts are tightened, so that the transverse pre-tightening force can be applied through the first steel enclosure plate 4 and the second steel enclosure plate 5;

[0037] After the high-strength bolts 9 and the matching nuts are tensioned and anchored, the positioning rod 18 is pulled up, and after the positioning groove 14 is aligned with the positioning block 13, the fixing seat 11 is pushed to slide on the positioning block 13. After the installation angle 15 is fitted with the side of the bracket 17, the positioning rod 18 is loosened, so that the positioning rod 18 can be inserted into the positioning hole 16 under the push of the push spring 19. The positioning rod 18 can realize the positioning and fixing of the fixing seat 11, thereby completing the installation of the jack 12;

[0038] After the jack 12 is installed, the box girder 1 can be lifted as a whole by the jack 12, and the support 3 can be replaced. After the support 3 is replaced, the jack 12 is dropped back, and the high-strength bolts 9 and the matching nuts are removed, and the temporary device can be disassembled, and then the next single-column pier top operation can be transferred;

[0039] If multiple single-column piers need to be lifted at the same time, multiple sets of devices can be made to achieve the lifting of the entire synchronous main beam and the replacement of the support 3;

[0040] For ramp bridges, the specifications and sizes of the piers 2 and the supports 3 are usually substantially the same, so the device can be used repeatedly and applied in multiple bridges.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temporary device with a reinforcement effect suitable for replacing a single-column pier support, comprising a bridge pier (2), characterized in that: The surface of the bridge pier (2) is provided with a first steel enclosure plate (4) and a second steel enclosure plate (5), the surfaces of the first steel enclosure plate (4) and the second steel enclosure plate (5) are fixedly connected with anchor plates (7), the sides of the anchor plates (7) are provided with high-strength bolts (9) and matching nuts, the first steel enclosure plate (4) and the second steel enclosure plate (5) are fixedly installed on the surface of the bridge pier (2) through the anchor plates (7) in combination with the high-strength bolts (9) and the matching nuts, and the surfaces of the first steel enclosure plate (4) and the second steel enclosure plate (5) are fixedly connected with a plurality of groups of reinforcing plates (6); The tops of the first steel enclosure plate (4) and the second steel enclosure plate (5) are both fixedly connected to a top plate (8), the bottom of the top plate (8) is in contact with the top of the pier (2), a fixing mechanism is provided on the top of the top plate (8), and a jack (12) for lifting the pier (2) is fixedly mounted on the top of the top plate (8) via the fixing mechanism.

2. A temporary device with a reinforcement effect suitable for replacing a single-column pier support according to claim 1, characterized in that: It also comprises a box beam (1), wherein the telescopic end of the jack (12) is pressed against the bottom of the box beam (1).

3. A temporary device with reinforcement effect suitable for replacing a single-column pier support according to claim 2, characterized in that: A support (3) is arranged on the top of the pier (2); an escape passage for replacing the support (3) is reserved between the top plate (8) on the top of the first steel enclosure (4) and the top plate (8) on the top of the second steel enclosure (5); the support (3) is arranged in the escape passage, and the top of the support (3) is in contact with the bottom of the box girder (1).

4. A temporary device with a reinforcement effect suitable for replacing a single-column pier support according to claim 1, characterized in that: The fixing mechanism comprises a fixing seat (11), a mounting angle (15), a bracket (17), a positioning rod (18), a push spring (19) and a push ring (20); the jack (12) is fixedly mounted on the top of the fixing seat (11); the mounting angle (15) is integrally formed on both sides of the fixing seat (11); and a positioning hole (16) is provided on the mounting angle (15).

5. A temporary device with reinforcement effect suitable for replacing a single-column pier support according to claim 4, characterized in that: The bracket (17) is fixedly connected to the top of the top plate (8), the positioning rod (18) is movably inserted in the bracket (17), the push ring (20) is fixedly connected to the surface of the positioning rod (18), the push spring (19) is sleeved on the positioning rod (18), the upper end of the push spring (19) is pressed against the inner top of the bracket (17), the lower end of the push spring (19) is pressed against the upper surface of the push ring (20), and the positioning rod (18) is inserted in the positioning hole (16).

6. A temporary device with reinforcement effect suitable for replacing a single-column pier support according to claim 5, characterized in that: A positioning block (13) is fixedly connected to the top of the top plate (8), a positioning groove (14) is provided at the bottom of the fixing seat (11), and the positioning block (13) is arranged in the positioning groove (14).

7. A temporary device with reinforcement effect suitable for replacing a single-column pier support according to claim 1, characterized in that: Rubber pads (10) are provided on the inner sides of the first steel enclosure plate (4) and the second steel enclosure plate (5), and the rubber pads (10) are in contact with the surface of the bridge pier (2).

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